java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:34:27,099 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:34:27,102 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:34:27,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:34:27,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:34:27,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:34:27,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:34:27,121 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:34:27,125 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:34:27,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:34:27,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 15:34:27,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 15:34:27,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 15:34:27,131 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 15:34:27,135 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 15:34:27,136 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 15:34:27,145 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 15:34:27,147 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 15:34:27,154 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 15:34:27,156 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 15:34:27,157 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 15:34:27,161 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 15:34:27,166 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 15:34:27,166 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:34:27,167 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:34:27,168 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:34:27,170 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:34:27,171 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:34:27,171 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:34:27,173 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:34:27,173 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:34:27,175 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 15:34:27,178 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:34:27,209 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:34:27,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:34:27,211 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:34:27,211 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:34:27,211 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:34:27,211 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:34:27,212 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:34:27,212 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:34:27,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:34:27,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:34:27,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:34:27,304 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:34:27,304 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:34:27,305 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl [2018-07-23 15:34:27,306 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl' [2018-07-23 15:34:27,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:34:27,366 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:34:27,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:34:27,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:34:27,368 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:34:27,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/1) ... [2018-07-23 15:34:27,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/1) ... [2018-07-23 15:34:27,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/1) ... [2018-07-23 15:34:27,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/1) ... [2018-07-23 15:34:27,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/1) ... [2018-07-23 15:34:27,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/1) ... [2018-07-23 15:34:27,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/1) ... [2018-07-23 15:34:27,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:34:27,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:34:27,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:34:27,428 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:34:27,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/1) ... [2018-07-23 15:34:27,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 15:34:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 15:34:27,649 INFO L258 CfgBuilder]: Using library mode [2018-07-23 15:34:27,650 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:34:27 BoogieIcfgContainer [2018-07-23 15:34:27,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:34:27,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:34:27,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:34:27,656 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:34:27,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:34:27" (1/2) ... [2018-07-23 15:34:27,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa18083 and model type codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:34:27, skipping insertion in model container [2018-07-23 15:34:27,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:34:27" (2/2) ... [2018-07-23 15:34:27,660 INFO L112 eAbstractionObserver]: Analyzing ICFG codeblockAssertOrder01.bpl [2018-07-23 15:34:27,670 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:34:27,678 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:34:27,721 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:34:27,721 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:34:27,722 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:34:27,722 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:34:27,722 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:34:27,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:34:27,722 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:34:27,722 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:34:27,722 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:34:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-23 15:34:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-23 15:34:27,743 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:27,744 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-23 15:34:27,744 INFO L414 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-07-23 15:34:27,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:27,816 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:34:27,816 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 15:34:27,821 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:34:27,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:34:27,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:34:27,835 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-23 15:34:27,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:27,857 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 15:34:27,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:34:27,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-23 15:34:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:27,870 INFO L225 Difference]: With dead ends: 9 [2018-07-23 15:34:27,871 INFO L226 Difference]: Without dead ends: 5 [2018-07-23 15:34:27,874 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:34:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-23 15:34:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-23 15:34:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-23 15:34:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-23 15:34:27,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-23 15:34:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:27,912 INFO L471 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-23 15:34:27,913 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:34:27,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-23 15:34:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:34:27,913 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:27,914 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:34:27,914 INFO L414 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:27,914 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-07-23 15:34:27,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:27,940 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:27,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:34:27,943 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:34:27,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:34:27,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:34:27,944 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-23 15:34:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:27,959 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-23 15:34:27,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:34:27,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 15:34:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:27,960 INFO L225 Difference]: With dead ends: 8 [2018-07-23 15:34:27,960 INFO L226 Difference]: Without dead ends: 6 [2018-07-23 15:34:27,961 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:34:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-23 15:34:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-23 15:34:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-23 15:34:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-23 15:34:27,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-23 15:34:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:27,965 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-23 15:34:27,965 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:34:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-23 15:34:27,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 15:34:27,966 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:27,966 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-23 15:34:27,966 INFO L414 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:27,967 INFO L82 PathProgramCache]: Analyzing trace with hash 28752352, now seen corresponding path program 2 times [2018-07-23 15:34:27,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:34:28,002 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:34:28,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:34:28,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:28,003 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-07-23 15:34:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,023 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 15:34:28,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:34:28,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-23 15:34:28,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,025 INFO L225 Difference]: With dead ends: 9 [2018-07-23 15:34:28,025 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 15:34:28,026 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:34:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 15:34:28,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 15:34:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:34:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 15:34:28,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-23 15:34:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,029 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 15:34:28,029 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:34:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 15:34:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:34:28,030 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,030 INFO L353 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-07-23 15:34:28,030 INFO L414 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash 891320966, now seen corresponding path program 3 times [2018-07-23 15:34:28,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,066 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:34:28,066 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:34:28,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:34:28,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:34:28,069 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-23 15:34:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,098 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-23 15:34:28,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:34:28,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-23 15:34:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,101 INFO L225 Difference]: With dead ends: 10 [2018-07-23 15:34:28,102 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 15:34:28,102 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:34:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 15:34:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-23 15:34:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-23 15:34:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-23 15:34:28,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-07-23 15:34:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,109 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-23 15:34:28,109 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:34:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-23 15:34:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:34:28,110 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,110 INFO L353 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-07-23 15:34:28,111 INFO L414 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144224, now seen corresponding path program 4 times [2018-07-23 15:34:28,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:34:28,182 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:34:28,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:34:28,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:28,183 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-23 15:34:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,201 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 15:34:28,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:34:28,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-23 15:34:28,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,202 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:34:28,202 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 15:34:28,203 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:34:28,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 15:34:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 15:34:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 15:34:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 15:34:28,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-07-23 15:34:28,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,207 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 15:34:28,207 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:34:28,207 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 15:34:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:34:28,208 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,208 INFO L353 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-07-23 15:34:28,208 INFO L414 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894150, now seen corresponding path program 5 times [2018-07-23 15:34:28,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:34:28,250 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:34:28,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:34:28,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:34:28,251 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-07-23 15:34:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,266 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-23 15:34:28,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:34:28,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-23 15:34:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,270 INFO L225 Difference]: With dead ends: 12 [2018-07-23 15:34:28,270 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 15:34:28,270 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:34:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 15:34:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-23 15:34:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-23 15:34:28,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-23 15:34:28,281 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-07-23 15:34:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,282 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-23 15:34:28,282 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:34:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-23 15:34:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-23 15:34:28,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,284 INFO L353 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-07-23 15:34:28,285 INFO L414 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141856, now seen corresponding path program 6 times [2018-07-23 15:34:28,285 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:34:28,377 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:34:28,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:34:28,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:34:28,378 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-07-23 15:34:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,392 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-23 15:34:28,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:34:28,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-07-23 15:34:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,393 INFO L225 Difference]: With dead ends: 13 [2018-07-23 15:34:28,393 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:34:28,394 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:34:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:34:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 15:34:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 15:34:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-23 15:34:28,398 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-07-23 15:34:28,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,398 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-23 15:34:28,398 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:34:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-23 15:34:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:34:28,399 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,399 INFO L353 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-07-23 15:34:28,399 INFO L414 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820742, now seen corresponding path program 7 times [2018-07-23 15:34:28,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:34:28,459 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:34:28,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:34:28,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:34:28,460 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-07-23 15:34:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,475 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-23 15:34:28,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:34:28,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-07-23 15:34:28,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,476 INFO L225 Difference]: With dead ends: 14 [2018-07-23 15:34:28,477 INFO L226 Difference]: Without dead ends: 12 [2018-07-23 15:34:28,477 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:34:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-23 15:34:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-23 15:34:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-23 15:34:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-23 15:34:28,481 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-23 15:34:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,482 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-23 15:34:28,482 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:34:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-23 15:34:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 15:34:28,482 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,483 INFO L353 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-07-23 15:34:28,483 INFO L414 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166496, now seen corresponding path program 8 times [2018-07-23 15:34:28,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:34:28,529 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:34:28,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:34:28,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:34:28,533 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-07-23 15:34:28,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,552 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-23 15:34:28,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:34:28,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-07-23 15:34:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,553 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:34:28,553 INFO L226 Difference]: Without dead ends: 13 [2018-07-23 15:34:28,554 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:34:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-23 15:34:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-23 15:34:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-23 15:34:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-23 15:34:28,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-07-23 15:34:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,561 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-23 15:34:28,561 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:34:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-23 15:34:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:34:28,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,562 INFO L353 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-07-23 15:34:28,562 INFO L414 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash -562523066, now seen corresponding path program 9 times [2018-07-23 15:34:28,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:34:28,634 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:34:28,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:34:28,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:34:28,639 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-07-23 15:34:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,664 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-23 15:34:28,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:34:28,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-07-23 15:34:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,666 INFO L225 Difference]: With dead ends: 16 [2018-07-23 15:34:28,666 INFO L226 Difference]: Without dead ends: 14 [2018-07-23 15:34:28,667 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:34:28,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-23 15:34:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-23 15:34:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-23 15:34:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-23 15:34:28,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-07-23 15:34:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,673 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-23 15:34:28,673 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:34:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-23 15:34:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:34:28,674 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,674 INFO L353 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-07-23 15:34:28,674 INFO L414 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash -258347808, now seen corresponding path program 10 times [2018-07-23 15:34:28,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:34:28,738 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:34:28,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:34:28,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:34:28,739 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-23 15:34:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,753 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-23 15:34:28,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:34:28,753 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-23 15:34:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,754 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:34:28,754 INFO L226 Difference]: Without dead ends: 15 [2018-07-23 15:34:28,756 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:34:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-23 15:34:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-23 15:34:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 15:34:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-23 15:34:28,761 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-07-23 15:34:28,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,761 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-23 15:34:28,761 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:34:28,762 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-23 15:34:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:34:28,764 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,764 INFO L353 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-07-23 15:34:28,764 INFO L414 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,764 INFO L82 PathProgramCache]: Analyzing trace with hash 581150598, now seen corresponding path program 11 times [2018-07-23 15:34:28,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-23 15:34:28,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:34:28,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:34:28,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:34:28,810 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-07-23 15:34:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,828 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-23 15:34:28,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:34:28,828 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-07-23 15:34:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,829 INFO L225 Difference]: With dead ends: 18 [2018-07-23 15:34:28,829 INFO L226 Difference]: Without dead ends: 16 [2018-07-23 15:34:28,830 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:34:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-23 15:34:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-23 15:34:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-23 15:34:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-23 15:34:28,834 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-07-23 15:34:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,834 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-23 15:34:28,834 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:34:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-23 15:34:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-23 15:34:28,835 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,835 INFO L353 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-07-23 15:34:28,836 INFO L414 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash 835797408, now seen corresponding path program 12 times [2018-07-23 15:34:28,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:28,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:28,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:34:28,908 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:34:28,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:34:28,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:34:28,910 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-07-23 15:34:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:28,941 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-23 15:34:28,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:34:28,941 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-07-23 15:34:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:28,942 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:34:28,942 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 15:34:28,943 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:34:28,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 15:34:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 15:34:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 15:34:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-23 15:34:28,950 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-07-23 15:34:28,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:28,951 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-23 15:34:28,951 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:34:28,951 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-23 15:34:28,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:34:28,952 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:28,952 INFO L353 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-07-23 15:34:28,952 INFO L414 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:28,953 INFO L82 PathProgramCache]: Analyzing trace with hash 139913926, now seen corresponding path program 13 times [2018-07-23 15:34:28,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,003 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,003 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:34:29,004 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:34:29,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:34:29,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:34:29,005 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-07-23 15:34:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,016 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-23 15:34:29,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:34:29,017 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-07-23 15:34:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,018 INFO L225 Difference]: With dead ends: 20 [2018-07-23 15:34:29,018 INFO L226 Difference]: Without dead ends: 18 [2018-07-23 15:34:29,019 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:34:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-23 15:34:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-23 15:34:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-23 15:34:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-23 15:34:29,023 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-07-23 15:34:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,023 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-23 15:34:29,023 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:34:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-23 15:34:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 15:34:29,024 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,024 INFO L353 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-07-23 15:34:29,025 INFO L414 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,025 INFO L82 PathProgramCache]: Analyzing trace with hash 42362464, now seen corresponding path program 14 times [2018-07-23 15:34:29,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:34:29,090 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:34:29,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:34:29,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:34:29,091 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-23 15:34:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,119 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-23 15:34:29,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:34:29,119 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-23 15:34:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,120 INFO L225 Difference]: With dead ends: 21 [2018-07-23 15:34:29,122 INFO L226 Difference]: Without dead ends: 19 [2018-07-23 15:34:29,123 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:34:29,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-23 15:34:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-23 15:34:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 15:34:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-23 15:34:29,131 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-07-23 15:34:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,134 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-23 15:34:29,134 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:34:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-23 15:34:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:34:29,135 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,135 INFO L353 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-07-23 15:34:29,136 INFO L414 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234438, now seen corresponding path program 15 times [2018-07-23 15:34:29,136 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,210 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-23 15:34:29,211 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 15:34:29,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 15:34:29,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:34:29,212 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-07-23 15:34:29,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,242 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-23 15:34:29,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:34:29,245 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-07-23 15:34:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,246 INFO L225 Difference]: With dead ends: 22 [2018-07-23 15:34:29,246 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 15:34:29,247 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:34:29,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 15:34:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-23 15:34:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-23 15:34:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-23 15:34:29,255 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-07-23 15:34:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,255 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-23 15:34:29,255 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 15:34:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-23 15:34:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-23 15:34:29,256 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,256 INFO L353 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-07-23 15:34:29,256 INFO L414 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2055559968, now seen corresponding path program 16 times [2018-07-23 15:34:29,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:34:29,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:34:29,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:34:29,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:34:29,323 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-07-23 15:34:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,341 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-23 15:34:29,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:34:29,341 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-07-23 15:34:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,343 INFO L225 Difference]: With dead ends: 23 [2018-07-23 15:34:29,343 INFO L226 Difference]: Without dead ends: 21 [2018-07-23 15:34:29,344 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:34:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-23 15:34:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-23 15:34:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-23 15:34:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-23 15:34:29,349 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-07-23 15:34:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,349 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-23 15:34:29,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:34:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-23 15:34:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:34:29,350 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,350 INFO L353 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-07-23 15:34:29,350 INFO L414 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,351 INFO L82 PathProgramCache]: Analyzing trace with hash -702152378, now seen corresponding path program 17 times [2018-07-23 15:34:29,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,434 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,434 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:34:29,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:34:29,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:34:29,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:34:29,438 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-07-23 15:34:29,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,458 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-23 15:34:29,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:34:29,459 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-07-23 15:34:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,460 INFO L225 Difference]: With dead ends: 24 [2018-07-23 15:34:29,460 INFO L226 Difference]: Without dead ends: 22 [2018-07-23 15:34:29,465 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:34:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-23 15:34:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-23 15:34:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-23 15:34:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-23 15:34:29,472 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-07-23 15:34:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,472 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-23 15:34:29,476 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:34:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-23 15:34:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 15:34:29,477 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,478 INFO L353 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-07-23 15:34:29,478 INFO L414 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash -291889184, now seen corresponding path program 18 times [2018-07-23 15:34:29,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,560 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,560 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:34:29,561 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:34:29,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:34:29,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:34:29,562 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-07-23 15:34:29,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,573 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-23 15:34:29,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:34:29,574 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-07-23 15:34:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,574 INFO L225 Difference]: With dead ends: 25 [2018-07-23 15:34:29,574 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 15:34:29,575 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:34:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 15:34:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-23 15:34:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-23 15:34:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-23 15:34:29,579 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-07-23 15:34:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,580 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-23 15:34:29,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:34:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-23 15:34:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:34:29,581 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,581 INFO L353 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-07-23 15:34:29,581 INFO L414 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,581 INFO L82 PathProgramCache]: Analyzing trace with hash -458632058, now seen corresponding path program 19 times [2018-07-23 15:34:29,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,646 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-23 15:34:29,647 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 15:34:29,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 15:34:29,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:34:29,648 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-07-23 15:34:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,664 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-23 15:34:29,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:34:29,664 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-07-23 15:34:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,665 INFO L225 Difference]: With dead ends: 26 [2018-07-23 15:34:29,665 INFO L226 Difference]: Without dead ends: 24 [2018-07-23 15:34:29,666 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:34:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-23 15:34:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-23 15:34:29,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-23 15:34:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-23 15:34:29,670 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-07-23 15:34:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,670 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-23 15:34:29,670 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 15:34:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-23 15:34:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-23 15:34:29,671 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,671 INFO L353 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-07-23 15:34:29,672 INFO L414 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693856, now seen corresponding path program 20 times [2018-07-23 15:34:29,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:34:29,743 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:34:29,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:34:29,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:34:29,744 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-07-23 15:34:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,762 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-23 15:34:29,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:34:29,763 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-07-23 15:34:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,764 INFO L225 Difference]: With dead ends: 27 [2018-07-23 15:34:29,764 INFO L226 Difference]: Without dead ends: 25 [2018-07-23 15:34:29,764 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:34:29,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-23 15:34:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-23 15:34:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 15:34:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-23 15:34:29,768 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-07-23 15:34:29,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,769 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-23 15:34:29,769 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:34:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-23 15:34:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:34:29,770 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,770 INFO L353 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-07-23 15:34:29,770 INFO L414 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161478, now seen corresponding path program 21 times [2018-07-23 15:34:29,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:34:29,871 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:34:29,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:34:29,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:34:29,872 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-07-23 15:34:29,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:29,893 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-23 15:34:29,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:34:29,893 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-07-23 15:34:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:29,894 INFO L225 Difference]: With dead ends: 28 [2018-07-23 15:34:29,898 INFO L226 Difference]: Without dead ends: 26 [2018-07-23 15:34:29,899 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:34:29,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-23 15:34:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-23 15:34:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-23 15:34:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-23 15:34:29,910 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-07-23 15:34:29,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:29,911 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-23 15:34:29,911 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:34:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-23 15:34:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:34:29,912 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:29,912 INFO L353 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-07-23 15:34:29,912 INFO L414 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:29,913 INFO L82 PathProgramCache]: Analyzing trace with hash -818603680, now seen corresponding path program 22 times [2018-07-23 15:34:29,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:29,999 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:29,999 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:34:29,999 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:34:30,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:34:30,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:34:30,001 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-07-23 15:34:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,021 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-23 15:34:30,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:34:30,022 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-07-23 15:34:30,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,023 INFO L225 Difference]: With dead ends: 29 [2018-07-23 15:34:30,023 INFO L226 Difference]: Without dead ends: 27 [2018-07-23 15:34:30,024 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:34:30,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-23 15:34:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-23 15:34:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-23 15:34:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-23 15:34:30,030 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-07-23 15:34:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,031 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-23 15:34:30,031 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:34:30,031 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-23 15:34:30,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:34:30,033 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,033 INFO L353 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-07-23 15:34:30,033 INFO L414 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:30,033 INFO L82 PathProgramCache]: Analyzing trace with hash 393087750, now seen corresponding path program 23 times [2018-07-23 15:34:30,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,158 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-23 15:34:30,162 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-23 15:34:30,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-23 15:34:30,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:34:30,163 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-07-23 15:34:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,178 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-23 15:34:30,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:34:30,178 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-07-23 15:34:30,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,180 INFO L225 Difference]: With dead ends: 30 [2018-07-23 15:34:30,180 INFO L226 Difference]: Without dead ends: 28 [2018-07-23 15:34:30,183 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:34:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-23 15:34:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-23 15:34:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-23 15:34:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-23 15:34:30,192 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-07-23 15:34:30,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,192 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-23 15:34:30,192 INFO L472 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-23 15:34:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-23 15:34:30,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-23 15:34:30,193 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,195 INFO L353 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-07-23 15:34:30,195 INFO L414 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:30,195 INFO L82 PathProgramCache]: Analyzing trace with hash -699183584, now seen corresponding path program 24 times [2018-07-23 15:34:30,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,302 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:34:30,303 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:34:30,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:34:30,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:34:30,304 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-07-23 15:34:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,322 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-23 15:34:30,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:34:30,323 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-07-23 15:34:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,323 INFO L225 Difference]: With dead ends: 31 [2018-07-23 15:34:30,324 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 15:34:30,326 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:34:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 15:34:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-23 15:34:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-23 15:34:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-23 15:34:30,333 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-07-23 15:34:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,333 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-23 15:34:30,333 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:34:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-23 15:34:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 15:34:30,334 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,335 INFO L353 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-07-23 15:34:30,335 INFO L414 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:30,335 INFO L82 PathProgramCache]: Analyzing trace with hash -199856570, now seen corresponding path program 25 times [2018-07-23 15:34:30,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:34:30,449 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:34:30,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:34:30,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:34:30,453 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-07-23 15:34:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,476 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-23 15:34:30,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:34:30,477 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-07-23 15:34:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,477 INFO L225 Difference]: With dead ends: 32 [2018-07-23 15:34:30,477 INFO L226 Difference]: Without dead ends: 30 [2018-07-23 15:34:30,480 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:34:30,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-23 15:34:30,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-23 15:34:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-23 15:34:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-23 15:34:30,484 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-07-23 15:34:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,485 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-23 15:34:30,485 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:34:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-23 15:34:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:34:30,486 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,486 INFO L353 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-07-23 15:34:30,486 INFO L414 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:30,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588320, now seen corresponding path program 26 times [2018-07-23 15:34:30,489 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:34:30,623 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:34:30,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:34:30,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:34:30,625 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-07-23 15:34:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,645 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-23 15:34:30,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:34:30,645 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-07-23 15:34:30,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,646 INFO L225 Difference]: With dead ends: 33 [2018-07-23 15:34:30,646 INFO L226 Difference]: Without dead ends: 31 [2018-07-23 15:34:30,647 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:34:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-23 15:34:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-23 15:34:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-23 15:34:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-23 15:34:30,651 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-07-23 15:34:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,652 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-23 15:34:30,652 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:34:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-23 15:34:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-23 15:34:30,653 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,653 INFO L353 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-07-23 15:34:30,653 INFO L414 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:30,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302278, now seen corresponding path program 27 times [2018-07-23 15:34:30,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-23 15:34:30,771 INFO L450 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-23 15:34:30,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-23 15:34:30,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:34:30,772 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-07-23 15:34:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,791 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-23 15:34:30,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:34:30,791 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-07-23 15:34:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,792 INFO L225 Difference]: With dead ends: 34 [2018-07-23 15:34:30,792 INFO L226 Difference]: Without dead ends: 32 [2018-07-23 15:34:30,793 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:34:30,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-23 15:34:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-23 15:34:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-23 15:34:30,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-23 15:34:30,797 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-07-23 15:34:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,797 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-23 15:34:30,797 INFO L472 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-23 15:34:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-23 15:34:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-23 15:34:30,798 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,798 INFO L353 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-07-23 15:34:30,798 INFO L414 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:30,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336992, now seen corresponding path program 28 times [2018-07-23 15:34:30,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:30,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:30,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:34:30,933 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:34:30,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:34:30,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:34:30,934 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-07-23 15:34:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:30,948 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-23 15:34:30,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:34:30,948 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-07-23 15:34:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:30,949 INFO L225 Difference]: With dead ends: 35 [2018-07-23 15:34:30,949 INFO L226 Difference]: Without dead ends: 33 [2018-07-23 15:34:30,950 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:34:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-23 15:34:30,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-23 15:34:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-23 15:34:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-23 15:34:30,954 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-07-23 15:34:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:30,955 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-23 15:34:30,955 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:34:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-23 15:34:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 15:34:30,955 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:30,956 INFO L353 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-07-23 15:34:30,956 INFO L414 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:30,956 INFO L82 PathProgramCache]: Analyzing trace with hash 125289670, now seen corresponding path program 29 times [2018-07-23 15:34:30,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:34:31,089 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:34:31,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:34:31,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:34:31,090 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-07-23 15:34:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,111 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-23 15:34:31,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:34:31,111 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-07-23 15:34:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,112 INFO L225 Difference]: With dead ends: 36 [2018-07-23 15:34:31,112 INFO L226 Difference]: Without dead ends: 34 [2018-07-23 15:34:31,113 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:34:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-23 15:34:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-23 15:34:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-23 15:34:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-23 15:34:31,117 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-07-23 15:34:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,117 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-23 15:34:31,117 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:34:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-23 15:34:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-23 15:34:31,118 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,118 INFO L353 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-07-23 15:34:31,119 INFO L414 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:31,119 INFO L82 PathProgramCache]: Analyzing trace with hash -410989472, now seen corresponding path program 30 times [2018-07-23 15:34:31,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,254 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:34:31,255 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:34:31,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:34:31,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:34:31,256 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-07-23 15:34:31,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,274 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-23 15:34:31,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:34:31,274 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-07-23 15:34:31,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,275 INFO L225 Difference]: With dead ends: 37 [2018-07-23 15:34:31,275 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:34:31,276 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:34:31,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:34:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-23 15:34:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-23 15:34:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-23 15:34:31,280 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-07-23 15:34:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,280 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-23 15:34:31,280 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:34:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-23 15:34:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 15:34:31,281 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,281 INFO L353 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-07-23 15:34:31,281 INFO L414 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:31,281 INFO L82 PathProgramCache]: Analyzing trace with hash 144226310, now seen corresponding path program 31 times [2018-07-23 15:34:31,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-23 15:34:31,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-23 15:34:31,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-23 15:34:31,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:34:31,416 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-07-23 15:34:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,432 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-23 15:34:31,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:34:31,432 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-07-23 15:34:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,433 INFO L225 Difference]: With dead ends: 38 [2018-07-23 15:34:31,433 INFO L226 Difference]: Without dead ends: 36 [2018-07-23 15:34:31,434 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:34:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-23 15:34:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-23 15:34:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-23 15:34:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-23 15:34:31,438 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-07-23 15:34:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,438 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-23 15:34:31,438 INFO L472 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-23 15:34:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-23 15:34:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-23 15:34:31,439 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,439 INFO L353 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-07-23 15:34:31,439 INFO L414 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:31,439 INFO L82 PathProgramCache]: Analyzing trace with hash 176046368, now seen corresponding path program 32 times [2018-07-23 15:34:31,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:34:31,630 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:34:31,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:34:31,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:34:31,631 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-07-23 15:34:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,652 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-23 15:34:31,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:34:31,652 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-07-23 15:34:31,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,653 INFO L225 Difference]: With dead ends: 39 [2018-07-23 15:34:31,653 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 15:34:31,654 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:34:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 15:34:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-23 15:34:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 15:34:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-23 15:34:31,657 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-07-23 15:34:31,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,658 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-23 15:34:31,658 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:34:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-23 15:34:31,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 15:34:31,658 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,658 INFO L353 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-07-23 15:34:31,659 INFO L414 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468166, now seen corresponding path program 33 times [2018-07-23 15:34:31,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,792 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:34:31,793 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:34:31,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:34:31,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:34:31,795 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-07-23 15:34:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,817 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-23 15:34:31,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:34:31,817 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-07-23 15:34:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,818 INFO L225 Difference]: With dead ends: 40 [2018-07-23 15:34:31,818 INFO L226 Difference]: Without dead ends: 38 [2018-07-23 15:34:31,819 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:34:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-23 15:34:31,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-23 15:34:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-23 15:34:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-23 15:34:31,822 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-07-23 15:34:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:31,822 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-23 15:34:31,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:34:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-23 15:34:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-23 15:34:31,823 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:31,823 INFO L353 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-07-23 15:34:31,823 INFO L414 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:31,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772832, now seen corresponding path program 34 times [2018-07-23 15:34:31,824 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:31,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:31,970 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:34:31,970 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:34:31,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:34:31,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:34:31,972 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-07-23 15:34:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:31,994 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-23 15:34:31,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:34:31,994 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-07-23 15:34:31,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:31,995 INFO L225 Difference]: With dead ends: 41 [2018-07-23 15:34:31,995 INFO L226 Difference]: Without dead ends: 39 [2018-07-23 15:34:31,996 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:34:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-23 15:34:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-23 15:34:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-23 15:34:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-23 15:34:31,999 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-07-23 15:34:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,007 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-23 15:34:32,007 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:34:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-23 15:34:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-23 15:34:32,008 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,008 INFO L353 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-07-23 15:34:32,008 INFO L414 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:32,008 INFO L82 PathProgramCache]: Analyzing trace with hash 440348294, now seen corresponding path program 35 times [2018-07-23 15:34:32,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-23 15:34:32,173 INFO L450 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-23 15:34:32,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-23 15:34:32,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:34:32,175 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-07-23 15:34:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,192 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-23 15:34:32,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:34:32,192 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-07-23 15:34:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,193 INFO L225 Difference]: With dead ends: 42 [2018-07-23 15:34:32,193 INFO L226 Difference]: Without dead ends: 40 [2018-07-23 15:34:32,194 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:34:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-23 15:34:32,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-23 15:34:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-23 15:34:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-23 15:34:32,197 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-07-23 15:34:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,197 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-23 15:34:32,197 INFO L472 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-23 15:34:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-23 15:34:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-23 15:34:32,197 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,198 INFO L353 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-07-23 15:34:32,198 INFO L414 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:32,198 INFO L82 PathProgramCache]: Analyzing trace with hash 765893280, now seen corresponding path program 36 times [2018-07-23 15:34:32,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:34:32,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:34:32,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:34:32,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:34:32,360 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-07-23 15:34:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,378 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-23 15:34:32,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:34:32,378 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-07-23 15:34:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,379 INFO L225 Difference]: With dead ends: 43 [2018-07-23 15:34:32,379 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 15:34:32,381 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:34:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 15:34:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-23 15:34:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-23 15:34:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-23 15:34:32,383 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-07-23 15:34:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,384 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-23 15:34:32,384 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:34:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-23 15:34:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 15:34:32,384 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,385 INFO L353 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-07-23 15:34:32,385 INFO L414 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:32,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2027114042, now seen corresponding path program 37 times [2018-07-23 15:34:32,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:34:32,553 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:34:32,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:34:32,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:34:32,555 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-07-23 15:34:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,576 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-23 15:34:32,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-23 15:34:32,577 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-07-23 15:34:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,577 INFO L225 Difference]: With dead ends: 44 [2018-07-23 15:34:32,577 INFO L226 Difference]: Without dead ends: 42 [2018-07-23 15:34:32,578 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:34:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-23 15:34:32,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-23 15:34:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-23 15:34:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-23 15:34:32,582 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-07-23 15:34:32,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,583 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-23 15:34:32,583 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:34:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-23 15:34:32,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-23 15:34:32,587 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,587 INFO L353 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-07-23 15:34:32,587 INFO L414 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:32,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972192, now seen corresponding path program 38 times [2018-07-23 15:34:32,588 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:34:32,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:34:32,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:34:32,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:34:32,753 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-07-23 15:34:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,776 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-23 15:34:32,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:34:32,776 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-07-23 15:34:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,777 INFO L225 Difference]: With dead ends: 45 [2018-07-23 15:34:32,777 INFO L226 Difference]: Without dead ends: 43 [2018-07-23 15:34:32,778 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:34:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-23 15:34:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-23 15:34:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-23 15:34:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-23 15:34:32,781 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-07-23 15:34:32,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,781 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-23 15:34:32,781 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:34:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-23 15:34:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 15:34:32,788 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,788 INFO L353 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-07-23 15:34:32,788 INFO L414 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:32,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495750, now seen corresponding path program 39 times [2018-07-23 15:34:32,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:32,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:32,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-23 15:34:32,952 INFO L450 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-23 15:34:32,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-23 15:34:32,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:34:32,954 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-07-23 15:34:32,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:32,972 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-23 15:34:32,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-23 15:34:32,973 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-07-23 15:34:32,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:32,973 INFO L225 Difference]: With dead ends: 46 [2018-07-23 15:34:32,973 INFO L226 Difference]: Without dead ends: 44 [2018-07-23 15:34:32,974 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:34:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-23 15:34:32,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-23 15:34:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-23 15:34:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-23 15:34:32,977 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-07-23 15:34:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:32,977 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-23 15:34:32,977 INFO L472 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-23 15:34:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-23 15:34:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-23 15:34:32,978 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:32,978 INFO L353 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-07-23 15:34:32,978 INFO L414 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:32,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791456, now seen corresponding path program 40 times [2018-07-23 15:34:32,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:34:33,146 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:34:33,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:34:33,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:34:33,148 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-07-23 15:34:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,173 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-23 15:34:33,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:34:33,173 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-07-23 15:34:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,174 INFO L225 Difference]: With dead ends: 47 [2018-07-23 15:34:33,174 INFO L226 Difference]: Without dead ends: 45 [2018-07-23 15:34:33,175 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:34:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-23 15:34:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-23 15:34:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-23 15:34:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-23 15:34:33,178 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-07-23 15:34:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,178 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-23 15:34:33,178 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:34:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-23 15:34:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 15:34:33,179 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,179 INFO L353 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-07-23 15:34:33,179 INFO L414 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:33,179 INFO L82 PathProgramCache]: Analyzing trace with hash -692041658, now seen corresponding path program 41 times [2018-07-23 15:34:33,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,377 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:34:33,378 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:34:33,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:34:33,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:34:33,379 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-07-23 15:34:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,400 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-23 15:34:33,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:34:33,400 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-07-23 15:34:33,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,401 INFO L225 Difference]: With dead ends: 48 [2018-07-23 15:34:33,401 INFO L226 Difference]: Without dead ends: 46 [2018-07-23 15:34:33,402 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:34:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-23 15:34:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-23 15:34:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-23 15:34:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-23 15:34:33,405 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-07-23 15:34:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,406 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-23 15:34:33,406 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:34:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-23 15:34:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-23 15:34:33,406 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,407 INFO L353 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-07-23 15:34:33,407 INFO L414 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:33,407 INFO L82 PathProgramCache]: Analyzing trace with hash 21543136, now seen corresponding path program 42 times [2018-07-23 15:34:33,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:34:33,595 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:34:33,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:34:33,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:34:33,597 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-07-23 15:34:33,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,622 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-23 15:34:33,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:34:33,623 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-07-23 15:34:33,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,623 INFO L225 Difference]: With dead ends: 49 [2018-07-23 15:34:33,623 INFO L226 Difference]: Without dead ends: 47 [2018-07-23 15:34:33,625 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:34:33,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-23 15:34:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-23 15:34:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-23 15:34:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-23 15:34:33,627 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-07-23 15:34:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,627 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-23 15:34:33,628 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:34:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-23 15:34:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-23 15:34:33,628 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,628 INFO L353 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-07-23 15:34:33,629 INFO L414 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:33,629 INFO L82 PathProgramCache]: Analyzing trace with hash 667835270, now seen corresponding path program 43 times [2018-07-23 15:34:33,629 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:33,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:33,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-23 15:34:33,814 INFO L450 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-23 15:34:33,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-23 15:34:33,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:34:33,816 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-07-23 15:34:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:33,842 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-23 15:34:33,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-23 15:34:33,842 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-07-23 15:34:33,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:33,843 INFO L225 Difference]: With dead ends: 50 [2018-07-23 15:34:33,843 INFO L226 Difference]: Without dead ends: 48 [2018-07-23 15:34:33,844 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:34:33,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-23 15:34:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-23 15:34:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-23 15:34:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-23 15:34:33,847 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-07-23 15:34:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:33,847 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-23 15:34:33,847 INFO L472 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-23 15:34:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-23 15:34:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-23 15:34:33,848 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:33,848 INFO L353 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-07-23 15:34:33,848 INFO L414 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:33,848 INFO L82 PathProgramCache]: Analyzing trace with hash -771945056, now seen corresponding path program 44 times [2018-07-23 15:34:33,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,055 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,055 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:34:34,056 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:34:34,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:34:34,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:34:34,058 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-07-23 15:34:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,081 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-23 15:34:34,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:34:34,081 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-07-23 15:34:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,082 INFO L225 Difference]: With dead ends: 51 [2018-07-23 15:34:34,082 INFO L226 Difference]: Without dead ends: 49 [2018-07-23 15:34:34,083 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:34:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-23 15:34:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-23 15:34:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-23 15:34:34,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-23 15:34:34,086 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-07-23 15:34:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,086 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-23 15:34:34,086 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:34:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-23 15:34:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-23 15:34:34,087 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,087 INFO L353 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-07-23 15:34:34,087 INFO L414 AbstractCegarLoop]: === Iteration 46 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:34,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505094, now seen corresponding path program 45 times [2018-07-23 15:34:34,088 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:34:34,300 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:34:34,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:34:34,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:34:34,302 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-07-23 15:34:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,325 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-23 15:34:34,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:34:34,325 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-07-23 15:34:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,326 INFO L225 Difference]: With dead ends: 52 [2018-07-23 15:34:34,326 INFO L226 Difference]: Without dead ends: 50 [2018-07-23 15:34:34,346 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:34:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-23 15:34:34,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-23 15:34:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-23 15:34:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-23 15:34:34,355 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-07-23 15:34:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,356 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-23 15:34:34,356 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:34:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-23 15:34:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-23 15:34:34,359 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,359 INFO L353 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-07-23 15:34:34,359 INFO L414 AbstractCegarLoop]: === Iteration 47 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:34,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081120, now seen corresponding path program 46 times [2018-07-23 15:34:34,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:34:34,534 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:34:34,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:34:34,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:34:34,536 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-07-23 15:34:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,559 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-23 15:34:34,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:34:34,559 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-07-23 15:34:34,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,560 INFO L225 Difference]: With dead ends: 53 [2018-07-23 15:34:34,560 INFO L226 Difference]: Without dead ends: 51 [2018-07-23 15:34:34,561 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:34:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-23 15:34:34,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-23 15:34:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-23 15:34:34,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-23 15:34:34,564 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-07-23 15:34:34,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,564 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-23 15:34:34,564 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:34:34,564 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-23 15:34:34,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 15:34:34,565 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,565 INFO L353 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-07-23 15:34:34,565 INFO L414 AbstractCegarLoop]: === Iteration 48 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:34,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192890, now seen corresponding path program 47 times [2018-07-23 15:34:34,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-23 15:34:34,737 INFO L450 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-23 15:34:34,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-23 15:34:34,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:34:34,738 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-07-23 15:34:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,760 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-23 15:34:34,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-23 15:34:34,761 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-07-23 15:34:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,761 INFO L225 Difference]: With dead ends: 54 [2018-07-23 15:34:34,761 INFO L226 Difference]: Without dead ends: 52 [2018-07-23 15:34:34,762 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:34:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-23 15:34:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-23 15:34:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-23 15:34:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-23 15:34:34,767 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-07-23 15:34:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,767 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-23 15:34:34,767 INFO L472 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-23 15:34:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-23 15:34:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-23 15:34:34,768 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,768 INFO L353 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-07-23 15:34:34,769 INFO L414 AbstractCegarLoop]: === Iteration 49 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:34,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593312, now seen corresponding path program 48 times [2018-07-23 15:34:34,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:34,950 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:34,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:34:34,950 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:34:34,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:34:34,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:34:34,951 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-07-23 15:34:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:34,987 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-23 15:34:34,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:34:34,987 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-07-23 15:34:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:34,988 INFO L225 Difference]: With dead ends: 55 [2018-07-23 15:34:34,988 INFO L226 Difference]: Without dead ends: 53 [2018-07-23 15:34:34,989 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:34:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-23 15:34:34,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-23 15:34:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-23 15:34:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-23 15:34:34,992 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-07-23 15:34:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:34,993 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-23 15:34:34,993 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:34:34,993 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-23 15:34:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 15:34:34,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:34,994 INFO L353 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-07-23 15:34:34,994 INFO L414 AbstractCegarLoop]: === Iteration 50 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:34,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314938, now seen corresponding path program 49 times [2018-07-23 15:34:34,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:34:35,184 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:34:35,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:34:35,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:34:35,185 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-07-23 15:34:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,214 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-23 15:34:35,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-23 15:34:35,215 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-07-23 15:34:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,215 INFO L225 Difference]: With dead ends: 56 [2018-07-23 15:34:35,216 INFO L226 Difference]: Without dead ends: 54 [2018-07-23 15:34:35,216 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:34:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-23 15:34:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-23 15:34:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-23 15:34:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-23 15:34:35,219 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-07-23 15:34:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,219 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-23 15:34:35,219 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:34:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-23 15:34:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-23 15:34:35,220 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,220 INFO L353 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-07-23 15:34:35,220 INFO L414 AbstractCegarLoop]: === Iteration 51 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash -105059360, now seen corresponding path program 50 times [2018-07-23 15:34:35,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,410 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:34:35,411 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:34:35,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:34:35,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:34:35,412 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-07-23 15:34:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,445 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-23 15:34:35,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:34:35,445 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-07-23 15:34:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,446 INFO L225 Difference]: With dead ends: 57 [2018-07-23 15:34:35,446 INFO L226 Difference]: Without dead ends: 55 [2018-07-23 15:34:35,447 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:34:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-23 15:34:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-23 15:34:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-23 15:34:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-23 15:34:35,450 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-07-23 15:34:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,450 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-23 15:34:35,450 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:34:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-23 15:34:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-23 15:34:35,451 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,451 INFO L353 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-07-23 15:34:35,451 INFO L414 AbstractCegarLoop]: === Iteration 52 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125190, now seen corresponding path program 51 times [2018-07-23 15:34:35,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,642 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-23 15:34:35,642 INFO L450 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-23 15:34:35,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-23 15:34:35,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:34:35,644 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-07-23 15:34:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,668 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-23 15:34:35,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-23 15:34:35,668 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-07-23 15:34:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,669 INFO L225 Difference]: With dead ends: 58 [2018-07-23 15:34:35,669 INFO L226 Difference]: Without dead ends: 56 [2018-07-23 15:34:35,670 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:34:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-23 15:34:35,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-23 15:34:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-23 15:34:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-23 15:34:35,673 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-07-23 15:34:35,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,674 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-23 15:34:35,674 INFO L472 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-23 15:34:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-23 15:34:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-23 15:34:35,674 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,674 INFO L353 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-07-23 15:34:35,675 INFO L414 AbstractCegarLoop]: === Iteration 53 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:35,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107872, now seen corresponding path program 52 times [2018-07-23 15:34:35,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:35,868 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:35,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:34:35,868 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:34:35,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:34:35,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:34:35,870 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-07-23 15:34:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:35,897 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-23 15:34:35,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:34:35,897 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-07-23 15:34:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:35,898 INFO L225 Difference]: With dead ends: 59 [2018-07-23 15:34:35,898 INFO L226 Difference]: Without dead ends: 57 [2018-07-23 15:34:35,899 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:34:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-23 15:34:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-23 15:34:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 15:34:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-23 15:34:35,902 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-07-23 15:34:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:35,902 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-23 15:34:35,903 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:34:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-23 15:34:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 15:34:35,903 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:35,903 INFO L353 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-07-23 15:34:35,904 INFO L414 AbstractCegarLoop]: === Iteration 54 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:35,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832646, now seen corresponding path program 53 times [2018-07-23 15:34:35,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:34:36,109 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:34:36,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:34:36,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:34:36,111 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-07-23 15:34:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,150 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-23 15:34:36,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 15:34:36,151 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-07-23 15:34:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,152 INFO L225 Difference]: With dead ends: 60 [2018-07-23 15:34:36,152 INFO L226 Difference]: Without dead ends: 58 [2018-07-23 15:34:36,153 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:34:36,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-23 15:34:36,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-23 15:34:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-23 15:34:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-23 15:34:36,157 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-07-23 15:34:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,157 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-23 15:34:36,157 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:34:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-23 15:34:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-23 15:34:36,158 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,158 INFO L353 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-07-23 15:34:36,158 INFO L414 AbstractCegarLoop]: === Iteration 55 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895584, now seen corresponding path program 54 times [2018-07-23 15:34:36,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:34:36,380 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:34:36,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:34:36,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:34:36,382 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-07-23 15:34:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,416 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-23 15:34:36,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:34:36,416 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-07-23 15:34:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,417 INFO L225 Difference]: With dead ends: 61 [2018-07-23 15:34:36,417 INFO L226 Difference]: Without dead ends: 59 [2018-07-23 15:34:36,418 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:34:36,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-23 15:34:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-23 15:34:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-23 15:34:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-23 15:34:36,421 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-07-23 15:34:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,422 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-23 15:34:36,422 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:34:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-23 15:34:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-23 15:34:36,423 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,423 INFO L353 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-07-23 15:34:36,423 INFO L414 AbstractCegarLoop]: === Iteration 56 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash -836059386, now seen corresponding path program 55 times [2018-07-23 15:34:36,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:36,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:36,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-23 15:34:36,703 INFO L450 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-23 15:34:36,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-23 15:34:36,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:34:36,705 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-07-23 15:34:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:36,736 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-23 15:34:36,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-23 15:34:36,736 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-07-23 15:34:36,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:36,737 INFO L225 Difference]: With dead ends: 62 [2018-07-23 15:34:36,737 INFO L226 Difference]: Without dead ends: 60 [2018-07-23 15:34:36,739 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:34:36,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-23 15:34:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-23 15:34:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-23 15:34:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-23 15:34:36,743 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-07-23 15:34:36,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:36,744 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-23 15:34:36,744 INFO L472 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-23 15:34:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-23 15:34:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-23 15:34:36,745 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:36,745 INFO L353 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-07-23 15:34:36,745 INFO L414 AbstractCegarLoop]: === Iteration 57 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:36,745 INFO L82 PathProgramCache]: Analyzing trace with hash -148039136, now seen corresponding path program 56 times [2018-07-23 15:34:36,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:34:37,027 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:34:37,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:34:37,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:34:37,028 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-07-23 15:34:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,072 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-23 15:34:37,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:34:37,072 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-07-23 15:34:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,073 INFO L225 Difference]: With dead ends: 63 [2018-07-23 15:34:37,073 INFO L226 Difference]: Without dead ends: 61 [2018-07-23 15:34:37,074 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:34:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-23 15:34:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-23 15:34:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 15:34:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-23 15:34:37,077 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-07-23 15:34:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,077 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-23 15:34:37,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:34:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-23 15:34:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 15:34:37,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,079 INFO L353 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-07-23 15:34:37,079 INFO L414 AbstractCegarLoop]: === Iteration 58 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:37,079 INFO L82 PathProgramCache]: Analyzing trace with hash -294247866, now seen corresponding path program 57 times [2018-07-23 15:34:37,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:34:37,296 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:34:37,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:34:37,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:34:37,298 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-07-23 15:34:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,340 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-23 15:34:37,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-23 15:34:37,340 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-07-23 15:34:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,341 INFO L225 Difference]: With dead ends: 64 [2018-07-23 15:34:37,341 INFO L226 Difference]: Without dead ends: 62 [2018-07-23 15:34:37,344 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:34:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-23 15:34:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-23 15:34:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-23 15:34:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-23 15:34:37,347 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-07-23 15:34:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,347 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-23 15:34:37,347 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:34:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-23 15:34:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-23 15:34:37,348 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,348 INFO L353 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-07-23 15:34:37,348 INFO L414 AbstractCegarLoop]: === Iteration 59 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash -531751200, now seen corresponding path program 58 times [2018-07-23 15:34:37,348 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:34:37,594 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:34:37,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:34:37,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:34:37,596 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-07-23 15:34:37,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,638 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-23 15:34:37,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:34:37,638 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-07-23 15:34:37,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,639 INFO L225 Difference]: With dead ends: 65 [2018-07-23 15:34:37,639 INFO L226 Difference]: Without dead ends: 63 [2018-07-23 15:34:37,640 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:34:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-23 15:34:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-23 15:34:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-23 15:34:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-23 15:34:37,643 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-07-23 15:34:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,643 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-23 15:34:37,644 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:34:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-23 15:34:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-23 15:34:37,644 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,644 INFO L353 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-07-23 15:34:37,645 INFO L414 AbstractCegarLoop]: === Iteration 60 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:37,645 INFO L82 PathProgramCache]: Analyzing trace with hash 695580038, now seen corresponding path program 59 times [2018-07-23 15:34:37,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:37,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:37,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-23 15:34:37,895 INFO L450 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-23 15:34:37,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-23 15:34:37,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:34:37,897 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-07-23 15:34:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:37,941 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-23 15:34:37,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-23 15:34:37,941 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-07-23 15:34:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:37,942 INFO L225 Difference]: With dead ends: 66 [2018-07-23 15:34:37,942 INFO L226 Difference]: Without dead ends: 64 [2018-07-23 15:34:37,944 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:34:37,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-23 15:34:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-23 15:34:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-23 15:34:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-23 15:34:37,947 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-07-23 15:34:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:37,948 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-23 15:34:37,948 INFO L472 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-23 15:34:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-23 15:34:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-23 15:34:37,949 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:37,949 INFO L353 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-07-23 15:34:37,949 INFO L414 AbstractCegarLoop]: === Iteration 61 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:37,949 INFO L82 PathProgramCache]: Analyzing trace with hash 88142752, now seen corresponding path program 60 times [2018-07-23 15:34:37,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:38,180 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:38,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:34:38,180 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:34:38,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:34:38,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:34:38,182 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-07-23 15:34:38,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:38,224 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-23 15:34:38,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:34:38,225 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-07-23 15:34:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:38,226 INFO L225 Difference]: With dead ends: 67 [2018-07-23 15:34:38,226 INFO L226 Difference]: Without dead ends: 65 [2018-07-23 15:34:38,227 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:34:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-23 15:34:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-23 15:34:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-23 15:34:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-23 15:34:38,233 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-07-23 15:34:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:38,234 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-23 15:34:38,234 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:34:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-23 15:34:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 15:34:38,234 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:38,235 INFO L353 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-07-23 15:34:38,235 INFO L414 AbstractCegarLoop]: === Iteration 62 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:38,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543930, now seen corresponding path program 61 times [2018-07-23 15:34:38,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:38,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:38,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:34:38,490 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:34:38,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:34:38,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:34:38,492 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-07-23 15:34:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:38,543 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-23 15:34:38,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-23 15:34:38,543 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-07-23 15:34:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:38,544 INFO L225 Difference]: With dead ends: 68 [2018-07-23 15:34:38,544 INFO L226 Difference]: Without dead ends: 66 [2018-07-23 15:34:38,546 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:34:38,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-23 15:34:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-23 15:34:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-23 15:34:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-23 15:34:38,549 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-07-23 15:34:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:38,549 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-23 15:34:38,549 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:34:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-23 15:34:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-23 15:34:38,550 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:38,550 INFO L353 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-07-23 15:34:38,550 INFO L414 AbstractCegarLoop]: === Iteration 63 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:38,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223520, now seen corresponding path program 62 times [2018-07-23 15:34:38,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:38,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:38,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:34:38,781 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:34:38,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:34:38,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:34:38,783 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-07-23 15:34:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:38,829 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-23 15:34:38,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:34:38,829 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-07-23 15:34:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:38,830 INFO L225 Difference]: With dead ends: 69 [2018-07-23 15:34:38,830 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 15:34:38,831 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:34:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 15:34:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-23 15:34:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 15:34:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-23 15:34:38,835 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-07-23 15:34:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:38,835 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-23 15:34:38,835 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:34:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-23 15:34:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-23 15:34:38,836 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:38,836 INFO L353 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-07-23 15:34:38,836 INFO L414 AbstractCegarLoop]: === Iteration 64 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:38,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774598, now seen corresponding path program 63 times [2018-07-23 15:34:38,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:39,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:39,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-23 15:34:39,064 INFO L450 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-23 15:34:39,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-23 15:34:39,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:34:39,068 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-07-23 15:34:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:39,104 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-23 15:34:39,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-23 15:34:39,104 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-07-23 15:34:39,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:39,105 INFO L225 Difference]: With dead ends: 70 [2018-07-23 15:34:39,105 INFO L226 Difference]: Without dead ends: 68 [2018-07-23 15:34:39,106 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:34:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-23 15:34:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-23 15:34:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-23 15:34:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-23 15:34:39,110 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-07-23 15:34:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:39,111 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-23 15:34:39,111 INFO L472 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-23 15:34:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-23 15:34:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-23 15:34:39,112 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:39,112 INFO L353 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-07-23 15:34:39,112 INFO L414 AbstractCegarLoop]: === Iteration 65 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:39,112 INFO L82 PathProgramCache]: Analyzing trace with hash -892596960, now seen corresponding path program 64 times [2018-07-23 15:34:39,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:39,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:39,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:34:39,344 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:34:39,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:34:39,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:34:39,345 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-07-23 15:34:39,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:39,392 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-23 15:34:39,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:34:39,392 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-07-23 15:34:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:39,393 INFO L225 Difference]: With dead ends: 71 [2018-07-23 15:34:39,393 INFO L226 Difference]: Without dead ends: 69 [2018-07-23 15:34:39,394 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:34:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-23 15:34:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-23 15:34:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-23 15:34:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-23 15:34:39,397 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-07-23 15:34:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:39,397 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-23 15:34:39,398 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:34:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-23 15:34:39,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 15:34:39,398 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:39,399 INFO L353 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-07-23 15:34:39,399 INFO L414 AbstractCegarLoop]: === Iteration 66 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:39,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703930, now seen corresponding path program 65 times [2018-07-23 15:34:39,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:39,696 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:39,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:34:39,696 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:34:39,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:34:39,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:34:39,698 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-07-23 15:34:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:39,754 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-23 15:34:39,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-23 15:34:39,755 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-07-23 15:34:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:39,756 INFO L225 Difference]: With dead ends: 72 [2018-07-23 15:34:39,756 INFO L226 Difference]: Without dead ends: 70 [2018-07-23 15:34:39,757 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:34:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-23 15:34:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-23 15:34:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-23 15:34:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-23 15:34:39,761 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-07-23 15:34:39,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:39,761 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-23 15:34:39,761 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:34:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-23 15:34:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-23 15:34:39,762 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:39,762 INFO L353 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-07-23 15:34:39,762 INFO L414 AbstractCegarLoop]: === Iteration 67 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:39,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718368, now seen corresponding path program 66 times [2018-07-23 15:34:39,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:40,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:40,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:34:40,031 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:34:40,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:34:40,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:34:40,033 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-07-23 15:34:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:40,075 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-23 15:34:40,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:34:40,075 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-07-23 15:34:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:40,076 INFO L225 Difference]: With dead ends: 73 [2018-07-23 15:34:40,076 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 15:34:40,077 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:34:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 15:34:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-23 15:34:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-23 15:34:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-23 15:34:40,080 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-07-23 15:34:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:40,081 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-23 15:34:40,081 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:34:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-23 15:34:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-23 15:34:40,082 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:40,082 INFO L353 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-07-23 15:34:40,082 INFO L414 AbstractCegarLoop]: === Iteration 68 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438202, now seen corresponding path program 67 times [2018-07-23 15:34:40,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:40,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:40,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-23 15:34:40,324 INFO L450 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-23 15:34:40,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-23 15:34:40,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:34:40,326 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-07-23 15:34:40,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:40,366 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-23 15:34:40,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-23 15:34:40,366 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-07-23 15:34:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:40,367 INFO L225 Difference]: With dead ends: 74 [2018-07-23 15:34:40,367 INFO L226 Difference]: Without dead ends: 72 [2018-07-23 15:34:40,368 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:34:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-23 15:34:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-23 15:34:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-23 15:34:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-23 15:34:40,371 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-07-23 15:34:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:40,372 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-23 15:34:40,372 INFO L472 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-23 15:34:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-23 15:34:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-23 15:34:40,373 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:40,373 INFO L353 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-07-23 15:34:40,373 INFO L414 AbstractCegarLoop]: === Iteration 69 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:40,373 INFO L82 PathProgramCache]: Analyzing trace with hash 976119456, now seen corresponding path program 68 times [2018-07-23 15:34:40,373 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:40,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:40,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:34:40,606 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:34:40,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:34:40,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:34:40,607 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-07-23 15:34:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:40,661 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-23 15:34:40,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:34:40,661 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-07-23 15:34:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:40,662 INFO L225 Difference]: With dead ends: 75 [2018-07-23 15:34:40,662 INFO L226 Difference]: Without dead ends: 73 [2018-07-23 15:34:40,663 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:34:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-23 15:34:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-23 15:34:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 15:34:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-23 15:34:40,666 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-07-23 15:34:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:40,666 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-23 15:34:40,666 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:34:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-23 15:34:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-23 15:34:40,667 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:40,667 INFO L353 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-07-23 15:34:40,667 INFO L414 AbstractCegarLoop]: === Iteration 70 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:40,668 INFO L82 PathProgramCache]: Analyzing trace with hash 194930118, now seen corresponding path program 69 times [2018-07-23 15:34:40,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:40,901 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:40,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:34:40,901 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:34:40,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:34:40,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:34:40,903 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-07-23 15:34:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:40,962 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-23 15:34:40,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-23 15:34:40,962 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-07-23 15:34:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:40,963 INFO L225 Difference]: With dead ends: 76 [2018-07-23 15:34:40,963 INFO L226 Difference]: Without dead ends: 74 [2018-07-23 15:34:40,964 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:34:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-23 15:34:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-23 15:34:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-23 15:34:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-23 15:34:40,967 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-07-23 15:34:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:40,967 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-23 15:34:40,967 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:34:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-23 15:34:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-23 15:34:40,968 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:40,968 INFO L353 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-07-23 15:34:40,968 INFO L414 AbstractCegarLoop]: === Iteration 71 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:40,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864416, now seen corresponding path program 70 times [2018-07-23 15:34:40,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:41,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:41,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:34:41,198 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:34:41,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:34:41,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:34:41,200 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-07-23 15:34:41,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:41,257 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-23 15:34:41,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:34:41,257 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-07-23 15:34:41,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:41,258 INFO L225 Difference]: With dead ends: 77 [2018-07-23 15:34:41,258 INFO L226 Difference]: Without dead ends: 75 [2018-07-23 15:34:41,259 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:34:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-23 15:34:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-23 15:34:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-23 15:34:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-23 15:34:41,262 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-07-23 15:34:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:41,262 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-23 15:34:41,262 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:34:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-23 15:34:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-23 15:34:41,263 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:41,263 INFO L353 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-07-23 15:34:41,263 INFO L414 AbstractCegarLoop]: === Iteration 72 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779898, now seen corresponding path program 71 times [2018-07-23 15:34:41,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:41,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:41,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-23 15:34:41,493 INFO L450 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-23 15:34:41,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-23 15:34:41,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:34:41,497 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-07-23 15:34:41,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:41,556 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-23 15:34:41,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-23 15:34:41,556 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-07-23 15:34:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:41,557 INFO L225 Difference]: With dead ends: 78 [2018-07-23 15:34:41,557 INFO L226 Difference]: Without dead ends: 76 [2018-07-23 15:34:41,558 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:34:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-23 15:34:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-23 15:34:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-23 15:34:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-23 15:34:41,561 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-07-23 15:34:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:41,562 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-23 15:34:41,562 INFO L472 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-23 15:34:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-23 15:34:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-23 15:34:41,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:41,563 INFO L353 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-07-23 15:34:41,563 INFO L414 AbstractCegarLoop]: === Iteration 73 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:41,563 INFO L82 PathProgramCache]: Analyzing trace with hash 365428768, now seen corresponding path program 72 times [2018-07-23 15:34:41,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:41,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:41,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:34:41,804 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:34:41,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:34:41,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:34:41,806 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-07-23 15:34:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:41,883 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-23 15:34:41,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:34:41,884 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-07-23 15:34:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:41,885 INFO L225 Difference]: With dead ends: 79 [2018-07-23 15:34:41,885 INFO L226 Difference]: Without dead ends: 77 [2018-07-23 15:34:41,886 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:34:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-23 15:34:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-23 15:34:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-23 15:34:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-23 15:34:41,889 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-07-23 15:34:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:41,890 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-23 15:34:41,890 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:34:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-23 15:34:41,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-23 15:34:41,891 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:41,891 INFO L353 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-07-23 15:34:41,891 INFO L414 AbstractCegarLoop]: === Iteration 74 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:41,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1556612026, now seen corresponding path program 73 times [2018-07-23 15:34:41,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:42,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:42,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:34:42,175 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:34:42,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:34:42,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:34:42,177 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-07-23 15:34:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:42,239 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-23 15:34:42,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-23 15:34:42,239 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-07-23 15:34:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:42,240 INFO L225 Difference]: With dead ends: 80 [2018-07-23 15:34:42,240 INFO L226 Difference]: Without dead ends: 78 [2018-07-23 15:34:42,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:34:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-23 15:34:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-23 15:34:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-23 15:34:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-23 15:34:42,244 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-07-23 15:34:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:42,244 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-23 15:34:42,244 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:34:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-23 15:34:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-23 15:34:42,245 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:42,245 INFO L353 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-07-23 15:34:42,245 INFO L414 AbstractCegarLoop]: === Iteration 75 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:42,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334496, now seen corresponding path program 74 times [2018-07-23 15:34:42,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:42,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:42,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:34:42,515 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:34:42,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:34:42,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:34:42,516 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-07-23 15:34:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:42,579 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-23 15:34:42,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:34:42,579 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-07-23 15:34:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:42,580 INFO L225 Difference]: With dead ends: 81 [2018-07-23 15:34:42,580 INFO L226 Difference]: Without dead ends: 79 [2018-07-23 15:34:42,581 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:34:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-23 15:34:42,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-23 15:34:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-23 15:34:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-23 15:34:42,584 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-07-23 15:34:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:42,584 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-23 15:34:42,585 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:34:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-23 15:34:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-23 15:34:42,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:42,585 INFO L353 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-07-23 15:34:42,586 INFO L414 AbstractCegarLoop]: === Iteration 76 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:42,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600250, now seen corresponding path program 75 times [2018-07-23 15:34:42,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:42,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:42,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-23 15:34:42,819 INFO L450 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-23 15:34:42,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-23 15:34:42,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:34:42,821 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-07-23 15:34:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:42,881 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-23 15:34:42,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-23 15:34:42,881 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-07-23 15:34:42,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:42,882 INFO L225 Difference]: With dead ends: 82 [2018-07-23 15:34:42,882 INFO L226 Difference]: Without dead ends: 80 [2018-07-23 15:34:42,883 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:34:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-23 15:34:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-23 15:34:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-23 15:34:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-23 15:34:42,886 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-07-23 15:34:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:42,887 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-23 15:34:42,887 INFO L472 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-23 15:34:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-23 15:34:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-23 15:34:42,888 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:42,888 INFO L353 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-07-23 15:34:42,888 INFO L414 AbstractCegarLoop]: === Iteration 77 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:42,888 INFO L82 PathProgramCache]: Analyzing trace with hash -268904032, now seen corresponding path program 76 times [2018-07-23 15:34:42,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:43,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:43,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:34:43,142 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:34:43,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:34:43,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:34:43,144 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-07-23 15:34:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:43,201 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-23 15:34:43,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:34:43,201 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-07-23 15:34:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:43,202 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:34:43,202 INFO L226 Difference]: Without dead ends: 81 [2018-07-23 15:34:43,203 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:34:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-23 15:34:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-23 15:34:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-23 15:34:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-23 15:34:43,207 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-07-23 15:34:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:43,208 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-23 15:34:43,208 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:34:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-23 15:34:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-23 15:34:43,209 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:43,209 INFO L353 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-07-23 15:34:43,209 INFO L414 AbstractCegarLoop]: === Iteration 78 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:43,209 INFO L82 PathProgramCache]: Analyzing trace with hash 253907654, now seen corresponding path program 77 times [2018-07-23 15:34:43,210 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:43,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:43,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:34:43,461 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:34:43,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:34:43,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:34:43,462 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-07-23 15:34:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:43,499 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-23 15:34:43,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-23 15:34:43,499 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-07-23 15:34:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:43,500 INFO L225 Difference]: With dead ends: 84 [2018-07-23 15:34:43,500 INFO L226 Difference]: Without dead ends: 82 [2018-07-23 15:34:43,501 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:34:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-23 15:34:43,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-23 15:34:43,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-23 15:34:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-23 15:34:43,504 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-07-23 15:34:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:43,504 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-23 15:34:43,504 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:34:43,504 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-23 15:34:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-23 15:34:43,505 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:43,505 INFO L353 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-07-23 15:34:43,505 INFO L414 AbstractCegarLoop]: === Iteration 79 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:43,506 INFO L82 PathProgramCache]: Analyzing trace with hash -718799264, now seen corresponding path program 78 times [2018-07-23 15:34:43,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:43,756 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:43,756 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:34:43,756 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:34:43,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:34:43,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:34:43,758 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-07-23 15:34:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:43,817 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-23 15:34:43,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:34:43,818 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-07-23 15:34:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:43,819 INFO L225 Difference]: With dead ends: 85 [2018-07-23 15:34:43,819 INFO L226 Difference]: Without dead ends: 83 [2018-07-23 15:34:43,820 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:34:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-23 15:34:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-23 15:34:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-23 15:34:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-23 15:34:43,823 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-07-23 15:34:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:43,823 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-23 15:34:43,823 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:34:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-23 15:34:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 15:34:43,824 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:43,824 INFO L353 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-07-23 15:34:43,824 INFO L414 AbstractCegarLoop]: === Iteration 80 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash -807942650, now seen corresponding path program 79 times [2018-07-23 15:34:43,825 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:44,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:44,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-23 15:34:44,127 INFO L450 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-23 15:34:44,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-23 15:34:44,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:34:44,129 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-07-23 15:34:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:44,219 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-23 15:34:44,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-23 15:34:44,220 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-07-23 15:34:44,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:44,221 INFO L225 Difference]: With dead ends: 86 [2018-07-23 15:34:44,221 INFO L226 Difference]: Without dead ends: 84 [2018-07-23 15:34:44,222 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:34:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-23 15:34:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-23 15:34:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-23 15:34:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-23 15:34:44,226 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-07-23 15:34:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:44,227 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-23 15:34:44,227 INFO L472 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-23 15:34:44,227 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-23 15:34:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-23 15:34:44,228 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:44,228 INFO L353 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-07-23 15:34:44,228 INFO L414 AbstractCegarLoop]: === Iteration 81 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:44,229 INFO L82 PathProgramCache]: Analyzing trace with hash 723579680, now seen corresponding path program 80 times [2018-07-23 15:34:44,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:44,584 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:44,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:34:44,585 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:34:44,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:34:44,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:34:44,587 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-07-23 15:34:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:44,642 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-23 15:34:44,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:34:44,642 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-07-23 15:34:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:44,644 INFO L225 Difference]: With dead ends: 87 [2018-07-23 15:34:44,644 INFO L226 Difference]: Without dead ends: 85 [2018-07-23 15:34:44,645 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:34:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-23 15:34:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-23 15:34:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-23 15:34:44,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-23 15:34:44,648 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-07-23 15:34:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:44,648 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-23 15:34:44,648 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:34:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-23 15:34:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 15:34:44,649 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:44,649 INFO L353 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-07-23 15:34:44,649 INFO L414 AbstractCegarLoop]: === Iteration 82 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:44,649 INFO L82 PathProgramCache]: Analyzing trace with hash 956131654, now seen corresponding path program 81 times [2018-07-23 15:34:44,650 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:44,880 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:44,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:34:44,880 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:34:44,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:34:44,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:34:44,882 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-07-23 15:34:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:44,931 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-23 15:34:44,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-23 15:34:44,931 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-07-23 15:34:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:44,932 INFO L225 Difference]: With dead ends: 88 [2018-07-23 15:34:44,932 INFO L226 Difference]: Without dead ends: 86 [2018-07-23 15:34:44,933 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:34:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-23 15:34:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-23 15:34:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-23 15:34:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-23 15:34:44,936 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-07-23 15:34:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:44,937 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-23 15:34:44,937 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:34:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-23 15:34:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-23 15:34:44,938 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:44,938 INFO L353 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-07-23 15:34:44,938 INFO L414 AbstractCegarLoop]: === Iteration 83 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:44,938 INFO L82 PathProgramCache]: Analyzing trace with hash -424691744, now seen corresponding path program 82 times [2018-07-23 15:34:44,938 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:45,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:45,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:34:45,191 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:34:45,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:34:45,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:34:45,192 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-07-23 15:34:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:45,272 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-23 15:34:45,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:34:45,273 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-07-23 15:34:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:45,273 INFO L225 Difference]: With dead ends: 89 [2018-07-23 15:34:45,274 INFO L226 Difference]: Without dead ends: 87 [2018-07-23 15:34:45,274 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:34:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-23 15:34:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-23 15:34:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-23 15:34:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-23 15:34:45,277 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-07-23 15:34:45,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:45,277 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-23 15:34:45,277 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:34:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-23 15:34:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-23 15:34:45,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:45,278 INFO L353 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-07-23 15:34:45,279 INFO L414 AbstractCegarLoop]: === Iteration 84 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash -280544122, now seen corresponding path program 83 times [2018-07-23 15:34:45,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:45,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:45,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-23 15:34:45,550 INFO L450 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-23 15:34:45,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-23 15:34:45,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:34:45,551 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-07-23 15:34:45,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:45,593 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-23 15:34:45,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-23 15:34:45,594 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-07-23 15:34:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:45,595 INFO L225 Difference]: With dead ends: 90 [2018-07-23 15:34:45,595 INFO L226 Difference]: Without dead ends: 88 [2018-07-23 15:34:45,596 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:34:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-23 15:34:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-23 15:34:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-23 15:34:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-23 15:34:45,599 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-07-23 15:34:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:45,599 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-23 15:34:45,599 INFO L472 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-23 15:34:45,599 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-23 15:34:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-23 15:34:45,600 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:45,600 INFO L353 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-07-23 15:34:45,600 INFO L414 AbstractCegarLoop]: === Iteration 85 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:45,601 INFO L82 PathProgramCache]: Analyzing trace with hash -106935136, now seen corresponding path program 84 times [2018-07-23 15:34:45,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:45,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:45,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:34:45,847 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:34:45,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:34:45,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:34:45,848 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-07-23 15:34:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:45,930 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-23 15:34:45,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:34:45,930 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-07-23 15:34:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:45,931 INFO L225 Difference]: With dead ends: 91 [2018-07-23 15:34:45,931 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 15:34:45,932 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:34:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 15:34:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-23 15:34:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-23 15:34:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-23 15:34:45,934 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-07-23 15:34:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:45,935 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-23 15:34:45,935 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:34:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-23 15:34:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 15:34:45,935 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:45,936 INFO L353 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-07-23 15:34:45,936 INFO L414 AbstractCegarLoop]: === Iteration 86 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:45,936 INFO L82 PathProgramCache]: Analyzing trace with hash 979976134, now seen corresponding path program 85 times [2018-07-23 15:34:45,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:46,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:46,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:34:46,250 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:34:46,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:34:46,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:34:46,251 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-07-23 15:34:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:46,298 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-23 15:34:46,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-23 15:34:46,298 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-07-23 15:34:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:46,299 INFO L225 Difference]: With dead ends: 92 [2018-07-23 15:34:46,299 INFO L226 Difference]: Without dead ends: 90 [2018-07-23 15:34:46,300 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:34:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-23 15:34:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-23 15:34:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-23 15:34:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-23 15:34:46,303 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-07-23 15:34:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:46,304 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-23 15:34:46,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:34:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-23 15:34:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-23 15:34:46,305 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:46,305 INFO L353 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-07-23 15:34:46,305 INFO L414 AbstractCegarLoop]: === Iteration 87 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:46,305 INFO L82 PathProgramCache]: Analyzing trace with hash 314487136, now seen corresponding path program 86 times [2018-07-23 15:34:46,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:46,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:46,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:34:46,627 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:34:46,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:34:46,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:34:46,630 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-07-23 15:34:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:46,744 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-23 15:34:46,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:34:46,744 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-07-23 15:34:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:46,745 INFO L225 Difference]: With dead ends: 93 [2018-07-23 15:34:46,745 INFO L226 Difference]: Without dead ends: 91 [2018-07-23 15:34:46,746 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:34:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-23 15:34:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-23 15:34:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-23 15:34:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-23 15:34:46,750 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-07-23 15:34:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:46,750 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-23 15:34:46,750 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:34:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-23 15:34:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-23 15:34:46,751 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:46,751 INFO L353 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-07-23 15:34:46,751 INFO L414 AbstractCegarLoop]: === Iteration 88 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164678, now seen corresponding path program 87 times [2018-07-23 15:34:46,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:47,123 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:47,123 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-23 15:34:47,123 INFO L450 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-23 15:34:47,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-23 15:34:47,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:34:47,125 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-07-23 15:34:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:47,176 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-23 15:34:47,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-23 15:34:47,176 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-07-23 15:34:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:47,177 INFO L225 Difference]: With dead ends: 94 [2018-07-23 15:34:47,177 INFO L226 Difference]: Without dead ends: 92 [2018-07-23 15:34:47,178 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:34:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-23 15:34:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-23 15:34:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-23 15:34:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-23 15:34:47,181 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-07-23 15:34:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:47,181 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-23 15:34:47,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-23 15:34:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-23 15:34:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-23 15:34:47,182 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:47,182 INFO L353 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-07-23 15:34:47,183 INFO L414 AbstractCegarLoop]: === Iteration 89 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:47,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364704, now seen corresponding path program 88 times [2018-07-23 15:34:47,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:47,504 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:47,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:34:47,505 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:34:47,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:34:47,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:34:47,506 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-07-23 15:34:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:47,603 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-23 15:34:47,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:34:47,603 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-07-23 15:34:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:47,604 INFO L225 Difference]: With dead ends: 95 [2018-07-23 15:34:47,604 INFO L226 Difference]: Without dead ends: 93 [2018-07-23 15:34:47,605 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:34:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-23 15:34:47,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-23 15:34:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-23 15:34:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-23 15:34:47,608 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-07-23 15:34:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:47,608 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-23 15:34:47,608 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:34:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-23 15:34:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 15:34:47,609 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:47,609 INFO L353 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-07-23 15:34:47,609 INFO L414 AbstractCegarLoop]: === Iteration 90 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:47,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663622, now seen corresponding path program 89 times [2018-07-23 15:34:47,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:47,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:47,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:34:47,926 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:34:47,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:34:47,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:34:47,928 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-07-23 15:34:48,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:48,012 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-23 15:34:48,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-23 15:34:48,015 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-07-23 15:34:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:48,016 INFO L225 Difference]: With dead ends: 96 [2018-07-23 15:34:48,016 INFO L226 Difference]: Without dead ends: 94 [2018-07-23 15:34:48,017 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:34:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-23 15:34:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-23 15:34:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-23 15:34:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-23 15:34:48,020 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-07-23 15:34:48,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:48,020 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-23 15:34:48,020 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:34:48,020 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-23 15:34:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-23 15:34:48,021 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:48,021 INFO L353 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-07-23 15:34:48,021 INFO L414 AbstractCegarLoop]: === Iteration 91 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:48,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930080, now seen corresponding path program 90 times [2018-07-23 15:34:48,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:48,376 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:48,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:34:48,376 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:34:48,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:34:48,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:34:48,379 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-07-23 15:34:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:48,432 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-23 15:34:48,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:34:48,432 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-07-23 15:34:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:48,433 INFO L225 Difference]: With dead ends: 97 [2018-07-23 15:34:48,433 INFO L226 Difference]: Without dead ends: 95 [2018-07-23 15:34:48,434 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:34:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-23 15:34:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-23 15:34:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-23 15:34:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-23 15:34:48,437 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-07-23 15:34:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:48,438 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-23 15:34:48,438 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:34:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-23 15:34:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-23 15:34:48,438 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:48,439 INFO L353 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-07-23 15:34:48,439 INFO L414 AbstractCegarLoop]: === Iteration 92 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash 854092166, now seen corresponding path program 91 times [2018-07-23 15:34:48,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:48,738 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:48,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-23 15:34:48,738 INFO L450 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-23 15:34:48,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-23 15:34:48,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:34:48,740 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-07-23 15:34:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:48,818 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-23 15:34:48,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-23 15:34:48,819 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-07-23 15:34:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:48,819 INFO L225 Difference]: With dead ends: 98 [2018-07-23 15:34:48,820 INFO L226 Difference]: Without dead ends: 96 [2018-07-23 15:34:48,820 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:34:48,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-23 15:34:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-23 15:34:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-23 15:34:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-23 15:34:48,823 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-07-23 15:34:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:48,823 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-23 15:34:48,823 INFO L472 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-23 15:34:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-23 15:34:48,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-23 15:34:48,823 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:48,824 INFO L353 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-07-23 15:34:48,824 INFO L414 AbstractCegarLoop]: === Iteration 93 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:48,824 INFO L82 PathProgramCache]: Analyzing trace with hash 707051424, now seen corresponding path program 92 times [2018-07-23 15:34:48,824 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:49,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:49,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:34:49,059 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:34:49,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:34:49,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:34:49,061 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-07-23 15:34:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:49,174 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-23 15:34:49,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:34:49,174 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-07-23 15:34:49,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:49,175 INFO L225 Difference]: With dead ends: 99 [2018-07-23 15:34:49,175 INFO L226 Difference]: Without dead ends: 97 [2018-07-23 15:34:49,175 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:34:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-23 15:34:49,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-23 15:34:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-23 15:34:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-23 15:34:49,179 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-07-23 15:34:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:49,179 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-23 15:34:49,179 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:34:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-23 15:34:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-23 15:34:49,180 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:49,180 INFO L353 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-07-23 15:34:49,180 INFO L414 AbstractCegarLoop]: === Iteration 94 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash 443755718, now seen corresponding path program 93 times [2018-07-23 15:34:49,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:49,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:49,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:34:49,592 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:34:49,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:34:49,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:34:49,593 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-07-23 15:34:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:49,651 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-23 15:34:49,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-23 15:34:49,652 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-07-23 15:34:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:49,652 INFO L225 Difference]: With dead ends: 100 [2018-07-23 15:34:49,652 INFO L226 Difference]: Without dead ends: 98 [2018-07-23 15:34:49,653 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:34:49,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-23 15:34:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-23 15:34:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-23 15:34:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-23 15:34:49,657 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-07-23 15:34:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:49,657 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-23 15:34:49,658 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:34:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-23 15:34:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-23 15:34:49,658 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:49,658 INFO L353 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-07-23 15:34:49,659 INFO L414 AbstractCegarLoop]: === Iteration 95 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:49,659 INFO L82 PathProgramCache]: Analyzing trace with hash 871523424, now seen corresponding path program 94 times [2018-07-23 15:34:49,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:49,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:49,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:34:49,937 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:34:49,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:34:49,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:34:49,938 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-07-23 15:34:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:49,977 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-23 15:34:49,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:34:49,977 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-07-23 15:34:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:49,978 INFO L225 Difference]: With dead ends: 101 [2018-07-23 15:34:49,978 INFO L226 Difference]: Without dead ends: 99 [2018-07-23 15:34:49,978 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:34:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-23 15:34:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-23 15:34:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-23 15:34:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-23 15:34:49,981 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-07-23 15:34:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:49,981 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-23 15:34:49,981 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:34:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-23 15:34:49,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 15:34:49,982 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:49,982 INFO L353 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-07-23 15:34:49,982 INFO L414 AbstractCegarLoop]: === Iteration 96 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:49,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420422, now seen corresponding path program 95 times [2018-07-23 15:34:49,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:50,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:50,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-23 15:34:50,198 INFO L450 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-23 15:34:50,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-23 15:34:50,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:34:50,200 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-07-23 15:34:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:50,240 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-23 15:34:50,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-23 15:34:50,240 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-07-23 15:34:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:50,241 INFO L225 Difference]: With dead ends: 102 [2018-07-23 15:34:50,241 INFO L226 Difference]: Without dead ends: 100 [2018-07-23 15:34:50,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:34:50,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-23 15:34:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-23 15:34:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-23 15:34:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-23 15:34:50,244 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-07-23 15:34:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:50,244 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-23 15:34:50,244 INFO L472 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-23 15:34:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-23 15:34:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-23 15:34:50,245 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:50,245 INFO L353 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-07-23 15:34:50,245 INFO L414 AbstractCegarLoop]: === Iteration 97 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:50,245 INFO L82 PathProgramCache]: Analyzing trace with hash 15325472, now seen corresponding path program 96 times [2018-07-23 15:34:50,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:50,495 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:50,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:34:50,495 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:34:50,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:34:50,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:34:50,497 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-07-23 15:34:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:50,549 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-23 15:34:50,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:34:50,549 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-07-23 15:34:50,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:50,550 INFO L225 Difference]: With dead ends: 103 [2018-07-23 15:34:50,550 INFO L226 Difference]: Without dead ends: 101 [2018-07-23 15:34:50,551 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:34:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-23 15:34:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-23 15:34:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-23 15:34:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-23 15:34:50,554 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-07-23 15:34:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:50,554 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-23 15:34:50,554 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:34:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-23 15:34:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 15:34:50,555 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:50,555 INFO L353 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-07-23 15:34:50,555 INFO L414 AbstractCegarLoop]: === Iteration 98 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:50,556 INFO L82 PathProgramCache]: Analyzing trace with hash 475087686, now seen corresponding path program 97 times [2018-07-23 15:34:50,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:50,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:50,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:34:50,823 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:34:50,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:34:50,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:34:50,824 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-07-23 15:34:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:50,875 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-23 15:34:50,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-23 15:34:50,875 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-07-23 15:34:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:50,876 INFO L225 Difference]: With dead ends: 104 [2018-07-23 15:34:50,876 INFO L226 Difference]: Without dead ends: 102 [2018-07-23 15:34:50,877 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:34:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-23 15:34:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-23 15:34:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-23 15:34:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-23 15:34:50,880 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-07-23 15:34:50,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:50,880 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-23 15:34:50,880 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:34:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-23 15:34:50,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-23 15:34:50,881 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:50,881 INFO L353 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-07-23 15:34:50,881 INFO L414 AbstractCegarLoop]: === Iteration 99 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:50,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814432, now seen corresponding path program 98 times [2018-07-23 15:34:50,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:51,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:51,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:34:51,112 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:34:51,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:34:51,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:34:51,114 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-07-23 15:34:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:51,169 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-23 15:34:51,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:34:51,170 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-07-23 15:34:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:51,170 INFO L225 Difference]: With dead ends: 105 [2018-07-23 15:34:51,170 INFO L226 Difference]: Without dead ends: 103 [2018-07-23 15:34:51,171 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:34:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-23 15:34:51,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-23 15:34:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-23 15:34:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-23 15:34:51,174 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-07-23 15:34:51,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:51,174 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-23 15:34:51,174 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:34:51,174 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-23 15:34:51,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 15:34:51,175 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:51,175 INFO L353 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-07-23 15:34:51,175 INFO L414 AbstractCegarLoop]: === Iteration 100 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:51,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670598, now seen corresponding path program 99 times [2018-07-23 15:34:51,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:51,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:51,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-23 15:34:51,475 INFO L450 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-23 15:34:51,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-23 15:34:51,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:34:51,477 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-07-23 15:34:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:51,525 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-23 15:34:51,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-23 15:34:51,525 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-07-23 15:34:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:51,526 INFO L225 Difference]: With dead ends: 106 [2018-07-23 15:34:51,526 INFO L226 Difference]: Without dead ends: 104 [2018-07-23 15:34:51,527 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:34:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-23 15:34:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-23 15:34:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-23 15:34:51,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-23 15:34:51,530 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-07-23 15:34:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:51,530 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-23 15:34:51,530 INFO L472 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-23 15:34:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-23 15:34:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-23 15:34:51,531 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:51,531 INFO L353 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-07-23 15:34:51,531 INFO L414 AbstractCegarLoop]: === Iteration 101 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:51,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080928, now seen corresponding path program 100 times [2018-07-23 15:34:51,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:51,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:51,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:34:51,805 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:34:51,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:34:51,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:34:51,806 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-07-23 15:34:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:51,855 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-23 15:34:51,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:34:51,855 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-07-23 15:34:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:51,856 INFO L225 Difference]: With dead ends: 107 [2018-07-23 15:34:51,856 INFO L226 Difference]: Without dead ends: 105 [2018-07-23 15:34:51,857 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:34:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-23 15:34:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-23 15:34:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-23 15:34:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-23 15:34:51,860 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-07-23 15:34:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:51,860 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-23 15:34:51,861 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:34:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-23 15:34:51,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 15:34:51,861 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:51,861 INFO L353 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-07-23 15:34:51,861 INFO L414 AbstractCegarLoop]: === Iteration 102 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:51,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833862, now seen corresponding path program 101 times [2018-07-23 15:34:51,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:52,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:52,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:34:52,096 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:34:52,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:34:52,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:34:52,098 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-07-23 15:34:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:52,156 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-23 15:34:52,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-23 15:34:52,156 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-07-23 15:34:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:52,157 INFO L225 Difference]: With dead ends: 108 [2018-07-23 15:34:52,158 INFO L226 Difference]: Without dead ends: 106 [2018-07-23 15:34:52,159 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:34:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-23 15:34:52,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-23 15:34:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-23 15:34:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-23 15:34:52,161 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-07-23 15:34:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:52,162 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-23 15:34:52,162 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:34:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-23 15:34:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-23 15:34:52,162 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:52,163 INFO L353 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-07-23 15:34:52,163 INFO L414 AbstractCegarLoop]: === Iteration 103 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:52,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076704, now seen corresponding path program 102 times [2018-07-23 15:34:52,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:52,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:52,401 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:34:52,401 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:34:52,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:34:52,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:34:52,403 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-07-23 15:34:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:52,482 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-23 15:34:52,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:34:52,482 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-07-23 15:34:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:52,483 INFO L225 Difference]: With dead ends: 109 [2018-07-23 15:34:52,483 INFO L226 Difference]: Without dead ends: 107 [2018-07-23 15:34:52,484 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:34:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-23 15:34:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-23 15:34:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-23 15:34:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-23 15:34:52,486 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-07-23 15:34:52,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:52,487 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-23 15:34:52,487 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:34:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-23 15:34:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 15:34:52,487 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:52,488 INFO L353 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-07-23 15:34:52,488 INFO L414 AbstractCegarLoop]: === Iteration 104 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:52,488 INFO L82 PathProgramCache]: Analyzing trace with hash 748670214, now seen corresponding path program 103 times [2018-07-23 15:34:52,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:52,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:52,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-23 15:34:52,765 INFO L450 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-23 15:34:52,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-23 15:34:52,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:34:52,767 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-07-23 15:34:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:52,883 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-23 15:34:52,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-23 15:34:52,883 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-07-23 15:34:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:52,884 INFO L225 Difference]: With dead ends: 110 [2018-07-23 15:34:52,884 INFO L226 Difference]: Without dead ends: 108 [2018-07-23 15:34:52,884 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:34:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-23 15:34:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-23 15:34:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-23 15:34:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-23 15:34:52,887 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-07-23 15:34:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:52,887 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-23 15:34:52,887 INFO L472 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-23 15:34:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-23 15:34:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-23 15:34:52,888 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:52,888 INFO L353 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-07-23 15:34:52,888 INFO L414 AbstractCegarLoop]: === Iteration 105 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:52,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938208, now seen corresponding path program 104 times [2018-07-23 15:34:52,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:53,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:53,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:34:53,246 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:34:53,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:34:53,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:34:53,249 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-07-23 15:34:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:53,322 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-23 15:34:53,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:34:53,322 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-07-23 15:34:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:53,323 INFO L225 Difference]: With dead ends: 111 [2018-07-23 15:34:53,323 INFO L226 Difference]: Without dead ends: 109 [2018-07-23 15:34:53,324 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:34:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-23 15:34:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-23 15:34:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-23 15:34:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-23 15:34:53,328 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-07-23 15:34:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:53,329 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-23 15:34:53,329 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:34:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-23 15:34:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 15:34:53,329 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:53,330 INFO L353 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-07-23 15:34:53,330 INFO L414 AbstractCegarLoop]: === Iteration 106 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:53,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492346, now seen corresponding path program 105 times [2018-07-23 15:34:53,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:53,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:53,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:34:53,647 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:34:53,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:34:53,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:34:53,649 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-07-23 15:34:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:53,693 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-23 15:34:53,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-23 15:34:53,694 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-07-23 15:34:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:53,694 INFO L225 Difference]: With dead ends: 112 [2018-07-23 15:34:53,694 INFO L226 Difference]: Without dead ends: 110 [2018-07-23 15:34:53,695 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:34:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-23 15:34:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-23 15:34:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-23 15:34:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-23 15:34:53,698 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-07-23 15:34:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:53,698 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-23 15:34:53,698 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:34:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-23 15:34:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-23 15:34:53,699 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:53,699 INFO L353 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-07-23 15:34:53,699 INFO L414 AbstractCegarLoop]: === Iteration 107 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:53,699 INFO L82 PathProgramCache]: Analyzing trace with hash -132755232, now seen corresponding path program 106 times [2018-07-23 15:34:53,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:53,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:53,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:34:53,964 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:34:53,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:34:53,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:34:53,965 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-07-23 15:34:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:54,050 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-23 15:34:54,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:34:54,051 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-07-23 15:34:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:54,051 INFO L225 Difference]: With dead ends: 113 [2018-07-23 15:34:54,051 INFO L226 Difference]: Without dead ends: 111 [2018-07-23 15:34:54,053 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:34:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-23 15:34:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-23 15:34:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-23 15:34:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-23 15:34:54,056 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-07-23 15:34:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:54,056 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-23 15:34:54,056 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:34:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-23 15:34:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 15:34:54,057 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:54,057 INFO L353 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-07-23 15:34:54,058 INFO L414 AbstractCegarLoop]: === Iteration 108 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:54,058 INFO L82 PathProgramCache]: Analyzing trace with hash 179553158, now seen corresponding path program 107 times [2018-07-23 15:34:54,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:54,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:54,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-23 15:34:54,332 INFO L450 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-23 15:34:54,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-23 15:34:54,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:34:54,334 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-07-23 15:34:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:54,437 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-23 15:34:54,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-23 15:34:54,437 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-07-23 15:34:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:54,438 INFO L225 Difference]: With dead ends: 114 [2018-07-23 15:34:54,438 INFO L226 Difference]: Without dead ends: 112 [2018-07-23 15:34:54,439 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:34:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-23 15:34:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-23 15:34:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-23 15:34:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-23 15:34:54,443 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-07-23 15:34:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:54,443 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-23 15:34:54,443 INFO L472 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-23 15:34:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-23 15:34:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-23 15:34:54,444 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:54,444 INFO L353 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-07-23 15:34:54,444 INFO L414 AbstractCegarLoop]: === Iteration 109 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:54,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178656, now seen corresponding path program 108 times [2018-07-23 15:34:54,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:54,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:54,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:34:54,774 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:34:54,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:34:54,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:34:54,776 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-07-23 15:34:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:54,846 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-23 15:34:54,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:34:54,847 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-07-23 15:34:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:54,847 INFO L225 Difference]: With dead ends: 115 [2018-07-23 15:34:54,847 INFO L226 Difference]: Without dead ends: 113 [2018-07-23 15:34:54,848 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:34:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-23 15:34:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-23 15:34:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-23 15:34:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-23 15:34:54,852 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-07-23 15:34:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:54,852 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-23 15:34:54,852 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:34:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-23 15:34:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 15:34:54,853 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:54,853 INFO L353 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-07-23 15:34:54,853 INFO L414 AbstractCegarLoop]: === Iteration 110 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash 751830726, now seen corresponding path program 109 times [2018-07-23 15:34:54,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:55,185 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:55,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:34:55,185 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:34:55,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:34:55,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:34:55,187 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-07-23 15:34:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:55,353 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-23 15:34:55,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-23 15:34:55,354 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-07-23 15:34:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:55,354 INFO L225 Difference]: With dead ends: 116 [2018-07-23 15:34:55,354 INFO L226 Difference]: Without dead ends: 114 [2018-07-23 15:34:55,356 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:34:55,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-23 15:34:55,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-23 15:34:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-23 15:34:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-23 15:34:55,359 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-07-23 15:34:55,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:55,360 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-23 15:34:55,360 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:34:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-23 15:34:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-23 15:34:55,361 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:55,361 INFO L353 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-07-23 15:34:55,361 INFO L414 AbstractCegarLoop]: === Iteration 111 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:55,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914080, now seen corresponding path program 110 times [2018-07-23 15:34:55,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:55,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:55,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:34:55,757 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:34:55,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:34:55,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:34:55,759 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-07-23 15:34:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:55,836 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-23 15:34:55,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:34:55,836 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-07-23 15:34:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:55,837 INFO L225 Difference]: With dead ends: 117 [2018-07-23 15:34:55,837 INFO L226 Difference]: Without dead ends: 115 [2018-07-23 15:34:55,839 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:34:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-23 15:34:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-23 15:34:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-23 15:34:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-23 15:34:55,842 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-07-23 15:34:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:55,842 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-23 15:34:55,843 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:34:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-23 15:34:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 15:34:55,843 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:55,843 INFO L353 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-07-23 15:34:55,844 INFO L414 AbstractCegarLoop]: === Iteration 112 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash 954759686, now seen corresponding path program 111 times [2018-07-23 15:34:55,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:56,361 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:56,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-23 15:34:56,362 INFO L450 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-23 15:34:56,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-23 15:34:56,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:34:56,364 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-07-23 15:34:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:56,503 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-23 15:34:56,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-23 15:34:56,503 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-07-23 15:34:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:56,504 INFO L225 Difference]: With dead ends: 118 [2018-07-23 15:34:56,504 INFO L226 Difference]: Without dead ends: 116 [2018-07-23 15:34:56,505 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:34:56,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-23 15:34:56,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-23 15:34:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-23 15:34:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-23 15:34:56,507 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-07-23 15:34:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:56,508 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-23 15:34:56,508 INFO L472 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-23 15:34:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-23 15:34:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-23 15:34:56,508 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:56,508 INFO L353 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-07-23 15:34:56,508 INFO L414 AbstractCegarLoop]: === Iteration 113 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:56,509 INFO L82 PathProgramCache]: Analyzing trace with hash -467222752, now seen corresponding path program 112 times [2018-07-23 15:34:56,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:56,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:56,855 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:34:56,855 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:34:56,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:34:56,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:34:56,856 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-07-23 15:34:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:56,952 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-23 15:34:56,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:34:56,953 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-07-23 15:34:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:56,953 INFO L225 Difference]: With dead ends: 119 [2018-07-23 15:34:56,953 INFO L226 Difference]: Without dead ends: 117 [2018-07-23 15:34:56,954 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:34:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-23 15:34:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-23 15:34:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-23 15:34:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-23 15:34:56,957 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-07-23 15:34:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:56,958 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-23 15:34:56,958 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:34:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-23 15:34:56,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 15:34:56,959 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:56,959 INFO L353 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-07-23 15:34:56,959 INFO L414 AbstractCegarLoop]: === Iteration 114 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:56,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005370, now seen corresponding path program 113 times [2018-07-23 15:34:56,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:57,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:57,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:34:57,305 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:34:57,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:34:57,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:34:57,307 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-07-23 15:34:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:57,416 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-23 15:34:57,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-23 15:34:57,416 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-07-23 15:34:57,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:57,417 INFO L225 Difference]: With dead ends: 120 [2018-07-23 15:34:57,417 INFO L226 Difference]: Without dead ends: 118 [2018-07-23 15:34:57,419 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:34:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-23 15:34:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-23 15:34:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-23 15:34:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-23 15:34:57,422 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-07-23 15:34:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:57,422 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-23 15:34:57,422 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:34:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-23 15:34:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-23 15:34:57,422 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:57,423 INFO L353 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-07-23 15:34:57,423 INFO L414 AbstractCegarLoop]: === Iteration 115 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:57,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439136, now seen corresponding path program 114 times [2018-07-23 15:34:57,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:57,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:57,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:34:57,733 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:34:57,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:34:57,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:34:57,734 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-07-23 15:34:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:57,822 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-23 15:34:57,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:34:57,822 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-07-23 15:34:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:57,823 INFO L225 Difference]: With dead ends: 121 [2018-07-23 15:34:57,823 INFO L226 Difference]: Without dead ends: 119 [2018-07-23 15:34:57,824 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:34:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-23 15:34:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-23 15:34:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-23 15:34:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-23 15:34:57,827 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-07-23 15:34:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:57,827 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-23 15:34:57,827 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:34:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-23 15:34:57,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 15:34:57,828 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:57,828 INFO L353 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-07-23 15:34:57,828 INFO L414 AbstractCegarLoop]: === Iteration 116 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:57,828 INFO L82 PathProgramCache]: Analyzing trace with hash 954069126, now seen corresponding path program 115 times [2018-07-23 15:34:57,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:58,284 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:58,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-23 15:34:58,284 INFO L450 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-23 15:34:58,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-23 15:34:58,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:34:58,285 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-07-23 15:34:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:58,426 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-23 15:34:58,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-23 15:34:58,427 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-07-23 15:34:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:58,427 INFO L225 Difference]: With dead ends: 122 [2018-07-23 15:34:58,427 INFO L226 Difference]: Without dead ends: 120 [2018-07-23 15:34:58,428 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:34:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-23 15:34:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-23 15:34:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-23 15:34:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-23 15:34:58,430 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-07-23 15:34:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:58,431 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-23 15:34:58,431 INFO L472 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-23 15:34:58,431 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-23 15:34:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-23 15:34:58,431 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:58,431 INFO L353 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-07-23 15:34:58,431 INFO L414 AbstractCegarLoop]: === Iteration 117 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:58,432 INFO L82 PathProgramCache]: Analyzing trace with hash -488630112, now seen corresponding path program 116 times [2018-07-23 15:34:58,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:58,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:58,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-23 15:34:58,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:34:58,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:34:58,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:34:58,753 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-07-23 15:34:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:58,885 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-23 15:34:58,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-23 15:34:58,885 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-07-23 15:34:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:58,885 INFO L225 Difference]: With dead ends: 123 [2018-07-23 15:34:58,885 INFO L226 Difference]: Without dead ends: 121 [2018-07-23 15:34:58,886 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:34:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-23 15:34:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-23 15:34:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-23 15:34:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-23 15:34:58,888 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-07-23 15:34:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:58,889 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-23 15:34:58,889 INFO L472 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-23 15:34:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-23 15:34:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 15:34:58,889 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:58,889 INFO L353 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-07-23 15:34:58,889 INFO L414 AbstractCegarLoop]: === Iteration 118 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333766, now seen corresponding path program 117 times [2018-07-23 15:34:58,890 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:59,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:59,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-23 15:34:59,209 INFO L450 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-23 15:34:59,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-23 15:34:59,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:34:59,211 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-07-23 15:34:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:59,328 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-23 15:34:59,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-23 15:34:59,328 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-07-23 15:34:59,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:59,329 INFO L225 Difference]: With dead ends: 124 [2018-07-23 15:34:59,329 INFO L226 Difference]: Without dead ends: 122 [2018-07-23 15:34:59,330 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:34:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-23 15:34:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-23 15:34:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-23 15:34:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-23 15:34:59,333 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-07-23 15:34:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:59,333 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-23 15:34:59,334 INFO L472 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-23 15:34:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-23 15:34:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-23 15:34:59,334 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:59,334 INFO L353 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-07-23 15:34:59,335 INFO L414 AbstractCegarLoop]: === Iteration 119 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:59,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164640, now seen corresponding path program 118 times [2018-07-23 15:34:59,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:34:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:34:59,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:34:59,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-23 15:34:59,659 INFO L450 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-23 15:34:59,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-23 15:34:59,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:34:59,661 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-07-23 15:34:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:34:59,769 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-23 15:34:59,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-23 15:34:59,769 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-07-23 15:34:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:34:59,770 INFO L225 Difference]: With dead ends: 125 [2018-07-23 15:34:59,770 INFO L226 Difference]: Without dead ends: 123 [2018-07-23 15:34:59,771 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:34:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-23 15:34:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-23 15:34:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-23 15:34:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-23 15:34:59,773 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-07-23 15:34:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:34:59,773 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-23 15:34:59,773 INFO L472 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-23 15:34:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-23 15:34:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 15:34:59,774 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:34:59,774 INFO L353 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-07-23 15:34:59,774 INFO L414 AbstractCegarLoop]: === Iteration 120 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:34:59,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432826, now seen corresponding path program 119 times [2018-07-23 15:34:59,774 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:34:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:00,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:00,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-23 15:35:00,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-23 15:35:00,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-23 15:35:00,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:35:00,350 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-07-23 15:35:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:00,417 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-23 15:35:00,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-23 15:35:00,418 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-07-23 15:35:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:00,418 INFO L225 Difference]: With dead ends: 126 [2018-07-23 15:35:00,418 INFO L226 Difference]: Without dead ends: 124 [2018-07-23 15:35:00,420 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:35:00,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-23 15:35:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-23 15:35:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-23 15:35:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-23 15:35:00,423 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-07-23 15:35:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:00,423 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-23 15:35:00,423 INFO L472 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-23 15:35:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-23 15:35:00,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-23 15:35:00,424 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:00,424 INFO L353 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-07-23 15:35:00,424 INFO L414 AbstractCegarLoop]: === Iteration 121 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:00,424 INFO L82 PathProgramCache]: Analyzing trace with hash -900681184, now seen corresponding path program 120 times [2018-07-23 15:35:00,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:01,072 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:01,072 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-23 15:35:01,072 INFO L450 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-23 15:35:01,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-23 15:35:01,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:35:01,074 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-07-23 15:35:01,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:01,230 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-23 15:35:01,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-23 15:35:01,231 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-07-23 15:35:01,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:01,231 INFO L225 Difference]: With dead ends: 127 [2018-07-23 15:35:01,231 INFO L226 Difference]: Without dead ends: 125 [2018-07-23 15:35:01,232 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:35:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-23 15:35:01,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-23 15:35:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-23 15:35:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-23 15:35:01,235 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-07-23 15:35:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:01,235 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-23 15:35:01,235 INFO L472 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-23 15:35:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-23 15:35:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-23 15:35:01,236 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:01,236 INFO L353 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-07-23 15:35:01,236 INFO L414 AbstractCegarLoop]: === Iteration 122 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:01,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652422, now seen corresponding path program 121 times [2018-07-23 15:35:01,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:01,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:01,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-23 15:35:01,618 INFO L450 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-23 15:35:01,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-23 15:35:01,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:35:01,620 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-07-23 15:35:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:01,777 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-23 15:35:01,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-23 15:35:01,777 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-07-23 15:35:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:01,778 INFO L225 Difference]: With dead ends: 128 [2018-07-23 15:35:01,778 INFO L226 Difference]: Without dead ends: 126 [2018-07-23 15:35:01,779 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:35:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-23 15:35:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-23 15:35:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-23 15:35:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-23 15:35:01,783 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-07-23 15:35:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:01,783 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-23 15:35:01,783 INFO L472 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-23 15:35:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-23 15:35:01,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-23 15:35:01,784 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:01,784 INFO L353 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-07-23 15:35:01,784 INFO L414 AbstractCegarLoop]: === Iteration 123 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:01,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713696, now seen corresponding path program 122 times [2018-07-23 15:35:01,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:02,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:02,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-23 15:35:02,408 INFO L450 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-23 15:35:02,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-23 15:35:02,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:35:02,411 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-07-23 15:35:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:02,589 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-23 15:35:02,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-23 15:35:02,589 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-07-23 15:35:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:02,590 INFO L225 Difference]: With dead ends: 129 [2018-07-23 15:35:02,590 INFO L226 Difference]: Without dead ends: 127 [2018-07-23 15:35:02,591 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:35:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-23 15:35:02,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-23 15:35:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-23 15:35:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-23 15:35:02,594 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-07-23 15:35:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:02,595 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-23 15:35:02,595 INFO L472 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-23 15:35:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-23 15:35:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 15:35:02,595 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:02,596 INFO L353 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-07-23 15:35:02,596 INFO L414 AbstractCegarLoop]: === Iteration 124 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:02,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386810, now seen corresponding path program 123 times [2018-07-23 15:35:02,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:03,142 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:03,142 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-23 15:35:03,142 INFO L450 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-23 15:35:03,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-23 15:35:03,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:35:03,144 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-07-23 15:35:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:03,263 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-23 15:35:03,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-23 15:35:03,263 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-07-23 15:35:03,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:03,264 INFO L225 Difference]: With dead ends: 130 [2018-07-23 15:35:03,264 INFO L226 Difference]: Without dead ends: 128 [2018-07-23 15:35:03,265 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:35:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-23 15:35:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-23 15:35:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-23 15:35:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-23 15:35:03,268 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-07-23 15:35:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:03,268 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-23 15:35:03,268 INFO L472 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-23 15:35:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-23 15:35:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-23 15:35:03,269 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:03,269 INFO L353 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-07-23 15:35:03,269 INFO L414 AbstractCegarLoop]: === Iteration 125 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:03,270 INFO L82 PathProgramCache]: Analyzing trace with hash -321352800, now seen corresponding path program 124 times [2018-07-23 15:35:03,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:03,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:03,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-23 15:35:03,650 INFO L450 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-23 15:35:03,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-23 15:35:03,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:35:03,652 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-07-23 15:35:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:03,825 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-23 15:35:03,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-23 15:35:03,825 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-07-23 15:35:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:03,826 INFO L225 Difference]: With dead ends: 131 [2018-07-23 15:35:03,826 INFO L226 Difference]: Without dead ends: 129 [2018-07-23 15:35:03,827 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:35:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-23 15:35:03,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-23 15:35:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-23 15:35:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-23 15:35:03,830 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-07-23 15:35:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:03,830 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-23 15:35:03,831 INFO L472 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-23 15:35:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-23 15:35:03,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 15:35:03,831 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:03,831 INFO L353 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-07-23 15:35:03,832 INFO L414 AbstractCegarLoop]: === Iteration 126 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:03,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004154, now seen corresponding path program 125 times [2018-07-23 15:35:03,832 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:04,358 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:04,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-23 15:35:04,358 INFO L450 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-23 15:35:04,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-23 15:35:04,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:35:04,360 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-07-23 15:35:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:04,452 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-23 15:35:04,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-23 15:35:04,452 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-07-23 15:35:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:04,453 INFO L225 Difference]: With dead ends: 132 [2018-07-23 15:35:04,453 INFO L226 Difference]: Without dead ends: 130 [2018-07-23 15:35:04,453 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:35:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-23 15:35:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-23 15:35:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-23 15:35:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-23 15:35:04,456 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-07-23 15:35:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:04,457 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-23 15:35:04,457 INFO L472 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-23 15:35:04,457 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-23 15:35:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-23 15:35:04,457 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:04,458 INFO L353 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-07-23 15:35:04,458 INFO L414 AbstractCegarLoop]: === Iteration 127 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:04,458 INFO L82 PathProgramCache]: Analyzing trace with hash 417542240, now seen corresponding path program 126 times [2018-07-23 15:35:04,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:04,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:04,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-23 15:35:04,834 INFO L450 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-23 15:35:04,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-23 15:35:04,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:35:04,836 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-07-23 15:35:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:05,019 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-23 15:35:05,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-23 15:35:05,019 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-07-23 15:35:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:05,020 INFO L225 Difference]: With dead ends: 133 [2018-07-23 15:35:05,020 INFO L226 Difference]: Without dead ends: 131 [2018-07-23 15:35:05,021 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:35:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-23 15:35:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-23 15:35:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-23 15:35:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-23 15:35:05,024 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-07-23 15:35:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:05,025 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-23 15:35:05,025 INFO L472 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-23 15:35:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-23 15:35:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 15:35:05,025 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:05,026 INFO L353 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-07-23 15:35:05,026 INFO L414 AbstractCegarLoop]: === Iteration 128 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:05,026 INFO L82 PathProgramCache]: Analyzing trace with hash 58905606, now seen corresponding path program 127 times [2018-07-23 15:35:05,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:05,462 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:05,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-23 15:35:05,462 INFO L450 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-23 15:35:05,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-23 15:35:05,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:35:05,466 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-07-23 15:35:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:05,534 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-23 15:35:05,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-23 15:35:05,535 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-07-23 15:35:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:05,535 INFO L225 Difference]: With dead ends: 134 [2018-07-23 15:35:05,536 INFO L226 Difference]: Without dead ends: 132 [2018-07-23 15:35:05,537 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:35:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-23 15:35:05,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-23 15:35:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-23 15:35:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-23 15:35:05,541 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-07-23 15:35:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:05,541 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-23 15:35:05,541 INFO L472 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-23 15:35:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-23 15:35:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-23 15:35:05,542 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:05,542 INFO L353 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-07-23 15:35:05,542 INFO L414 AbstractCegarLoop]: === Iteration 129 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:05,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071840, now seen corresponding path program 128 times [2018-07-23 15:35:05,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:06,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:06,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-23 15:35:06,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-23 15:35:06,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-23 15:35:06,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:35:06,061 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-07-23 15:35:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:06,216 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-23 15:35:06,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-23 15:35:06,216 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-07-23 15:35:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:06,216 INFO L225 Difference]: With dead ends: 135 [2018-07-23 15:35:06,217 INFO L226 Difference]: Without dead ends: 133 [2018-07-23 15:35:06,218 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:35:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-23 15:35:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-23 15:35:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-23 15:35:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-23 15:35:06,220 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-07-23 15:35:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:06,221 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-23 15:35:06,221 INFO L472 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-23 15:35:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-23 15:35:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 15:35:06,221 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:06,221 INFO L353 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-07-23 15:35:06,221 INFO L414 AbstractCegarLoop]: === Iteration 130 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:06,222 INFO L82 PathProgramCache]: Analyzing trace with hash 773650246, now seen corresponding path program 129 times [2018-07-23 15:35:06,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:06,614 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:06,614 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-23 15:35:06,614 INFO L450 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-23 15:35:06,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-23 15:35:06,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:35:06,616 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-07-23 15:35:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:06,791 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-23 15:35:06,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-23 15:35:06,791 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-07-23 15:35:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:06,791 INFO L225 Difference]: With dead ends: 136 [2018-07-23 15:35:06,791 INFO L226 Difference]: Without dead ends: 134 [2018-07-23 15:35:06,792 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:35:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-23 15:35:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-23 15:35:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-23 15:35:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-23 15:35:06,795 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-07-23 15:35:06,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:06,796 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-23 15:35:06,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-23 15:35:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-23 15:35:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-23 15:35:06,796 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:06,796 INFO L353 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-07-23 15:35:06,797 INFO L414 AbstractCegarLoop]: === Iteration 131 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:06,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648096, now seen corresponding path program 130 times [2018-07-23 15:35:06,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:07,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:07,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-23 15:35:07,245 INFO L450 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-23 15:35:07,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-23 15:35:07,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:35:07,247 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-07-23 15:35:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:07,417 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-23 15:35:07,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-23 15:35:07,417 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-07-23 15:35:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:07,418 INFO L225 Difference]: With dead ends: 137 [2018-07-23 15:35:07,418 INFO L226 Difference]: Without dead ends: 135 [2018-07-23 15:35:07,419 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:35:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-23 15:35:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-23 15:35:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-23 15:35:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-23 15:35:07,422 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-07-23 15:35:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:07,422 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-23 15:35:07,422 INFO L472 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-23 15:35:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-23 15:35:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 15:35:07,422 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:07,422 INFO L353 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-07-23 15:35:07,422 INFO L414 AbstractCegarLoop]: === Iteration 132 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash 448481926, now seen corresponding path program 131 times [2018-07-23 15:35:07,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:07,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:07,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-23 15:35:07,886 INFO L450 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-23 15:35:07,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-23 15:35:07,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:35:07,889 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-07-23 15:35:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:08,096 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-23 15:35:08,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-23 15:35:08,096 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-07-23 15:35:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:08,097 INFO L225 Difference]: With dead ends: 138 [2018-07-23 15:35:08,097 INFO L226 Difference]: Without dead ends: 136 [2018-07-23 15:35:08,098 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:35:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-23 15:35:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-23 15:35:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-23 15:35:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-23 15:35:08,100 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-07-23 15:35:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:08,100 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-23 15:35:08,100 INFO L472 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-23 15:35:08,100 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-23 15:35:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-23 15:35:08,100 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:08,100 INFO L353 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-07-23 15:35:08,101 INFO L414 AbstractCegarLoop]: === Iteration 133 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:08,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035872, now seen corresponding path program 132 times [2018-07-23 15:35:08,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:08,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:08,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-23 15:35:08,539 INFO L450 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-23 15:35:08,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-23 15:35:08,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:35:08,541 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-07-23 15:35:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:08,678 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-23 15:35:08,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-23 15:35:08,679 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-07-23 15:35:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:08,679 INFO L225 Difference]: With dead ends: 139 [2018-07-23 15:35:08,679 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:35:08,680 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:35:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:35:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-23 15:35:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-23 15:35:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-23 15:35:08,682 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-07-23 15:35:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:08,683 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-23 15:35:08,683 INFO L472 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-23 15:35:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-23 15:35:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 15:35:08,683 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:08,684 INFO L353 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-07-23 15:35:08,684 INFO L414 AbstractCegarLoop]: === Iteration 134 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339014, now seen corresponding path program 133 times [2018-07-23 15:35:08,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:09,100 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:09,100 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-23 15:35:09,101 INFO L450 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-23 15:35:09,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-23 15:35:09,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:35:09,104 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-07-23 15:35:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:09,274 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-23 15:35:09,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-23 15:35:09,275 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-07-23 15:35:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:09,275 INFO L225 Difference]: With dead ends: 140 [2018-07-23 15:35:09,275 INFO L226 Difference]: Without dead ends: 138 [2018-07-23 15:35:09,276 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:35:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-23 15:35:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-23 15:35:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-23 15:35:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-23 15:35:09,279 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-07-23 15:35:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:09,279 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-23 15:35:09,279 INFO L472 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-23 15:35:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-23 15:35:09,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-23 15:35:09,280 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:09,280 INFO L353 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-07-23 15:35:09,280 INFO L414 AbstractCegarLoop]: === Iteration 135 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:09,280 INFO L82 PathProgramCache]: Analyzing trace with hash -920132768, now seen corresponding path program 134 times [2018-07-23 15:35:09,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:09,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:09,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-23 15:35:09,765 INFO L450 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-23 15:35:09,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-23 15:35:09,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:35:09,768 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-07-23 15:35:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:09,960 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-23 15:35:09,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-23 15:35:09,960 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-07-23 15:35:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:09,961 INFO L225 Difference]: With dead ends: 141 [2018-07-23 15:35:09,961 INFO L226 Difference]: Without dead ends: 139 [2018-07-23 15:35:09,962 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:35:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-23 15:35:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-23 15:35:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-23 15:35:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-23 15:35:09,966 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-07-23 15:35:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:09,966 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-23 15:35:09,966 INFO L472 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-23 15:35:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-23 15:35:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 15:35:09,967 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:09,967 INFO L353 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-07-23 15:35:09,968 INFO L414 AbstractCegarLoop]: === Iteration 136 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:09,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653318, now seen corresponding path program 135 times [2018-07-23 15:35:09,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:10,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:10,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-23 15:35:10,543 INFO L450 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-23 15:35:10,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-23 15:35:10,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:35:10,545 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-07-23 15:35:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:10,750 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-23 15:35:10,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-23 15:35:10,750 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-07-23 15:35:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:10,751 INFO L225 Difference]: With dead ends: 142 [2018-07-23 15:35:10,751 INFO L226 Difference]: Without dead ends: 140 [2018-07-23 15:35:10,751 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:35:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-23 15:35:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-23 15:35:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-23 15:35:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-23 15:35:10,754 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-07-23 15:35:10,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:10,755 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-23 15:35:10,755 INFO L472 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-23 15:35:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-23 15:35:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-23 15:35:10,755 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:10,756 INFO L353 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-07-23 15:35:10,756 INFO L414 AbstractCegarLoop]: === Iteration 137 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash 515610656, now seen corresponding path program 136 times [2018-07-23 15:35:10,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:11,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:11,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-23 15:35:11,209 INFO L450 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-23 15:35:11,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-23 15:35:11,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:35:11,212 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-07-23 15:35:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:11,297 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-23 15:35:11,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-23 15:35:11,297 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-07-23 15:35:11,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:11,297 INFO L225 Difference]: With dead ends: 143 [2018-07-23 15:35:11,297 INFO L226 Difference]: Without dead ends: 141 [2018-07-23 15:35:11,298 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:35:11,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-23 15:35:11,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-23 15:35:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-23 15:35:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-23 15:35:11,300 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-07-23 15:35:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:11,301 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-23 15:35:11,301 INFO L472 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-23 15:35:11,301 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-23 15:35:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 15:35:11,301 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:11,301 INFO L353 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-07-23 15:35:11,301 INFO L414 AbstractCegarLoop]: === Iteration 138 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:11,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940794, now seen corresponding path program 137 times [2018-07-23 15:35:11,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:11,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:11,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-23 15:35:11,731 INFO L450 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-23 15:35:11,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-23 15:35:11,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:35:11,734 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-07-23 15:35:11,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:11,967 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-23 15:35:11,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-23 15:35:11,968 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-07-23 15:35:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:11,968 INFO L225 Difference]: With dead ends: 144 [2018-07-23 15:35:11,968 INFO L226 Difference]: Without dead ends: 142 [2018-07-23 15:35:11,969 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:35:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-23 15:35:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-23 15:35:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-23 15:35:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-23 15:35:11,971 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-07-23 15:35:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:11,972 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-23 15:35:11,972 INFO L472 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-23 15:35:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-23 15:35:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-23 15:35:11,973 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:11,973 INFO L353 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-07-23 15:35:11,973 INFO L414 AbstractCegarLoop]: === Iteration 139 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:11,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539104, now seen corresponding path program 138 times [2018-07-23 15:35:11,973 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:12,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:12,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-23 15:35:12,475 INFO L450 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-23 15:35:12,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-23 15:35:12,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:35:12,477 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-07-23 15:35:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:12,690 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-23 15:35:12,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-23 15:35:12,690 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-07-23 15:35:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:12,690 INFO L225 Difference]: With dead ends: 145 [2018-07-23 15:35:12,691 INFO L226 Difference]: Without dead ends: 143 [2018-07-23 15:35:12,692 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:35:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-23 15:35:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-23 15:35:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-23 15:35:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-23 15:35:12,694 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-07-23 15:35:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:12,694 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-23 15:35:12,694 INFO L472 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-23 15:35:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-23 15:35:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-23 15:35:12,694 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:12,695 INFO L353 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-07-23 15:35:12,695 INFO L414 AbstractCegarLoop]: === Iteration 140 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:12,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070022, now seen corresponding path program 139 times [2018-07-23 15:35:12,695 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:13,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:13,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-23 15:35:13,178 INFO L450 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-23 15:35:13,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-23 15:35:13,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:35:13,180 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-07-23 15:35:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:13,454 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-23 15:35:13,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-23 15:35:13,454 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-07-23 15:35:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:13,454 INFO L225 Difference]: With dead ends: 146 [2018-07-23 15:35:13,454 INFO L226 Difference]: Without dead ends: 144 [2018-07-23 15:35:13,455 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:35:13,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-23 15:35:13,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-23 15:35:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-23 15:35:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-23 15:35:13,457 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-07-23 15:35:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:13,458 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-23 15:35:13,458 INFO L472 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-23 15:35:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-23 15:35:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-23 15:35:13,458 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:13,458 INFO L353 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-07-23 15:35:13,458 INFO L414 AbstractCegarLoop]: === Iteration 141 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:13,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406112, now seen corresponding path program 140 times [2018-07-23 15:35:13,459 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:13,942 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:13,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-23 15:35:13,942 INFO L450 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-23 15:35:13,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-23 15:35:13,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:35:13,944 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-07-23 15:35:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:14,121 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-23 15:35:14,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-23 15:35:14,121 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-07-23 15:35:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:14,121 INFO L225 Difference]: With dead ends: 147 [2018-07-23 15:35:14,121 INFO L226 Difference]: Without dead ends: 145 [2018-07-23 15:35:14,122 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:35:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-23 15:35:14,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-23 15:35:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-23 15:35:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-23 15:35:14,124 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-07-23 15:35:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:14,124 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-23 15:35:14,124 INFO L472 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-23 15:35:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-23 15:35:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 15:35:14,125 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:14,125 INFO L353 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-07-23 15:35:14,125 INFO L414 AbstractCegarLoop]: === Iteration 142 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash 112048838, now seen corresponding path program 141 times [2018-07-23 15:35:14,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:14,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:14,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-23 15:35:14,629 INFO L450 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-23 15:35:14,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-23 15:35:14,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:35:14,633 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-07-23 15:35:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:14,732 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-23 15:35:14,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-23 15:35:14,732 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-07-23 15:35:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:14,733 INFO L225 Difference]: With dead ends: 148 [2018-07-23 15:35:14,733 INFO L226 Difference]: Without dead ends: 146 [2018-07-23 15:35:14,734 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:35:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-23 15:35:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-23 15:35:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-23 15:35:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-23 15:35:14,737 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-07-23 15:35:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:14,737 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-23 15:35:14,737 INFO L472 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-23 15:35:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-23 15:35:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-23 15:35:14,738 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:14,738 INFO L353 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-07-23 15:35:14,738 INFO L414 AbstractCegarLoop]: === Iteration 143 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:14,738 INFO L82 PathProgramCache]: Analyzing trace with hash -821455264, now seen corresponding path program 142 times [2018-07-23 15:35:14,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:15,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:15,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-23 15:35:15,439 INFO L450 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-23 15:35:15,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-23 15:35:15,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:35:15,441 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-07-23 15:35:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:15,591 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-23 15:35:15,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-23 15:35:15,591 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-07-23 15:35:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:15,592 INFO L225 Difference]: With dead ends: 149 [2018-07-23 15:35:15,592 INFO L226 Difference]: Without dead ends: 147 [2018-07-23 15:35:15,593 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:35:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-23 15:35:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-23 15:35:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-23 15:35:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-23 15:35:15,596 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-07-23 15:35:15,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:15,596 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-23 15:35:15,596 INFO L472 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-23 15:35:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-23 15:35:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 15:35:15,597 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:15,597 INFO L353 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-07-23 15:35:15,597 INFO L414 AbstractCegarLoop]: === Iteration 144 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash 304688646, now seen corresponding path program 143 times [2018-07-23 15:35:15,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:16,121 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:16,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-23 15:35:16,121 INFO L450 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-23 15:35:16,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-23 15:35:16,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:35:16,124 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-07-23 15:35:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:16,415 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-23 15:35:16,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-23 15:35:16,415 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-07-23 15:35:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:16,416 INFO L225 Difference]: With dead ends: 150 [2018-07-23 15:35:16,416 INFO L226 Difference]: Without dead ends: 148 [2018-07-23 15:35:16,417 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:35:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-23 15:35:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-23 15:35:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-23 15:35:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-23 15:35:16,419 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-07-23 15:35:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:16,419 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-23 15:35:16,420 INFO L472 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-23 15:35:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-23 15:35:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-23 15:35:16,420 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:16,420 INFO L353 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-07-23 15:35:16,420 INFO L414 AbstractCegarLoop]: === Iteration 145 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:16,420 INFO L82 PathProgramCache]: Analyzing trace with hash 855411488, now seen corresponding path program 144 times [2018-07-23 15:35:16,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:17,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:17,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-23 15:35:17,067 INFO L450 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-23 15:35:17,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-23 15:35:17,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:35:17,068 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-07-23 15:35:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:17,316 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-23 15:35:17,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-23 15:35:17,316 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-07-23 15:35:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:17,316 INFO L225 Difference]: With dead ends: 151 [2018-07-23 15:35:17,316 INFO L226 Difference]: Without dead ends: 149 [2018-07-23 15:35:17,317 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:35:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-23 15:35:17,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-23 15:35:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-23 15:35:17,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-23 15:35:17,319 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-07-23 15:35:17,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:17,320 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-23 15:35:17,320 INFO L472 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-23 15:35:17,320 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-23 15:35:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 15:35:17,321 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:17,321 INFO L353 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-07-23 15:35:17,321 INFO L414 AbstractCegarLoop]: === Iteration 146 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:17,321 INFO L82 PathProgramCache]: Analyzing trace with hash 747950406, now seen corresponding path program 145 times [2018-07-23 15:35:17,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:17,812 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:17,812 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-23 15:35:17,813 INFO L450 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-23 15:35:17,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-23 15:35:17,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:35:17,815 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-07-23 15:35:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:18,077 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-23 15:35:18,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-23 15:35:18,078 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-07-23 15:35:18,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:18,078 INFO L225 Difference]: With dead ends: 152 [2018-07-23 15:35:18,078 INFO L226 Difference]: Without dead ends: 150 [2018-07-23 15:35:18,079 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:35:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-23 15:35:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-23 15:35:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-23 15:35:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-23 15:35:18,082 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-07-23 15:35:18,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:18,083 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-23 15:35:18,083 INFO L472 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-23 15:35:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-23 15:35:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-23 15:35:18,083 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:18,084 INFO L353 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-07-23 15:35:18,084 INFO L414 AbstractCegarLoop]: === Iteration 147 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:18,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1711624160, now seen corresponding path program 146 times [2018-07-23 15:35:18,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:18,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:18,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-23 15:35:18,762 INFO L450 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-23 15:35:18,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-23 15:35:18,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:35:18,764 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-07-23 15:35:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:19,044 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-23 15:35:19,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-23 15:35:19,044 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-07-23 15:35:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:19,045 INFO L225 Difference]: With dead ends: 153 [2018-07-23 15:35:19,045 INFO L226 Difference]: Without dead ends: 151 [2018-07-23 15:35:19,046 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:35:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-23 15:35:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-23 15:35:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-23 15:35:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-23 15:35:19,050 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-07-23 15:35:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:19,050 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-23 15:35:19,050 INFO L472 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-23 15:35:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-23 15:35:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 15:35:19,051 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:19,051 INFO L353 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-07-23 15:35:19,051 INFO L414 AbstractCegarLoop]: === Iteration 148 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1520739462, now seen corresponding path program 147 times [2018-07-23 15:35:19,051 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:19,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:19,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-23 15:35:19,621 INFO L450 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-23 15:35:19,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-23 15:35:19,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:35:19,624 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-07-23 15:35:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:19,936 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-23 15:35:19,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-23 15:35:19,936 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-07-23 15:35:19,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:19,937 INFO L225 Difference]: With dead ends: 154 [2018-07-23 15:35:19,937 INFO L226 Difference]: Without dead ends: 152 [2018-07-23 15:35:19,939 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:35:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-23 15:35:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-23 15:35:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-23 15:35:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-23 15:35:19,942 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-07-23 15:35:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:19,942 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-23 15:35:19,942 INFO L472 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-23 15:35:19,942 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-23 15:35:19,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-23 15:35:19,943 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:19,943 INFO L353 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-07-23 15:35:19,943 INFO L414 AbstractCegarLoop]: === Iteration 149 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash -101718880, now seen corresponding path program 148 times [2018-07-23 15:35:19,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:20,537 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:20,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-23 15:35:20,537 INFO L450 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-23 15:35:20,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-23 15:35:20,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:35:20,540 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-07-23 15:35:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:20,868 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-23 15:35:20,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-23 15:35:20,868 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-07-23 15:35:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:20,868 INFO L225 Difference]: With dead ends: 155 [2018-07-23 15:35:20,869 INFO L226 Difference]: Without dead ends: 153 [2018-07-23 15:35:20,870 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:35:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-23 15:35:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-23 15:35:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-23 15:35:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-23 15:35:20,873 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-07-23 15:35:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:20,874 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-23 15:35:20,874 INFO L472 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-23 15:35:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-23 15:35:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 15:35:20,874 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:20,875 INFO L353 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-07-23 15:35:20,875 INFO L414 AbstractCegarLoop]: === Iteration 150 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:20,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1141680070, now seen corresponding path program 149 times [2018-07-23 15:35:20,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:21,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:21,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-23 15:35:21,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-23 15:35:21,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-23 15:35:21,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:35:21,491 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-07-23 15:35:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:21,830 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-23 15:35:21,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-23 15:35:21,830 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-07-23 15:35:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:21,831 INFO L225 Difference]: With dead ends: 156 [2018-07-23 15:35:21,831 INFO L226 Difference]: Without dead ends: 154 [2018-07-23 15:35:21,833 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:35:21,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-23 15:35:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-23 15:35:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-23 15:35:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-23 15:35:21,836 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-07-23 15:35:21,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:21,836 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-23 15:35:21,836 INFO L472 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-23 15:35:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-23 15:35:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-23 15:35:21,837 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:21,837 INFO L353 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-07-23 15:35:21,837 INFO L414 AbstractCegarLoop]: === Iteration 151 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:21,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1032341856, now seen corresponding path program 150 times [2018-07-23 15:35:21,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:22,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:22,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-23 15:35:22,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-23 15:35:22,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-23 15:35:22,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:35:22,374 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-07-23 15:35:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:22,718 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-23 15:35:22,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-23 15:35:22,718 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-07-23 15:35:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:22,718 INFO L225 Difference]: With dead ends: 157 [2018-07-23 15:35:22,718 INFO L226 Difference]: Without dead ends: 155 [2018-07-23 15:35:22,719 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:35:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-23 15:35:22,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-23 15:35:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-23 15:35:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-23 15:35:22,721 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-07-23 15:35:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:22,722 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-23 15:35:22,722 INFO L472 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-23 15:35:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-23 15:35:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-23 15:35:22,722 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:22,722 INFO L353 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-07-23 15:35:22,722 INFO L414 AbstractCegarLoop]: === Iteration 152 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:22,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1937824518, now seen corresponding path program 151 times [2018-07-23 15:35:22,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:23,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:23,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-23 15:35:23,258 INFO L450 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-23 15:35:23,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-23 15:35:23,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:35:23,261 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-07-23 15:35:23,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:23,619 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-23 15:35:23,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-23 15:35:23,619 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-07-23 15:35:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:23,620 INFO L225 Difference]: With dead ends: 158 [2018-07-23 15:35:23,620 INFO L226 Difference]: Without dead ends: 156 [2018-07-23 15:35:23,621 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:35:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-23 15:35:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-23 15:35:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-23 15:35:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-23 15:35:23,623 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-07-23 15:35:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:23,623 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-23 15:35:23,623 INFO L472 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-23 15:35:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-23 15:35:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-23 15:35:23,624 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:23,624 INFO L353 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-07-23 15:35:23,624 INFO L414 AbstractCegarLoop]: === Iteration 153 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash -56984032, now seen corresponding path program 152 times [2018-07-23 15:35:23,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:24,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:24,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-23 15:35:24,197 INFO L450 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-23 15:35:24,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-23 15:35:24,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:35:24,200 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-07-23 15:35:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:24,537 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-23 15:35:24,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-23 15:35:24,537 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-07-23 15:35:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:24,537 INFO L225 Difference]: With dead ends: 159 [2018-07-23 15:35:24,537 INFO L226 Difference]: Without dead ends: 157 [2018-07-23 15:35:24,539 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:35:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-23 15:35:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-23 15:35:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-23 15:35:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-23 15:35:24,541 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-07-23 15:35:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:24,542 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-23 15:35:24,542 INFO L472 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-23 15:35:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-23 15:35:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 15:35:24,543 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:24,543 INFO L353 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-07-23 15:35:24,543 INFO L414 AbstractCegarLoop]: === Iteration 154 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:24,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1766506938, now seen corresponding path program 153 times [2018-07-23 15:35:24,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:25,279 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:25,279 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-23 15:35:25,279 INFO L450 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-23 15:35:25,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-23 15:35:25,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:35:25,281 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-07-23 15:35:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:25,598 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-23 15:35:25,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-23 15:35:25,598 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-07-23 15:35:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:25,598 INFO L225 Difference]: With dead ends: 160 [2018-07-23 15:35:25,598 INFO L226 Difference]: Without dead ends: 158 [2018-07-23 15:35:25,599 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:35:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-23 15:35:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-23 15:35:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-23 15:35:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-23 15:35:25,601 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-07-23 15:35:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:25,602 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-23 15:35:25,602 INFO L472 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-23 15:35:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-23 15:35:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-23 15:35:25,603 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:25,603 INFO L353 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-07-23 15:35:25,603 INFO L414 AbstractCegarLoop]: === Iteration 155 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1072857824, now seen corresponding path program 154 times [2018-07-23 15:35:25,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:26,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:26,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-23 15:35:26,209 INFO L450 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-23 15:35:26,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-23 15:35:26,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:35:26,213 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-07-23 15:35:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:26,577 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-23 15:35:26,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-23 15:35:26,577 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-07-23 15:35:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:26,578 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:35:26,578 INFO L226 Difference]: Without dead ends: 159 [2018-07-23 15:35:26,580 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:35:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-23 15:35:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-23 15:35:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-23 15:35:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-23 15:35:26,584 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-07-23 15:35:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:26,584 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-23 15:35:26,584 INFO L472 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-23 15:35:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-23 15:35:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-23 15:35:26,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:26,585 INFO L353 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-07-23 15:35:26,585 INFO L414 AbstractCegarLoop]: === Iteration 156 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:26,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1101147770, now seen corresponding path program 155 times [2018-07-23 15:35:26,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:27,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:27,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-23 15:35:27,238 INFO L450 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-23 15:35:27,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-23 15:35:27,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:35:27,241 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-07-23 15:35:27,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:27,458 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-23 15:35:27,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-23 15:35:27,458 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-07-23 15:35:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:27,458 INFO L225 Difference]: With dead ends: 162 [2018-07-23 15:35:27,458 INFO L226 Difference]: Without dead ends: 160 [2018-07-23 15:35:27,460 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:35:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-23 15:35:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-23 15:35:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-23 15:35:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-23 15:35:27,462 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-07-23 15:35:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:27,462 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-23 15:35:27,462 INFO L472 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-23 15:35:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-23 15:35:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-23 15:35:27,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:27,462 INFO L353 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-07-23 15:35:27,463 INFO L414 AbstractCegarLoop]: === Iteration 157 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:27,463 INFO L82 PathProgramCache]: Analyzing trace with hash 224155552, now seen corresponding path program 156 times [2018-07-23 15:35:27,463 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:28,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:28,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-23 15:35:28,067 INFO L450 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-23 15:35:28,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-23 15:35:28,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:35:28,070 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-07-23 15:35:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:28,197 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-23 15:35:28,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-23 15:35:28,197 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-07-23 15:35:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:28,197 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:35:28,197 INFO L226 Difference]: Without dead ends: 161 [2018-07-23 15:35:28,199 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:35:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-23 15:35:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-23 15:35:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-23 15:35:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-23 15:35:28,201 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-07-23 15:35:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:28,201 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-23 15:35:28,201 INFO L472 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-23 15:35:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-23 15:35:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-23 15:35:28,202 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:28,202 INFO L353 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-07-23 15:35:28,202 INFO L414 AbstractCegarLoop]: === Iteration 158 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:28,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1641114426, now seen corresponding path program 157 times [2018-07-23 15:35:28,202 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:28,938 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:28,938 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-23 15:35:28,938 INFO L450 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-23 15:35:28,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-23 15:35:28,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:35:28,940 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-07-23 15:35:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:29,142 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-23 15:35:29,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-23 15:35:29,143 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-07-23 15:35:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:29,143 INFO L225 Difference]: With dead ends: 164 [2018-07-23 15:35:29,143 INFO L226 Difference]: Without dead ends: 162 [2018-07-23 15:35:29,144 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:35:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-23 15:35:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-23 15:35:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-23 15:35:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-23 15:35:29,146 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-07-23 15:35:29,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:29,146 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-23 15:35:29,146 INFO L472 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-23 15:35:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-23 15:35:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-23 15:35:29,147 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:29,147 INFO L353 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-07-23 15:35:29,147 INFO L414 AbstractCegarLoop]: === Iteration 159 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:29,147 INFO L82 PathProgramCache]: Analyzing trace with hash 665058400, now seen corresponding path program 158 times [2018-07-23 15:35:29,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:29,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:29,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-23 15:35:29,746 INFO L450 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-23 15:35:29,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-23 15:35:29,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:35:29,748 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-07-23 15:35:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:30,166 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-23 15:35:30,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-23 15:35:30,167 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-07-23 15:35:30,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:30,167 INFO L225 Difference]: With dead ends: 165 [2018-07-23 15:35:30,167 INFO L226 Difference]: Without dead ends: 163 [2018-07-23 15:35:30,169 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:35:30,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-23 15:35:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-23 15:35:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-23 15:35:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-23 15:35:30,171 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-07-23 15:35:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:30,171 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-23 15:35:30,171 INFO L472 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-23 15:35:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-23 15:35:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 15:35:30,172 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:30,172 INFO L353 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-07-23 15:35:30,172 INFO L414 AbstractCegarLoop]: === Iteration 160 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:30,173 INFO L82 PathProgramCache]: Analyzing trace with hash -858028026, now seen corresponding path program 159 times [2018-07-23 15:35:30,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:30,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:30,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-23 15:35:30,862 INFO L450 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-23 15:35:30,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-23 15:35:30,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:35:30,865 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-07-23 15:35:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:31,286 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-23 15:35:31,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-23 15:35:31,286 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-07-23 15:35:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:31,286 INFO L225 Difference]: With dead ends: 166 [2018-07-23 15:35:31,287 INFO L226 Difference]: Without dead ends: 164 [2018-07-23 15:35:31,288 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:35:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-23 15:35:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-23 15:35:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-23 15:35:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-23 15:35:31,291 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-07-23 15:35:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:31,292 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-23 15:35:31,292 INFO L472 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-23 15:35:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-23 15:35:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-23 15:35:31,293 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:31,293 INFO L353 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-07-23 15:35:31,293 INFO L414 AbstractCegarLoop]: === Iteration 161 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:31,293 INFO L82 PathProgramCache]: Analyzing trace with hash -829066976, now seen corresponding path program 160 times [2018-07-23 15:35:31,293 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:31,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:31,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-23 15:35:31,962 INFO L450 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-23 15:35:31,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-23 15:35:31,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:35:31,964 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-07-23 15:35:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:32,371 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-23 15:35:32,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-23 15:35:32,371 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-07-23 15:35:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:32,372 INFO L225 Difference]: With dead ends: 167 [2018-07-23 15:35:32,372 INFO L226 Difference]: Without dead ends: 165 [2018-07-23 15:35:32,373 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:35:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-23 15:35:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-23 15:35:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-23 15:35:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-23 15:35:32,376 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-07-23 15:35:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:32,376 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-23 15:35:32,376 INFO L472 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-23 15:35:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-23 15:35:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-23 15:35:32,377 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:32,377 INFO L353 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-07-23 15:35:32,377 INFO L414 AbstractCegarLoop]: === Iteration 162 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash 68725574, now seen corresponding path program 161 times [2018-07-23 15:35:32,377 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:33,210 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:33,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-23 15:35:33,210 INFO L450 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-23 15:35:33,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-23 15:35:33,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:35:33,212 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-07-23 15:35:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:33,353 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-23 15:35:33,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-23 15:35:33,353 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-07-23 15:35:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:33,354 INFO L225 Difference]: With dead ends: 168 [2018-07-23 15:35:33,354 INFO L226 Difference]: Without dead ends: 166 [2018-07-23 15:35:33,355 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:35:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-23 15:35:33,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-23 15:35:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-23 15:35:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-23 15:35:33,358 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-07-23 15:35:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:33,359 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-23 15:35:33,359 INFO L472 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-23 15:35:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-23 15:35:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-23 15:35:33,360 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:33,360 INFO L353 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-07-23 15:35:33,360 INFO L414 AbstractCegarLoop]: === Iteration 163 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2130490848, now seen corresponding path program 162 times [2018-07-23 15:35:33,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:34,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:34,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-23 15:35:34,183 INFO L450 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-23 15:35:34,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-23 15:35:34,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:35:34,187 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-07-23 15:35:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:34,501 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-23 15:35:34,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-23 15:35:34,501 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-07-23 15:35:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:34,501 INFO L225 Difference]: With dead ends: 169 [2018-07-23 15:35:34,501 INFO L226 Difference]: Without dead ends: 167 [2018-07-23 15:35:34,503 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:35:34,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-23 15:35:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-23 15:35:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-23 15:35:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-23 15:35:34,505 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-07-23 15:35:34,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:34,505 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-23 15:35:34,506 INFO L472 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-23 15:35:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-23 15:35:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-23 15:35:34,506 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:34,506 INFO L353 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-07-23 15:35:34,506 INFO L414 AbstractCegarLoop]: === Iteration 164 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:34,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1620704902, now seen corresponding path program 163 times [2018-07-23 15:35:34,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:35,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:35,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-23 15:35:35,153 INFO L450 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-23 15:35:35,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-23 15:35:35,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:35:35,155 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-07-23 15:35:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:35,641 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-23 15:35:35,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-23 15:35:35,641 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-07-23 15:35:35,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:35,641 INFO L225 Difference]: With dead ends: 170 [2018-07-23 15:35:35,642 INFO L226 Difference]: Without dead ends: 168 [2018-07-23 15:35:35,643 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:35:35,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-23 15:35:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-23 15:35:35,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-23 15:35:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-23 15:35:35,645 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-07-23 15:35:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:35,645 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-23 15:35:35,645 INFO L472 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-23 15:35:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-23 15:35:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-23 15:35:35,646 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:35,646 INFO L353 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-07-23 15:35:35,646 INFO L414 AbstractCegarLoop]: === Iteration 165 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1297757536, now seen corresponding path program 164 times [2018-07-23 15:35:35,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:36,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:36,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-23 15:35:36,343 INFO L450 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-23 15:35:36,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-23 15:35:36,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:35:36,347 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-07-23 15:35:36,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:36,718 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-23 15:35:36,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-23 15:35:36,718 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-07-23 15:35:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:36,719 INFO L225 Difference]: With dead ends: 171 [2018-07-23 15:35:36,719 INFO L226 Difference]: Without dead ends: 169 [2018-07-23 15:35:36,721 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:35:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-23 15:35:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-23 15:35:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-23 15:35:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-23 15:35:36,723 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-07-23 15:35:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:36,723 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-23 15:35:36,723 INFO L472 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-23 15:35:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-23 15:35:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-23 15:35:36,724 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:36,724 INFO L353 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-07-23 15:35:36,724 INFO L414 AbstractCegarLoop]: === Iteration 166 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:36,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1575779898, now seen corresponding path program 165 times [2018-07-23 15:35:36,724 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:37,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:37,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-23 15:35:37,421 INFO L450 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-23 15:35:37,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-23 15:35:37,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:35:37,424 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-07-23 15:35:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:37,610 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-23 15:35:37,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-23 15:35:37,610 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-07-23 15:35:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:37,610 INFO L225 Difference]: With dead ends: 172 [2018-07-23 15:35:37,610 INFO L226 Difference]: Without dead ends: 170 [2018-07-23 15:35:37,611 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:35:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-23 15:35:37,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-23 15:35:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-23 15:35:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-23 15:35:37,614 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-07-23 15:35:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:37,615 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-23 15:35:37,615 INFO L472 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-23 15:35:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-23 15:35:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-23 15:35:37,615 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:37,616 INFO L353 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-07-23 15:35:37,616 INFO L414 AbstractCegarLoop]: === Iteration 167 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:37,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1604538528, now seen corresponding path program 166 times [2018-07-23 15:35:37,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:38,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:38,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-23 15:35:38,282 INFO L450 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-23 15:35:38,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-23 15:35:38,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:35:38,285 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-07-23 15:35:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:38,834 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-23 15:35:38,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-23 15:35:38,834 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-07-23 15:35:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:38,835 INFO L225 Difference]: With dead ends: 173 [2018-07-23 15:35:38,835 INFO L226 Difference]: Without dead ends: 171 [2018-07-23 15:35:38,836 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:35:38,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-23 15:35:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-23 15:35:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-23 15:35:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-23 15:35:38,839 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-07-23 15:35:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:38,839 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-23 15:35:38,839 INFO L472 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-23 15:35:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-23 15:35:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-23 15:35:38,840 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:38,840 INFO L353 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-07-23 15:35:38,840 INFO L414 AbstractCegarLoop]: === Iteration 168 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:38,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1798911238, now seen corresponding path program 167 times [2018-07-23 15:35:38,840 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:39,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:39,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-23 15:35:39,588 INFO L450 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-23 15:35:39,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-23 15:35:39,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:35:39,591 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-07-23 15:35:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:39,987 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-23 15:35:39,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-23 15:35:39,987 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-07-23 15:35:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:39,988 INFO L225 Difference]: With dead ends: 174 [2018-07-23 15:35:39,988 INFO L226 Difference]: Without dead ends: 172 [2018-07-23 15:35:39,989 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:35:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-23 15:35:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-23 15:35:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-23 15:35:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-23 15:35:39,992 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-07-23 15:35:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:39,992 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-23 15:35:39,992 INFO L472 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-23 15:35:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-23 15:35:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-23 15:35:39,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:39,993 INFO L353 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-07-23 15:35:39,993 INFO L414 AbstractCegarLoop]: === Iteration 169 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash -68328416, now seen corresponding path program 168 times [2018-07-23 15:35:39,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:40,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:40,705 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-23 15:35:40,705 INFO L450 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-23 15:35:40,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-23 15:35:40,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:35:40,708 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-07-23 15:35:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:40,953 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-23 15:35:40,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-23 15:35:40,953 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-07-23 15:35:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:40,953 INFO L225 Difference]: With dead ends: 175 [2018-07-23 15:35:40,953 INFO L226 Difference]: Without dead ends: 173 [2018-07-23 15:35:40,955 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:35:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-23 15:35:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-23 15:35:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-23 15:35:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-23 15:35:40,957 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-07-23 15:35:40,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:40,957 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-23 15:35:40,957 INFO L472 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-23 15:35:40,957 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-23 15:35:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 15:35:40,958 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:40,958 INFO L353 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-07-23 15:35:40,958 INFO L414 AbstractCegarLoop]: === Iteration 170 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:40,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182842, now seen corresponding path program 169 times [2018-07-23 15:35:40,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:41,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:41,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-23 15:35:41,683 INFO L450 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-23 15:35:41,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-23 15:35:41,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:35:41,687 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-07-23 15:35:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:42,264 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-23 15:35:42,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-23 15:35:42,265 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-07-23 15:35:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:42,265 INFO L225 Difference]: With dead ends: 176 [2018-07-23 15:35:42,265 INFO L226 Difference]: Without dead ends: 174 [2018-07-23 15:35:42,267 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:35:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-23 15:35:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-23 15:35:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-23 15:35:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-23 15:35:42,269 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-07-23 15:35:42,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:42,269 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-23 15:35:42,269 INFO L472 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-23 15:35:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-23 15:35:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-23 15:35:42,270 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:42,270 INFO L353 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-07-23 15:35:42,270 INFO L414 AbstractCegarLoop]: === Iteration 171 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:42,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1239160608, now seen corresponding path program 170 times [2018-07-23 15:35:42,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:42,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:42,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-23 15:35:42,981 INFO L450 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-23 15:35:42,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-23 15:35:42,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:35:42,985 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-07-23 15:35:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:43,179 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-23 15:35:43,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-23 15:35:43,179 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-07-23 15:35:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:43,180 INFO L225 Difference]: With dead ends: 177 [2018-07-23 15:35:43,180 INFO L226 Difference]: Without dead ends: 175 [2018-07-23 15:35:43,183 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:35:43,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-23 15:35:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-23 15:35:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-23 15:35:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-23 15:35:43,185 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-07-23 15:35:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:43,186 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-23 15:35:43,186 INFO L472 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-23 15:35:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-23 15:35:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-23 15:35:43,187 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:43,187 INFO L353 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-07-23 15:35:43,187 INFO L414 AbstractCegarLoop]: === Iteration 172 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:43,187 INFO L82 PathProgramCache]: Analyzing trace with hash 240724870, now seen corresponding path program 171 times [2018-07-23 15:35:43,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:43,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:43,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-23 15:35:43,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-23 15:35:43,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-23 15:35:43,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:35:43,974 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-07-23 15:35:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:44,577 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-23 15:35:44,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-23 15:35:44,577 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-07-23 15:35:44,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:44,578 INFO L225 Difference]: With dead ends: 178 [2018-07-23 15:35:44,578 INFO L226 Difference]: Without dead ends: 176 [2018-07-23 15:35:44,581 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:35:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-23 15:35:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-23 15:35:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-23 15:35:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-23 15:35:44,585 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-07-23 15:35:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:44,585 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-23 15:35:44,585 INFO L472 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-23 15:35:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-23 15:35:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-23 15:35:44,586 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:44,586 INFO L353 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-07-23 15:35:44,586 INFO L414 AbstractCegarLoop]: === Iteration 173 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1127465568, now seen corresponding path program 172 times [2018-07-23 15:35:44,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:45,424 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:45,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-23 15:35:45,424 INFO L450 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-23 15:35:45,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-23 15:35:45,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:35:45,426 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-07-23 15:35:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:45,777 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-23 15:35:45,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-23 15:35:45,777 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-07-23 15:35:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:45,778 INFO L225 Difference]: With dead ends: 179 [2018-07-23 15:35:45,778 INFO L226 Difference]: Without dead ends: 177 [2018-07-23 15:35:45,780 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:35:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-23 15:35:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-23 15:35:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-23 15:35:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-23 15:35:45,784 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-07-23 15:35:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:45,784 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-23 15:35:45,784 INFO L472 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-23 15:35:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-23 15:35:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 15:35:45,785 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:45,785 INFO L353 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-07-23 15:35:45,786 INFO L414 AbstractCegarLoop]: === Iteration 174 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:45,786 INFO L82 PathProgramCache]: Analyzing trace with hash -591696186, now seen corresponding path program 173 times [2018-07-23 15:35:45,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:46,560 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:46,560 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-23 15:35:46,560 INFO L450 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-23 15:35:46,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-23 15:35:46,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:35:46,564 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-07-23 15:35:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:47,048 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-23 15:35:47,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-23 15:35:47,048 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-07-23 15:35:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:47,049 INFO L225 Difference]: With dead ends: 180 [2018-07-23 15:35:47,049 INFO L226 Difference]: Without dead ends: 178 [2018-07-23 15:35:47,053 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:35:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-23 15:35:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-23 15:35:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-23 15:35:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-23 15:35:47,056 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-07-23 15:35:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:47,056 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-23 15:35:47,056 INFO L472 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-23 15:35:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-23 15:35:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-23 15:35:47,057 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:47,057 INFO L353 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-07-23 15:35:47,057 INFO L414 AbstractCegarLoop]: === Iteration 175 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1162714528, now seen corresponding path program 174 times [2018-07-23 15:35:47,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:47,843 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:47,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-23 15:35:47,843 INFO L450 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-23 15:35:47,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-23 15:35:47,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:35:47,847 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-07-23 15:35:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:48,296 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-23 15:35:48,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-23 15:35:48,296 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-07-23 15:35:48,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:48,296 INFO L225 Difference]: With dead ends: 181 [2018-07-23 15:35:48,296 INFO L226 Difference]: Without dead ends: 179 [2018-07-23 15:35:48,298 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:35:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-23 15:35:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-23 15:35:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-23 15:35:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-23 15:35:48,300 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-07-23 15:35:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:48,300 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-23 15:35:48,300 INFO L472 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-23 15:35:48,300 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-23 15:35:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 15:35:48,301 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:48,301 INFO L353 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-07-23 15:35:48,301 INFO L414 AbstractCegarLoop]: === Iteration 176 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:48,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1684413946, now seen corresponding path program 175 times [2018-07-23 15:35:48,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:49,123 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:49,123 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-23 15:35:49,123 INFO L450 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-23 15:35:49,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-23 15:35:49,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:35:49,125 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-07-23 15:35:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:49,571 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-23 15:35:49,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-23 15:35:49,571 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-07-23 15:35:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:49,572 INFO L225 Difference]: With dead ends: 182 [2018-07-23 15:35:49,572 INFO L226 Difference]: Without dead ends: 180 [2018-07-23 15:35:49,573 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:35:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-23 15:35:49,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-23 15:35:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-23 15:35:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-23 15:35:49,575 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-07-23 15:35:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:49,575 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-23 15:35:49,575 INFO L472 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-23 15:35:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-23 15:35:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-23 15:35:49,576 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:49,576 INFO L353 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-07-23 15:35:49,576 INFO L414 AbstractCegarLoop]: === Iteration 177 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:49,576 INFO L82 PathProgramCache]: Analyzing trace with hash -677226720, now seen corresponding path program 176 times [2018-07-23 15:35:49,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:50,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:50,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-23 15:35:50,374 INFO L450 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-23 15:35:50,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-23 15:35:50,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:35:50,377 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-07-23 15:35:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:50,789 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-23 15:35:50,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-23 15:35:50,789 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-07-23 15:35:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:50,789 INFO L225 Difference]: With dead ends: 183 [2018-07-23 15:35:50,789 INFO L226 Difference]: Without dead ends: 181 [2018-07-23 15:35:50,791 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:35:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-23 15:35:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-23 15:35:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-23 15:35:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-23 15:35:50,794 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-07-23 15:35:50,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:50,794 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-23 15:35:50,794 INFO L472 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-23 15:35:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-23 15:35:50,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 15:35:50,795 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:50,795 INFO L353 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-07-23 15:35:50,795 INFO L414 AbstractCegarLoop]: === Iteration 178 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:50,795 INFO L82 PathProgramCache]: Analyzing trace with hash 480806214, now seen corresponding path program 177 times [2018-07-23 15:35:50,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:51,582 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:51,582 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-23 15:35:51,582 INFO L450 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-23 15:35:51,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-23 15:35:51,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:35:51,587 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-07-23 15:35:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:52,195 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-23 15:35:52,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-23 15:35:52,195 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-07-23 15:35:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:52,196 INFO L225 Difference]: With dead ends: 184 [2018-07-23 15:35:52,196 INFO L226 Difference]: Without dead ends: 182 [2018-07-23 15:35:52,197 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:35:52,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-23 15:35:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-23 15:35:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-23 15:35:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-23 15:35:52,200 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-07-23 15:35:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:52,200 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-23 15:35:52,200 INFO L472 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-23 15:35:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-23 15:35:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-23 15:35:52,200 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:52,200 INFO L353 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-07-23 15:35:52,201 INFO L414 AbstractCegarLoop]: === Iteration 179 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:52,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2020088800, now seen corresponding path program 178 times [2018-07-23 15:35:52,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:53,027 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:53,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-23 15:35:53,027 INFO L450 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-23 15:35:53,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-23 15:35:53,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:35:53,032 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-07-23 15:35:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:53,311 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-23 15:35:53,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-23 15:35:53,311 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-07-23 15:35:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:53,312 INFO L225 Difference]: With dead ends: 185 [2018-07-23 15:35:53,312 INFO L226 Difference]: Without dead ends: 183 [2018-07-23 15:35:53,314 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:35:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-23 15:35:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-23 15:35:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-23 15:35:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-23 15:35:53,316 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-07-23 15:35:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:53,316 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-23 15:35:53,317 INFO L472 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-23 15:35:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-23 15:35:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-23 15:35:53,317 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:53,318 INFO L353 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-07-23 15:35:53,318 INFO L414 AbstractCegarLoop]: === Iteration 180 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:53,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1801758586, now seen corresponding path program 179 times [2018-07-23 15:35:53,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:54,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:54,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-23 15:35:54,151 INFO L450 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-23 15:35:54,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-23 15:35:54,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:35:54,155 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-07-23 15:35:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:54,879 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-23 15:35:54,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-23 15:35:54,879 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-07-23 15:35:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:54,880 INFO L225 Difference]: With dead ends: 186 [2018-07-23 15:35:54,880 INFO L226 Difference]: Without dead ends: 184 [2018-07-23 15:35:54,883 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:35:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-23 15:35:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-23 15:35:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-23 15:35:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-23 15:35:54,885 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-07-23 15:35:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:54,886 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-23 15:35:54,886 INFO L472 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-23 15:35:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-23 15:35:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-23 15:35:54,886 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:54,886 INFO L353 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-07-23 15:35:54,886 INFO L414 AbstractCegarLoop]: === Iteration 181 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash -19943264, now seen corresponding path program 180 times [2018-07-23 15:35:54,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:55,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:55,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-23 15:35:55,772 INFO L450 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-23 15:35:55,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-23 15:35:55,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:35:55,776 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-07-23 15:35:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:56,022 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-23 15:35:56,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-23 15:35:56,022 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-07-23 15:35:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:56,023 INFO L225 Difference]: With dead ends: 187 [2018-07-23 15:35:56,023 INFO L226 Difference]: Without dead ends: 185 [2018-07-23 15:35:56,026 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:35:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-23 15:35:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-23 15:35:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-23 15:35:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-23 15:35:56,029 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-07-23 15:35:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:56,030 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-23 15:35:56,030 INFO L472 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-23 15:35:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-23 15:35:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 15:35:56,030 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:56,030 INFO L353 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-07-23 15:35:56,030 INFO L414 AbstractCegarLoop]: === Iteration 182 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:56,030 INFO L82 PathProgramCache]: Analyzing trace with hash -618243130, now seen corresponding path program 181 times [2018-07-23 15:35:56,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:56,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:56,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-23 15:35:56,890 INFO L450 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-23 15:35:56,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-23 15:35:56,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:35:56,894 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-07-23 15:35:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:57,495 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-23 15:35:57,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-23 15:35:57,495 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-07-23 15:35:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:57,495 INFO L225 Difference]: With dead ends: 188 [2018-07-23 15:35:57,495 INFO L226 Difference]: Without dead ends: 186 [2018-07-23 15:35:57,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:35:57,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-23 15:35:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-23 15:35:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-23 15:35:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-23 15:35:57,500 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-07-23 15:35:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:57,500 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-23 15:35:57,500 INFO L472 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-23 15:35:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-23 15:35:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-23 15:35:57,500 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:57,501 INFO L353 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-07-23 15:35:57,501 INFO L414 AbstractCegarLoop]: === Iteration 183 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1985669792, now seen corresponding path program 182 times [2018-07-23 15:35:57,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:58,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:58,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-23 15:35:58,344 INFO L450 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-23 15:35:58,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-23 15:35:58,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:35:58,349 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-07-23 15:35:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:35:59,076 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-23 15:35:59,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-23 15:35:59,076 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-07-23 15:35:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:35:59,077 INFO L225 Difference]: With dead ends: 189 [2018-07-23 15:35:59,077 INFO L226 Difference]: Without dead ends: 187 [2018-07-23 15:35:59,081 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:35:59,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-23 15:35:59,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-23 15:35:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-23 15:35:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-23 15:35:59,085 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-07-23 15:35:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:35:59,085 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-23 15:35:59,085 INFO L472 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-23 15:35:59,085 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-23 15:35:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 15:35:59,086 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:35:59,086 INFO L353 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-07-23 15:35:59,086 INFO L414 AbstractCegarLoop]: === Iteration 184 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:35:59,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1426223354, now seen corresponding path program 183 times [2018-07-23 15:35:59,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:35:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:35:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:35:59,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:35:59,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-23 15:35:59,981 INFO L450 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-23 15:35:59,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-23 15:35:59,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:35:59,985 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-07-23 15:36:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:00,194 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-23 15:36:00,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-23 15:36:00,194 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-07-23 15:36:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:00,195 INFO L225 Difference]: With dead ends: 190 [2018-07-23 15:36:00,195 INFO L226 Difference]: Without dead ends: 188 [2018-07-23 15:36:00,197 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:36:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-23 15:36:00,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-23 15:36:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-23 15:36:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-23 15:36:00,199 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-07-23 15:36:00,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:00,199 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-23 15:36:00,199 INFO L472 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-23 15:36:00,199 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-23 15:36:00,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-23 15:36:00,200 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:00,200 INFO L353 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-07-23 15:36:00,200 INFO L414 AbstractCegarLoop]: === Iteration 185 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:00,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1263252960, now seen corresponding path program 184 times [2018-07-23 15:36:00,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:01,066 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:01,066 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-23 15:36:01,067 INFO L450 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-23 15:36:01,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-23 15:36:01,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:36:01,070 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-07-23 15:36:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:01,774 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-23 15:36:01,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-23 15:36:01,774 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-07-23 15:36:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:01,775 INFO L225 Difference]: With dead ends: 191 [2018-07-23 15:36:01,775 INFO L226 Difference]: Without dead ends: 189 [2018-07-23 15:36:01,777 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:36:01,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-23 15:36:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-23 15:36:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-23 15:36:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-23 15:36:01,780 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-07-23 15:36:01,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:01,780 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-23 15:36:01,780 INFO L472 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-23 15:36:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-23 15:36:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 15:36:01,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:01,781 INFO L353 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-07-23 15:36:01,781 INFO L414 AbstractCegarLoop]: === Iteration 186 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:01,781 INFO L82 PathProgramCache]: Analyzing trace with hash -506138042, now seen corresponding path program 185 times [2018-07-23 15:36:01,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:02,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:02,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-23 15:36:02,695 INFO L450 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-23 15:36:02,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-23 15:36:02,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:36:02,700 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-07-23 15:36:03,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:03,521 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-23 15:36:03,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-23 15:36:03,521 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-07-23 15:36:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:03,522 INFO L225 Difference]: With dead ends: 192 [2018-07-23 15:36:03,522 INFO L226 Difference]: Without dead ends: 190 [2018-07-23 15:36:03,524 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:36:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-23 15:36:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-23 15:36:03,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-23 15:36:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-23 15:36:03,527 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-07-23 15:36:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:03,527 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-23 15:36:03,527 INFO L472 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-23 15:36:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-23 15:36:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-23 15:36:03,528 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:03,528 INFO L353 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-07-23 15:36:03,528 INFO L414 AbstractCegarLoop]: === Iteration 187 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:03,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1489587936, now seen corresponding path program 186 times [2018-07-23 15:36:03,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:04,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:04,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-23 15:36:04,456 INFO L450 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-23 15:36:04,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-23 15:36:04,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:36:04,460 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-07-23 15:36:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:04,778 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-23 15:36:04,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-23 15:36:04,778 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-07-23 15:36:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:04,779 INFO L225 Difference]: With dead ends: 193 [2018-07-23 15:36:04,779 INFO L226 Difference]: Without dead ends: 191 [2018-07-23 15:36:04,781 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:36:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-23 15:36:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-23 15:36:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-23 15:36:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-23 15:36:04,783 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-07-23 15:36:04,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:04,783 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-23 15:36:04,783 INFO L472 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-23 15:36:04,783 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-23 15:36:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-23 15:36:04,784 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:04,784 INFO L353 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-07-23 15:36:04,784 INFO L414 AbstractCegarLoop]: === Iteration 188 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:04,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1067416186, now seen corresponding path program 187 times [2018-07-23 15:36:04,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:05,735 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:05,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-23 15:36:05,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-23 15:36:05,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-23 15:36:05,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:36:05,737 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-07-23 15:36:06,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:06,064 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-23 15:36:06,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-23 15:36:06,064 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-07-23 15:36:06,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:06,065 INFO L225 Difference]: With dead ends: 194 [2018-07-23 15:36:06,065 INFO L226 Difference]: Without dead ends: 192 [2018-07-23 15:36:06,066 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:36:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-23 15:36:06,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-23 15:36:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-23 15:36:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-23 15:36:06,068 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-07-23 15:36:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:06,068 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-23 15:36:06,068 INFO L472 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-23 15:36:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-23 15:36:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-23 15:36:06,069 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:06,069 INFO L353 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-07-23 15:36:06,069 INFO L414 AbstractCegarLoop]: === Iteration 189 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:06,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1269834656, now seen corresponding path program 188 times [2018-07-23 15:36:06,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:06,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:06,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-23 15:36:06,962 INFO L450 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-23 15:36:06,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-23 15:36:06,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:36:06,967 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-07-23 15:36:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:07,764 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-23 15:36:07,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-23 15:36:07,764 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-07-23 15:36:07,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:07,765 INFO L225 Difference]: With dead ends: 195 [2018-07-23 15:36:07,765 INFO L226 Difference]: Without dead ends: 193 [2018-07-23 15:36:07,768 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:36:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-23 15:36:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-23 15:36:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-23 15:36:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-23 15:36:07,771 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-07-23 15:36:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:07,772 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-23 15:36:07,772 INFO L472 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-23 15:36:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-23 15:36:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 15:36:07,773 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:07,773 INFO L353 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-07-23 15:36:07,773 INFO L414 AbstractCegarLoop]: === Iteration 190 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:07,773 INFO L82 PathProgramCache]: Analyzing trace with hash 710166726, now seen corresponding path program 189 times [2018-07-23 15:36:07,773 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:08,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:08,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-23 15:36:08,879 INFO L450 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-23 15:36:08,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-23 15:36:08,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:36:08,883 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-07-23 15:36:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:09,756 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-23 15:36:09,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-23 15:36:09,756 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-07-23 15:36:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:09,756 INFO L225 Difference]: With dead ends: 196 [2018-07-23 15:36:09,756 INFO L226 Difference]: Without dead ends: 194 [2018-07-23 15:36:09,759 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:36:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-23 15:36:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-23 15:36:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-23 15:36:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-23 15:36:09,761 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-07-23 15:36:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:09,762 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-23 15:36:09,762 INFO L472 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-23 15:36:09,762 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-23 15:36:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-23 15:36:09,762 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:09,762 INFO L353 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-07-23 15:36:09,762 INFO L414 AbstractCegarLoop]: === Iteration 191 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:09,763 INFO L82 PathProgramCache]: Analyzing trace with hash 540330080, now seen corresponding path program 190 times [2018-07-23 15:36:09,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:10,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:10,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-23 15:36:10,736 INFO L450 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-23 15:36:10,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-23 15:36:10,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:36:10,739 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-07-23 15:36:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:11,200 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-23 15:36:11,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-23 15:36:11,200 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-07-23 15:36:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:11,201 INFO L225 Difference]: With dead ends: 197 [2018-07-23 15:36:11,201 INFO L226 Difference]: Without dead ends: 195 [2018-07-23 15:36:11,203 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:36:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-23 15:36:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-23 15:36:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-23 15:36:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-23 15:36:11,206 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-07-23 15:36:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:11,206 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-23 15:36:11,206 INFO L472 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-23 15:36:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-23 15:36:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-23 15:36:11,207 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:11,207 INFO L353 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-07-23 15:36:11,207 INFO L414 AbstractCegarLoop]: === Iteration 192 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:11,207 INFO L82 PathProgramCache]: Analyzing trace with hash -429638650, now seen corresponding path program 191 times [2018-07-23 15:36:11,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:12,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:12,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-23 15:36:12,126 INFO L450 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-23 15:36:12,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-23 15:36:12,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:36:12,132 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-07-23 15:36:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:12,376 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-23 15:36:12,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-23 15:36:12,376 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-07-23 15:36:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:12,377 INFO L225 Difference]: With dead ends: 198 [2018-07-23 15:36:12,377 INFO L226 Difference]: Without dead ends: 196 [2018-07-23 15:36:12,379 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:36:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-23 15:36:12,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-23 15:36:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-23 15:36:12,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-23 15:36:12,382 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-07-23 15:36:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:12,382 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-23 15:36:12,382 INFO L472 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-23 15:36:12,383 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-23 15:36:12,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-23 15:36:12,383 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:12,383 INFO L353 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-07-23 15:36:12,384 INFO L414 AbstractCegarLoop]: === Iteration 193 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:12,384 INFO L82 PathProgramCache]: Analyzing trace with hash -433898208, now seen corresponding path program 192 times [2018-07-23 15:36:12,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:13,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:13,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-23 15:36:13,391 INFO L450 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-23 15:36:13,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-23 15:36:13,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:36:13,395 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-07-23 15:36:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:13,805 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-23 15:36:13,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-23 15:36:13,805 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-07-23 15:36:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:13,805 INFO L225 Difference]: With dead ends: 199 [2018-07-23 15:36:13,806 INFO L226 Difference]: Without dead ends: 197 [2018-07-23 15:36:13,808 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:36:13,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-23 15:36:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-23 15:36:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-23 15:36:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-23 15:36:13,812 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-07-23 15:36:13,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:13,812 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-23 15:36:13,812 INFO L472 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-23 15:36:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-23 15:36:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 15:36:13,813 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:13,813 INFO L353 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-07-23 15:36:13,813 INFO L414 AbstractCegarLoop]: === Iteration 194 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash -565944506, now seen corresponding path program 193 times [2018-07-23 15:36:13,814 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:14,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:14,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-23 15:36:14,801 INFO L450 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-23 15:36:14,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-23 15:36:14,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:36:14,805 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-07-23 15:36:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:15,513 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-23 15:36:15,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-23 15:36:15,513 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-07-23 15:36:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:15,513 INFO L225 Difference]: With dead ends: 200 [2018-07-23 15:36:15,513 INFO L226 Difference]: Without dead ends: 198 [2018-07-23 15:36:15,515 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:36:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-23 15:36:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-23 15:36:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-23 15:36:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-23 15:36:15,518 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-07-23 15:36:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:15,519 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-23 15:36:15,519 INFO L472 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-23 15:36:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-23 15:36:15,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-23 15:36:15,520 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:15,520 INFO L353 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-07-23 15:36:15,520 INFO L414 AbstractCegarLoop]: === Iteration 195 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:15,520 INFO L82 PathProgramCache]: Analyzing trace with hash -364412448, now seen corresponding path program 194 times [2018-07-23 15:36:15,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:16,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:16,651 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-23 15:36:16,651 INFO L450 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-23 15:36:16,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-23 15:36:16,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:36:16,656 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-07-23 15:36:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:17,590 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-23 15:36:17,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-23 15:36:17,590 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-07-23 15:36:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:17,590 INFO L225 Difference]: With dead ends: 201 [2018-07-23 15:36:17,590 INFO L226 Difference]: Without dead ends: 199 [2018-07-23 15:36:17,593 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:36:17,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-23 15:36:17,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-23 15:36:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-23 15:36:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-23 15:36:17,596 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-07-23 15:36:17,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:17,596 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-23 15:36:17,596 INFO L472 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-23 15:36:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-23 15:36:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-23 15:36:17,597 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:17,597 INFO L353 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-07-23 15:36:17,597 INFO L414 AbstractCegarLoop]: === Iteration 196 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:17,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1588114054, now seen corresponding path program 195 times [2018-07-23 15:36:17,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:18,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:18,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-23 15:36:18,674 INFO L450 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-23 15:36:18,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-23 15:36:18,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:36:18,676 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-07-23 15:36:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:19,592 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-23 15:36:19,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-23 15:36:19,592 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-07-23 15:36:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:19,593 INFO L225 Difference]: With dead ends: 202 [2018-07-23 15:36:19,593 INFO L226 Difference]: Without dead ends: 200 [2018-07-23 15:36:19,594 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:36:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-23 15:36:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-23 15:36:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-23 15:36:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-23 15:36:19,596 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-07-23 15:36:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:19,597 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-23 15:36:19,597 INFO L472 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-23 15:36:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-23 15:36:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-23 15:36:19,597 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:19,597 INFO L353 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-07-23 15:36:19,597 INFO L414 AbstractCegarLoop]: === Iteration 197 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:19,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1986893472, now seen corresponding path program 196 times [2018-07-23 15:36:19,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:20,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:20,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-23 15:36:20,750 INFO L450 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-23 15:36:20,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-23 15:36:20,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:36:20,756 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-07-23 15:36:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:22,033 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-23 15:36:22,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-23 15:36:22,034 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-07-23 15:36:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:22,035 INFO L225 Difference]: With dead ends: 203 [2018-07-23 15:36:22,035 INFO L226 Difference]: Without dead ends: 201 [2018-07-23 15:36:22,040 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:36:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-23 15:36:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-23 15:36:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-23 15:36:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-23 15:36:22,044 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-07-23 15:36:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:22,044 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-23 15:36:22,045 INFO L472 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-23 15:36:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-23 15:36:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-23 15:36:22,045 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:22,046 INFO L353 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-07-23 15:36:22,046 INFO L414 AbstractCegarLoop]: === Iteration 198 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:22,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1464153542, now seen corresponding path program 197 times [2018-07-23 15:36:22,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:23,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:23,416 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-23 15:36:23,416 INFO L450 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-23 15:36:23,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-23 15:36:23,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:36:23,424 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-07-23 15:36:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:24,281 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-23 15:36:24,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-23 15:36:24,281 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-07-23 15:36:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:24,282 INFO L225 Difference]: With dead ends: 204 [2018-07-23 15:36:24,282 INFO L226 Difference]: Without dead ends: 202 [2018-07-23 15:36:24,285 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:36:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-23 15:36:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-23 15:36:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-23 15:36:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-23 15:36:24,289 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-07-23 15:36:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:24,289 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-23 15:36:24,289 INFO L472 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-23 15:36:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-23 15:36:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-23 15:36:24,290 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:24,290 INFO L353 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-07-23 15:36:24,290 INFO L414 AbstractCegarLoop]: === Iteration 199 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1855882400, now seen corresponding path program 198 times [2018-07-23 15:36:24,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:25,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:25,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-23 15:36:25,400 INFO L450 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-23 15:36:25,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-23 15:36:25,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:36:25,404 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-07-23 15:36:26,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:26,165 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-23 15:36:26,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-23 15:36:26,165 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-07-23 15:36:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:26,166 INFO L225 Difference]: With dead ends: 205 [2018-07-23 15:36:26,166 INFO L226 Difference]: Without dead ends: 203 [2018-07-23 15:36:26,168 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:36:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-23 15:36:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-23 15:36:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-23 15:36:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-23 15:36:26,171 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-07-23 15:36:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:26,171 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-23 15:36:26,171 INFO L472 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-23 15:36:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-23 15:36:26,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 15:36:26,171 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:26,172 INFO L353 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-07-23 15:36:26,172 INFO L414 AbstractCegarLoop]: === Iteration 200 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:26,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1697781498, now seen corresponding path program 199 times [2018-07-23 15:36:26,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:27,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:27,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-23 15:36:27,254 INFO L450 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-23 15:36:27,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-23 15:36:27,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:36:27,259 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-07-23 15:36:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:27,966 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-23 15:36:27,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-23 15:36:27,966 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-07-23 15:36:27,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:27,967 INFO L225 Difference]: With dead ends: 206 [2018-07-23 15:36:27,967 INFO L226 Difference]: Without dead ends: 204 [2018-07-23 15:36:27,969 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:36:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-23 15:36:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-23 15:36:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-23 15:36:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-23 15:36:27,971 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-07-23 15:36:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:27,971 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-23 15:36:27,971 INFO L472 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-23 15:36:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-23 15:36:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-23 15:36:27,972 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:27,972 INFO L353 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-07-23 15:36:27,972 INFO L414 AbstractCegarLoop]: === Iteration 201 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:27,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1091620832, now seen corresponding path program 200 times [2018-07-23 15:36:27,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:29,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:29,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-23 15:36:29,040 INFO L450 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-23 15:36:29,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-23 15:36:29,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:36:29,042 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-07-23 15:36:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:29,709 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-23 15:36:29,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-23 15:36:29,709 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-07-23 15:36:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:29,709 INFO L225 Difference]: With dead ends: 207 [2018-07-23 15:36:29,710 INFO L226 Difference]: Without dead ends: 205 [2018-07-23 15:36:29,711 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:36:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-23 15:36:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-23 15:36:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-23 15:36:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-23 15:36:29,714 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-07-23 15:36:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:29,714 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-23 15:36:29,714 INFO L472 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-23 15:36:29,714 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-23 15:36:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-23 15:36:29,715 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:29,715 INFO L353 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-07-23 15:36:29,715 INFO L414 AbstractCegarLoop]: === Iteration 202 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:29,715 INFO L82 PathProgramCache]: Analyzing trace with hash 519490630, now seen corresponding path program 201 times [2018-07-23 15:36:29,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:30,812 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:30,812 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-23 15:36:30,812 INFO L450 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-23 15:36:30,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-23 15:36:30,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:36:30,817 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-07-23 15:36:31,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:31,562 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-23 15:36:31,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-23 15:36:31,562 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-07-23 15:36:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:31,562 INFO L225 Difference]: With dead ends: 208 [2018-07-23 15:36:31,562 INFO L226 Difference]: Without dead ends: 206 [2018-07-23 15:36:31,564 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:36:31,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-23 15:36:31,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-23 15:36:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-23 15:36:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-23 15:36:31,567 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-07-23 15:36:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:31,567 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-23 15:36:31,567 INFO L472 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-23 15:36:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-23 15:36:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-23 15:36:31,567 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:31,567 INFO L353 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-07-23 15:36:31,568 INFO L414 AbstractCegarLoop]: === Iteration 203 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1075661600, now seen corresponding path program 202 times [2018-07-23 15:36:31,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:32,721 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:32,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-23 15:36:32,721 INFO L450 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-23 15:36:32,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-23 15:36:32,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:36:32,726 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-07-23 15:36:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:33,574 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-23 15:36:33,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-23 15:36:33,575 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-07-23 15:36:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:33,575 INFO L225 Difference]: With dead ends: 209 [2018-07-23 15:36:33,575 INFO L226 Difference]: Without dead ends: 207 [2018-07-23 15:36:33,578 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:36:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-23 15:36:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-23 15:36:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-23 15:36:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-23 15:36:33,580 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-07-23 15:36:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:33,581 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-23 15:36:33,581 INFO L472 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-23 15:36:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-23 15:36:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-23 15:36:33,581 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:33,581 INFO L353 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-07-23 15:36:33,581 INFO L414 AbstractCegarLoop]: === Iteration 204 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1014226822, now seen corresponding path program 203 times [2018-07-23 15:36:33,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:34,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:34,713 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-23 15:36:34,713 INFO L450 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-23 15:36:34,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-23 15:36:34,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:36:34,718 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-07-23 15:36:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:35,706 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-23 15:36:35,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-23 15:36:35,706 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-07-23 15:36:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:35,706 INFO L225 Difference]: With dead ends: 210 [2018-07-23 15:36:35,706 INFO L226 Difference]: Without dead ends: 208 [2018-07-23 15:36:35,709 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:36:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-23 15:36:35,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-23 15:36:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-23 15:36:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-23 15:36:35,712 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-07-23 15:36:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:35,712 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-23 15:36:35,712 INFO L472 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-23 15:36:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-23 15:36:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-23 15:36:35,713 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:35,713 INFO L353 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-07-23 15:36:35,713 INFO L414 AbstractCegarLoop]: === Iteration 205 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:35,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1376258464, now seen corresponding path program 204 times [2018-07-23 15:36:35,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:36,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:36,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-23 15:36:36,887 INFO L450 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-23 15:36:36,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-23 15:36:36,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:36:36,892 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-07-23 15:36:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:38,048 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-23 15:36:38,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-23 15:36:38,048 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-07-23 15:36:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:38,049 INFO L225 Difference]: With dead ends: 211 [2018-07-23 15:36:38,049 INFO L226 Difference]: Without dead ends: 209 [2018-07-23 15:36:38,052 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:36:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-23 15:36:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-23 15:36:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-23 15:36:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-23 15:36:38,055 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-07-23 15:36:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:38,055 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-23 15:36:38,055 INFO L472 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-23 15:36:38,055 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-23 15:36:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 15:36:38,055 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:38,055 INFO L353 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-07-23 15:36:38,056 INFO L414 AbstractCegarLoop]: === Iteration 206 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:38,056 INFO L82 PathProgramCache]: Analyzing trace with hash -285662522, now seen corresponding path program 205 times [2018-07-23 15:36:38,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:39,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:39,177 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-23 15:36:39,177 INFO L450 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-23 15:36:39,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-23 15:36:39,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:36:39,181 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-07-23 15:36:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:40,547 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-23 15:36:40,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-23 15:36:40,547 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-07-23 15:36:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:40,548 INFO L225 Difference]: With dead ends: 212 [2018-07-23 15:36:40,548 INFO L226 Difference]: Without dead ends: 210 [2018-07-23 15:36:40,550 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:36:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-23 15:36:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-23 15:36:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-23 15:36:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-23 15:36:40,553 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-07-23 15:36:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:40,553 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-23 15:36:40,553 INFO L472 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-23 15:36:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-23 15:36:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-23 15:36:40,554 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:40,554 INFO L353 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-07-23 15:36:40,554 INFO L414 AbstractCegarLoop]: === Iteration 207 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:40,554 INFO L82 PathProgramCache]: Analyzing trace with hash -265605536, now seen corresponding path program 206 times [2018-07-23 15:36:40,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:41,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:41,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-23 15:36:41,853 INFO L450 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-23 15:36:41,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-23 15:36:41,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:36:41,858 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-07-23 15:36:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:43,323 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-23 15:36:43,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-23 15:36:43,323 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-07-23 15:36:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:43,323 INFO L225 Difference]: With dead ends: 213 [2018-07-23 15:36:43,323 INFO L226 Difference]: Without dead ends: 211 [2018-07-23 15:36:43,328 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:36:43,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-23 15:36:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-23 15:36:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-23 15:36:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-23 15:36:43,331 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-07-23 15:36:43,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:43,331 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-23 15:36:43,332 INFO L472 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-23 15:36:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-23 15:36:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-23 15:36:43,332 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:43,333 INFO L353 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-07-23 15:36:43,333 INFO L414 AbstractCegarLoop]: === Iteration 208 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:43,333 INFO L82 PathProgramCache]: Analyzing trace with hash 356161030, now seen corresponding path program 207 times [2018-07-23 15:36:43,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:44,655 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:44,655 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-23 15:36:44,656 INFO L450 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-23 15:36:44,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-23 15:36:44,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:36:44,659 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-07-23 15:36:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:45,697 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-23 15:36:45,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-23 15:36:45,697 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-07-23 15:36:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:45,698 INFO L225 Difference]: With dead ends: 214 [2018-07-23 15:36:45,698 INFO L226 Difference]: Without dead ends: 212 [2018-07-23 15:36:45,699 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:36:45,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-23 15:36:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-23 15:36:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-23 15:36:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-23 15:36:45,702 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-07-23 15:36:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:45,703 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-23 15:36:45,703 INFO L472 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-23 15:36:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-23 15:36:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-23 15:36:45,704 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:45,704 INFO L353 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-07-23 15:36:45,704 INFO L414 AbstractCegarLoop]: === Iteration 209 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:45,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1843911904, now seen corresponding path program 208 times [2018-07-23 15:36:45,704 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:47,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:47,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-23 15:36:47,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-23 15:36:47,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-23 15:36:47,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:36:47,336 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-07-23 15:36:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:48,035 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-23 15:36:48,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-23 15:36:48,035 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-07-23 15:36:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:48,036 INFO L225 Difference]: With dead ends: 215 [2018-07-23 15:36:48,036 INFO L226 Difference]: Without dead ends: 213 [2018-07-23 15:36:48,039 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:36:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-23 15:36:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-23 15:36:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-23 15:36:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-23 15:36:48,042 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-07-23 15:36:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:48,042 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-23 15:36:48,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-23 15:36:48,042 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-23 15:36:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 15:36:48,043 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:48,043 INFO L353 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-07-23 15:36:48,043 INFO L414 AbstractCegarLoop]: === Iteration 210 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:48,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1326696122, now seen corresponding path program 209 times [2018-07-23 15:36:48,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:49,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:49,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-23 15:36:49,390 INFO L450 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-23 15:36:49,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-23 15:36:49,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:36:49,399 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-07-23 15:36:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:50,008 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-23 15:36:50,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-23 15:36:50,008 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-07-23 15:36:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:50,009 INFO L225 Difference]: With dead ends: 216 [2018-07-23 15:36:50,009 INFO L226 Difference]: Without dead ends: 214 [2018-07-23 15:36:50,010 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:36:50,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-23 15:36:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-23 15:36:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-23 15:36:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-23 15:36:50,012 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-07-23 15:36:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:50,013 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-23 15:36:50,013 INFO L472 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-23 15:36:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-23 15:36:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-23 15:36:50,013 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:50,013 INFO L353 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-07-23 15:36:50,014 INFO L414 AbstractCegarLoop]: === Iteration 211 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1822091232, now seen corresponding path program 210 times [2018-07-23 15:36:50,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:51,232 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:51,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-23 15:36:51,232 INFO L450 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-23 15:36:51,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-23 15:36:51,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:36:51,237 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-07-23 15:36:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:52,144 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-23 15:36:52,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-23 15:36:52,144 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-07-23 15:36:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:52,145 INFO L225 Difference]: With dead ends: 217 [2018-07-23 15:36:52,145 INFO L226 Difference]: Without dead ends: 215 [2018-07-23 15:36:52,148 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:36:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-23 15:36:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-23 15:36:52,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-23 15:36:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-23 15:36:52,150 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-07-23 15:36:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:52,151 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-23 15:36:52,151 INFO L472 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-23 15:36:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-23 15:36:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-23 15:36:52,151 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:52,151 INFO L353 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-07-23 15:36:52,151 INFO L414 AbstractCegarLoop]: === Iteration 212 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:52,152 INFO L82 PathProgramCache]: Analyzing trace with hash 650251398, now seen corresponding path program 211 times [2018-07-23 15:36:52,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:53,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:53,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-23 15:36:53,458 INFO L450 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-23 15:36:53,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-23 15:36:53,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:36:53,468 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-07-23 15:36:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:54,801 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-23 15:36:54,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-23 15:36:54,801 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-07-23 15:36:54,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:54,802 INFO L225 Difference]: With dead ends: 218 [2018-07-23 15:36:54,802 INFO L226 Difference]: Without dead ends: 216 [2018-07-23 15:36:54,805 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:36:54,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-23 15:36:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-23 15:36:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-23 15:36:54,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-23 15:36:54,807 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-07-23 15:36:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:54,807 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-23 15:36:54,807 INFO L472 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-23 15:36:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-23 15:36:54,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-23 15:36:54,808 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:54,808 INFO L353 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-07-23 15:36:54,808 INFO L414 AbstractCegarLoop]: === Iteration 213 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1317045088, now seen corresponding path program 212 times [2018-07-23 15:36:54,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:56,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:56,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-23 15:36:56,071 INFO L450 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-23 15:36:56,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-23 15:36:56,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-23 15:36:56,077 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-07-23 15:36:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:56,979 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-23 15:36:56,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-23 15:36:56,979 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-07-23 15:36:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:56,979 INFO L225 Difference]: With dead ends: 219 [2018-07-23 15:36:56,979 INFO L226 Difference]: Without dead ends: 217 [2018-07-23 15:36:56,982 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-23 15:36:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-23 15:36:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-23 15:36:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-23 15:36:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-23 15:36:56,984 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-07-23 15:36:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:56,985 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-23 15:36:56,985 INFO L472 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-23 15:36:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-23 15:36:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-23 15:36:56,985 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:56,985 INFO L353 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-07-23 15:36:56,985 INFO L414 AbstractCegarLoop]: === Iteration 214 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:56,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2121273286, now seen corresponding path program 213 times [2018-07-23 15:36:56,986 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:58,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:58,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-23 15:36:58,265 INFO L450 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-23 15:36:58,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-23 15:36:58,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:36:58,273 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-07-23 15:36:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:36:58,648 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-23 15:36:58,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-23 15:36:58,648 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-07-23 15:36:58,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:36:58,649 INFO L225 Difference]: With dead ends: 220 [2018-07-23 15:36:58,649 INFO L226 Difference]: Without dead ends: 218 [2018-07-23 15:36:58,652 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:36:58,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-23 15:36:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-23 15:36:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-23 15:36:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-23 15:36:58,654 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-07-23 15:36:58,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:36:58,654 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-23 15:36:58,654 INFO L472 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-23 15:36:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-23 15:36:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-23 15:36:58,655 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:36:58,655 INFO L353 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-07-23 15:36:58,655 INFO L414 AbstractCegarLoop]: === Iteration 215 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:36:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1334960480, now seen corresponding path program 214 times [2018-07-23 15:36:58,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:36:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:36:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:36:59,884 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:36:59,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-23 15:36:59,884 INFO L450 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-23 15:36:59,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-23 15:36:59,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:36:59,888 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-07-23 15:37:00,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:00,617 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-23 15:37:00,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-23 15:37:00,617 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-07-23 15:37:00,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:00,618 INFO L225 Difference]: With dead ends: 221 [2018-07-23 15:37:00,618 INFO L226 Difference]: Without dead ends: 219 [2018-07-23 15:37:00,620 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:37:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-23 15:37:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-23 15:37:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-23 15:37:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-23 15:37:00,622 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-07-23 15:37:00,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:00,622 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-23 15:37:00,623 INFO L472 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-23 15:37:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-23 15:37:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 15:37:00,623 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:00,623 INFO L353 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-07-23 15:37:00,623 INFO L414 AbstractCegarLoop]: === Iteration 216 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:00,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1565900026, now seen corresponding path program 215 times [2018-07-23 15:37:00,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:01,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:01,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-23 15:37:01,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-23 15:37:01,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-23 15:37:01,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:37:01,810 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-07-23 15:37:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:03,174 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-23 15:37:03,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-23 15:37:03,174 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-07-23 15:37:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:03,174 INFO L225 Difference]: With dead ends: 222 [2018-07-23 15:37:03,174 INFO L226 Difference]: Without dead ends: 220 [2018-07-23 15:37:03,176 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:37:03,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-23 15:37:03,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-23 15:37:03,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-23 15:37:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-23 15:37:03,179 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-07-23 15:37:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:03,179 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-23 15:37:03,179 INFO L472 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-23 15:37:03,179 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-23 15:37:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-23 15:37:03,180 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:03,180 INFO L353 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-07-23 15:37:03,180 INFO L414 AbstractCegarLoop]: === Iteration 217 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:03,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1298262496, now seen corresponding path program 216 times [2018-07-23 15:37:03,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:04,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:04,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-23 15:37:04,412 INFO L450 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-23 15:37:04,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-23 15:37:04,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-23 15:37:04,417 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-07-23 15:37:05,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:05,396 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-23 15:37:05,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-23 15:37:05,396 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-07-23 15:37:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:05,397 INFO L225 Difference]: With dead ends: 223 [2018-07-23 15:37:05,397 INFO L226 Difference]: Without dead ends: 221 [2018-07-23 15:37:05,399 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-23 15:37:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-23 15:37:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-23 15:37:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-23 15:37:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-23 15:37:05,402 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-07-23 15:37:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:05,402 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-23 15:37:05,402 INFO L472 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-23 15:37:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-23 15:37:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-23 15:37:05,402 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:05,403 INFO L353 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-07-23 15:37:05,403 INFO L414 AbstractCegarLoop]: === Iteration 218 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1591433658, now seen corresponding path program 217 times [2018-07-23 15:37:05,403 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:06,603 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:06,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-23 15:37:06,604 INFO L450 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-23 15:37:06,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-23 15:37:06,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:37:06,608 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-07-23 15:37:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:07,413 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-23 15:37:07,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-23 15:37:07,413 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-07-23 15:37:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:07,414 INFO L225 Difference]: With dead ends: 224 [2018-07-23 15:37:07,414 INFO L226 Difference]: Without dead ends: 222 [2018-07-23 15:37:07,416 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:37:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-23 15:37:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-23 15:37:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-23 15:37:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-23 15:37:07,419 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-07-23 15:37:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:07,420 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-23 15:37:07,420 INFO L472 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-23 15:37:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-23 15:37:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-23 15:37:07,421 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:07,421 INFO L353 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-07-23 15:37:07,421 INFO L414 AbstractCegarLoop]: === Iteration 219 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:07,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2089805088, now seen corresponding path program 218 times [2018-07-23 15:37:07,421 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:08,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:08,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-23 15:37:08,671 INFO L450 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-23 15:37:08,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-23 15:37:08,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:37:08,675 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-07-23 15:37:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:10,112 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-23 15:37:10,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-23 15:37:10,112 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-07-23 15:37:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:10,112 INFO L225 Difference]: With dead ends: 225 [2018-07-23 15:37:10,112 INFO L226 Difference]: Without dead ends: 223 [2018-07-23 15:37:10,114 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:37:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-23 15:37:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-23 15:37:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-23 15:37:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-23 15:37:10,117 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-07-23 15:37:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:10,117 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-23 15:37:10,117 INFO L472 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-23 15:37:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-23 15:37:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-23 15:37:10,118 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:10,118 INFO L353 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-07-23 15:37:10,118 INFO L414 AbstractCegarLoop]: === Iteration 220 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash -359450234, now seen corresponding path program 219 times [2018-07-23 15:37:10,118 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:11,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:11,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-23 15:37:11,338 INFO L450 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-23 15:37:11,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-23 15:37:11,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:37:11,342 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-07-23 15:37:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:11,851 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-23 15:37:11,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-23 15:37:11,851 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-07-23 15:37:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:11,852 INFO L225 Difference]: With dead ends: 226 [2018-07-23 15:37:11,852 INFO L226 Difference]: Without dead ends: 224 [2018-07-23 15:37:11,854 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:37:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-23 15:37:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-23 15:37:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-23 15:37:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-23 15:37:11,858 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-07-23 15:37:11,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:11,858 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-23 15:37:11,858 INFO L472 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-23 15:37:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-23 15:37:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-23 15:37:11,859 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:11,859 INFO L353 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-07-23 15:37:11,859 INFO L414 AbstractCegarLoop]: === Iteration 221 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:11,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1741942688, now seen corresponding path program 220 times [2018-07-23 15:37:11,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:13,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:13,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-23 15:37:13,306 INFO L450 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-23 15:37:13,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-23 15:37:13,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-23 15:37:13,310 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-07-23 15:37:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:14,162 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-23 15:37:14,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-23 15:37:14,162 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-07-23 15:37:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:14,163 INFO L225 Difference]: With dead ends: 227 [2018-07-23 15:37:14,163 INFO L226 Difference]: Without dead ends: 225 [2018-07-23 15:37:14,165 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-23 15:37:14,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-23 15:37:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-23 15:37:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-23 15:37:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-23 15:37:14,167 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-07-23 15:37:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:14,168 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-23 15:37:14,168 INFO L472 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-23 15:37:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-23 15:37:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-23 15:37:14,168 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:14,168 INFO L353 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-07-23 15:37:14,168 INFO L414 AbstractCegarLoop]: === Iteration 222 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:14,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1834353466, now seen corresponding path program 221 times [2018-07-23 15:37:14,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:15,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:15,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-23 15:37:15,461 INFO L450 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-23 15:37:15,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-23 15:37:15,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:37:15,467 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-07-23 15:37:16,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:16,998 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-23 15:37:16,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-23 15:37:16,998 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-07-23 15:37:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:16,998 INFO L225 Difference]: With dead ends: 228 [2018-07-23 15:37:16,998 INFO L226 Difference]: Without dead ends: 226 [2018-07-23 15:37:16,999 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:37:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-23 15:37:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-23 15:37:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-23 15:37:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-23 15:37:17,002 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-07-23 15:37:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:17,002 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-23 15:37:17,002 INFO L472 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-23 15:37:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-23 15:37:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-23 15:37:17,002 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:17,003 INFO L353 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-07-23 15:37:17,003 INFO L414 AbstractCegarLoop]: === Iteration 223 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1030384544, now seen corresponding path program 222 times [2018-07-23 15:37:17,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:18,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:18,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-23 15:37:18,240 INFO L450 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-23 15:37:18,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-23 15:37:18,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:37:18,245 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-07-23 15:37:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:19,100 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-23 15:37:19,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-23 15:37:19,100 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-07-23 15:37:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:19,101 INFO L225 Difference]: With dead ends: 229 [2018-07-23 15:37:19,101 INFO L226 Difference]: Without dead ends: 227 [2018-07-23 15:37:19,103 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:37:19,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-23 15:37:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-23 15:37:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-23 15:37:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-23 15:37:19,106 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-07-23 15:37:19,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:19,106 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-23 15:37:19,106 INFO L472 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-23 15:37:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-23 15:37:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 15:37:19,106 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:19,106 INFO L353 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-07-23 15:37:19,107 INFO L414 AbstractCegarLoop]: === Iteration 224 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:19,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1877151738, now seen corresponding path program 223 times [2018-07-23 15:37:19,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:20,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:20,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-23 15:37:20,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-23 15:37:20,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-23 15:37:20,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-23 15:37:20,418 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-07-23 15:37:22,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:22,288 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-23 15:37:22,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-23 15:37:22,288 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-07-23 15:37:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:22,288 INFO L225 Difference]: With dead ends: 230 [2018-07-23 15:37:22,288 INFO L226 Difference]: Without dead ends: 228 [2018-07-23 15:37:22,290 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-23 15:37:22,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-23 15:37:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-23 15:37:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-23 15:37:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-23 15:37:22,292 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-07-23 15:37:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:22,293 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-23 15:37:22,293 INFO L472 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-23 15:37:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-23 15:37:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-23 15:37:22,293 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:22,293 INFO L353 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-07-23 15:37:22,294 INFO L414 AbstractCegarLoop]: === Iteration 225 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:22,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1937836320, now seen corresponding path program 224 times [2018-07-23 15:37:22,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:23,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:23,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-23 15:37:23,748 INFO L450 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-23 15:37:23,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-23 15:37:23,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-23 15:37:23,754 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-07-23 15:37:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:24,261 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-23 15:37:24,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-23 15:37:24,261 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-07-23 15:37:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:24,261 INFO L225 Difference]: With dead ends: 231 [2018-07-23 15:37:24,261 INFO L226 Difference]: Without dead ends: 229 [2018-07-23 15:37:24,264 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-23 15:37:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-23 15:37:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-23 15:37:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-23 15:37:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-23 15:37:24,266 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-07-23 15:37:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:24,266 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-23 15:37:24,267 INFO L472 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-23 15:37:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-23 15:37:24,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-23 15:37:24,267 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:24,267 INFO L353 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-07-23 15:37:24,267 INFO L414 AbstractCegarLoop]: === Iteration 226 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:24,267 INFO L82 PathProgramCache]: Analyzing trace with hash -56618170, now seen corresponding path program 225 times [2018-07-23 15:37:24,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:25,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:25,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-23 15:37:25,625 INFO L450 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-23 15:37:25,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-23 15:37:25,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-23 15:37:25,628 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-07-23 15:37:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:27,123 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-23 15:37:27,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-23 15:37:27,124 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-07-23 15:37:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:27,124 INFO L225 Difference]: With dead ends: 232 [2018-07-23 15:37:27,124 INFO L226 Difference]: Without dead ends: 230 [2018-07-23 15:37:27,126 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-23 15:37:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-23 15:37:27,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-23 15:37:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-23 15:37:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-23 15:37:27,128 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-07-23 15:37:27,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:27,128 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-23 15:37:27,128 INFO L472 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-23 15:37:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-23 15:37:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-23 15:37:27,129 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:27,129 INFO L353 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-07-23 15:37:27,129 INFO L414 AbstractCegarLoop]: === Iteration 227 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:27,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1755165216, now seen corresponding path program 226 times [2018-07-23 15:37:27,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:28,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:28,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-23 15:37:28,418 INFO L450 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-23 15:37:28,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-23 15:37:28,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-23 15:37:28,422 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-07-23 15:37:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:29,410 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-23 15:37:29,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-23 15:37:29,410 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-07-23 15:37:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:29,410 INFO L225 Difference]: With dead ends: 233 [2018-07-23 15:37:29,410 INFO L226 Difference]: Without dead ends: 231 [2018-07-23 15:37:29,413 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-23 15:37:29,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-23 15:37:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-23 15:37:29,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-23 15:37:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-23 15:37:29,415 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-07-23 15:37:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:29,415 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-23 15:37:29,415 INFO L472 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-23 15:37:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-23 15:37:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-23 15:37:29,416 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:29,416 INFO L353 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-07-23 15:37:29,416 INFO L414 AbstractCegarLoop]: === Iteration 228 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:29,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451206, now seen corresponding path program 227 times [2018-07-23 15:37:29,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:30,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:30,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-23 15:37:30,754 INFO L450 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-23 15:37:30,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-23 15:37:30,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-23 15:37:30,758 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-07-23 15:37:32,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:32,353 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-23 15:37:32,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-23 15:37:32,353 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-07-23 15:37:32,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:32,354 INFO L225 Difference]: With dead ends: 234 [2018-07-23 15:37:32,354 INFO L226 Difference]: Without dead ends: 232 [2018-07-23 15:37:32,357 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-23 15:37:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-23 15:37:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-23 15:37:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-23 15:37:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-23 15:37:32,359 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-07-23 15:37:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:32,360 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-23 15:37:32,360 INFO L472 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-23 15:37:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-23 15:37:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-23 15:37:32,360 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:32,360 INFO L353 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-07-23 15:37:32,361 INFO L414 AbstractCegarLoop]: === Iteration 229 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:32,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1208312480, now seen corresponding path program 228 times [2018-07-23 15:37:32,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:33,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:33,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-23 15:37:33,684 INFO L450 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-23 15:37:33,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-23 15:37:33,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-23 15:37:33,688 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-07-23 15:37:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:34,130 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-23 15:37:34,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-23 15:37:34,130 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-07-23 15:37:34,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:34,130 INFO L225 Difference]: With dead ends: 235 [2018-07-23 15:37:34,130 INFO L226 Difference]: Without dead ends: 233 [2018-07-23 15:37:34,133 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-23 15:37:34,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-23 15:37:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-23 15:37:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-23 15:37:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-23 15:37:34,136 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-07-23 15:37:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:34,136 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-23 15:37:34,136 INFO L472 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-23 15:37:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-23 15:37:34,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-23 15:37:34,136 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:34,137 INFO L353 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-07-23 15:37:34,137 INFO L414 AbstractCegarLoop]: === Iteration 230 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:34,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1197020730, now seen corresponding path program 229 times [2018-07-23 15:37:34,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:35,508 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:35,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-23 15:37:35,508 INFO L450 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-23 15:37:35,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-23 15:37:35,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-23 15:37:35,513 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-07-23 15:37:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:37,218 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-23 15:37:37,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-23 15:37:37,218 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-07-23 15:37:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:37,218 INFO L225 Difference]: With dead ends: 236 [2018-07-23 15:37:37,218 INFO L226 Difference]: Without dead ends: 234 [2018-07-23 15:37:37,221 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-23 15:37:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-23 15:37:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-23 15:37:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-23 15:37:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-23 15:37:37,224 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-07-23 15:37:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:37,224 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-23 15:37:37,224 INFO L472 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-23 15:37:37,224 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-23 15:37:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-23 15:37:37,225 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:37,225 INFO L353 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-07-23 15:37:37,225 INFO L414 AbstractCegarLoop]: === Iteration 231 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:37,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1547061088, now seen corresponding path program 230 times [2018-07-23 15:37:37,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:38,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:38,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-23 15:37:38,657 INFO L450 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-23 15:37:38,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-23 15:37:38,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-23 15:37:38,660 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-07-23 15:37:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:39,703 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-23 15:37:39,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-23 15:37:39,704 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-07-23 15:37:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:39,704 INFO L225 Difference]: With dead ends: 237 [2018-07-23 15:37:39,704 INFO L226 Difference]: Without dead ends: 235 [2018-07-23 15:37:39,705 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-23 15:37:39,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-23 15:37:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-23 15:37:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-23 15:37:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-23 15:37:39,708 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-07-23 15:37:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:39,708 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-23 15:37:39,708 INFO L472 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-23 15:37:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-23 15:37:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-23 15:37:39,708 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:39,709 INFO L353 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-07-23 15:37:39,709 INFO L414 AbstractCegarLoop]: === Iteration 232 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:39,709 INFO L82 PathProgramCache]: Analyzing trace with hash 714251526, now seen corresponding path program 231 times [2018-07-23 15:37:39,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:41,072 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:41,072 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-23 15:37:41,072 INFO L450 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-23 15:37:41,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-23 15:37:41,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-23 15:37:41,077 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-07-23 15:37:41,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:41,938 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-23 15:37:41,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-23 15:37:41,938 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-07-23 15:37:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:41,938 INFO L225 Difference]: With dead ends: 238 [2018-07-23 15:37:41,938 INFO L226 Difference]: Without dead ends: 236 [2018-07-23 15:37:41,942 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-23 15:37:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-23 15:37:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-23 15:37:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-23 15:37:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-23 15:37:41,944 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-07-23 15:37:41,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:41,944 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-23 15:37:41,944 INFO L472 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-23 15:37:41,944 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-23 15:37:41,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-23 15:37:41,945 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:41,945 INFO L353 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-07-23 15:37:41,945 INFO L414 AbstractCegarLoop]: === Iteration 233 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:41,945 INFO L82 PathProgramCache]: Analyzing trace with hash 666958880, now seen corresponding path program 232 times [2018-07-23 15:37:41,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:43,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:43,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234] total 234 [2018-07-23 15:37:43,366 INFO L450 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-07-23 15:37:43,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-07-23 15:37:43,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-23 15:37:43,370 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-07-23 15:37:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:44,802 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-23 15:37:44,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-23 15:37:44,802 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-07-23 15:37:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:44,803 INFO L225 Difference]: With dead ends: 239 [2018-07-23 15:37:44,803 INFO L226 Difference]: Without dead ends: 237 [2018-07-23 15:37:44,805 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-23 15:37:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-23 15:37:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-23 15:37:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-23 15:37:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-23 15:37:44,807 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-07-23 15:37:44,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:44,807 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-23 15:37:44,807 INFO L472 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-07-23 15:37:44,807 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-23 15:37:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-23 15:37:44,808 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:44,808 INFO L353 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-07-23 15:37:44,808 INFO L414 AbstractCegarLoop]: === Iteration 234 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:44,808 INFO L82 PathProgramCache]: Analyzing trace with hash -799113146, now seen corresponding path program 233 times [2018-07-23 15:37:44,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:46,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:46,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-23 15:37:46,259 INFO L450 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-23 15:37:46,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-23 15:37:46,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-23 15:37:46,264 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-07-23 15:37:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:47,410 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-23 15:37:47,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-23 15:37:47,411 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-07-23 15:37:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:47,411 INFO L225 Difference]: With dead ends: 240 [2018-07-23 15:37:47,411 INFO L226 Difference]: Without dead ends: 238 [2018-07-23 15:37:47,414 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-23 15:37:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-23 15:37:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-23 15:37:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-23 15:37:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-23 15:37:47,416 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-07-23 15:37:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:47,416 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-23 15:37:47,416 INFO L472 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-23 15:37:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-23 15:37:47,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-23 15:37:47,417 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:47,417 INFO L353 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-07-23 15:37:47,417 INFO L414 AbstractCegarLoop]: === Iteration 235 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:47,417 INFO L82 PathProgramCache]: Analyzing trace with hash 997294304, now seen corresponding path program 234 times [2018-07-23 15:37:47,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:48,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:48,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-23 15:37:48,860 INFO L450 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-23 15:37:48,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-23 15:37:48,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-23 15:37:48,866 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-07-23 15:37:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:50,165 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-23 15:37:50,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-23 15:37:50,165 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-07-23 15:37:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:50,165 INFO L225 Difference]: With dead ends: 241 [2018-07-23 15:37:50,165 INFO L226 Difference]: Without dead ends: 239 [2018-07-23 15:37:50,169 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-23 15:37:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-23 15:37:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-23 15:37:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-23 15:37:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-23 15:37:50,172 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-07-23 15:37:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:50,172 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-23 15:37:50,172 INFO L472 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-23 15:37:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-23 15:37:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-23 15:37:50,173 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:50,173 INFO L353 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-07-23 15:37:50,173 INFO L414 AbstractCegarLoop]: === Iteration 236 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:50,173 INFO L82 PathProgramCache]: Analyzing trace with hash 851350406, now seen corresponding path program 235 times [2018-07-23 15:37:50,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:51,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:51,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-23 15:37:51,650 INFO L450 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-23 15:37:51,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-23 15:37:51,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-23 15:37:51,653 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-07-23 15:37:53,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:53,004 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-07-23 15:37:53,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-23 15:37:53,004 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-07-23 15:37:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:53,004 INFO L225 Difference]: With dead ends: 242 [2018-07-23 15:37:53,004 INFO L226 Difference]: Without dead ends: 240 [2018-07-23 15:37:53,006 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-23 15:37:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-23 15:37:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-23 15:37:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-23 15:37:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-23 15:37:53,008 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-07-23 15:37:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:53,008 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-23 15:37:53,008 INFO L472 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-07-23 15:37:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-23 15:37:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-23 15:37:53,009 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:53,009 INFO L353 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-07-23 15:37:53,009 INFO L414 AbstractCegarLoop]: === Iteration 237 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:53,009 INFO L82 PathProgramCache]: Analyzing trace with hash 622056864, now seen corresponding path program 236 times [2018-07-23 15:37:53,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:54,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:54,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238] total 238 [2018-07-23 15:37:54,454 INFO L450 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-07-23 15:37:54,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-07-23 15:37:54,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-23 15:37:54,460 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-07-23 15:37:55,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:55,682 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-23 15:37:55,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-07-23 15:37:55,682 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-07-23 15:37:55,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:55,683 INFO L225 Difference]: With dead ends: 243 [2018-07-23 15:37:55,683 INFO L226 Difference]: Without dead ends: 241 [2018-07-23 15:37:55,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-23 15:37:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-23 15:37:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-23 15:37:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-23 15:37:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-23 15:37:55,688 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-07-23 15:37:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:55,688 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-23 15:37:55,688 INFO L472 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-07-23 15:37:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-23 15:37:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-23 15:37:55,689 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:55,689 INFO L353 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-07-23 15:37:55,689 INFO L414 AbstractCegarLoop]: === Iteration 238 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2103891654, now seen corresponding path program 237 times [2018-07-23 15:37:55,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:57,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:57,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-23 15:37:57,159 INFO L450 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-23 15:37:57,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-23 15:37:57,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-23 15:37:57,164 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-07-23 15:37:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:37:58,269 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-07-23 15:37:58,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-23 15:37:58,269 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-07-23 15:37:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:37:58,270 INFO L225 Difference]: With dead ends: 244 [2018-07-23 15:37:58,270 INFO L226 Difference]: Without dead ends: 242 [2018-07-23 15:37:58,273 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-23 15:37:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-23 15:37:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-23 15:37:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-23 15:37:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-23 15:37:58,277 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-07-23 15:37:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:37:58,277 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-23 15:37:58,277 INFO L472 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-23 15:37:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-23 15:37:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-23 15:37:58,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:37:58,278 INFO L353 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-07-23 15:37:58,278 INFO L414 AbstractCegarLoop]: === Iteration 239 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:37:58,278 INFO L82 PathProgramCache]: Analyzing trace with hash 796129888, now seen corresponding path program 238 times [2018-07-23 15:37:58,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:37:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:37:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:37:59,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:37:59,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240] total 240 [2018-07-23 15:37:59,968 INFO L450 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-07-23 15:37:59,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-07-23 15:37:59,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-23 15:37:59,975 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-07-23 15:38:02,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:02,492 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-23 15:38:02,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-23 15:38:02,493 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-07-23 15:38:02,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:02,493 INFO L225 Difference]: With dead ends: 245 [2018-07-23 15:38:02,493 INFO L226 Difference]: Without dead ends: 243 [2018-07-23 15:38:02,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-23 15:38:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-23 15:38:02,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-23 15:38:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-23 15:38:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-23 15:38:02,499 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-07-23 15:38:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:02,499 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-23 15:38:02,499 INFO L472 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-07-23 15:38:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-23 15:38:02,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-23 15:38:02,500 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:02,500 INFO L353 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-07-23 15:38:02,500 INFO L414 AbstractCegarLoop]: === Iteration 240 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:02,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1089779194, now seen corresponding path program 239 times [2018-07-23 15:38:02,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:04,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:04,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241] total 241 [2018-07-23 15:38:04,185 INFO L450 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-07-23 15:38:04,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-07-23 15:38:04,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-23 15:38:04,192 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-07-23 15:38:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:05,670 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-07-23 15:38:05,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-23 15:38:05,671 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-07-23 15:38:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:05,671 INFO L225 Difference]: With dead ends: 246 [2018-07-23 15:38:05,671 INFO L226 Difference]: Without dead ends: 244 [2018-07-23 15:38:05,676 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-23 15:38:05,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-23 15:38:05,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-23 15:38:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-23 15:38:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-23 15:38:05,679 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-07-23 15:38:05,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:05,679 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-23 15:38:05,679 INFO L472 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-07-23 15:38:05,679 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-23 15:38:05,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-23 15:38:05,680 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:05,680 INFO L353 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-07-23 15:38:05,680 INFO L414 AbstractCegarLoop]: === Iteration 241 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash 576581408, now seen corresponding path program 240 times [2018-07-23 15:38:05,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:07,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:07,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242] total 242 [2018-07-23 15:38:07,341 INFO L450 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-07-23 15:38:07,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-07-23 15:38:07,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-23 15:38:07,346 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-07-23 15:38:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:07,970 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-23 15:38:07,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-07-23 15:38:07,971 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-07-23 15:38:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:07,971 INFO L225 Difference]: With dead ends: 247 [2018-07-23 15:38:07,971 INFO L226 Difference]: Without dead ends: 245 [2018-07-23 15:38:07,973 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-23 15:38:07,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-23 15:38:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-23 15:38:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-23 15:38:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-23 15:38:07,975 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-07-23 15:38:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:07,975 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-23 15:38:07,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-07-23 15:38:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-23 15:38:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-23 15:38:07,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:07,976 INFO L353 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-07-23 15:38:07,976 INFO L414 AbstractCegarLoop]: === Iteration 242 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash 694152518, now seen corresponding path program 241 times [2018-07-23 15:38:07,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:09,496 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:09,496 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-23 15:38:09,496 INFO L450 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-23 15:38:09,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-23 15:38:09,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-23 15:38:09,502 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-07-23 15:38:11,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:11,172 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-07-23 15:38:11,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-07-23 15:38:11,172 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-07-23 15:38:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:11,173 INFO L225 Difference]: With dead ends: 248 [2018-07-23 15:38:11,173 INFO L226 Difference]: Without dead ends: 246 [2018-07-23 15:38:11,175 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-23 15:38:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-23 15:38:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-23 15:38:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-23 15:38:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-23 15:38:11,178 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-07-23 15:38:11,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:11,178 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-23 15:38:11,178 INFO L472 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-23 15:38:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-23 15:38:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-23 15:38:11,179 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:11,179 INFO L353 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-07-23 15:38:11,179 INFO L414 AbstractCegarLoop]: === Iteration 243 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:11,179 INFO L82 PathProgramCache]: Analyzing trace with hash 43889632, now seen corresponding path program 242 times [2018-07-23 15:38:11,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:12,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:12,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244] total 244 [2018-07-23 15:38:12,818 INFO L450 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-07-23 15:38:12,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-07-23 15:38:12,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-23 15:38:12,824 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-07-23 15:38:14,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:14,349 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-23 15:38:14,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-23 15:38:14,349 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-07-23 15:38:14,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:14,349 INFO L225 Difference]: With dead ends: 249 [2018-07-23 15:38:14,349 INFO L226 Difference]: Without dead ends: 247 [2018-07-23 15:38:14,352 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-23 15:38:14,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-23 15:38:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-23 15:38:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-23 15:38:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-23 15:38:14,355 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-07-23 15:38:14,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:14,355 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-23 15:38:14,355 INFO L472 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-07-23 15:38:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-23 15:38:14,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-23 15:38:14,356 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:14,356 INFO L353 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-07-23 15:38:14,356 INFO L414 AbstractCegarLoop]: === Iteration 244 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:14,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1360576646, now seen corresponding path program 243 times [2018-07-23 15:38:14,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:15,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:15,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245] total 245 [2018-07-23 15:38:15,929 INFO L450 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-07-23 15:38:15,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-07-23 15:38:15,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-23 15:38:15,932 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-07-23 15:38:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:17,871 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-07-23 15:38:17,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-07-23 15:38:17,871 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-07-23 15:38:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:17,871 INFO L225 Difference]: With dead ends: 250 [2018-07-23 15:38:17,871 INFO L226 Difference]: Without dead ends: 248 [2018-07-23 15:38:17,873 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-23 15:38:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-23 15:38:17,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-23 15:38:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-23 15:38:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-23 15:38:17,875 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-07-23 15:38:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:17,875 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-23 15:38:17,875 INFO L472 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-07-23 15:38:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-23 15:38:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-23 15:38:17,876 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:17,876 INFO L353 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-07-23 15:38:17,876 INFO L414 AbstractCegarLoop]: === Iteration 245 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:17,876 INFO L82 PathProgramCache]: Analyzing trace with hash -771798880, now seen corresponding path program 244 times [2018-07-23 15:38:17,876 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:19,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:19,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246] total 246 [2018-07-23 15:38:19,440 INFO L450 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-07-23 15:38:19,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-07-23 15:38:19,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-23 15:38:19,445 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-07-23 15:38:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:21,182 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-23 15:38:21,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-07-23 15:38:21,182 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-07-23 15:38:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:21,183 INFO L225 Difference]: With dead ends: 251 [2018-07-23 15:38:21,183 INFO L226 Difference]: Without dead ends: 249 [2018-07-23 15:38:21,186 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-23 15:38:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-23 15:38:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-23 15:38:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-23 15:38:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-23 15:38:21,188 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-07-23 15:38:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:21,188 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-23 15:38:21,188 INFO L472 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-07-23 15:38:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-23 15:38:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-23 15:38:21,189 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:21,189 INFO L353 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-07-23 15:38:21,189 INFO L414 AbstractCegarLoop]: === Iteration 246 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:21,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1844036550, now seen corresponding path program 245 times [2018-07-23 15:38:21,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:22,791 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:22,791 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247] total 247 [2018-07-23 15:38:22,791 INFO L450 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-07-23 15:38:22,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-07-23 15:38:22,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-23 15:38:22,797 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-07-23 15:38:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:23,806 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-07-23 15:38:23,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-07-23 15:38:23,806 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-07-23 15:38:23,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:23,807 INFO L225 Difference]: With dead ends: 252 [2018-07-23 15:38:23,807 INFO L226 Difference]: Without dead ends: 250 [2018-07-23 15:38:23,810 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-23 15:38:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-23 15:38:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-23 15:38:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-23 15:38:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-23 15:38:23,812 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-07-23 15:38:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:23,812 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-23 15:38:23,812 INFO L472 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-07-23 15:38:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-23 15:38:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-23 15:38:23,813 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:23,813 INFO L353 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-07-23 15:38:23,813 INFO L414 AbstractCegarLoop]: === Iteration 247 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:23,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1330556256, now seen corresponding path program 246 times [2018-07-23 15:38:23,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:25,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:25,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248] total 248 [2018-07-23 15:38:25,444 INFO L450 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-07-23 15:38:25,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-07-23 15:38:25,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-23 15:38:25,447 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-07-23 15:38:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:26,916 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-23 15:38:26,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-23 15:38:26,916 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-07-23 15:38:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:26,916 INFO L225 Difference]: With dead ends: 253 [2018-07-23 15:38:26,916 INFO L226 Difference]: Without dead ends: 251 [2018-07-23 15:38:26,919 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-23 15:38:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-23 15:38:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-23 15:38:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-23 15:38:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-23 15:38:26,921 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-07-23 15:38:26,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:26,921 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-23 15:38:26,921 INFO L472 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-07-23 15:38:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-23 15:38:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-23 15:38:26,922 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:26,922 INFO L353 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-07-23 15:38:26,922 INFO L414 AbstractCegarLoop]: === Iteration 248 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1702430970, now seen corresponding path program 247 times [2018-07-23 15:38:26,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:28,663 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:28,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249] total 249 [2018-07-23 15:38:28,663 INFO L450 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-07-23 15:38:28,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-07-23 15:38:28,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-23 15:38:28,670 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-07-23 15:38:29,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:29,355 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-07-23 15:38:29,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-07-23 15:38:29,356 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-07-23 15:38:29,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:29,356 INFO L225 Difference]: With dead ends: 254 [2018-07-23 15:38:29,356 INFO L226 Difference]: Without dead ends: 252 [2018-07-23 15:38:29,359 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-23 15:38:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-23 15:38:29,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-23 15:38:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-23 15:38:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-23 15:38:29,362 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-07-23 15:38:29,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:29,362 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-23 15:38:29,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-07-23 15:38:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-23 15:38:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-23 15:38:29,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:29,363 INFO L353 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-07-23 15:38:29,363 INFO L414 AbstractCegarLoop]: === Iteration 249 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:29,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1235754464, now seen corresponding path program 248 times [2018-07-23 15:38:29,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:31,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:31,012 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250] total 250 [2018-07-23 15:38:31,012 INFO L450 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-07-23 15:38:31,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-07-23 15:38:31,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-23 15:38:31,018 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-07-23 15:38:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:32,602 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-23 15:38:32,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-07-23 15:38:32,602 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-07-23 15:38:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:32,602 INFO L225 Difference]: With dead ends: 255 [2018-07-23 15:38:32,602 INFO L226 Difference]: Without dead ends: 253 [2018-07-23 15:38:32,605 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-23 15:38:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-23 15:38:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-23 15:38:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-23 15:38:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-23 15:38:32,608 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-07-23 15:38:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:32,608 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-23 15:38:32,608 INFO L472 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-07-23 15:38:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-23 15:38:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-23 15:38:32,609 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:32,609 INFO L353 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-07-23 15:38:32,609 INFO L414 AbstractCegarLoop]: === Iteration 250 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:32,609 INFO L82 PathProgramCache]: Analyzing trace with hash 346315334, now seen corresponding path program 249 times [2018-07-23 15:38:32,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:34,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:34,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251] total 251 [2018-07-23 15:38:34,272 INFO L450 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-07-23 15:38:34,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-07-23 15:38:34,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-23 15:38:34,275 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-07-23 15:38:35,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:35,013 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-07-23 15:38:35,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-07-23 15:38:35,013 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-07-23 15:38:35,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:35,014 INFO L225 Difference]: With dead ends: 256 [2018-07-23 15:38:35,014 INFO L226 Difference]: Without dead ends: 254 [2018-07-23 15:38:35,015 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-23 15:38:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-23 15:38:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-23 15:38:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-23 15:38:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-23 15:38:35,018 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-07-23 15:38:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:35,018 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-23 15:38:35,018 INFO L472 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-07-23 15:38:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-23 15:38:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-23 15:38:35,019 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:35,019 INFO L353 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-07-23 15:38:35,019 INFO L414 AbstractCegarLoop]: === Iteration 251 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:35,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2145838816, now seen corresponding path program 250 times [2018-07-23 15:38:35,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:36,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:36,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252] total 252 [2018-07-23 15:38:36,706 INFO L450 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-07-23 15:38:36,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-07-23 15:38:36,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-23 15:38:36,712 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-07-23 15:38:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:39,028 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-23 15:38:39,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-07-23 15:38:39,028 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-07-23 15:38:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:39,029 INFO L225 Difference]: With dead ends: 257 [2018-07-23 15:38:39,029 INFO L226 Difference]: Without dead ends: 255 [2018-07-23 15:38:39,033 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-23 15:38:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-23 15:38:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-23 15:38:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-23 15:38:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-23 15:38:39,036 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-07-23 15:38:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:39,036 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-23 15:38:39,036 INFO L472 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-07-23 15:38:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-23 15:38:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-23 15:38:39,037 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:39,037 INFO L353 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-07-23 15:38:39,037 INFO L414 AbstractCegarLoop]: === Iteration 252 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:39,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2096491910, now seen corresponding path program 251 times [2018-07-23 15:38:39,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:40,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:40,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253] total 253 [2018-07-23 15:38:40,750 INFO L450 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-07-23 15:38:40,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-07-23 15:38:40,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-23 15:38:40,756 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. [2018-07-23 15:38:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:41,510 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-07-23 15:38:41,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-07-23 15:38:41,510 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 254 [2018-07-23 15:38:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:41,511 INFO L225 Difference]: With dead ends: 258 [2018-07-23 15:38:41,511 INFO L226 Difference]: Without dead ends: 256 [2018-07-23 15:38:41,514 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-23 15:38:41,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-23 15:38:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-23 15:38:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-23 15:38:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-23 15:38:41,516 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-07-23 15:38:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:41,516 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-23 15:38:41,516 INFO L472 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-07-23 15:38:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-23 15:38:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-23 15:38:41,517 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:41,517 INFO L353 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-07-23 15:38:41,518 INFO L414 AbstractCegarLoop]: === Iteration 253 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:41,518 INFO L82 PathProgramCache]: Analyzing trace with hash 566737824, now seen corresponding path program 252 times [2018-07-23 15:38:41,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:38:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:38:43,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:38:43,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [254] total 254 [2018-07-23 15:38:43,221 INFO L450 AbstractCegarLoop]: Interpolant automaton has 255 states [2018-07-23 15:38:43,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2018-07-23 15:38:43,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32385, Invalid=32385, Unknown=0, NotChecked=0, Total=64770 [2018-07-23 15:38:43,226 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 255 states. [2018-07-23 15:38:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:38:45,182 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-23 15:38:45,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2018-07-23 15:38:45,182 INFO L78 Accepts]: Start accepts. Automaton has 255 states. Word has length 255 [2018-07-23 15:38:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:38:45,182 INFO L225 Difference]: With dead ends: 259 [2018-07-23 15:38:45,182 INFO L226 Difference]: Without dead ends: 257 [2018-07-23 15:38:45,184 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32385, Invalid=32385, Unknown=0, NotChecked=0, Total=64770 [2018-07-23 15:38:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-23 15:38:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-23 15:38:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-23 15:38:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-23 15:38:45,187 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 255 [2018-07-23 15:38:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:38:45,187 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-23 15:38:45,187 INFO L472 AbstractCegarLoop]: Interpolant automaton has 255 states. [2018-07-23 15:38:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-23 15:38:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-23 15:38:45,188 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:38:45,188 INFO L353 BasicCegarLoop]: trace histogram [253, 1, 1, 1] [2018-07-23 15:38:45,188 INFO L414 AbstractCegarLoop]: === Iteration 254 === [mainErr0AssertViolationASSERT]=== [2018-07-23 15:38:45,188 INFO L82 PathProgramCache]: Analyzing trace with hash 389001414, now seen corresponding path program 253 times [2018-07-23 15:38:45,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:38:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-23 15:38:45,998 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:38:46,002 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:38:46,003 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:38:46 BoogieIcfgContainer [2018-07-23 15:38:46,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:38:46,004 INFO L168 Benchmark]: Toolchain (without parser) took 258639.39 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -93.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-23 15:38:46,005 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:38:46,005 INFO L168 Benchmark]: Boogie Preprocessor took 58.43 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. [2018-07-23 15:38:46,005 INFO L168 Benchmark]: RCFGBuilder took 223.64 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. [2018-07-23 15:38:46,006 INFO L168 Benchmark]: TraceAbstraction took 258351.43 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -104.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-23 15:38:46,007 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.43 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 223.64 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 258351.43 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -104.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 21). Cancelled while BasicCegarLoop was analyzing trace of length 257 with TraceHistMax 253, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 151 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 258.2s OverallTime, 254 OverallIterations, 253 TraceHistogramMax, 99.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 760 SDtfs, 0 SDslu, 16756 SDs, 0 SdLazy, 49139 SolverSat, 480 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32384 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 32131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 119.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=253, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 253 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 24.2s SatisfiabilityAnalysisTime, 128.3s InterpolantComputationTime, 32637 NumberOfCodeBlocks, 32637 NumberOfCodeBlocksAsserted, 253 NumberOfCheckSat, 32384 ConstructedInterpolants, 0 QuantifiedInterpolants, 16419194 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 253 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2699004 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/codeblockAssertOrder01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-38-46-014.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/codeblockAssertOrder01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-38-46-014.csv Completed graceful shutdown