java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/NeonAngel01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:54:30,846 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:54:30,849 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:54:30,865 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:54:30,865 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:54:30,866 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:54:30,868 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:54:30,870 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:54:30,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:54:30,872 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:54:30,873 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:54:30,873 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:54:30,874 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:54:30,875 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:54:30,876 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:54:30,877 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:54:30,878 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:54:30,880 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:54:30,881 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:54:30,883 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:54:30,884 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:54:30,885 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:54:30,888 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:54:30,888 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:54:30,888 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:54:30,889 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:54:30,890 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:54:30,891 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:54:30,892 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:54:30,893 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:54:30,893 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:54:30,894 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:54:30,897 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:54:30,925 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:54:30,925 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:54:30,927 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:54:30,927 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:54:30,928 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:54:30,928 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:54:30,928 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:54:30,928 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:54:30,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:54:31,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:54:31,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:54:31,015 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:54:31,015 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:54:31,016 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/NeonAngel01.bpl [2018-07-25 08:54:31,016 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/NeonAngel01.bpl' [2018-07-25 08:54:31,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:54:31,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:54:31,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:54:31,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:54:31,067 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:54:31,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,109 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:54:31,109 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:54:31,110 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:54:31,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:54:31,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:54:31,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:54:31,113 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:54:31,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:54:31,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:54:31,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:54:31,140 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:54:31,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/1) ... [2018-07-25 08:54:31,231 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-25 08:54:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 08:54:31,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 08:54:31,368 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:54:31,370 INFO L202 PluginConnector]: Adding new model NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:54:31 BoogieIcfgContainer [2018-07-25 08:54:31,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:54:31,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:54:31,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:54:31,375 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:54:31,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:31" (1/2) ... [2018-07-25 08:54:31,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43237a88 and model type NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:54:31, skipping insertion in model container [2018-07-25 08:54:31,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:54:31" (2/2) ... [2018-07-25 08:54:31,380 INFO L112 eAbstractionObserver]: Analyzing ICFG NeonAngel01.bpl [2018-07-25 08:54:31,391 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:54:31,403 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:54:31,456 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:54:31,457 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:54:31,457 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:54:31,458 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:54:31,458 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:54:31,458 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:54:31,458 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:54:31,458 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:54:31,459 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:54:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:54:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:54:31,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,488 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:54:31,489 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,495 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-07-25 08:54:31,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:31,590 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:54:31,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:54:31,596 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:54:31,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:54:31,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:54:31,618 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:54:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,651 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-07-25 08:54:31,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:54:31,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:54:31,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,664 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:54:31,664 INFO L226 Difference]: Without dead ends: 5 [2018-07-25 08:54:31,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:54:31,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-25 08:54:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-25 08:54:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-25 08:54:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-25 08:54:31,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-25 08:54:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,713 INFO L472 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-25 08:54:31,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:54:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-25 08:54:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:54:31,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,714 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:54:31,715 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,715 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-07-25 08:54:31,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:31,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:54:31,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:54:31,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:54:31,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:54:31,763 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-25 08:54:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,789 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-25 08:54:31,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:54:31,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:54:31,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,792 INFO L225 Difference]: With dead ends: 8 [2018-07-25 08:54:31,792 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 08:54:31,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:54:31,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 08:54:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 08:54:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:54:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:54:31,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-25 08:54:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,798 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:54:31,799 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:54:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:54:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:54:31,800 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,801 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:54:31,801 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-07-25 08:54:31,801 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:31,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:54:31,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:54:31,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:54:31,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:54:31,839 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-07-25 08:54:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,850 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:54:31,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:54:31,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-25 08:54:31,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,853 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:54:31,854 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:54:31,854 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:54:31,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:54:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:54:31,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:54:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:54:31,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-25 08:54:31,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,857 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:54:31,858 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:54:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:54:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:54:31,861 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,862 INFO L354 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-07-25 08:54:31,862 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-07-25 08:54:31,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:31,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:31,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:54:31,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:54:31,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:54:31,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:54:31,919 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 08:54:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:31,939 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-25 08:54:31,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:54:31,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 08:54:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:31,940 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:54:31,940 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:54:31,941 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:54:31,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:54:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:54:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:54:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:54:31,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-07-25 08:54:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:31,945 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:54:31,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:54:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:54:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:54:31,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:31,946 INFO L354 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-07-25 08:54:31,947 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:31,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-07-25 08:54:31,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:54:32,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:54:32,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:54:32,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:54:32,002 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-25 08:54:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,015 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:54:32,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:54:32,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 08:54:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,016 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:54:32,016 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:54:32,017 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:54:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:54:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:54:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:54:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:54:32,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-07-25 08:54:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,022 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:54:32,023 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:54:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:54:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:54:32,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,026 INFO L354 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-07-25 08:54:32,026 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-07-25 08:54:32,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:54:32,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:54:32,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:54:32,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:54:32,103 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-07-25 08:54:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,129 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:54:32,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:54:32,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-25 08:54:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,130 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:54:32,131 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:54:32,133 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:54:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:54:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:54:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:54:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:54:32,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-07-25 08:54:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,141 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:54:32,141 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:54:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:54:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:54:32,142 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,142 INFO L354 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-07-25 08:54:32,142 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-07-25 08:54:32,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:54:32,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:54:32,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:54:32,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:54:32,236 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-07-25 08:54:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,257 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:54:32,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:54:32,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-07-25 08:54:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,258 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:54:32,258 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:54:32,259 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:54:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:54:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:54:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:54:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:54:32,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-07-25 08:54:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,269 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:54:32,270 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:54:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:54:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:54:32,273 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,274 INFO L354 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-07-25 08:54:32,274 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-07-25 08:54:32,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:54:32,312 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:54:32,314 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:54:32,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:54:32,317 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-07-25 08:54:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,331 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 08:54:32,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:54:32,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-07-25 08:54:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,332 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:54:32,333 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:54:32,333 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:54:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:54:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:54:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:54:32,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:54:32,337 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-25 08:54:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,337 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:54:32,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:54:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:54:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:54:32,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,338 INFO L354 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-07-25 08:54:32,339 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-07-25 08:54:32,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:54:32,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:54:32,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:54:32,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:54:32,380 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-07-25 08:54:32,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,404 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:54:32,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:54:32,404 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-07-25 08:54:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,405 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:54:32,405 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:54:32,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:54:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:54:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:54:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:54:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:54:32,414 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-07-25 08:54:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,414 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:54:32,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:54:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:54:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:54:32,416 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,416 INFO L354 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-07-25 08:54:32,416 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-07-25 08:54:32,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,498 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:54:32,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:54:32,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:54:32,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:54:32,499 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-07-25 08:54:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,521 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 08:54:32,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:54:32,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-07-25 08:54:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,523 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:54:32,523 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:54:32,523 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:54:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:54:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:54:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:54:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:54:32,527 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-07-25 08:54:32,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,528 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:54:32,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:54:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:54:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:54:32,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,529 INFO L354 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-07-25 08:54:32,529 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,529 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-07-25 08:54:32,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,573 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:54:32,574 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:54:32,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:54:32,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:54:32,575 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-25 08:54:32,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,585 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:54:32,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:54:32,586 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-25 08:54:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,586 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:54:32,586 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:54:32,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:54:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:54:32,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:54:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:54:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:54:32,591 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-07-25 08:54:32,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,591 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:54:32,591 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:54:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:54:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:54:32,592 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,592 INFO L354 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-07-25 08:54:32,593 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,593 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-07-25 08:54:32,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,637 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:54:32,638 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:54:32,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:54:32,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:54:32,639 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-07-25 08:54:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,663 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 08:54:32,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:54:32,663 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-07-25 08:54:32,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,664 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:54:32,667 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:54:32,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:54:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:54:32,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:54:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:54:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:54:32,674 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-07-25 08:54:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,675 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:54:32,675 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:54:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:54:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:54:32,676 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,676 INFO L354 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-07-25 08:54:32,677 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,677 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-07-25 08:54:32,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:54:32,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:54:32,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:54:32,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:54:32,732 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-07-25 08:54:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,756 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:54:32,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:54:32,757 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-07-25 08:54:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,759 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:54:32,759 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:54:32,759 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:54:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:54:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:54:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:54:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:54:32,768 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-07-25 08:54:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,769 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:54:32,769 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:54:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:54:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:54:32,769 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,770 INFO L354 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-07-25 08:54:32,770 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,770 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-07-25 08:54:32,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:54:32,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:54:32,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:54:32,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:54:32,823 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-07-25 08:54:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,839 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-25 08:54:32,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:54:32,839 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-07-25 08:54:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,840 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:54:32,840 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:54:32,841 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:54:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:54:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:54:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:54:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:54:32,845 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-07-25 08:54:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,845 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:54:32,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:54:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:54:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:54:32,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,847 INFO L354 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-07-25 08:54:32,847 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,847 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-07-25 08:54:32,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,901 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:54:32,902 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:54:32,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:54:32,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:54:32,903 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-25 08:54:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,915 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:54:32,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:54:32,915 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-25 08:54:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,916 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:54:32,916 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:54:32,917 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:54:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:54:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:54:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:54:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:54:32,921 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-07-25 08:54:32,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:32,921 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:54:32,921 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:54:32,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:54:32,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:54:32,922 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:32,922 INFO L354 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-07-25 08:54:32,923 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:32,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-07-25 08:54:32,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:32,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:32,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:54:32,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:54:32,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:54:32,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:54:32,983 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-07-25 08:54:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:32,996 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 08:54:32,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:54:32,997 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-07-25 08:54:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:32,998 INFO L225 Difference]: With dead ends: 22 [2018-07-25 08:54:32,998 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:54:32,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:54:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:54:33,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:54:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:54:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:54:33,003 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-07-25 08:54:33,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,003 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:54:33,003 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:54:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:54:33,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:54:33,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,005 INFO L354 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-07-25 08:54:33,005 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-07-25 08:54:33,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:54:33,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:54:33,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:54:33,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:54:33,072 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-07-25 08:54:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,086 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:54:33,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:54:33,086 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-07-25 08:54:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,087 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:54:33,087 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:54:33,088 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:54:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:54:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:54:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:54:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:54:33,092 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-07-25 08:54:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,092 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:54:33,092 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:54:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:54:33,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:54:33,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,094 INFO L354 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-07-25 08:54:33,094 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,094 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-07-25 08:54:33,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:54:33,162 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:54:33,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:54:33,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:54:33,163 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-07-25 08:54:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,178 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-25 08:54:33,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:54:33,178 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-07-25 08:54:33,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,179 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:54:33,179 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:54:33,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:54:33,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:54:33,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:54:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:54:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:54:33,183 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-07-25 08:54:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,184 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:54:33,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:54:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:54:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:54:33,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,185 INFO L354 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-07-25 08:54:33,185 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,185 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-07-25 08:54:33,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:54:33,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:54:33,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:54:33,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:54:33,258 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-07-25 08:54:33,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,272 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:54:33,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:54:33,272 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-07-25 08:54:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,273 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:54:33,273 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:54:33,274 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:54:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:54:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:54:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:54:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:54:33,278 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-07-25 08:54:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,278 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:54:33,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:54:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:54:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:54:33,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,279 INFO L354 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-07-25 08:54:33,280 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,280 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-07-25 08:54:33,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,357 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:54:33,358 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:54:33,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:54:33,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:54:33,359 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-07-25 08:54:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,372 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-25 08:54:33,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:54:33,372 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-07-25 08:54:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,373 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:54:33,373 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:54:33,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:54:33,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:54:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:54:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:54:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:54:33,378 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-07-25 08:54:33,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,378 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:54:33,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:54:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:54:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:54:33,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,379 INFO L354 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-07-25 08:54:33,379 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-07-25 08:54:33,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:54:33,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:54:33,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:54:33,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:54:33,467 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-07-25 08:54:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,492 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:54:33,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:54:33,492 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-07-25 08:54:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,493 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:54:33,493 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:54:33,495 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:54:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:54:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:54:33,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:54:33,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:54:33,500 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-07-25 08:54:33,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,500 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:54:33,501 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:54:33,501 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:54:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:54:33,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,504 INFO L354 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-07-25 08:54:33,504 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-07-25 08:54:33,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:54:33,607 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:54:33,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:54:33,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:54:33,608 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-07-25 08:54:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,633 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-25 08:54:33,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:54:33,633 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-07-25 08:54:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,634 INFO L225 Difference]: With dead ends: 28 [2018-07-25 08:54:33,635 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:54:33,635 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:54:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:54:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:54:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:54:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:54:33,648 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-07-25 08:54:33,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,649 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:54:33,649 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:54:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:54:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:54:33,650 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,650 INFO L354 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-07-25 08:54:33,651 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,651 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-07-25 08:54:33,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,755 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:54:33,755 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:54:33,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:54:33,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:54:33,756 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-07-25 08:54:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,778 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:54:33,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:54:33,779 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-07-25 08:54:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,779 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:54:33,779 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:54:33,780 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:54:33,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:54:33,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:54:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:54:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:54:33,786 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-07-25 08:54:33,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,787 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:54:33,788 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:54:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:54:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:54:33,788 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,789 INFO L354 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-07-25 08:54:33,789 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,789 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-07-25 08:54:33,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:33,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:33,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:54:33,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:54:33,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:54:33,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:54:33,889 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-07-25 08:54:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:33,903 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-25 08:54:33,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:54:33,903 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-07-25 08:54:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:33,904 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:54:33,904 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:54:33,905 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:54:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:54:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:54:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:54:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:54:33,909 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-07-25 08:54:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:33,909 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:54:33,910 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:54:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:54:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:54:33,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:33,911 INFO L354 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-07-25 08:54:33,911 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:33,911 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-07-25 08:54:33,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:34,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:54:34,011 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:54:34,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:54:34,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:54:34,012 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-07-25 08:54:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,033 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:54:34,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:54:34,033 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-07-25 08:54:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,034 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:54:34,034 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:54:34,035 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:54:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:54:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:54:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:54:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:54:34,042 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-07-25 08:54:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,042 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:54:34,042 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:54:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:54:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:54:34,043 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,043 INFO L354 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-07-25 08:54:34,044 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,044 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-07-25 08:54:34,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:34,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:54:34,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:54:34,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:54:34,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:54:34,169 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-07-25 08:54:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,193 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-25 08:54:34,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:54:34,194 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-07-25 08:54:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,194 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:54:34,198 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:54:34,199 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:54:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:54:34,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:54:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:54:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:54:34,204 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-07-25 08:54:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,205 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:54:34,205 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:54:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:54:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:54:34,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,206 INFO L354 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-07-25 08:54:34,206 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-07-25 08:54:34,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:34,326 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:54:34,327 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:54:34,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:54:34,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:54:34,328 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-07-25 08:54:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,349 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:54:34,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:54:34,349 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-07-25 08:54:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,350 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:54:34,350 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:54:34,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:54:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:54:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:54:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:54:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:54:34,359 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-07-25 08:54:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,359 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:54:34,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:54:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:54:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:54:34,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,361 INFO L354 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-07-25 08:54:34,362 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-07-25 08:54:34,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:34,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:54:34,493 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:54:34,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:54:34,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:54:34,495 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-07-25 08:54:34,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,513 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-25 08:54:34,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:54:34,513 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-07-25 08:54:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,514 INFO L225 Difference]: With dead ends: 34 [2018-07-25 08:54:34,514 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:54:34,515 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:54:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:54:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:54:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:54:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:54:34,519 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-07-25 08:54:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,520 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:54:34,520 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:54:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:54:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:54:34,521 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,521 INFO L354 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-07-25 08:54:34,521 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-07-25 08:54:34,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:34,655 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,655 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:54:34,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:54:34,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:54:34,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:54:34,657 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-07-25 08:54:34,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,673 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:54:34,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:54:34,673 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-07-25 08:54:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,674 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:54:34,674 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:54:34,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:54:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:54:34,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:54:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:54:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:54:34,681 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-07-25 08:54:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,681 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:54:34,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:54:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:54:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:54:34,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,682 INFO L354 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-07-25 08:54:34,682 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,683 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-07-25 08:54:34,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:34,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:34,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:54:34,834 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:54:34,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:54:34,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:54:34,835 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-07-25 08:54:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:34,853 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-25 08:54:34,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:54:34,853 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-07-25 08:54:34,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:34,854 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:54:34,854 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:54:34,855 INFO L574 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 [2018-07-25 08:54:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:54:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:54:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:54:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:54:34,858 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-07-25 08:54:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:34,859 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 08:54:34,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:54:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:54:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:54:34,860 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:34,860 INFO L354 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-07-25 08:54:34,860 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:34,860 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-07-25 08:54:34,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:35,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:54:35,009 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:54:35,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:54:35,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:54:35,010 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-07-25 08:54:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,028 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:54:35,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:54:35,029 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-07-25 08:54:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,029 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:54:35,030 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:54:35,031 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:54:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:54:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:54:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:54:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:54:35,035 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-07-25 08:54:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:35,036 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:54:35,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:54:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:54:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:54:35,036 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:35,037 INFO L354 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-07-25 08:54:35,037 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:35,037 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-07-25 08:54:35,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:35,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:54:35,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:54:35,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:54:35,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:54:35,189 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-07-25 08:54:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,208 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-25 08:54:35,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:54:35,208 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-07-25 08:54:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,209 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:54:35,209 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:54:35,210 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:54:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:54:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:54:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:54:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:54:35,219 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-07-25 08:54:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:35,219 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:54:35,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:54:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:54:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:54:35,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:35,220 INFO L354 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-07-25 08:54:35,220 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:35,224 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-07-25 08:54:35,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:35,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:54:35,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:54:35,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:54:35,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:54:35,416 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-07-25 08:54:35,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,434 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:54:35,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:54:35,435 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-07-25 08:54:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,435 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:54:35,435 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:54:35,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:54:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:54:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:54:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:54:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:54:35,440 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-07-25 08:54:35,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:35,440 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:54:35,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:54:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:54:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:54:35,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:35,441 INFO L354 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-07-25 08:54:35,441 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-07-25 08:54:35,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:35,590 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:54:35,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:54:35,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:54:35,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:54:35,591 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-07-25 08:54:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,608 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-25 08:54:35,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:54:35,609 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-07-25 08:54:35,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,610 INFO L225 Difference]: With dead ends: 40 [2018-07-25 08:54:35,610 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:54:35,611 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:54:35,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:54:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:54:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:54:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:54:35,614 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-07-25 08:54:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:35,614 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:54:35,614 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:54:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:54:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:54:35,615 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:35,615 INFO L354 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-07-25 08:54:35,615 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:35,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-07-25 08:54:35,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:35,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:54:35,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:54:35,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:54:35,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:54:35,791 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-07-25 08:54:35,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,807 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:54:35,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:54:35,807 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-07-25 08:54:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,808 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:54:35,808 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:54:35,809 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:54:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:54:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:54:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:54:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:54:35,818 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-07-25 08:54:35,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:35,818 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:54:35,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:54:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:54:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:54:35,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:35,819 INFO L354 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-07-25 08:54:35,822 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:35,822 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-07-25 08:54:35,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:35,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:35,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:54:35,978 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:54:35,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:54:35,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:54:35,979 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-07-25 08:54:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:35,996 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-25 08:54:35,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:54:35,996 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-07-25 08:54:35,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:35,997 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:54:35,997 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:54:35,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:54:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:54:36,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:54:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:54:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:54:36,001 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-07-25 08:54:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,001 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:54:36,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:54:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:54:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:54:36,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,002 INFO L354 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-07-25 08:54:36,002 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,002 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-07-25 08:54:36,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:36,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:54:36,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:54:36,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:54:36,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:54:36,147 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-07-25 08:54:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,165 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:54:36,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:54:36,165 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-07-25 08:54:36,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,166 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:54:36,166 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:54:36,167 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:54:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:54:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:54:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:54:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:54:36,170 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-07-25 08:54:36,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,170 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:54:36,170 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:54:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:54:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:54:36,171 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,171 INFO L354 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-07-25 08:54:36,171 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-07-25 08:54:36,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:36,326 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:54:36,326 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:54:36,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:54:36,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:54:36,328 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-07-25 08:54:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,351 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-25 08:54:36,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:54:36,351 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-07-25 08:54:36,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,351 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:54:36,352 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:54:36,353 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:54:36,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:54:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:54:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:54:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:54:36,357 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-07-25 08:54:36,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,357 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:54:36,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:54:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:54:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:54:36,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,358 INFO L354 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-07-25 08:54:36,358 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-07-25 08:54:36,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:36,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:54:36,517 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:54:36,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:54:36,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:54:36,518 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-07-25 08:54:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,539 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:54:36,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:54:36,540 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-07-25 08:54:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,541 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:54:36,541 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:54:36,542 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:54:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:54:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:54:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:54:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:54:36,545 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-07-25 08:54:36,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,545 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:54:36,545 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:54:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:54:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:54:36,551 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,551 INFO L354 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-07-25 08:54:36,552 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-07-25 08:54:36,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:36,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:54:36,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:54:36,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:54:36,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:54:36,702 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-07-25 08:54:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,720 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-25 08:54:36,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:54:36,720 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-07-25 08:54:36,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,720 INFO L225 Difference]: With dead ends: 46 [2018-07-25 08:54:36,721 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:54:36,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:54:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:54:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:54:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:54:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:54:36,724 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-07-25 08:54:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,724 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:54:36,724 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:54:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:54:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:54:36,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,725 INFO L354 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-07-25 08:54:36,725 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-07-25 08:54:36,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:36,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:36,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:54:36,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:54:36,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:54:36,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:54:36,884 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-07-25 08:54:36,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:36,908 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:54:36,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:54:36,908 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-07-25 08:54:36,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:36,908 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:54:36,909 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:54:36,910 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:54:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:54:36,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:54:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:54:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:54:36,912 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-07-25 08:54:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:36,912 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:54:36,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:54:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:54:36,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:54:36,913 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:36,913 INFO L354 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-07-25 08:54:36,914 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:36,914 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-07-25 08:54:36,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:37,073 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:54:37,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:54:37,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:54:37,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:54:37,076 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-07-25 08:54:37,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:37,095 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-25 08:54:37,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:54:37,096 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-07-25 08:54:37,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:37,096 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:54:37,096 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:54:37,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:54:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:54:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:54:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:54:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:54:37,100 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-07-25 08:54:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:37,101 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:54:37,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:54:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:54:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:54:37,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:37,101 INFO L354 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-07-25 08:54:37,102 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:37,102 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-07-25 08:54:37,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:37,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:54:37,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:54:37,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:54:37,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:54:37,277 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-07-25 08:54:37,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:37,296 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:54:37,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:54:37,296 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-07-25 08:54:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:37,297 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:54:37,297 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:54:37,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:54:37,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:54:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:54:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:54:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:54:37,301 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-07-25 08:54:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:37,302 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:54:37,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:54:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:54:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:54:37,302 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:37,302 INFO L354 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-07-25 08:54:37,303 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:37,303 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-07-25 08:54:37,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:37,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:54:37,475 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:54:37,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:54:37,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:54:37,477 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-07-25 08:54:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:37,503 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-25 08:54:37,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:54:37,504 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-07-25 08:54:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:37,504 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:54:37,504 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:54:37,506 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:54:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:54:37,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:54:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:54:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:54:37,509 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-07-25 08:54:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:37,509 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:54:37,509 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:54:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:54:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:54:37,510 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:37,510 INFO L354 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-07-25 08:54:37,510 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:37,510 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-07-25 08:54:37,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:37,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:54:37,713 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:54:37,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:54:37,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:54:37,714 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-07-25 08:54:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:37,741 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:54:37,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:54:37,741 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-07-25 08:54:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:37,742 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:54:37,742 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:54:37,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:54:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:54:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:54:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:54:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:54:37,746 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-07-25 08:54:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:37,747 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:54:37,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:54:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:54:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:54:37,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:37,748 INFO L354 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-07-25 08:54:37,748 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:37,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-07-25 08:54:37,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:37,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:37,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:54:37,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:54:37,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:54:37,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:54:37,975 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-07-25 08:54:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:37,998 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-25 08:54:37,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:54:37,998 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-07-25 08:54:37,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:37,999 INFO L225 Difference]: With dead ends: 52 [2018-07-25 08:54:37,999 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:54:38,000 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:54:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:54:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:54:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:54:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:54:38,003 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-07-25 08:54:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,003 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:54:38,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:54:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:54:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:54:38,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,004 INFO L354 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-07-25 08:54:38,005 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-07-25 08:54:38,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:38,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:38,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:54:38,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:54:38,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:54:38,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:54:38,170 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-07-25 08:54:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,194 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:54:38,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:54:38,194 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-07-25 08:54:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,194 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:54:38,195 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:54:38,196 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:54:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:54:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:54:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:54:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:54:38,198 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-07-25 08:54:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,198 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:54:38,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:54:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:54:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:54:38,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,199 INFO L354 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-07-25 08:54:38,199 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-07-25 08:54:38,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:38,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:38,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:54:38,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:54:38,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:54:38,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:54:38,376 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-07-25 08:54:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,400 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-25 08:54:38,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:54:38,400 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-07-25 08:54:38,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,401 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:54:38,401 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:54:38,402 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:54:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:54:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:54:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:54:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:54:38,406 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-07-25 08:54:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,407 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:54:38,407 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:54:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:54:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:54:38,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,407 INFO L354 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-07-25 08:54:38,408 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-07-25 08:54:38,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:38,592 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:38,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:54:38,593 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:54:38,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:54:38,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:54:38,594 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-07-25 08:54:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,621 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:54:38,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:54:38,621 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-07-25 08:54:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,622 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:54:38,622 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:54:38,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:54:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:54:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:54:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:54:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:54:38,626 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-07-25 08:54:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,627 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:54:38,627 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:54:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:54:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:54:38,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,627 INFO L354 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-07-25 08:54:38,628 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-07-25 08:54:38,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:38,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:38,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:54:38,830 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:54:38,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:54:38,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:54:38,832 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-07-25 08:54:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:38,861 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-25 08:54:38,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:54:38,861 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-07-25 08:54:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:38,862 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:54:38,862 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:54:38,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:54:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:54:38,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:54:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:54:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:54:38,866 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-07-25 08:54:38,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:38,866 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:54:38,866 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:54:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:54:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:54:38,867 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:38,867 INFO L354 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-07-25 08:54:38,867 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:38,867 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-07-25 08:54:38,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:39,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:54:39,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:54:39,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:54:39,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:54:39,072 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-07-25 08:54:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,109 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:54:39,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:54:39,109 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-07-25 08:54:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,110 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:54:39,110 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:54:39,111 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:54:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:54:39,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:54:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:54:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:54:39,118 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-07-25 08:54:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,119 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:54:39,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:54:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:54:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:54:39,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,120 INFO L354 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-07-25 08:54:39,120 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-07-25 08:54:39,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:39,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:54:39,338 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:54:39,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:54:39,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:54:39,340 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-07-25 08:54:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,365 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-25 08:54:39,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:54:39,366 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-07-25 08:54:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,366 INFO L225 Difference]: With dead ends: 58 [2018-07-25 08:54:39,366 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:54:39,367 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:54:39,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:54:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:54:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:54:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:54:39,371 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-07-25 08:54:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,371 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:54:39,371 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:54:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:54:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:54:39,372 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,372 INFO L354 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-07-25 08:54:39,372 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-07-25 08:54:39,373 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:39,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:54:39,592 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:54:39,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:54:39,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:54:39,594 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-07-25 08:54:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,627 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:54:39,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:54:39,627 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-07-25 08:54:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,628 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:54:39,628 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:54:39,629 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:54:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:54:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:54:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:54:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:54:39,632 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-07-25 08:54:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,632 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:54:39,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:54:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:54:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:54:39,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,633 INFO L354 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-07-25 08:54:39,633 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-07-25 08:54:39,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:39,859 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:39,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:54:39,859 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:54:39,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:54:39,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:54:39,861 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-07-25 08:54:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:39,896 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-25 08:54:39,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:54:39,897 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-07-25 08:54:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:39,897 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:54:39,898 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:54:39,899 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:54:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:54:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:54:39,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:54:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:54:39,902 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-07-25 08:54:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:39,903 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:54:39,903 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:54:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:54:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:54:39,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:39,904 INFO L354 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-07-25 08:54:39,904 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:39,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-07-25 08:54:39,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:40,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:40,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:54:40,118 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:54:40,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:54:40,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:54:40,119 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-07-25 08:54:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:40,153 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:54:40,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:54:40,153 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-07-25 08:54:40,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:40,153 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:54:40,154 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:54:40,155 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:54:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:54:40,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:54:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:54:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:54:40,157 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-07-25 08:54:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:40,157 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:54:40,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:54:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:54:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:54:40,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:40,158 INFO L354 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-07-25 08:54:40,158 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:40,159 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-07-25 08:54:40,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:40,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:40,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:54:40,422 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:54:40,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:54:40,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:54:40,424 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-07-25 08:54:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:40,456 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-25 08:54:40,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:54:40,457 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-07-25 08:54:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:40,457 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:54:40,458 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:54:40,459 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:54:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:54:40,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:54:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:54:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:54:40,463 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-07-25 08:54:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:40,464 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:54:40,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:54:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:54:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:54:40,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:40,465 INFO L354 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-07-25 08:54:40,465 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:40,466 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-07-25 08:54:40,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:40,785 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:40,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:54:40,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:54:40,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:54:40,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:54:40,788 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-07-25 08:54:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:40,830 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:54:40,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:54:40,831 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-07-25 08:54:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:40,831 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:54:40,831 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:54:40,833 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:54:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:54:40,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:54:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:54:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:54:40,836 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-07-25 08:54:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:40,836 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:54:40,836 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:54:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:54:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:54:40,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:40,837 INFO L354 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-07-25 08:54:40,837 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-07-25 08:54:40,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:41,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:54:41,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:54:41,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:54:41,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:54:41,061 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-07-25 08:54:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:41,106 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-25 08:54:41,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:54:41,106 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-07-25 08:54:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:41,107 INFO L225 Difference]: With dead ends: 64 [2018-07-25 08:54:41,107 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:54:41,108 INFO L574 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 [2018-07-25 08:54:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:54:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:54:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:54:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:54:41,111 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-07-25 08:54:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:41,112 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:54:41,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:54:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:54:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:54:41,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:41,113 INFO L354 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-07-25 08:54:41,113 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:41,113 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-07-25 08:54:41,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:41,339 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:54:41,340 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:54:41,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:54:41,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:54:41,342 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-07-25 08:54:41,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:41,386 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:54:41,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:54:41,386 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-07-25 08:54:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:41,387 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:54:41,387 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:54:41,388 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:54:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:54:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:54:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:54:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:54:41,392 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-07-25 08:54:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:41,392 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:54:41,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:54:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:54:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:54:41,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:41,393 INFO L354 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-07-25 08:54:41,393 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:41,393 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-07-25 08:54:41,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:41,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:54:41,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:54:41,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:54:41,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:54:41,627 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-07-25 08:54:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:41,668 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-25 08:54:41,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:54:41,669 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-07-25 08:54:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:41,670 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:54:41,670 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:54:41,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:54:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:54:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:54:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:54:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:54:41,674 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-07-25 08:54:41,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:41,675 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:54:41,675 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:54:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:54:41,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:54:41,675 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:41,676 INFO L354 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-07-25 08:54:41,676 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:41,676 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-07-25 08:54:41,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:41,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:41,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:54:41,909 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:54:41,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:54:41,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:54:41,911 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-07-25 08:54:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:41,951 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:54:41,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:54:41,951 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-07-25 08:54:41,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:41,952 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:54:41,952 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:54:41,954 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:54:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:54:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:54:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:54:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:54:41,958 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-07-25 08:54:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:41,958 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:54:41,958 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:54:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:54:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:54:41,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:41,959 INFO L354 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-07-25 08:54:41,959 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-07-25 08:54:41,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:42,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:42,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:54:42,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:54:42,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:54:42,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:54:42,186 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-07-25 08:54:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:42,222 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-25 08:54:42,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:54:42,222 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-07-25 08:54:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:42,223 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:54:42,223 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:54:42,225 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:54:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:54:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:54:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:54:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:54:42,228 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-07-25 08:54:42,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:42,228 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:54:42,228 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:54:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:54:42,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:54:42,229 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:42,229 INFO L354 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-07-25 08:54:42,229 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:42,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-07-25 08:54:42,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:42,457 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:42,457 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:54:42,458 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:54:42,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:54:42,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:54:42,459 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-07-25 08:54:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:42,502 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:54:42,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:54:42,503 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-07-25 08:54:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:42,504 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:54:42,504 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:54:42,504 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:54:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:54:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:54:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:54:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:54:42,508 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-07-25 08:54:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:42,508 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:54:42,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:54:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:54:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:54:42,509 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:42,509 INFO L354 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-07-25 08:54:42,509 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-07-25 08:54:42,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:42,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:42,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:54:42,746 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:54:42,746 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:54:42,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:54:42,747 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-07-25 08:54:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:42,787 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-25 08:54:42,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:54:42,787 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-07-25 08:54:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:42,788 INFO L225 Difference]: With dead ends: 70 [2018-07-25 08:54:42,788 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:54:42,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:54:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:54:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:54:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:54:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:54:42,793 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-07-25 08:54:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:42,793 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:54:42,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:54:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:54:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:54:42,794 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:42,794 INFO L354 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-07-25 08:54:42,795 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:42,795 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-07-25 08:54:42,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:43,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:43,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:54:43,038 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:54:43,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:54:43,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:54:43,039 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-07-25 08:54:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:43,092 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:54:43,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:54:43,092 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-07-25 08:54:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:43,093 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:54:43,093 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:54:43,094 INFO L574 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 [2018-07-25 08:54:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:54:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:54:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:54:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:54:43,097 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-07-25 08:54:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:43,098 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:54:43,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:54:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:54:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:54:43,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:43,099 INFO L354 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-07-25 08:54:43,099 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:43,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-07-25 08:54:43,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:43,396 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:43,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:54:43,397 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:54:43,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:54:43,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:54:43,398 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-07-25 08:54:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:43,448 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-25 08:54:43,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:54:43,449 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-07-25 08:54:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:43,449 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:54:43,450 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:54:43,450 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:54:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:54:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:54:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:54:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:54:43,454 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-07-25 08:54:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:43,454 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:54:43,455 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:54:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:54:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:54:43,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:43,456 INFO L354 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-07-25 08:54:43,456 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:43,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-07-25 08:54:43,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:43,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:43,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:54:43,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:54:43,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:54:43,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:54:43,722 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-07-25 08:54:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:43,765 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:54:43,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:54:43,765 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-07-25 08:54:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:43,766 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:54:43,766 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:54:43,767 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:54:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:54:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:54:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:54:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:54:43,769 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-07-25 08:54:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:43,770 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:54:43,770 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:54:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:54:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:54:43,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:43,771 INFO L354 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-07-25 08:54:43,771 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:43,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-07-25 08:54:43,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:43,999 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:43,999 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:54:44,000 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:54:44,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:54:44,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:54:44,001 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-07-25 08:54:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,033 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-25 08:54:44,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:54:44,033 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-07-25 08:54:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,034 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:54:44,034 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:54:44,035 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:54:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:54:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:54:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:54:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:54:44,038 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-07-25 08:54:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,039 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:54:44,039 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:54:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:54:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:54:44,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,040 INFO L354 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-07-25 08:54:44,040 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,040 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-07-25 08:54:44,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:44,262 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:54:44,262 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:54:44,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:54:44,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:54:44,264 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-07-25 08:54:44,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,305 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:54:44,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:54:44,305 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-07-25 08:54:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,306 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:54:44,306 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:54:44,307 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:54:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:54:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:54:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:54:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:54:44,310 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-07-25 08:54:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,310 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:54:44,310 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:54:44,311 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:54:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:54:44,311 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,311 INFO L354 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-07-25 08:54:44,311 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,312 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-07-25 08:54:44,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:44,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:54:44,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:54:44,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:54:44,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:54:44,515 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-07-25 08:54:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,570 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-25 08:54:44,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:54:44,571 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-07-25 08:54:44,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,571 INFO L225 Difference]: With dead ends: 76 [2018-07-25 08:54:44,571 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:54:44,572 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:54:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:54:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:54:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:54:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:54:44,575 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-07-25 08:54:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,576 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:54:44,576 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:54:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:54:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:54:44,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,577 INFO L354 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-07-25 08:54:44,577 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-07-25 08:54:44,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:44,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:54:44,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:54:44,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:54:44,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:54:44,789 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-07-25 08:54:44,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,839 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:54:44,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:54:44,839 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-07-25 08:54:44,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,840 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:54:44,840 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:54:44,841 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:54:44,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:54:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:54:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:54:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:54:44,843 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-07-25 08:54:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,844 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:54:44,844 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:54:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:54:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:54:44,845 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,845 INFO L354 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-07-25 08:54:44,845 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-07-25 08:54:44,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:54:45,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:54:45,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:54:45,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:54:45,043 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-07-25 08:54:45,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,094 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-25 08:54:45,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:54:45,094 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-07-25 08:54:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,095 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:54:45,095 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:54:45,096 INFO L574 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 [2018-07-25 08:54:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:54:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:54:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:54:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:54:45,099 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-07-25 08:54:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,100 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:54:45,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:54:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:54:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:54:45,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,101 INFO L354 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-07-25 08:54:45,101 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,101 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-07-25 08:54:45,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:54:45,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:54:45,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:54:45,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:54:45,311 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-07-25 08:54:45,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,363 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:54:45,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:54:45,363 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-07-25 08:54:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,364 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:54:45,364 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:54:45,365 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:54:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:54:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:54:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:54:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:54:45,368 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-07-25 08:54:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,368 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:54:45,368 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:54:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:54:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:54:45,369 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,369 INFO L354 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-07-25 08:54:45,369 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-07-25 08:54:45,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:54:45,588 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:54:45,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:54:45,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:54:45,590 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-07-25 08:54:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,643 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-25 08:54:45,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:54:45,643 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-07-25 08:54:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,644 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:54:45,644 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:54:45,644 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:54:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:54:45,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:54:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:54:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:54:45,647 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-07-25 08:54:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,648 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:54:45,648 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:54:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:54:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:54:45,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,649 INFO L354 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-07-25 08:54:45,649 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-07-25 08:54:45,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:54:45,895 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:54:45,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:54:45,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:54:45,897 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-07-25 08:54:45,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,952 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:54:45,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:54:45,952 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-07-25 08:54:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,953 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:54:45,953 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:54:45,954 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:54:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:54:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:54:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:54:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:54:45,956 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-07-25 08:54:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,957 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:54:45,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:54:45,957 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:54:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:54:45,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,958 INFO L354 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-07-25 08:54:45,958 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-07-25 08:54:45,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,150 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:54:46,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:54:46,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:54:46,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:54:46,152 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-07-25 08:54:46,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,209 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-25 08:54:46,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:54:46,209 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-07-25 08:54:46,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,210 INFO L225 Difference]: With dead ends: 82 [2018-07-25 08:54:46,210 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:54:46,210 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:54:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:54:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:54:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:54:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:54:46,213 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-07-25 08:54:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,213 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:54:46,213 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:54:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:54:46,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:54:46,214 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,214 INFO L354 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-07-25 08:54:46,215 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-07-25 08:54:46,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:54:46,429 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:54:46,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:54:46,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:54:46,431 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-07-25 08:54:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,468 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:54:46,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:54:46,468 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-07-25 08:54:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,469 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:54:46,469 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:54:46,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:54:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:54:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:54:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:54:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:54:46,473 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-07-25 08:54:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,473 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:54:46,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:54:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:54:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:54:46,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,474 INFO L354 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-07-25 08:54:46,474 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,474 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-07-25 08:54:46,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:54:46,678 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:54:46,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:54:46,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:54:46,679 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-07-25 08:54:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,715 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-25 08:54:46,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:54:46,715 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-07-25 08:54:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,716 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:54:46,716 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:54:46,717 INFO L574 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 [2018-07-25 08:54:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:54:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:54:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:54:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:54:46,721 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-07-25 08:54:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,721 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:54:46,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:54:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:54:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:54:46,722 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,722 INFO L354 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-07-25 08:54:46,722 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,723 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-07-25 08:54:46,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,955 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,955 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:54:46,955 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:54:46,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:54:46,957 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:54:46,957 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-07-25 08:54:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,021 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:54:47,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:54:47,021 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-07-25 08:54:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,022 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:54:47,022 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:54:47,023 INFO L574 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 [2018-07-25 08:54:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:54:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:54:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:54:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:54:47,026 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-07-25 08:54:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,026 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:54:47,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:54:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:54:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:54:47,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,027 INFO L354 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-07-25 08:54:47,027 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,028 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-07-25 08:54:47,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:54:47,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:54:47,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:54:47,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:54:47,242 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-07-25 08:54:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,311 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-25 08:54:47,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:54:47,311 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-07-25 08:54:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,312 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:54:47,312 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:54:47,313 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:54:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:54:47,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:54:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:54:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:54:47,315 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-07-25 08:54:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,316 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:54:47,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:54:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:54:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:54:47,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,317 INFO L354 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-07-25 08:54:47,317 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,317 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-07-25 08:54:47,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,580 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:54:47,580 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:54:47,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:54:47,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:54:47,582 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-07-25 08:54:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,628 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:54:47,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:54:47,628 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-07-25 08:54:47,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,629 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:54:47,629 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:54:47,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:54:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:54:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:54:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:54:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:54:47,633 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-07-25 08:54:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,634 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:54:47,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:54:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:54:47,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:54:47,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,635 INFO L354 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-07-25 08:54:47,636 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,636 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-07-25 08:54:47,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:54:48,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:54:48,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:54:48,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:54:48,012 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-07-25 08:54:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,100 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-25 08:54:48,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:54:48,100 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-07-25 08:54:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,101 INFO L225 Difference]: With dead ends: 88 [2018-07-25 08:54:48,101 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:54:48,102 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:54:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:54:48,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:54:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:54:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:54:48,115 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-07-25 08:54:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,115 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:54:48,115 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:54:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:54:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:54:48,116 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,116 INFO L354 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-07-25 08:54:48,117 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-07-25 08:54:48,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:54:48,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:54:48,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:54:48,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:54:48,389 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-07-25 08:54:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,460 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:54:48,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:54:48,460 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-07-25 08:54:48,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,461 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:54:48,461 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:54:48,462 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:54:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:54:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:54:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:54:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:54:48,465 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-07-25 08:54:48,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,465 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:54:48,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:54:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:54:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:54:48,466 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,466 INFO L354 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-07-25 08:54:48,466 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,466 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-07-25 08:54:48,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:54:48,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:54:48,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:54:48,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:54:48,721 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-07-25 08:54:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,759 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-25 08:54:48,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:54:48,759 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-07-25 08:54:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,760 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:54:48,760 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:54:48,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:54:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:54:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:54:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:54:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:54:48,764 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-07-25 08:54:48,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,764 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:54:48,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:54:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:54:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:54:48,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,765 INFO L354 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-07-25 08:54:48,765 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,766 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-07-25 08:54:48,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:54:49,007 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:54:49,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:54:49,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:54:49,008 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-07-25 08:54:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,076 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:54:49,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:54:49,076 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-07-25 08:54:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,077 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:54:49,077 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:54:49,078 INFO L574 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 [2018-07-25 08:54:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:54:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:54:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:54:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:54:49,081 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-07-25 08:54:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,081 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:54:49,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:54:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:54:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:54:49,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,082 INFO L354 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-07-25 08:54:49,082 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,082 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-07-25 08:54:49,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,318 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,318 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:54:49,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:54:49,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:54:49,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:54:49,319 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-07-25 08:54:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,357 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-25 08:54:49,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:54:49,358 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-07-25 08:54:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,358 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:54:49,358 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:54:49,359 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:54:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:54:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:54:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:54:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:54:49,362 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-07-25 08:54:49,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,362 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:54:49,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:54:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:54:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:54:49,363 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,363 INFO L354 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-07-25 08:54:49,363 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,364 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-07-25 08:54:49,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:54:49,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:54:49,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:54:49,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:54:49,647 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-07-25 08:54:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,719 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:54:49,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:54:49,719 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-07-25 08:54:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,720 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:54:49,720 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:54:49,721 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:54:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:54:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:54:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:54:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:54:49,726 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-07-25 08:54:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,727 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:54:49,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:54:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:54:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:54:49,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,728 INFO L354 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-07-25 08:54:49,728 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-07-25 08:54:49,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,998 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:54:49,998 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:54:49,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:54:50,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:54:50,000 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-07-25 08:54:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,038 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-25 08:54:50,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:54:50,038 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-07-25 08:54:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,039 INFO L225 Difference]: With dead ends: 94 [2018-07-25 08:54:50,040 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:54:50,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:54:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:54:50,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:54:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:54:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:54:50,044 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-07-25 08:54:50,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,045 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:54:50,045 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:54:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:54:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:54:50,046 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,047 INFO L354 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-07-25 08:54:50,047 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-07-25 08:54:50,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:54:50,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:54:50,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:54:50,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:54:50,346 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-07-25 08:54:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,440 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:54:50,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:54:50,440 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-07-25 08:54:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,441 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:54:50,441 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:54:50,442 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:54:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:54:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:54:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:54:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:54:50,445 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-07-25 08:54:50,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,446 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:54:50,446 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:54:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:54:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:54:50,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,447 INFO L354 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-07-25 08:54:50,447 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-07-25 08:54:50,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:54:50,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:54:50,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:54:50,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:54:50,675 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-07-25 08:54:50,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,749 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-25 08:54:50,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:54:50,749 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-07-25 08:54:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,750 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:54:50,750 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:54:50,750 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:54:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:54:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:54:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:54:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:54:50,753 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-07-25 08:54:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,754 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:54:50,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:54:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:54:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:54:50,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,755 INFO L354 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-07-25 08:54:50,755 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-07-25 08:54:50,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:54:50,975 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:54:50,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:54:50,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:54:50,976 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-07-25 08:54:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,022 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:54:51,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:54:51,022 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-07-25 08:54:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,023 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:54:51,023 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:54:51,024 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:54:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:54:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:54:51,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:54:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:54:51,027 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-07-25 08:54:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,027 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:54:51,028 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:54:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:54:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:54:51,028 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,028 INFO L354 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-07-25 08:54:51,029 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,029 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-07-25 08:54:51,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,255 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:54:51,255 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:54:51,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:54:51,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:54:51,257 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-07-25 08:54:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,318 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-25 08:54:51,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:54:51,318 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-07-25 08:54:51,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,319 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:54:51,319 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:54:51,320 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:54:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:54:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:54:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:54:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:54:51,323 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-07-25 08:54:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,323 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:54:51,323 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:54:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:54:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:54:51,324 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,324 INFO L354 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-07-25 08:54:51,324 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,324 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-07-25 08:54:51,324 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,542 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,542 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:54:51,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:54:51,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:54:51,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:54:51,544 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-07-25 08:54:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,620 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:54:51,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:54:51,620 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-07-25 08:54:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,621 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:54:51,621 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:54:51,621 INFO L574 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 [2018-07-25 08:54:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:54:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:54:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:54:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:54:51,624 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-07-25 08:54:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,625 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:54:51,625 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:54:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:54:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:54:51,625 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,625 INFO L354 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-07-25 08:54:51,626 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-07-25 08:54:51,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,827 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:54:51,827 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:54:51,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:54:51,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:54:51,828 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-07-25 08:54:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,891 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-25 08:54:51,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:54:51,892 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-07-25 08:54:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,892 INFO L225 Difference]: With dead ends: 100 [2018-07-25 08:54:51,892 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:54:51,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:54:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:54:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:54:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:54:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:54:51,895 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-07-25 08:54:51,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,896 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:54:51,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:54:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:54:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:54:51,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,896 INFO L354 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-07-25 08:54:51,896 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-07-25 08:54:51,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:54:52,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:54:52,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:54:52,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:54:52,134 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-07-25 08:54:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,182 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:54:52,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:54:52,182 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-07-25 08:54:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,183 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:54:52,183 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:54:52,184 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:54:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:54:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:54:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:54:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:54:52,186 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-07-25 08:54:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,187 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:54:52,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:54:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:54:52,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:54:52,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,187 INFO L354 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-07-25 08:54:52,188 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-07-25 08:54:52,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:54:52,527 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:54:52,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:54:52,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:54:52,529 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-07-25 08:54:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,574 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-25 08:54:52,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:54:52,575 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-07-25 08:54:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,575 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:54:52,575 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:54:52,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:54:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:54:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:54:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:54:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:54:52,578 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-07-25 08:54:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,578 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:54:52,578 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:54:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:54:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:54:52,579 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,579 INFO L354 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-07-25 08:54:52,579 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,580 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-07-25 08:54:52,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:54:52,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:54:52,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:54:52,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:54:52,780 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-07-25 08:54:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,824 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:54:52,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:54:52,824 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-07-25 08:54:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,825 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:54:52,825 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:54:52,826 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:54:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:54:52,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:54:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:54:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:54:52,828 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-07-25 08:54:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,828 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:54:52,828 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:54:52,828 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:54:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:54:52,829 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,829 INFO L354 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-07-25 08:54:52,829 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,829 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-07-25 08:54:52,829 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:54:53,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:54:53,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:54:53,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:54:53,064 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-07-25 08:54:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,116 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-25 08:54:53,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:54:53,116 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-07-25 08:54:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,117 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:54:53,117 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:54:53,118 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:54:53,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:54:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:54:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:54:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:54:53,120 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-07-25 08:54:53,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,120 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:54:53,120 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:54:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:54:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:54:53,121 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,121 INFO L354 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-07-25 08:54:53,121 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-07-25 08:54:53,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:54:53,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:54:53,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:54:53,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:54:53,368 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-07-25 08:54:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,423 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:54:53,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:54:53,423 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-07-25 08:54:53,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,424 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:54:53,424 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:54:53,425 INFO L574 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 [2018-07-25 08:54:53,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:54:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:54:53,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:54:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:54:53,428 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-07-25 08:54:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,428 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:54:53,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:54:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:54:53,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:54:53,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,429 INFO L354 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-07-25 08:54:53,429 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-07-25 08:54:53,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:54:53,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:54:53,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:54:53,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:54:53,676 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-07-25 08:54:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,722 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-25 08:54:53,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:54:53,722 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-07-25 08:54:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,723 INFO L225 Difference]: With dead ends: 106 [2018-07-25 08:54:53,723 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:54:53,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:54:53,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:54:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:54:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:54:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:54:53,726 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-07-25 08:54:53,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,726 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:54:53,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:54:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:54:53,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:54:53,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,726 INFO L354 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-07-25 08:54:53,727 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-07-25 08:54:53,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:54:53,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:54:53,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:54:53,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:54:53,965 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-07-25 08:54:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,021 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:54:54,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:54:54,021 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-07-25 08:54:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,022 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:54:54,022 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:54:54,023 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:54:54,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:54:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:54:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:54:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:54:54,026 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-07-25 08:54:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,027 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:54:54,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:54:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:54:54,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:54:54,028 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,028 INFO L354 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-07-25 08:54:54,028 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-07-25 08:54:54,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:54,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:54:54,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:54:54,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:54:54,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:54:54,522 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-07-25 08:54:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,630 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-25 08:54:54,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:54:54,630 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-07-25 08:54:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,631 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:54:54,631 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:54:54,632 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:54:54,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:54:54,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:54:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:54:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:54:54,644 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-07-25 08:54:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,645 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:54:54,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:54:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:54:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:54:54,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,646 INFO L354 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-07-25 08:54:54,646 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-07-25 08:54:54,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:55,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:54:55,003 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:54:55,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:54:55,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:54:55,004 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-07-25 08:54:55,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,104 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:54:55,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:54:55,105 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-07-25 08:54:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,105 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:54:55,105 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:54:55,106 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:54:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:54:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:54:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:54:55,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:54:55,109 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-07-25 08:54:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,110 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:54:55,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:54:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:54:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:54:55,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,110 INFO L354 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-07-25 08:54:55,110 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-07-25 08:54:55,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:55,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:54:55,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:54:55,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:54:55,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:54:55,380 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-07-25 08:54:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,492 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-25 08:54:55,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:54:55,492 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-07-25 08:54:55,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,493 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:54:55,493 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:54:55,494 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:54:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:54:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:54:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:54:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:54:55,496 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-07-25 08:54:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,497 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:54:55,497 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:54:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:54:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:54:55,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,497 INFO L354 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-07-25 08:54:55,497 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-07-25 08:54:55,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:55,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:54:55,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:54:55,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:54:55,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:54:55,790 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-07-25 08:54:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,858 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:54:55,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:54:55,858 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-07-25 08:54:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,859 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:54:55,859 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:54:55,860 INFO L574 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 [2018-07-25 08:54:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:54:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:54:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:54:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:54:55,864 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-07-25 08:54:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,864 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:54:55,864 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:54:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:54:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:54:55,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,865 INFO L354 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-07-25 08:54:55,865 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-07-25 08:54:55,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:56,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:56,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:54:56,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:54:56,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:54:56,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:54:56,168 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-07-25 08:54:56,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,222 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-25 08:54:56,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:54:56,222 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-07-25 08:54:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,223 INFO L225 Difference]: With dead ends: 112 [2018-07-25 08:54:56,223 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:54:56,224 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:54:56,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:54:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:54:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:54:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:54:56,226 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-07-25 08:54:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,227 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:54:56,227 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:54:56,227 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:54:56,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:54:56,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,228 INFO L354 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-07-25 08:54:56,228 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,228 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-07-25 08:54:56,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:56,525 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:56,525 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:54:56,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:54:56,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:54:56,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:54:56,527 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-07-25 08:54:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,641 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:54:56,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:54:56,641 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-07-25 08:54:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,641 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:54:56,641 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:54:56,642 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:54:56,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:54:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:54:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:54:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:54:56,645 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-07-25 08:54:56,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,645 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:54:56,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:54:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:54:56,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:54:56,646 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,646 INFO L354 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-07-25 08:54:56,646 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,646 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-07-25 08:54:56,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:54:57,049 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:54:57,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:54:57,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:54:57,052 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-07-25 08:54:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:57,182 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-25 08:54:57,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:54:57,183 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-07-25 08:54:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:57,183 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:54:57,183 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:54:57,185 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:54:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:54:57,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:54:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:54:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:54:57,188 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-07-25 08:54:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:57,189 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:54:57,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:54:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:54:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:54:57,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:57,190 INFO L354 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-07-25 08:54:57,190 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:57,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-07-25 08:54:57,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,524 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:54:57,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:54:57,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:54:57,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:54:57,526 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-07-25 08:54:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:57,618 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:54:57,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:54:57,618 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-07-25 08:54:57,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:57,619 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:54:57,619 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:54:57,620 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:54:57,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:54:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:54:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:54:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:54:57,622 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-07-25 08:54:57,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:57,623 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:54:57,623 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:54:57,623 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:54:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:54:57,623 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:57,624 INFO L354 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-07-25 08:54:57,624 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:57,624 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-07-25 08:54:57,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:54:57,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:54:57,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:54:57,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:54:57,935 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-07-25 08:54:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,071 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-25 08:54:58,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:54:58,071 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-07-25 08:54:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,072 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:54:58,072 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:54:58,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:54:58,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:54:58,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:54:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:54:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:54:58,077 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-07-25 08:54:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,078 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:54:58,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:54:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:54:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:54:58,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,079 INFO L354 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-07-25 08:54:58,079 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-07-25 08:54:58,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:58,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:54:58,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:54:58,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:54:58,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:54:58,415 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-07-25 08:54:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,495 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:54:58,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:54:58,495 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-07-25 08:54:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,496 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:54:58,496 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:54:58,497 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:54:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:54:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:54:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:54:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:54:58,500 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-07-25 08:54:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,501 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:54:58,501 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:54:58,501 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:54:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:54:58,502 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,502 INFO L354 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-07-25 08:54:58,502 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-07-25 08:54:58,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:58,992 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:54:58,993 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:54:58,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:54:58,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:54:58,995 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-07-25 08:54:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,161 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-25 08:54:59,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:54:59,161 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-07-25 08:54:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,161 INFO L225 Difference]: With dead ends: 118 [2018-07-25 08:54:59,162 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:54:59,163 INFO L574 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 [2018-07-25 08:54:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:54:59,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:54:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:54:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:54:59,166 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-07-25 08:54:59,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,166 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:54:59,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:54:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:54:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:54:59,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,167 INFO L354 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-07-25 08:54:59,167 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,167 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-07-25 08:54:59,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:59,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:59,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:54:59,672 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:54:59,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:54:59,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:54:59,675 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-07-25 08:54:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,786 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:54:59,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:54:59,786 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-07-25 08:54:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,786 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:54:59,787 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:54:59,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:54:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:54:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:54:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:54:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:54:59,790 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-07-25 08:54:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,790 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:54:59,791 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:54:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:54:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:54:59,791 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,791 INFO L354 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-07-25 08:54:59,791 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-07-25 08:54:59,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:00,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:00,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:55:00,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:55:00,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:55:00,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:55:00,170 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-07-25 08:55:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:00,274 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-25 08:55:00,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:55:00,274 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-07-25 08:55:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:00,275 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:55:00,275 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:55:00,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:55:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:55:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:55:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:55:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:55:00,279 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-07-25 08:55:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:00,279 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:55:00,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:55:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:55:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:55:00,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:00,280 INFO L354 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-07-25 08:55:00,280 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:00,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-07-25 08:55:00,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:00,611 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:00,611 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:55:00,612 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:55:00,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:55:00,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:55:00,613 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-07-25 08:55:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:00,722 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:55:00,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:55:00,723 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-07-25 08:55:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:00,723 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:55:00,724 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:55:00,725 INFO L574 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 [2018-07-25 08:55:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:55:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:55:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:55:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:55:00,728 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-07-25 08:55:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:00,728 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:55:00,728 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:55:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:55:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:55:00,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:00,729 INFO L354 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-07-25 08:55:00,729 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:00,729 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-07-25 08:55:00,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:01,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:55:01,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:55:01,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:55:01,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:55:01,054 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-07-25 08:55:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:01,146 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-25 08:55:01,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:55:01,146 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-07-25 08:55:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:01,147 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:55:01,147 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:55:01,147 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:55:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:55:01,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:55:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:55:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:55:01,150 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-07-25 08:55:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:01,150 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:55:01,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:55:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:55:01,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:55:01,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:01,151 INFO L354 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-07-25 08:55:01,151 INFO L415 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash -488630048, now seen corresponding path program 116 times [2018-07-25 08:55:01,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:01,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:55:01,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:55:01,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:55:01,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:55:01,451 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-07-25 08:55:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:01,572 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:55:01,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:55:01,572 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-07-25 08:55:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:01,573 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:55:01,573 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:55:01,574 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:55:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:55:01,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:55:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:55:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:55:01,576 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-07-25 08:55:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:01,576 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:55:01,576 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:55:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:55:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:55:01,577 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:01,577 INFO L354 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-07-25 08:55:01,577 INFO L415 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:01,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333830, now seen corresponding path program 117 times [2018-07-25 08:55:01,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:01,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:55:01,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:55:01,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:55:01,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:55:01,880 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-07-25 08:55:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:02,006 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-25 08:55:02,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:55:02,006 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-07-25 08:55:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:02,007 INFO L225 Difference]: With dead ends: 124 [2018-07-25 08:55:02,007 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:55:02,008 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:55:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:55:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:55:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:55:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:55:02,011 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-07-25 08:55:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:02,011 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:55:02,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:55:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:55:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:55:02,012 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:02,012 INFO L354 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-07-25 08:55:02,012 INFO L415 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:02,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164576, now seen corresponding path program 118 times [2018-07-25 08:55:02,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:02,361 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:02,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:55:02,362 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:55:02,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:55:02,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:55:02,364 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-07-25 08:55:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:02,482 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:55:02,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:55:02,483 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-07-25 08:55:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:02,483 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:55:02,483 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:55:02,485 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:55:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:55:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:55:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:55:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:55:02,489 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-07-25 08:55:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:02,489 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:55:02,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:55:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:55:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:55:02,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:02,490 INFO L354 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-07-25 08:55:02,490 INFO L415 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:02,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432762, now seen corresponding path program 119 times [2018-07-25 08:55:02,491 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:02,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:02,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:55:02,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:55:02,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:55:02,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:55:02,962 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-07-25 08:55:03,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:03,034 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-25 08:55:03,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:55:03,034 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-07-25 08:55:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:03,034 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:55:03,035 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:55:03,035 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:55:03,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:55:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:55:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:55:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:55:03,038 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-07-25 08:55:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:03,038 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:55:03,038 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:55:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:55:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:55:03,039 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:03,039 INFO L354 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-07-25 08:55:03,039 INFO L415 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:03,039 INFO L82 PathProgramCache]: Analyzing trace with hash -900681120, now seen corresponding path program 120 times [2018-07-25 08:55:03,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:03,436 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:03,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:55:03,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:55:03,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:55:03,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:55:03,438 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-07-25 08:55:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:03,585 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:55:03,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:55:03,585 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-07-25 08:55:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:03,586 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:55:03,586 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:55:03,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:55:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:55:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:55:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:55:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:55:03,590 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-07-25 08:55:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:03,591 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:55:03,591 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:55:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:55:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:55:03,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:03,591 INFO L354 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-07-25 08:55:03,592 INFO L415 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652486, now seen corresponding path program 121 times [2018-07-25 08:55:03,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:03,966 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:03,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:55:03,967 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:55:03,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:55:03,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:55:03,969 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-07-25 08:55:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:04,096 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-25 08:55:04,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:55:04,096 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-07-25 08:55:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:04,096 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:55:04,097 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:55:04,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:55:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:55:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:55:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:55:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:55:04,101 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-07-25 08:55:04,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:04,102 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:55:04,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:55:04,102 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:55:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:55:04,102 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:04,103 INFO L354 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-07-25 08:55:04,103 INFO L415 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:04,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713760, now seen corresponding path program 122 times [2018-07-25 08:55:04,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:04,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:04,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:55:04,715 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:55:04,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:55:04,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:55:04,718 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-07-25 08:55:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:05,061 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:55:05,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:55:05,062 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-07-25 08:55:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:05,062 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:55:05,062 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:55:05,064 INFO L574 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 [2018-07-25 08:55:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:55:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:55:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:55:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:55:05,067 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-07-25 08:55:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:05,067 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:55:05,067 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:55:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:55:05,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:55:05,068 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:05,068 INFO L354 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-07-25 08:55:05,069 INFO L415 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:05,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386746, now seen corresponding path program 123 times [2018-07-25 08:55:05,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:05,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:05,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:55:05,506 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:55:05,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:55:05,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:55:05,509 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-07-25 08:55:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:05,622 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-25 08:55:05,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:55:05,623 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-07-25 08:55:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:05,623 INFO L225 Difference]: With dead ends: 130 [2018-07-25 08:55:05,623 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:55:05,624 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:55:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:55:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:55:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:55:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:55:05,626 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-07-25 08:55:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:05,627 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:55:05,627 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:55:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:55:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:55:05,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:05,627 INFO L354 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-07-25 08:55:05,627 INFO L415 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:05,628 INFO L82 PathProgramCache]: Analyzing trace with hash -321352736, now seen corresponding path program 124 times [2018-07-25 08:55:05,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:06,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:06,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:55:06,056 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:55:06,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:55:06,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:55:06,057 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-07-25 08:55:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:06,231 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:55:06,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:55:06,231 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-07-25 08:55:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:06,232 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:55:06,232 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:55:06,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:55:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:55:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:55:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:55:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:55:06,236 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-07-25 08:55:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:06,236 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:55:06,236 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:55:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:55:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:55:06,237 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:06,237 INFO L354 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-07-25 08:55:06,237 INFO L415 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:06,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004090, now seen corresponding path program 125 times [2018-07-25 08:55:06,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:06,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:06,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:55:06,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:55:06,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:55:06,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:55:06,636 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-07-25 08:55:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:06,732 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-25 08:55:06,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:55:06,732 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-07-25 08:55:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:06,732 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:55:06,732 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:55:06,734 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:55:06,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:55:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:55:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:55:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:55:06,737 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-07-25 08:55:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:06,737 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:55:06,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:55:06,738 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:55:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:55:06,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:06,738 INFO L354 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-07-25 08:55:06,738 INFO L415 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:06,739 INFO L82 PathProgramCache]: Analyzing trace with hash 417542304, now seen corresponding path program 126 times [2018-07-25 08:55:06,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:07,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:07,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:55:07,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:55:07,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:55:07,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:55:07,154 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-07-25 08:55:07,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:07,399 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:55:07,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:55:07,399 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-07-25 08:55:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:07,400 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:55:07,400 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:55:07,401 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:55:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:55:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:55:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:55:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:55:07,404 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-07-25 08:55:07,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:07,404 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:55:07,405 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:55:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:55:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:55:07,405 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:07,405 INFO L354 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-07-25 08:55:07,406 INFO L415 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:07,406 INFO L82 PathProgramCache]: Analyzing trace with hash 58905670, now seen corresponding path program 127 times [2018-07-25 08:55:07,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:07,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:07,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:55:07,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:55:07,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:55:07,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:55:07,916 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-07-25 08:55:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:08,006 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-25 08:55:08,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:55:08,007 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-07-25 08:55:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:08,007 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:55:08,007 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:55:08,009 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:55:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:55:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:55:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:55:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:55:08,012 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-07-25 08:55:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:08,012 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:55:08,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:55:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:55:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:55:08,013 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:08,013 INFO L354 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-07-25 08:55:08,013 INFO L415 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:08,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071904, now seen corresponding path program 128 times [2018-07-25 08:55:08,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:08,441 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:08,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:55:08,442 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:55:08,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:55:08,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:55:08,445 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-07-25 08:55:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:08,611 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:55:08,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:55:08,612 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-07-25 08:55:08,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:08,612 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:55:08,612 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:55:08,614 INFO L574 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 [2018-07-25 08:55:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:55:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:55:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:55:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:55:08,616 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-07-25 08:55:08,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:08,617 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:55:08,617 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:55:08,617 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:55:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:55:08,617 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:08,618 INFO L354 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-07-25 08:55:08,618 INFO L415 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:08,618 INFO L82 PathProgramCache]: Analyzing trace with hash 773650310, now seen corresponding path program 129 times [2018-07-25 08:55:08,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:09,038 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:09,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:55:09,038 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:55:09,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:55:09,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:55:09,041 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-07-25 08:55:09,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:09,271 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-25 08:55:09,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:55:09,271 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-07-25 08:55:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:09,272 INFO L225 Difference]: With dead ends: 136 [2018-07-25 08:55:09,272 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:55:09,273 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:55:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:55:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:55:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:55:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:55:09,275 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-07-25 08:55:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:09,276 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:55:09,276 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:55:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:55:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:55:09,276 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:09,277 INFO L354 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-07-25 08:55:09,277 INFO L415 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:09,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648032, now seen corresponding path program 130 times [2018-07-25 08:55:09,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:09,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:09,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:55:09,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:55:09,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:55:09,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:55:09,743 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-07-25 08:55:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:09,866 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:55:09,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:55:09,866 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-07-25 08:55:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:09,866 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:55:09,866 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:55:09,867 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:55:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:55:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:55:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:55:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:55:09,869 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-07-25 08:55:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:09,869 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:55:09,870 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:55:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:55:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:55:09,870 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:09,870 INFO L354 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-07-25 08:55:09,871 INFO L415 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:09,871 INFO L82 PathProgramCache]: Analyzing trace with hash 448481990, now seen corresponding path program 131 times [2018-07-25 08:55:09,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:10,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:10,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:55:10,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:55:10,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:55:10,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:55:10,303 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-07-25 08:55:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:10,514 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-25 08:55:10,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:55:10,514 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-07-25 08:55:10,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:10,515 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:55:10,515 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:55:10,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:55:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:55:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:55:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:55:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:55:10,519 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-07-25 08:55:10,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:10,520 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:55:10,520 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:55:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:55:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:55:10,520 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:10,521 INFO L354 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-07-25 08:55:10,521 INFO L415 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:10,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035936, now seen corresponding path program 132 times [2018-07-25 08:55:10,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:11,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:11,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:55:11,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:55:11,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:55:11,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:55:11,044 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-07-25 08:55:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:11,233 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:55:11,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:55:11,233 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-07-25 08:55:11,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:11,234 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:55:11,234 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:55:11,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:55:11,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:55:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:55:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:55:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:55:11,239 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-07-25 08:55:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:11,239 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:55:11,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:55:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:55:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:55:11,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:11,240 INFO L354 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-07-25 08:55:11,240 INFO L415 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:11,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339078, now seen corresponding path program 133 times [2018-07-25 08:55:11,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:11,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:11,701 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:55:11,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:55:11,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:55:11,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:55:11,705 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-07-25 08:55:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:11,876 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-25 08:55:11,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:55:11,877 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-07-25 08:55:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:11,877 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:55:11,877 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:55:11,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:55:11,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:55:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:55:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:55:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:55:11,882 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-07-25 08:55:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:11,882 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:55:11,883 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:55:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:55:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:55:11,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:11,883 INFO L354 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-07-25 08:55:11,884 INFO L415 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:11,884 INFO L82 PathProgramCache]: Analyzing trace with hash -920132704, now seen corresponding path program 134 times [2018-07-25 08:55:11,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:12,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:12,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:55:12,470 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:55:12,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:55:12,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:55:12,473 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-07-25 08:55:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:12,706 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:55:12,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:55:12,706 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-07-25 08:55:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:12,706 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:55:12,707 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:55:12,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:55:12,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:55:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:55:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:55:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:55:12,710 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-07-25 08:55:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:12,711 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:55:12,711 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:55:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:55:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:55:12,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:12,711 INFO L354 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-07-25 08:55:12,711 INFO L415 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:12,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653382, now seen corresponding path program 135 times [2018-07-25 08:55:12,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:13,428 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:13,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:55:13,428 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:55:13,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:55:13,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:55:13,430 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-07-25 08:55:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:13,701 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-25 08:55:13,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:55:13,701 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-07-25 08:55:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:13,701 INFO L225 Difference]: With dead ends: 142 [2018-07-25 08:55:13,701 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:55:13,702 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:55:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:55:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:55:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:55:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:55:13,705 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-07-25 08:55:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:13,705 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:55:13,705 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:55:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:55:13,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:55:13,705 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:13,705 INFO L354 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-07-25 08:55:13,706 INFO L415 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:13,706 INFO L82 PathProgramCache]: Analyzing trace with hash 515610720, now seen corresponding path program 136 times [2018-07-25 08:55:13,706 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:14,175 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:14,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:55:14,176 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:55:14,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:55:14,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:55:14,178 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-07-25 08:55:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:14,291 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:55:14,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:55:14,291 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-07-25 08:55:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:14,292 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:55:14,292 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:55:14,293 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:55:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:55:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:55:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:55:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:55:14,296 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-07-25 08:55:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:14,296 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:55:14,296 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:55:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:55:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:55:14,297 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:14,297 INFO L354 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-07-25 08:55:14,297 INFO L415 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:14,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940730, now seen corresponding path program 137 times [2018-07-25 08:55:14,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:14,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:14,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:55:14,782 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:55:14,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:55:14,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:55:14,786 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-07-25 08:55:15,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:15,042 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-25 08:55:15,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:55:15,042 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-07-25 08:55:15,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:15,043 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:55:15,043 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:55:15,044 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:55:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:55:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:55:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:55:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:55:15,047 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-07-25 08:55:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:15,047 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:55:15,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:55:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:55:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:55:15,047 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:15,047 INFO L354 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-07-25 08:55:15,048 INFO L415 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:15,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539168, now seen corresponding path program 138 times [2018-07-25 08:55:15,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:15,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:15,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:55:15,547 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:55:15,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:55:15,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:55:15,550 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-07-25 08:55:15,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:15,821 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:55:15,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:55:15,822 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-07-25 08:55:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:15,822 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:55:15,822 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:55:15,823 INFO L574 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 [2018-07-25 08:55:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:55:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:55:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:55:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:55:15,826 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-07-25 08:55:15,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:15,827 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:55:15,827 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:55:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:55:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:55:15,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:15,828 INFO L354 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-07-25 08:55:15,828 INFO L415 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070086, now seen corresponding path program 139 times [2018-07-25 08:55:15,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:16,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:16,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:55:16,355 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:55:16,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:55:16,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:55:16,358 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-07-25 08:55:16,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:16,690 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-25 08:55:16,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:55:16,690 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-07-25 08:55:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:16,691 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:55:16,691 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:55:16,692 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:55:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:55:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:55:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:55:16,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:55:16,695 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-07-25 08:55:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:16,695 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:55:16,695 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:55:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:55:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:55:16,696 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:16,696 INFO L354 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-07-25 08:55:16,696 INFO L415 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:16,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406048, now seen corresponding path program 140 times [2018-07-25 08:55:16,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:17,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:17,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:55:17,446 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:55:17,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:55:17,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:55:17,448 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-07-25 08:55:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:17,686 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:55:17,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:55:17,686 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-07-25 08:55:17,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:17,687 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:55:17,687 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:55:17,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:55:17,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:55:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:55:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:55:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:55:17,690 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-07-25 08:55:17,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:17,690 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:55:17,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:55:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:55:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:55:17,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:17,691 INFO L354 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-07-25 08:55:17,691 INFO L415 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:17,691 INFO L82 PathProgramCache]: Analyzing trace with hash 112048902, now seen corresponding path program 141 times [2018-07-25 08:55:17,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:18,218 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:18,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:55:18,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:55:18,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:55:18,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:55:18,222 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-07-25 08:55:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:18,363 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-25 08:55:18,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:55:18,363 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-07-25 08:55:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:18,364 INFO L225 Difference]: With dead ends: 148 [2018-07-25 08:55:18,364 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:55:18,365 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:55:18,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:55:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:55:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:55:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:55:18,367 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-07-25 08:55:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:18,368 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:55:18,368 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:55:18,368 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:55:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:55:18,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:18,368 INFO L354 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-07-25 08:55:18,368 INFO L415 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:18,369 INFO L82 PathProgramCache]: Analyzing trace with hash -821455200, now seen corresponding path program 142 times [2018-07-25 08:55:18,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:18,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:18,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:55:18,926 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:55:18,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:55:18,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:55:18,928 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-07-25 08:55:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:19,083 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:55:19,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:55:19,083 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-07-25 08:55:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:19,084 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:55:19,084 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:55:19,085 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:55:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:55:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:55:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:55:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:55:19,088 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-07-25 08:55:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:19,088 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:55:19,088 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:55:19,088 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:55:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:55:19,088 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:19,089 INFO L354 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-07-25 08:55:19,089 INFO L415 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:19,089 INFO L82 PathProgramCache]: Analyzing trace with hash 304688710, now seen corresponding path program 143 times [2018-07-25 08:55:19,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:19,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:19,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:55:19,625 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:55:19,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:55:19,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:55:19,627 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-07-25 08:55:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:19,925 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-25 08:55:19,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:55:19,925 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-07-25 08:55:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:19,925 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:55:19,925 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:55:19,927 INFO L574 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 [2018-07-25 08:55:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:55:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:55:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:55:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:55:19,929 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-07-25 08:55:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:19,930 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:55:19,930 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:55:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:55:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:55:19,930 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:19,930 INFO L354 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-07-25 08:55:19,930 INFO L415 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:19,931 INFO L82 PathProgramCache]: Analyzing trace with hash 855411552, now seen corresponding path program 144 times [2018-07-25 08:55:19,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:20,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:20,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:55:20,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:55:20,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:55:20,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:55:20,491 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-07-25 08:55:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:20,770 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:55:20,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:55:20,770 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-07-25 08:55:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:20,771 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:55:20,771 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:55:20,772 INFO L574 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 [2018-07-25 08:55:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:55:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:55:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:55:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:55:20,774 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-07-25 08:55:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:20,774 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:55:20,774 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:55:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:55:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:55:20,775 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:20,775 INFO L354 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-07-25 08:55:20,775 INFO L415 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:20,775 INFO L82 PathProgramCache]: Analyzing trace with hash 747950470, now seen corresponding path program 145 times [2018-07-25 08:55:20,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:21,329 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:21,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:55:21,330 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:55:21,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:55:21,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:55:21,331 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-07-25 08:55:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:21,592 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-25 08:55:21,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:55:21,592 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-07-25 08:55:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:21,592 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:55:21,592 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:55:21,593 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:55:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:55:21,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:55:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:55:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:55:21,596 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-07-25 08:55:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:21,596 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:55:21,596 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:55:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:55:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:55:21,597 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:21,597 INFO L354 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-07-25 08:55:21,598 INFO L415 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:21,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1711624224, now seen corresponding path program 146 times [2018-07-25 08:55:21,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:22,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:22,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:55:22,061 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:55:22,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:55:22,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:55:22,063 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-07-25 08:55:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:22,342 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:55:22,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:55:22,342 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-07-25 08:55:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:22,343 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:55:22,343 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:55:22,344 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:55:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:55:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:55:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:55:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:55:22,347 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-07-25 08:55:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:22,347 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:55:22,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:55:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:55:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:55:22,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:22,348 INFO L354 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-07-25 08:55:22,348 INFO L415 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1520739526, now seen corresponding path program 147 times [2018-07-25 08:55:22,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:22,856 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:22,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:55:22,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:55:22,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:55:22,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:55:22,859 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-07-25 08:55:23,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:23,156 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-25 08:55:23,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:55:23,156 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-07-25 08:55:23,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:23,156 INFO L225 Difference]: With dead ends: 154 [2018-07-25 08:55:23,156 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:55:23,158 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:55:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:55:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:55:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:55:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:55:23,160 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-07-25 08:55:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:23,160 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:55:23,160 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:55:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:55:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:55:23,161 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:23,161 INFO L354 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-07-25 08:55:23,161 INFO L415 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:23,161 INFO L82 PathProgramCache]: Analyzing trace with hash -101718816, now seen corresponding path program 148 times [2018-07-25 08:55:23,161 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:23,716 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:23,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:55:23,717 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:55:23,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:55:23,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:55:23,720 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-07-25 08:55:24,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:24,128 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:55:24,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:55:24,128 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-07-25 08:55:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:24,128 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:55:24,128 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:55:24,130 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:55:24,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:55:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:55:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:55:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:55:24,132 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-07-25 08:55:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:24,133 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:55:24,133 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:55:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:55:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:55:24,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:24,133 INFO L354 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-07-25 08:55:24,133 INFO L415 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1141680134, now seen corresponding path program 149 times [2018-07-25 08:55:24,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:24,740 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:24,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:55:24,740 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:55:24,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:55:24,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:55:24,744 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-07-25 08:55:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:25,095 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-25 08:55:25,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:55:25,095 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-07-25 08:55:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:25,096 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:55:25,096 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:55:25,097 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:55:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:55:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:55:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:55:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:55:25,099 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-07-25 08:55:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:25,099 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:55:25,099 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:55:25,099 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:55:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:55:25,100 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:25,100 INFO L354 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-07-25 08:55:25,100 INFO L415 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:25,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1032341920, now seen corresponding path program 150 times [2018-07-25 08:55:25,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:25,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:25,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:55:25,746 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:55:25,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:55:25,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:55:25,747 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-07-25 08:55:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:26,051 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:55:26,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:55:26,051 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-07-25 08:55:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:26,052 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:55:26,052 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:55:26,053 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:55:26,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:55:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:55:26,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:55:26,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:55:26,055 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-07-25 08:55:26,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:26,055 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:55:26,055 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:55:26,055 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:55:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:55:26,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:26,055 INFO L354 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-07-25 08:55:26,056 INFO L415 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1937824582, now seen corresponding path program 151 times [2018-07-25 08:55:26,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:26,561 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:26,561 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:55:26,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:55:26,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:55:26,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:55:26,564 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-07-25 08:55:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:26,889 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-25 08:55:26,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:55:26,889 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-07-25 08:55:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:26,890 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:55:26,890 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:55:26,891 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:55:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:55:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:55:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:55:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:55:26,893 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-07-25 08:55:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:26,894 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:55:26,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:55:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:55:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:55:26,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:26,894 INFO L354 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-07-25 08:55:26,894 INFO L415 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:26,895 INFO L82 PathProgramCache]: Analyzing trace with hash -56983968, now seen corresponding path program 152 times [2018-07-25 08:55:26,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:27,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:27,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:55:27,407 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:55:27,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:55:27,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:55:27,410 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-07-25 08:55:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:27,737 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:55:27,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:55:27,737 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-07-25 08:55:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:27,737 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:55:27,737 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:55:27,739 INFO L574 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 [2018-07-25 08:55:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:55:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:55:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:55:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:55:27,742 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-07-25 08:55:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:27,742 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:55:27,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:55:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:55:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:55:27,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:27,743 INFO L354 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-07-25 08:55:27,743 INFO L415 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:27,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1766506874, now seen corresponding path program 153 times [2018-07-25 08:55:27,743 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:28,276 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:28,276 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:55:28,276 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:55:28,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:55:28,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:55:28,279 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-07-25 08:55:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:28,625 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-25 08:55:28,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:55:28,626 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-07-25 08:55:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:28,626 INFO L225 Difference]: With dead ends: 160 [2018-07-25 08:55:28,626 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:55:28,628 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:55:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:55:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:55:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:55:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:55:28,630 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-07-25 08:55:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:28,630 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:55:28,630 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:55:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:55:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:55:28,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:28,631 INFO L354 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-07-25 08:55:28,631 INFO L415 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:28,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1072857888, now seen corresponding path program 154 times [2018-07-25 08:55:28,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:29,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:29,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:55:29,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:55:29,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:55:29,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:55:29,289 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-07-25 08:55:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:29,690 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:55:29,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:55:29,690 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-07-25 08:55:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:29,691 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:55:29,691 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:55:29,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:55:29,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:55:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:55:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:55:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:55:29,695 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-07-25 08:55:29,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:29,696 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:55:29,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:55:29,696 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:55:29,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:55:29,696 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:29,696 INFO L354 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-07-25 08:55:29,696 INFO L415 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:29,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1101147706, now seen corresponding path program 155 times [2018-07-25 08:55:29,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:30,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:30,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:55:30,355 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:55:30,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:55:30,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:55:30,358 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-07-25 08:55:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:30,583 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-25 08:55:30,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:55:30,584 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-07-25 08:55:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:30,584 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:55:30,584 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:55:30,585 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:55:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:55:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:55:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:55:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:55:30,588 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-07-25 08:55:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:30,588 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:55:30,588 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:55:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:55:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:55:30,588 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:30,588 INFO L354 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-07-25 08:55:30,589 INFO L415 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:30,589 INFO L82 PathProgramCache]: Analyzing trace with hash 224155616, now seen corresponding path program 156 times [2018-07-25 08:55:30,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:31,217 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:31,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:55:31,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:55:31,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:55:31,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:55:31,222 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-07-25 08:55:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:31,385 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:55:31,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:55:31,385 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-07-25 08:55:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:31,385 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:55:31,385 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:55:31,387 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:55:31,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:55:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:55:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:55:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:55:31,389 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-07-25 08:55:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:31,389 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:55:31,389 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:55:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:55:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:55:31,390 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:31,390 INFO L354 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-07-25 08:55:31,390 INFO L415 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:31,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1641114362, now seen corresponding path program 157 times [2018-07-25 08:55:31,390 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:32,007 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:32,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:55:32,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:55:32,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:55:32,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:55:32,012 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-07-25 08:55:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:32,301 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-25 08:55:32,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:55:32,301 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-07-25 08:55:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:32,302 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:55:32,302 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:55:32,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:55:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:55:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:55:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:55:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:55:32,306 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-07-25 08:55:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:32,306 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:55:32,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:55:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:55:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:55:32,306 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:32,306 INFO L354 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-07-25 08:55:32,307 INFO L415 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:32,307 INFO L82 PathProgramCache]: Analyzing trace with hash 665058464, now seen corresponding path program 158 times [2018-07-25 08:55:32,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:32,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:32,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:55:32,947 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:55:32,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:55:32,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:55:32,951 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-07-25 08:55:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:33,523 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:55:33,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:55:33,524 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-07-25 08:55:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:33,524 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:55:33,524 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:55:33,526 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:55:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:55:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:55:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:55:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:55:33,529 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-07-25 08:55:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:33,529 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:55:33,529 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:55:33,529 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:55:33,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:55:33,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:33,530 INFO L354 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-07-25 08:55:33,530 INFO L415 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:33,530 INFO L82 PathProgramCache]: Analyzing trace with hash -858027962, now seen corresponding path program 159 times [2018-07-25 08:55:33,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:34,226 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:34,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:55:34,227 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:55:34,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:55:34,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:55:34,231 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-07-25 08:55:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:34,769 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-25 08:55:34,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:55:34,770 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-07-25 08:55:34,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:34,770 INFO L225 Difference]: With dead ends: 166 [2018-07-25 08:55:34,770 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:55:34,802 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:55:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:55:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:55:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:55:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:55:34,810 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-07-25 08:55:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:34,811 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:55:34,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:55:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:55:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:55:34,811 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:34,811 INFO L354 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-07-25 08:55:34,812 INFO L415 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:34,812 INFO L82 PathProgramCache]: Analyzing trace with hash -829066912, now seen corresponding path program 160 times [2018-07-25 08:55:34,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:35,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:35,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:55:35,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:55:35,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:55:35,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:55:35,534 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-07-25 08:55:36,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:36,007 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:55:36,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:55:36,007 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-07-25 08:55:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:36,008 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:55:36,008 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:55:36,010 INFO L574 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 [2018-07-25 08:55:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:55:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:55:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:55:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:55:36,012 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-07-25 08:55:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:36,012 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:55:36,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:55:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:55:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:55:36,013 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:36,013 INFO L354 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-07-25 08:55:36,013 INFO L415 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash 68725638, now seen corresponding path program 161 times [2018-07-25 08:55:36,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:36,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:36,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:55:36,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:55:36,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:55:36,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:55:36,707 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-07-25 08:55:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:36,880 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-25 08:55:36,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:55:36,880 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-07-25 08:55:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:36,881 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:55:36,881 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:55:36,884 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:55:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:55:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:55:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:55:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:55:36,887 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-07-25 08:55:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:36,887 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:55:36,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:55:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:55:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:55:36,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:36,888 INFO L354 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-07-25 08:55:36,888 INFO L415 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:36,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2130490912, now seen corresponding path program 162 times [2018-07-25 08:55:36,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:37,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:37,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:55:37,686 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:55:37,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:55:37,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:55:37,690 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-07-25 08:55:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:38,161 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:55:38,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:55:38,161 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-07-25 08:55:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:38,162 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:55:38,162 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:55:38,164 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:55:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:55:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:55:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:55:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:55:38,167 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-07-25 08:55:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:38,167 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:55:38,167 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:55:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:55:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:55:38,168 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:38,168 INFO L354 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-07-25 08:55:38,168 INFO L415 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:38,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1620704966, now seen corresponding path program 163 times [2018-07-25 08:55:38,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:38,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:38,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:55:38,903 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:55:38,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:55:38,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:55:38,907 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-07-25 08:55:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:39,414 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-25 08:55:39,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:55:39,414 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-07-25 08:55:39,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:39,415 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:55:39,415 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:55:39,417 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:55:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:55:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:55:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:55:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:55:39,419 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-07-25 08:55:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:39,419 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:55:39,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:55:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:55:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:55:39,420 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:39,420 INFO L354 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-07-25 08:55:39,420 INFO L415 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:39,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1297757472, now seen corresponding path program 164 times [2018-07-25 08:55:39,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:40,144 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:40,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:55:40,144 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:55:40,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:55:40,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:55:40,148 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-07-25 08:55:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:40,551 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:55:40,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:55:40,551 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-07-25 08:55:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:40,551 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:55:40,551 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:55:40,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:55:40,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:55:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:55:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:55:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:55:40,556 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-07-25 08:55:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:40,556 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:55:40,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:55:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:55:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:55:40,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:40,557 INFO L354 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-07-25 08:55:40,557 INFO L415 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:40,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1575779834, now seen corresponding path program 165 times [2018-07-25 08:55:40,557 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:41,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:41,269 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:55:41,269 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:55:41,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:55:41,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:55:41,273 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-07-25 08:55:41,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:41,562 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-25 08:55:41,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:55:41,562 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-07-25 08:55:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:41,563 INFO L225 Difference]: With dead ends: 172 [2018-07-25 08:55:41,563 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:55:41,565 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:55:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:55:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:55:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:55:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:55:41,568 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-07-25 08:55:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:41,568 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:55:41,568 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:55:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:55:41,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:55:41,569 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:41,569 INFO L354 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-07-25 08:55:41,569 INFO L415 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:41,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1604538464, now seen corresponding path program 166 times [2018-07-25 08:55:41,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:42,307 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:42,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:55:42,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:55:42,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:55:42,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:55:42,311 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-07-25 08:55:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:43,021 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:55:43,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:55:43,021 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-07-25 08:55:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:43,021 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:55:43,021 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:55:43,024 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:55:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:55:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:55:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:55:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:55:43,026 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-07-25 08:55:43,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:43,027 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:55:43,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:55:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:55:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:55:43,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:43,027 INFO L354 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-07-25 08:55:43,027 INFO L415 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:43,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1798911302, now seen corresponding path program 167 times [2018-07-25 08:55:43,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:43,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:43,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:55:43,796 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:55:43,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:55:43,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:55:43,800 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-07-25 08:55:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:44,256 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-25 08:55:44,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:55:44,256 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-07-25 08:55:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:44,256 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:55:44,257 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:55:44,259 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:55:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:55:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:55:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:55:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:55:44,261 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-07-25 08:55:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:44,262 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:55:44,262 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:55:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:55:44,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:55:44,262 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:44,262 INFO L354 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-07-25 08:55:44,262 INFO L415 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:44,263 INFO L82 PathProgramCache]: Analyzing trace with hash -68328352, now seen corresponding path program 168 times [2018-07-25 08:55:44,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:45,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:45,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:55:45,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:55:45,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:55:45,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:55:45,041 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-07-25 08:55:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:45,418 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:55:45,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:55:45,418 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-07-25 08:55:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:45,418 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:55:45,418 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:55:45,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:55:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:55:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:55:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:55:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:55:45,423 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-07-25 08:55:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:45,423 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:55:45,423 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:55:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:55:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:55:45,423 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:45,423 INFO L354 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-07-25 08:55:45,424 INFO L415 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:45,424 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182778, now seen corresponding path program 169 times [2018-07-25 08:55:45,424 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:46,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:46,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:55:46,175 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:55:46,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:55:46,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:55:46,179 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-07-25 08:55:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:46,883 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-25 08:55:46,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:55:46,883 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-07-25 08:55:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:46,883 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:55:46,883 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:55:46,886 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:55:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:55:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:55:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:55:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:55:46,888 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-07-25 08:55:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:46,888 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:55:46,888 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:55:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:55:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:55:46,889 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:46,889 INFO L354 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-07-25 08:55:46,889 INFO L415 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:46,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1239160544, now seen corresponding path program 170 times [2018-07-25 08:55:46,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:47,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:47,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:55:47,651 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:55:47,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:55:47,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:55:47,656 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-07-25 08:55:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:47,882 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:55:47,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:55:47,882 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-07-25 08:55:47,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:47,883 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:55:47,883 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:55:47,886 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:55:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:55:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:55:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:55:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:55:47,889 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-07-25 08:55:47,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:47,889 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:55:47,889 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:55:47,889 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:55:47,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:55:47,890 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:47,890 INFO L354 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-07-25 08:55:47,890 INFO L415 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:47,890 INFO L82 PathProgramCache]: Analyzing trace with hash 240724934, now seen corresponding path program 171 times [2018-07-25 08:55:47,890 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:48,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:48,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:55:48,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:55:48,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:55:48,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:55:48,712 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-07-25 08:55:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:49,364 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-25 08:55:49,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:55:49,364 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-07-25 08:55:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:49,364 INFO L225 Difference]: With dead ends: 178 [2018-07-25 08:55:49,365 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:55:49,367 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:55:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:55:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:55:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:55:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:55:49,370 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-07-25 08:55:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:49,370 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:55:49,370 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:55:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:55:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:55:49,371 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:49,371 INFO L354 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-07-25 08:55:49,371 INFO L415 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:49,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1127465504, now seen corresponding path program 172 times [2018-07-25 08:55:49,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:50,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:50,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:55:50,069 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:55:50,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:55:50,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:55:50,074 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-07-25 08:55:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:50,495 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:55:50,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:55:50,495 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-07-25 08:55:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:50,496 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:55:50,496 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:55:50,499 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:55:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:55:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:55:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:55:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:55:50,501 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-07-25 08:55:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:50,502 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:55:50,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:55:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:55:50,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:55:50,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:50,503 INFO L354 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-07-25 08:55:50,503 INFO L415 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash -591696122, now seen corresponding path program 173 times [2018-07-25 08:55:50,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:51,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:51,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:55:51,334 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:55:51,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:55:51,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:55:51,340 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-07-25 08:55:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:52,068 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-25 08:55:52,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:55:52,068 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-07-25 08:55:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:52,069 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:55:52,069 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:55:52,071 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:55:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:55:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:55:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:55:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:55:52,074 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-07-25 08:55:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:52,074 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:55:52,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:55:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:55:52,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:55:52,075 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:52,075 INFO L354 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-07-25 08:55:52,075 INFO L415 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:52,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1162714464, now seen corresponding path program 174 times [2018-07-25 08:55:52,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:52,905 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:52,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:55:52,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:55:52,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:55:52,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:55:52,911 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-07-25 08:55:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:53,434 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:55:53,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:55:53,434 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-07-25 08:55:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:53,435 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:55:53,435 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:55:53,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:55:53,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:55:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:55:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:55:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:55:53,440 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-07-25 08:55:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:53,440 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:55:53,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:55:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:55:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:55:53,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:53,441 INFO L354 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-07-25 08:55:53,441 INFO L415 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:53,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1684413882, now seen corresponding path program 175 times [2018-07-25 08:55:53,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:54,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:54,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:55:54,334 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:55:54,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:55:54,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:55:54,336 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-07-25 08:55:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:54,880 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-25 08:55:54,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:55:54,880 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-07-25 08:55:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:54,880 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:55:54,880 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:55:54,881 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:55:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:55:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:55:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:55:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:55:54,884 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-07-25 08:55:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:54,884 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:55:54,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:55:54,884 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:55:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:55:54,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:54,884 INFO L354 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-07-25 08:55:54,885 INFO L415 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash -677226656, now seen corresponding path program 176 times [2018-07-25 08:55:54,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:55,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:55,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:55:55,642 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:55:55,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:55:55,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:55:55,646 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-07-25 08:55:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:56,112 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:55:56,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:55:56,112 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-07-25 08:55:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:56,113 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:55:56,113 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:55:56,116 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:55:56,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:55:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:55:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:55:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:55:56,118 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-07-25 08:55:56,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:56,118 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:55:56,118 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:55:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:55:56,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:55:56,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:56,119 INFO L354 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-07-25 08:55:56,119 INFO L415 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:56,120 INFO L82 PathProgramCache]: Analyzing trace with hash 480806278, now seen corresponding path program 177 times [2018-07-25 08:55:56,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:56,979 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:56,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:55:56,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:55:56,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:55:56,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:55:56,985 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-07-25 08:55:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:57,894 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-25 08:55:57,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:55:57,895 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-07-25 08:55:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:57,895 INFO L225 Difference]: With dead ends: 184 [2018-07-25 08:55:57,895 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:55:57,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:55:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:55:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:55:57,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:55:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:55:57,901 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-07-25 08:55:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:57,901 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:55:57,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:55:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:55:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:55:57,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:57,902 INFO L354 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-07-25 08:55:57,902 INFO L415 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:57,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2020088864, now seen corresponding path program 178 times [2018-07-25 08:55:57,902 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:58,768 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:58,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:55:58,769 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:55:58,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:55:58,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:55:58,775 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-07-25 08:55:59,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:59,071 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:55:59,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:55:59,071 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-07-25 08:55:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:59,071 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:55:59,072 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:55:59,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:55:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:55:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:55:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:55:59,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:55:59,077 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-07-25 08:55:59,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:59,077 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:55:59,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:55:59,077 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:55:59,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:55:59,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:59,078 INFO L354 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-07-25 08:55:59,078 INFO L415 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:59,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1801758522, now seen corresponding path program 179 times [2018-07-25 08:55:59,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:59,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:59,965 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:55:59,966 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:55:59,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:55:59,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:55:59,970 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-07-25 08:56:00,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:00,897 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-25 08:56:00,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:56:00,897 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-07-25 08:56:00,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:00,898 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:56:00,898 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:56:00,900 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:56:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:56:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:56:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:56:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:56:00,903 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-07-25 08:56:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:00,903 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:56:00,903 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:56:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:56:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:56:00,904 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:00,904 INFO L354 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-07-25 08:56:00,904 INFO L415 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash -19943200, now seen corresponding path program 180 times [2018-07-25 08:56:00,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:01,781 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:01,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:56:01,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:56:01,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:56:01,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:56:01,786 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-07-25 08:56:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:02,175 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:56:02,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:56:02,175 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-07-25 08:56:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:02,176 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:56:02,176 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:56:02,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:56:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:56:02,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:56:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:56:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:56:02,183 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-07-25 08:56:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:02,183 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:56:02,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:56:02,183 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:56:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:56:02,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:02,184 INFO L354 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-07-25 08:56:02,184 INFO L415 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:02,184 INFO L82 PathProgramCache]: Analyzing trace with hash -618243066, now seen corresponding path program 181 times [2018-07-25 08:56:02,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:03,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:03,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:56:03,125 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:56:03,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:56:03,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:56:03,132 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-07-25 08:56:03,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,839 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-25 08:56:03,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:56:03,839 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-07-25 08:56:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,840 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:56:03,840 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:56:03,843 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:56:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:56:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:56:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:56:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:56:03,845 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-07-25 08:56:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,846 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:56:03,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:56:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:56:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:56:03,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,846 INFO L354 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-07-25 08:56:03,846 INFO L415 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1985669728, now seen corresponding path program 182 times [2018-07-25 08:56:03,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,733 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:56:04,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:56:04,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:56:04,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:56:04,736 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-07-25 08:56:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:05,682 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:56:05,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:56:05,682 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-07-25 08:56:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:05,682 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:56:05,682 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:56:05,684 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:56:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:56:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:56:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:56:05,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:56:05,686 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-07-25 08:56:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:05,687 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:56:05,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:56:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:56:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:56:05,687 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:05,687 INFO L354 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-07-25 08:56:05,687 INFO L415 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:05,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1426223290, now seen corresponding path program 183 times [2018-07-25 08:56:05,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:56:06,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:56:06,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:56:06,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:56:06,611 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-07-25 08:56:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,902 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-25 08:56:06,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:56:06,902 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-07-25 08:56:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,903 INFO L225 Difference]: With dead ends: 190 [2018-07-25 08:56:06,903 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:56:06,906 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:56:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:56:06,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:56:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:56:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:56:06,908 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-07-25 08:56:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,908 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:56:06,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:56:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:56:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:56:06,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,909 INFO L354 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-07-25 08:56:06,909 INFO L415 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1263252896, now seen corresponding path program 184 times [2018-07-25 08:56:06,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:07,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:07,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:56:07,833 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:56:07,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:56:07,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:56:07,838 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-07-25 08:56:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,612 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:56:08,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:56:08,613 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-07-25 08:56:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,613 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:56:08,613 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:56:08,617 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:56:08,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:56:08,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:56:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:56:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:56:08,619 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-07-25 08:56:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,620 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:56:08,620 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:56:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:56:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:56:08,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,620 INFO L354 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-07-25 08:56:08,620 INFO L415 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,621 INFO L82 PathProgramCache]: Analyzing trace with hash -506137978, now seen corresponding path program 185 times [2018-07-25 08:56:08,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:56:09,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:56:09,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:56:09,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:56:09,626 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-07-25 08:56:10,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:10,605 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-25 08:56:10,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:56:10,605 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-07-25 08:56:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:10,606 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:56:10,606 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:56:10,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:56:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:56:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:56:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:56:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:56:10,610 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-07-25 08:56:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:10,610 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:56:10,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:56:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:56:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:56:10,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:10,611 INFO L354 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-07-25 08:56:10,611 INFO L415 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:10,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1489588000, now seen corresponding path program 186 times [2018-07-25 08:56:10,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:11,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:11,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:56:11,541 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:56:11,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:56:11,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:56:11,545 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-07-25 08:56:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,957 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:56:11,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:56:11,957 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-07-25 08:56:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,958 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:56:11,958 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:56:11,960 INFO L574 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 [2018-07-25 08:56:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:56:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:56:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:56:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:56:11,962 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-07-25 08:56:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,962 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:56:11,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:56:11,962 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:56:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:56:11,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,963 INFO L354 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-07-25 08:56:11,963 INFO L415 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1067416122, now seen corresponding path program 187 times [2018-07-25 08:56:11,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:56:12,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:56:12,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:56:12,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:56:12,829 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-07-25 08:56:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:13,246 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-25 08:56:13,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:56:13,247 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-07-25 08:56:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:13,247 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:56:13,247 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:56:13,251 INFO L574 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 [2018-07-25 08:56:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:56:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:56:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:56:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:56:13,254 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-07-25 08:56:13,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:13,254 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:56:13,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:56:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:56:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:56:13,254 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:13,255 INFO L354 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-07-25 08:56:13,255 INFO L415 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:13,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1269834720, now seen corresponding path program 188 times [2018-07-25 08:56:13,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:14,261 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:14,261 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:56:14,262 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:56:14,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:56:14,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:56:14,267 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-07-25 08:56:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,300 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:56:15,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:56:15,300 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-07-25 08:56:15,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,301 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:56:15,301 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:56:15,305 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:56:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:56:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:56:15,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:56:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:56:15,309 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-07-25 08:56:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,309 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:56:15,309 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:56:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:56:15,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:56:15,310 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,310 INFO L354 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-07-25 08:56:15,310 INFO L415 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,311 INFO L82 PathProgramCache]: Analyzing trace with hash 710166790, now seen corresponding path program 189 times [2018-07-25 08:56:15,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:56:16,437 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:56:16,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:56:16,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:56:16,443 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-07-25 08:56:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,645 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-25 08:56:17,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:56:17,646 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-07-25 08:56:17,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,646 INFO L225 Difference]: With dead ends: 196 [2018-07-25 08:56:17,646 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:56:17,650 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:56:17,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:56:17,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:56:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:56:17,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:56:17,653 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-07-25 08:56:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,654 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:56:17,654 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:56:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:56:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:56:17,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,655 INFO L354 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-07-25 08:56:17,655 INFO L415 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,655 INFO L82 PathProgramCache]: Analyzing trace with hash 540330144, now seen corresponding path program 190 times [2018-07-25 08:56:17,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,611 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,611 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:56:18,612 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:56:18,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:56:18,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:56:18,616 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-07-25 08:56:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,334 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:56:19,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:56:19,334 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-07-25 08:56:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,335 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:56:19,335 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:56:19,338 INFO L574 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 [2018-07-25 08:56:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:56:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:56:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:56:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:56:19,341 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-07-25 08:56:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,341 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:56:19,341 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:56:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:56:19,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:56:19,342 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,342 INFO L354 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-07-25 08:56:19,342 INFO L415 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,342 INFO L82 PathProgramCache]: Analyzing trace with hash -429638586, now seen corresponding path program 191 times [2018-07-25 08:56:19,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:56:20,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:56:20,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:56:20,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:56:20,410 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-07-25 08:56:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:20,751 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-25 08:56:20,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:56:20,751 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-07-25 08:56:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:20,752 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:56:20,752 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:56:20,755 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:56:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:56:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:56:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:56:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:56:20,759 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-07-25 08:56:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:20,759 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:56:20,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:56:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:56:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:56:20,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:20,761 INFO L354 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-07-25 08:56:20,761 INFO L415 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -433898144, now seen corresponding path program 192 times [2018-07-25 08:56:20,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:21,879 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:21,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:56:21,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:56:21,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:56:21,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:56:21,886 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-07-25 08:56:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:22,361 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:56:22,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:56:22,361 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-07-25 08:56:22,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:22,362 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:56:22,362 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:56:22,365 INFO L574 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 [2018-07-25 08:56:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:56:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:56:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:56:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:56:22,368 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-07-25 08:56:22,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:22,368 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:56:22,368 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:56:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:56:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:56:22,369 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:22,369 INFO L354 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-07-25 08:56:22,369 INFO L415 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:22,369 INFO L82 PathProgramCache]: Analyzing trace with hash -565944442, now seen corresponding path program 193 times [2018-07-25 08:56:22,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:23,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:23,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:56:23,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:56:23,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:56:23,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:56:23,445 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-07-25 08:56:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:24,311 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-25 08:56:24,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:56:24,312 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-07-25 08:56:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:24,312 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:56:24,312 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:56:24,316 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:56:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:56:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:56:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:56:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:56:24,318 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-07-25 08:56:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:24,318 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:56:24,319 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:56:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:56:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:56:24,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:24,319 INFO L354 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-07-25 08:56:24,319 INFO L415 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:24,319 INFO L82 PathProgramCache]: Analyzing trace with hash -364412384, now seen corresponding path program 194 times [2018-07-25 08:56:24,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:25,423 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:25,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:56:25,423 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:56:25,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:56:25,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:56:25,429 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-07-25 08:56:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:26,591 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:56:26,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:56:26,591 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-07-25 08:56:26,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:26,592 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:56:26,592 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:56:26,595 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:56:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:56:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:56:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:56:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:56:26,597 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-07-25 08:56:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:26,598 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:56:26,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:56:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:56:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:56:26,598 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:26,598 INFO L354 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-07-25 08:56:26,599 INFO L415 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:26,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1588114118, now seen corresponding path program 195 times [2018-07-25 08:56:26,599 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:27,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:27,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:56:27,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:56:27,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:56:27,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:56:27,527 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-07-25 08:56:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:28,808 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-25 08:56:28,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:56:28,808 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-07-25 08:56:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:28,808 INFO L225 Difference]: With dead ends: 202 [2018-07-25 08:56:28,808 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:56:28,811 INFO L574 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 [2018-07-25 08:56:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:56:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:56:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:56:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:56:28,814 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-07-25 08:56:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:28,814 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:56:28,814 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:56:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:56:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:56:28,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:28,815 INFO L354 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-07-25 08:56:28,815 INFO L415 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:28,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1986893536, now seen corresponding path program 196 times [2018-07-25 08:56:28,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:56:29,826 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:56:29,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:56:29,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:56:29,830 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-07-25 08:56:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:30,823 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:56:30,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:56:30,823 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-07-25 08:56:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:30,824 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:56:30,824 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:56:30,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:56:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:56:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:56:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:56:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:56:30,831 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-07-25 08:56:30,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:30,831 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:56:30,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:56:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:56:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:56:30,832 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:30,833 INFO L354 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-07-25 08:56:30,833 INFO L415 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1464153606, now seen corresponding path program 197 times [2018-07-25 08:56:30,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:56:31,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:56:31,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:56:31,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:56:31,933 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-07-25 08:56:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:33,015 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-25 08:56:33,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:56:33,015 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-07-25 08:56:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:33,016 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:56:33,016 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:56:33,017 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:56:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:56:33,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:56:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:56:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:56:33,020 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-07-25 08:56:33,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:33,020 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:56:33,020 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:56:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:56:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:56:33,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:33,021 INFO L354 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-07-25 08:56:33,021 INFO L415 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1855882336, now seen corresponding path program 198 times [2018-07-25 08:56:33,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:34,054 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:34,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:56:34,054 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:56:34,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:56:34,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:56:34,059 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-07-25 08:56:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:35,143 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:56:35,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:56:35,143 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-07-25 08:56:35,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:35,143 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:56:35,143 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:56:35,147 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:56:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:56:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:56:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:56:35,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:56:35,149 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-07-25 08:56:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:35,149 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:56:35,150 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:56:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:56:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:56:35,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:35,150 INFO L354 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-07-25 08:56:35,150 INFO L415 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:35,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1697781434, now seen corresponding path program 199 times [2018-07-25 08:56:35,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:36,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:36,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:56:36,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:56:36,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:56:36,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:56:36,192 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-07-25 08:56:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:37,213 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-25 08:56:37,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:56:37,213 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-07-25 08:56:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:37,213 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:56:37,213 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:56:37,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:56:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:56:37,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:56:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:56:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:56:37,219 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-07-25 08:56:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:37,219 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:56:37,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:56:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:56:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:56:37,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:37,220 INFO L354 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-07-25 08:56:37,220 INFO L415 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:37,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1091620768, now seen corresponding path program 200 times [2018-07-25 08:56:37,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:38,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:38,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:56:38,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:56:38,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:56:38,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:56:38,275 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-07-25 08:56:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:39,237 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:56:39,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:56:39,237 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-07-25 08:56:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:39,237 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:56:39,237 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:56:39,239 INFO L574 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 [2018-07-25 08:56:39,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:56:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:56:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:56:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:56:39,242 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-07-25 08:56:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:39,243 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:56:39,243 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:56:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:56:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:56:39,243 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:39,244 INFO L354 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-07-25 08:56:39,244 INFO L415 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:39,244 INFO L82 PathProgramCache]: Analyzing trace with hash 519490694, now seen corresponding path program 201 times [2018-07-25 08:56:39,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:40,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:40,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:56:40,297 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:56:40,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:56:40,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:56:40,302 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-07-25 08:56:41,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:41,382 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-25 08:56:41,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:56:41,382 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-07-25 08:56:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:41,383 INFO L225 Difference]: With dead ends: 208 [2018-07-25 08:56:41,383 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:56:41,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:56:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:56:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:56:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:56:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:56:41,389 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-07-25 08:56:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:41,389 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:56:41,390 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:56:41,390 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:56:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:56:41,390 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:41,390 INFO L354 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-07-25 08:56:41,391 INFO L415 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:41,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1075661536, now seen corresponding path program 202 times [2018-07-25 08:56:41,391 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:42,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:42,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:56:42,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:56:42,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:56:42,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:56:42,484 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-07-25 08:56:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:43,684 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:56:43,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:56:43,684 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-07-25 08:56:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:43,684 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:56:43,684 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:56:43,687 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:56:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:56:43,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:56:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:56:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:56:43,690 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-07-25 08:56:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:43,690 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:56:43,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:56:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:56:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:56:43,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:43,691 INFO L354 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-07-25 08:56:43,691 INFO L415 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:43,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1014226886, now seen corresponding path program 203 times [2018-07-25 08:56:43,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:44,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:44,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:56:44,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:56:44,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:56:44,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:56:44,737 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-07-25 08:56:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:46,078 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-25 08:56:46,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:56:46,078 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-07-25 08:56:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:46,079 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:56:46,079 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:56:46,082 INFO L574 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 [2018-07-25 08:56:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:56:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:56:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:56:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:56:46,085 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-07-25 08:56:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:46,085 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:56:46,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:56:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:56:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:56:46,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:46,086 INFO L354 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-07-25 08:56:46,086 INFO L415 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:46,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1376258528, now seen corresponding path program 204 times [2018-07-25 08:56:46,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:47,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:47,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:56:47,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:56:47,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:56:47,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:56:47,190 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-07-25 08:56:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:48,717 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:56:48,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:56:48,718 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-07-25 08:56:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:48,718 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:56:48,718 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:56:48,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:56:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:56:48,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:56:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:56:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:56:48,724 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-07-25 08:56:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:48,725 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:56:48,725 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:56:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:56:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:56:48,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:48,725 INFO L354 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-07-25 08:56:48,726 INFO L415 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash -285662458, now seen corresponding path program 205 times [2018-07-25 08:56:48,726 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:49,957 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:49,957 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:56:49,957 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:56:49,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:56:49,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:56:49,960 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-07-25 08:56:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:51,378 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-25 08:56:51,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:56:51,378 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-07-25 08:56:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:51,379 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:56:51,379 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:56:51,380 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:56:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:56:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:56:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:56:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:56:51,384 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-07-25 08:56:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:51,384 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:56:51,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:56:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:56:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:56:51,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:51,386 INFO L354 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-07-25 08:56:51,386 INFO L415 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash -265605472, now seen corresponding path program 206 times [2018-07-25 08:56:51,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:52,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:52,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:56:52,688 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:56:52,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:56:52,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:56:52,697 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-07-25 08:56:54,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:54,159 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:56:54,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:56:54,159 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-07-25 08:56:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:54,160 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:56:54,160 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:56:54,164 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:56:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:56:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:56:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:56:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:56:54,166 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-07-25 08:56:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:54,167 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:56:54,167 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:56:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:56:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:56:54,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:54,167 INFO L354 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-07-25 08:56:54,168 INFO L415 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:54,168 INFO L82 PathProgramCache]: Analyzing trace with hash 356161094, now seen corresponding path program 207 times [2018-07-25 08:56:54,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:55,329 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:55,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:56:55,330 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:56:55,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:56:55,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:56:55,336 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-07-25 08:56:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:56,281 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-25 08:56:56,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:56:56,281 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-07-25 08:56:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:56,282 INFO L225 Difference]: With dead ends: 214 [2018-07-25 08:56:56,282 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:56:56,285 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:56:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:56:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:56:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:56:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:56:56,287 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-07-25 08:56:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:56,288 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:56:56,288 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:56:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:56:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:56:56,288 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:56,288 INFO L354 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-07-25 08:56:56,288 INFO L415 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:56,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1843911840, now seen corresponding path program 208 times [2018-07-25 08:56:56,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:57,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:57,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:56:57,440 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:56:57,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:56:57,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:56:57,446 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-07-25 08:56:58,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:58,203 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:56:58,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:56:58,204 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-07-25 08:56:58,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:58,204 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:56:58,204 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:56:58,207 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:56:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:56:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:56:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:56:58,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:56:58,209 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-07-25 08:56:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:58,210 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:56:58,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:56:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:56:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:56:58,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:58,210 INFO L354 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-07-25 08:56:58,211 INFO L415 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1326696058, now seen corresponding path program 209 times [2018-07-25 08:56:58,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:59,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:59,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:56:59,391 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:56:59,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:56:59,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:56:59,397 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-07-25 08:57:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:00,100 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-25 08:57:00,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:57:00,100 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-07-25 08:57:00,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:00,101 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:57:00,101 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:57:00,103 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:57:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:57:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:57:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:57:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:57:00,106 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-07-25 08:57:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:00,106 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:57:00,106 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:57:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:57:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:57:00,107 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:00,107 INFO L354 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-07-25 08:57:00,107 INFO L415 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:00,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1822091296, now seen corresponding path program 210 times [2018-07-25 08:57:00,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:01,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:01,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:57:01,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:57:01,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:57:01,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:57:01,322 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-07-25 08:57:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:02,499 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:57:02,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:57:02,499 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-07-25 08:57:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:02,500 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:57:02,500 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:57:02,501 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:57:02,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:57:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:57:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:57:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:57:02,504 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-07-25 08:57:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:02,505 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:57:02,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:57:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:57:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:57:02,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:02,505 INFO L354 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-07-25 08:57:02,506 INFO L415 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:02,506 INFO L82 PathProgramCache]: Analyzing trace with hash 650251462, now seen corresponding path program 211 times [2018-07-25 08:57:02,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:03,713 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:03,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:57:03,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:57:03,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:57:03,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:57:03,720 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-07-25 08:57:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:05,463 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-25 08:57:05,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:57:05,463 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-07-25 08:57:05,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:05,464 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:57:05,464 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:57:05,468 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:57:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:57:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:57:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:57:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:57:05,471 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-07-25 08:57:05,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:05,471 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:57:05,471 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:57:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:57:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:57:05,472 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:05,472 INFO L354 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-07-25 08:57:05,472 INFO L415 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:05,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1317045024, now seen corresponding path program 212 times [2018-07-25 08:57:05,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:06,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:06,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:57:06,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:57:06,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:57:06,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:57:06,726 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-07-25 08:57:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:07,727 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:57:07,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:57:07,727 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-07-25 08:57:07,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:07,728 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:57:07,728 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:57:07,732 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:57:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:57:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:57:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:57:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:57:07,735 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-07-25 08:57:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:07,735 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:57:07,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:57:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:57:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:57:07,736 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:07,736 INFO L354 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-07-25 08:57:07,736 INFO L415 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:07,736 INFO L82 PathProgramCache]: Analyzing trace with hash 2121273350, now seen corresponding path program 213 times [2018-07-25 08:57:07,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:08,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:08,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:57:08,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:57:08,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:57:08,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:57:08,975 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-07-25 08:57:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:09,412 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-25 08:57:09,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:57:09,412 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-07-25 08:57:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:09,412 INFO L225 Difference]: With dead ends: 220 [2018-07-25 08:57:09,412 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:57:09,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:57:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:57:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:57:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:57:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:57:09,417 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-07-25 08:57:09,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:09,417 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:57:09,417 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:57:09,417 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:57:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:57:09,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:09,418 INFO L354 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-07-25 08:57:09,418 INFO L415 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:09,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1334960544, now seen corresponding path program 214 times [2018-07-25 08:57:09,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:10,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:10,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:57:10,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:57:10,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:57:10,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:57:10,570 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-07-25 08:57:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:11,432 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:57:11,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:57:11,432 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-07-25 08:57:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:11,433 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:57:11,433 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:57:11,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:57:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:57:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:57:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:57:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:57:11,438 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-07-25 08:57:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:11,438 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:57:11,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:57:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:57:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:57:11,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:11,439 INFO L354 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-07-25 08:57:11,439 INFO L415 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:11,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1565899962, now seen corresponding path program 215 times [2018-07-25 08:57:11,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:12,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:12,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:57:12,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:57:12,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:57:12,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:57:12,555 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-07-25 08:57:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:13,884 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-25 08:57:13,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:57:13,884 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-07-25 08:57:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:13,884 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:57:13,885 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:57:13,886 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:57:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:57:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:57:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:57:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:57:13,889 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-07-25 08:57:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:13,889 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:57:13,889 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:57:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:57:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:57:13,890 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:13,890 INFO L354 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-07-25 08:57:13,890 INFO L415 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1298262432, now seen corresponding path program 216 times [2018-07-25 08:57:13,890 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:15,107 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:15,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:57:15,108 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:57:15,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:57:15,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:57:15,115 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-07-25 08:57:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:16,191 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:57:16,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:57:16,191 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-07-25 08:57:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:16,191 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:57:16,191 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:57:16,194 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:57:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:57:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:57:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:57:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:57:16,197 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-07-25 08:57:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:16,197 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:57:16,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:57:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:57:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:57:16,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:16,198 INFO L354 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-07-25 08:57:16,198 INFO L415 AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:16,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1591433594, now seen corresponding path program 217 times [2018-07-25 08:57:16,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:17,404 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:17,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:57:17,404 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:57:17,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:57:17,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:57:17,412 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-07-25 08:57:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:18,412 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-25 08:57:18,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:57:18,413 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-07-25 08:57:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:18,413 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:57:18,413 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:57:18,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:57:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:57:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:57:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:57:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:57:18,419 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-07-25 08:57:18,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:18,419 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:57:18,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:57:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:57:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:57:18,420 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:18,421 INFO L354 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-07-25 08:57:18,421 INFO L415 AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:18,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2089805024, now seen corresponding path program 218 times [2018-07-25 08:57:18,421 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:19,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:19,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:57:19,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:57:19,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:57:19,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:57:19,765 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-07-25 08:57:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:21,731 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:57:21,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:57:21,732 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-07-25 08:57:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:21,732 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:57:21,732 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:57:21,736 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:57:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:57:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:57:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:57:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:57:21,739 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-07-25 08:57:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:21,739 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:57:21,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 08:57:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:57:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:57:21,740 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:21,740 INFO L354 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-07-25 08:57:21,740 INFO L415 AbstractCegarLoop]: === Iteration 220 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:21,740 INFO L82 PathProgramCache]: Analyzing trace with hash -359450170, now seen corresponding path program 219 times [2018-07-25 08:57:21,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:23,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:23,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:57:23,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:57:23,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:57:23,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:57:23,110 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-07-25 08:57:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:23,709 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-25 08:57:23,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:57:23,709 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-07-25 08:57:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:23,710 INFO L225 Difference]: With dead ends: 226 [2018-07-25 08:57:23,710 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:57:23,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:57:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:57:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:57:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:57:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:57:23,716 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-07-25 08:57:23,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:23,716 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:57:23,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:57:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:57:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:57:23,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:23,717 INFO L354 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-07-25 08:57:23,717 INFO L415 AbstractCegarLoop]: === Iteration 221 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1741942752, now seen corresponding path program 220 times [2018-07-25 08:57:23,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:24,957 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:24,957 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 08:57:24,958 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 08:57:24,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 08:57:24,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:57:24,964 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-07-25 08:57:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:26,207 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:57:26,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:57:26,207 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-07-25 08:57:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:26,208 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:57:26,208 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:57:26,211 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:57:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:57:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:57:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:57:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:57:26,213 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-07-25 08:57:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:26,213 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:57:26,214 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 08:57:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:57:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:57:26,214 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:26,214 INFO L354 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-07-25 08:57:26,214 INFO L415 AbstractCegarLoop]: === Iteration 222 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:26,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1834353402, now seen corresponding path program 221 times [2018-07-25 08:57:26,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:27,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:27,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:57:27,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:57:27,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:57:27,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:57:27,352 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-07-25 08:57:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:29,263 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-25 08:57:29,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:57:29,263 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-07-25 08:57:29,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:29,264 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:57:29,264 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:57:29,268 INFO L574 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 [2018-07-25 08:57:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:57:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:57:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:57:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:57:29,271 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-07-25 08:57:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:29,272 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:57:29,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:57:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:57:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:57:29,272 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:29,272 INFO L354 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-07-25 08:57:29,273 INFO L415 AbstractCegarLoop]: === Iteration 223 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:29,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1030384480, now seen corresponding path program 222 times [2018-07-25 08:57:29,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:30,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:30,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 08:57:30,605 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 08:57:30,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 08:57:30,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:57:30,611 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-07-25 08:57:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:31,708 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:57:31,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:57:31,708 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-07-25 08:57:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:31,708 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:57:31,709 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:57:31,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:57:31,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:57:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:57:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:57:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:57:31,715 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-07-25 08:57:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:31,715 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:57:31,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 08:57:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:57:31,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:57:31,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:31,716 INFO L354 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-07-25 08:57:31,716 INFO L415 AbstractCegarLoop]: === Iteration 224 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:31,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1877151674, now seen corresponding path program 223 times [2018-07-25 08:57:31,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:33,079 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:33,079 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:57:33,080 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:57:33,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:57:33,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:57:33,086 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-07-25 08:57:34,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:34,774 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-25 08:57:34,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:57:34,774 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-07-25 08:57:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:34,775 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:57:34,775 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:57:34,777 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:57:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:57:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:57:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:57:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:57:34,780 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-07-25 08:57:34,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:34,780 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:57:34,780 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:57:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:57:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:57:34,781 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:34,781 INFO L354 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-07-25 08:57:34,781 INFO L415 AbstractCegarLoop]: === Iteration 225 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:34,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1937836384, now seen corresponding path program 224 times [2018-07-25 08:57:34,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:36,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:36,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-25 08:57:36,075 INFO L451 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-25 08:57:36,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-25 08:57:36,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:57:36,080 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-07-25 08:57:36,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:36,586 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:57:36,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:57:36,586 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-07-25 08:57:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:36,587 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:57:36,587 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:57:36,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:57:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:57:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:57:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:57:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:57:36,591 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-07-25 08:57:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:36,592 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:57:36,592 INFO L473 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-25 08:57:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:57:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:57:36,592 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:36,592 INFO L354 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-07-25 08:57:36,592 INFO L415 AbstractCegarLoop]: === Iteration 226 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:36,593 INFO L82 PathProgramCache]: Analyzing trace with hash -56618106, now seen corresponding path program 225 times [2018-07-25 08:57:36,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:37,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:37,957 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 08:57:37,957 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:57:37,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:57:37,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:57:37,964 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-07-25 08:57:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:39,996 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-25 08:57:39,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:57:39,996 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-07-25 08:57:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:39,997 INFO L225 Difference]: With dead ends: 232 [2018-07-25 08:57:39,997 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:57:40,000 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:57:40,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:57:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 08:57:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:57:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:57:40,002 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-07-25 08:57:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:40,002 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:57:40,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:57:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:57:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:57:40,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:40,003 INFO L354 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-07-25 08:57:40,003 INFO L415 AbstractCegarLoop]: === Iteration 227 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:40,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1755165152, now seen corresponding path program 226 times [2018-07-25 08:57:40,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:41,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:41,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-25 08:57:41,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-25 08:57:41,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-25 08:57:41,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:57:41,444 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-07-25 08:57:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:42,413 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:57:42,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 08:57:42,413 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-07-25 08:57:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:42,414 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:57:42,414 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:57:42,416 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:57:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:57:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:57:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:57:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:57:42,418 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-07-25 08:57:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:42,419 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:57:42,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-25 08:57:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:57:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:57:42,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:42,419 INFO L354 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-07-25 08:57:42,420 INFO L415 AbstractCegarLoop]: === Iteration 228 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451270, now seen corresponding path program 227 times [2018-07-25 08:57:42,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:43,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:43,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 08:57:43,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 08:57:43,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 08:57:43,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:57:43,798 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-07-25 08:57:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:46,044 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-25 08:57:46,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:57:46,044 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-07-25 08:57:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:46,044 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:57:46,044 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:57:46,049 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:57:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:57:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:57:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:57:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:57:46,052 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-07-25 08:57:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:46,052 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:57:46,052 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 08:57:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:57:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:57:46,053 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:46,053 INFO L354 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-07-25 08:57:46,053 INFO L415 AbstractCegarLoop]: === Iteration 229 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:46,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1208312544, now seen corresponding path program 228 times [2018-07-25 08:57:46,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:47,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:47,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-25 08:57:47,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-25 08:57:47,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-25 08:57:47,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:57:47,453 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-07-25 08:57:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:47,939 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:57:47,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-25 08:57:47,939 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-07-25 08:57:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:47,939 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:57:47,940 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:57:47,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:57:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:57:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:57:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:57:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:57:47,944 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-07-25 08:57:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:47,945 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:57:47,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-25 08:57:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:57:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:57:47,945 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:47,945 INFO L354 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-07-25 08:57:47,946 INFO L415 AbstractCegarLoop]: === Iteration 230 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:47,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1197020666, now seen corresponding path program 229 times [2018-07-25 08:57:47,946 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:49,363 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:49,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 08:57:49,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 08:57:49,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 08:57:49,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:57:49,371 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-07-25 08:57:51,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:51,650 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-25 08:57:51,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 08:57:51,650 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-07-25 08:57:51,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:51,650 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:57:51,650 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:57:51,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:57:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:57:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 08:57:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:57:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:57:51,658 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-07-25 08:57:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:51,658 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:57:51,658 INFO L473 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-25 08:57:51,658 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:57:51,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:57:51,659 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:51,659 INFO L354 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-07-25 08:57:51,659 INFO L415 AbstractCegarLoop]: === Iteration 231 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1547061152, now seen corresponding path program 230 times [2018-07-25 08:57:51,660 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:53,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:53,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-25 08:57:53,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-25 08:57:53,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-25 08:57:53,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:57:53,178 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-07-25 08:57:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:54,322 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:57:54,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-25 08:57:54,322 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-07-25 08:57:54,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:54,323 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:57:54,323 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:57:54,324 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:57:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:57:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:57:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:57:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:57:54,327 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-07-25 08:57:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:54,327 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:57:54,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-25 08:57:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:57:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:57:54,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:54,328 INFO L354 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-07-25 08:57:54,328 INFO L415 AbstractCegarLoop]: === Iteration 232 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:54,328 INFO L82 PathProgramCache]: Analyzing trace with hash 714251590, now seen corresponding path program 231 times [2018-07-25 08:57:54,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:55,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:55,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-25 08:57:55,575 INFO L451 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-25 08:57:55,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-25 08:57:55,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:57:55,581 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-07-25 08:57:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:56,350 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-25 08:57:56,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 08:57:56,350 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-07-25 08:57:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:56,351 INFO L225 Difference]: With dead ends: 238 [2018-07-25 08:57:56,351 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:57:56,354 INFO L574 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 [2018-07-25 08:57:56,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:57:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 08:57:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 08:57:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 08:57:56,357 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-07-25 08:57:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:56,357 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 08:57:56,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-25 08:57:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 08:57:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 08:57:56,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:56,358 INFO L354 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-07-25 08:57:56,358 INFO L415 AbstractCegarLoop]: === Iteration 233 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash 666958944, now seen corresponding path program 232 times [2018-07-25 08:57:56,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:57,665 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:57,665 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234] total 234 [2018-07-25 08:57:57,665 INFO L451 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-07-25 08:57:57,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-07-25 08:57:57,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:57:57,668 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-07-25 08:57:59,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:59,177 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:57:59,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-25 08:57:59,177 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-07-25 08:57:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:59,177 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:57:59,178 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:57:59,179 INFO L574 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 [2018-07-25 08:57:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:57:59,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:57:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:57:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:57:59,181 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-07-25 08:57:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:59,182 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:57:59,182 INFO L473 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-07-25 08:57:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:57:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:57:59,182 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:59,182 INFO L354 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-07-25 08:57:59,183 INFO L415 AbstractCegarLoop]: === Iteration 234 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:59,183 INFO L82 PathProgramCache]: Analyzing trace with hash -799113082, now seen corresponding path program 233 times [2018-07-25 08:57:59,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:00,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:00,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-25 08:58:00,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-25 08:58:00,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-25 08:58:00,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:58:00,636 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-07-25 08:58:01,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:01,879 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-25 08:58:01,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 08:58:01,879 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-07-25 08:58:01,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:01,880 INFO L225 Difference]: With dead ends: 240 [2018-07-25 08:58:01,880 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:58:01,883 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:58:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:58:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:58:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:58:01,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 08:58:01,886 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-07-25 08:58:01,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:01,886 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 08:58:01,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-25 08:58:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 08:58:01,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:58:01,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:01,887 INFO L354 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-07-25 08:58:01,887 INFO L415 AbstractCegarLoop]: === Iteration 235 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:01,887 INFO L82 PathProgramCache]: Analyzing trace with hash 997294368, now seen corresponding path program 234 times [2018-07-25 08:58:01,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:03,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:03,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-25 08:58:03,302 INFO L451 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-25 08:58:03,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-25 08:58:03,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:58:03,306 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-07-25 08:58:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:04,421 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:58:04,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-25 08:58:04,421 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-07-25 08:58:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:04,422 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:58:04,422 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:58:04,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:58:04,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:58:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:58:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:58:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:58:04,426 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-07-25 08:58:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:04,427 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:58:04,427 INFO L473 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-25 08:58:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:58:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:58:04,427 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:04,427 INFO L354 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-07-25 08:58:04,428 INFO L415 AbstractCegarLoop]: === Iteration 236 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:04,428 INFO L82 PathProgramCache]: Analyzing trace with hash 851350470, now seen corresponding path program 235 times [2018-07-25 08:58:04,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:05,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:05,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-25 08:58:05,885 INFO L451 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-25 08:58:05,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-25 08:58:05,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:58:05,896 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-07-25 08:58:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:08,001 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-07-25 08:58:08,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-25 08:58:08,001 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-07-25 08:58:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:08,002 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:58:08,002 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 08:58:08,007 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:58:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 08:58:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 08:58:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 08:58:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 08:58:08,010 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-07-25 08:58:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:08,010 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 08:58:08,010 INFO L473 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-07-25 08:58:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 08:58:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 08:58:08,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:08,011 INFO L354 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-07-25 08:58:08,011 INFO L415 AbstractCegarLoop]: === Iteration 237 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash 622056928, now seen corresponding path program 236 times [2018-07-25 08:58:08,011 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:09,566 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:09,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238] total 238 [2018-07-25 08:58:09,567 INFO L451 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-07-25 08:58:09,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-07-25 08:58:09,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:58:09,572 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-07-25 08:58:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:10,834 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:58:10,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-07-25 08:58:10,834 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-07-25 08:58:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:10,835 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:58:10,835 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:58:10,836 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:58:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:58:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:58:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:58:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:58:10,839 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-07-25 08:58:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:10,839 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:58:10,839 INFO L473 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-07-25 08:58:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:58:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:58:10,840 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:10,840 INFO L354 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-07-25 08:58:10,840 INFO L415 AbstractCegarLoop]: === Iteration 238 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:10,840 INFO L82 PathProgramCache]: Analyzing trace with hash 2103891718, now seen corresponding path program 237 times [2018-07-25 08:58:10,840 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:12,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:12,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-25 08:58:12,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-25 08:58:12,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-25 08:58:12,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:58:12,355 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-07-25 08:58:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:13,386 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-07-25 08:58:13,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-25 08:58:13,386 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-07-25 08:58:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:13,387 INFO L225 Difference]: With dead ends: 244 [2018-07-25 08:58:13,387 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:58:13,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:58:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:58:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 08:58:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:58:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 08:58:13,394 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-07-25 08:58:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:13,395 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 08:58:13,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-25 08:58:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 08:58:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 08:58:13,395 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:13,396 INFO L354 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-07-25 08:58:13,396 INFO L415 AbstractCegarLoop]: === Iteration 239 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash 796129952, now seen corresponding path program 238 times [2018-07-25 08:58:13,396 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:14,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:14,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240] total 240 [2018-07-25 08:58:14,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-07-25 08:58:14,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-07-25 08:58:14,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:58:14,979 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-07-25 08:58:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:17,221 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:58:17,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-25 08:58:17,221 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-07-25 08:58:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:17,221 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:58:17,221 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:58:17,223 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:58:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:58:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:58:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:58:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:58:17,226 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-07-25 08:58:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:17,226 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:58:17,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-07-25 08:58:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:58:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:58:17,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:17,227 INFO L354 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-07-25 08:58:17,227 INFO L415 AbstractCegarLoop]: === Iteration 240 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:17,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1089779130, now seen corresponding path program 239 times [2018-07-25 08:58:17,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:18,603 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:18,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241] total 241 [2018-07-25 08:58:18,604 INFO L451 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-07-25 08:58:18,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-07-25 08:58:18,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:58:18,615 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-07-25 08:58:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:20,651 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-07-25 08:58:20,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-25 08:58:20,651 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-07-25 08:58:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:20,652 INFO L225 Difference]: With dead ends: 246 [2018-07-25 08:58:20,652 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:58:20,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:58:20,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:58:20,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 08:58:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 08:58:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 08:58:20,658 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-07-25 08:58:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:20,658 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 08:58:20,658 INFO L473 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-07-25 08:58:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 08:58:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 08:58:20,659 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:20,659 INFO L354 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-07-25 08:58:20,659 INFO L415 AbstractCegarLoop]: === Iteration 241 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:20,659 INFO L82 PathProgramCache]: Analyzing trace with hash 576581472, now seen corresponding path program 240 times [2018-07-25 08:58:20,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:22,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:22,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242] total 242 [2018-07-25 08:58:22,044 INFO L451 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-07-25 08:58:22,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-07-25 08:58:22,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:58:22,051 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-07-25 08:58:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:22,734 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:58:22,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-07-25 08:58:22,734 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-07-25 08:58:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:22,734 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:58:22,734 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:58:22,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:58:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:58:22,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:58:22,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:58:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:58:22,739 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-07-25 08:58:22,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:22,740 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:58:22,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-07-25 08:58:22,740 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:58:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:58:22,740 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:22,740 INFO L354 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-07-25 08:58:22,741 INFO L415 AbstractCegarLoop]: === Iteration 242 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash 694152582, now seen corresponding path program 241 times [2018-07-25 08:58:22,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:24,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:24,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-25 08:58:24,249 INFO L451 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-25 08:58:24,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-25 08:58:24,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 08:58:24,259 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-07-25 08:58:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:26,378 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-07-25 08:58:26,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-07-25 08:58:26,378 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-07-25 08:58:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:26,379 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:58:26,379 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 08:58:26,384 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 08:58:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 08:58:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 08:58:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 08:58:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 08:58:26,388 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-07-25 08:58:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:26,388 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 08:58:26,388 INFO L473 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-25 08:58:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 08:58:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 08:58:26,389 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:26,389 INFO L354 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-07-25 08:58:26,389 INFO L415 AbstractCegarLoop]: === Iteration 243 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:26,389 INFO L82 PathProgramCache]: Analyzing trace with hash 43889696, now seen corresponding path program 242 times [2018-07-25 08:58:26,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:27,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:27,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244] total 244 [2018-07-25 08:58:27,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-07-25 08:58:27,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-07-25 08:58:27,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:58:27,823 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-07-25 08:58:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:29,165 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:58:29,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-25 08:58:29,165 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-07-25 08:58:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:29,166 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:58:29,166 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:58:29,168 INFO L574 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 [2018-07-25 08:58:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:58:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:58:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:58:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:58:29,171 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-07-25 08:58:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:29,171 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:58:29,171 INFO L473 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-07-25 08:58:29,171 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:58:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:58:29,172 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:29,172 INFO L354 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-07-25 08:58:29,172 INFO L415 AbstractCegarLoop]: === Iteration 244 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:29,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1360576710, now seen corresponding path program 243 times [2018-07-25 08:58:29,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:30,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:30,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245] total 245 [2018-07-25 08:58:30,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-07-25 08:58:30,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-07-25 08:58:30,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 08:58:30,519 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-07-25 08:58:32,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:32,222 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-07-25 08:58:32,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-07-25 08:58:32,222 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-07-25 08:58:32,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:32,223 INFO L225 Difference]: With dead ends: 250 [2018-07-25 08:58:32,223 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:58:32,224 INFO L574 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 [2018-07-25 08:58:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:58:32,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 08:58:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 08:58:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 08:58:32,227 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-07-25 08:58:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:32,227 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 08:58:32,227 INFO L473 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-07-25 08:58:32,227 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 08:58:32,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 08:58:32,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:32,228 INFO L354 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-07-25 08:58:32,228 INFO L415 AbstractCegarLoop]: === Iteration 245 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:32,228 INFO L82 PathProgramCache]: Analyzing trace with hash -771798816, now seen corresponding path program 244 times [2018-07-25 08:58:32,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:33,722 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:33,722 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246] total 246 [2018-07-25 08:58:33,722 INFO L451 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-07-25 08:58:33,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-07-25 08:58:33,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:58:33,730 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-07-25 08:58:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:36,122 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:58:36,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-07-25 08:58:36,123 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-07-25 08:58:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:36,123 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:58:36,123 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:58:36,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:58:36,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:58:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:58:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:58:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:58:36,131 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-07-25 08:58:36,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:36,131 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:58:36,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-07-25 08:58:36,131 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:58:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:58:36,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:36,132 INFO L354 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-07-25 08:58:36,132 INFO L415 AbstractCegarLoop]: === Iteration 246 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:36,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1844036614, now seen corresponding path program 245 times [2018-07-25 08:58:36,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:37,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:37,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247] total 247 [2018-07-25 08:58:37,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-07-25 08:58:37,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-07-25 08:58:37,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:58:37,767 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-07-25 08:58:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:39,217 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-07-25 08:58:39,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-07-25 08:58:39,217 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-07-25 08:58:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:39,218 INFO L225 Difference]: With dead ends: 252 [2018-07-25 08:58:39,218 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:58:39,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:58:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:58:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 08:58:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 08:58:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 08:58:39,224 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-07-25 08:58:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:39,224 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 08:58:39,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-07-25 08:58:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 08:58:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 08:58:39,225 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:39,225 INFO L354 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-07-25 08:58:39,225 INFO L415 AbstractCegarLoop]: === Iteration 247 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:39,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1330556320, now seen corresponding path program 246 times [2018-07-25 08:58:39,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:40,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:40,866 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248] total 248 [2018-07-25 08:58:40,866 INFO L451 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-07-25 08:58:40,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-07-25 08:58:40,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 08:58:40,874 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-07-25 08:58:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:42,512 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:58:42,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-25 08:58:42,512 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-07-25 08:58:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:42,513 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:58:42,513 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:58:42,518 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 08:58:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:58:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:58:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:58:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 08:58:42,521 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-07-25 08:58:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:42,521 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 08:58:42,521 INFO L473 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-07-25 08:58:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 08:58:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:58:42,522 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:42,522 INFO L354 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-07-25 08:58:42,522 INFO L415 AbstractCegarLoop]: === Iteration 248 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:42,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1702430906, now seen corresponding path program 247 times [2018-07-25 08:58:42,522 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:43,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:43,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249] total 249 [2018-07-25 08:58:43,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-07-25 08:58:43,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-07-25 08:58:43,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-25 08:58:43,997 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-07-25 08:58:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:44,736 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-07-25 08:58:44,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-07-25 08:58:44,736 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-07-25 08:58:44,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:44,737 INFO L225 Difference]: With dead ends: 254 [2018-07-25 08:58:44,737 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 08:58:44,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-25 08:58:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 08:58:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 08:58:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 08:58:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 08:58:44,743 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-07-25 08:58:44,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:44,743 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 08:58:44,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-07-25 08:58:44,743 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 08:58:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 08:58:44,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:44,744 INFO L354 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-07-25 08:58:44,744 INFO L415 AbstractCegarLoop]: === Iteration 249 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:44,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1235754400, now seen corresponding path program 248 times [2018-07-25 08:58:44,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:46,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:46,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250] total 250 [2018-07-25 08:58:46,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-07-25 08:58:46,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-07-25 08:58:46,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 08:58:46,265 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-07-25 08:58:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:48,320 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:58:48,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-07-25 08:58:48,320 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-07-25 08:58:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:48,321 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:58:48,321 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:58:48,324 INFO L574 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 [2018-07-25 08:58:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:58:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:58:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:58:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 08:58:48,327 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-07-25 08:58:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:48,327 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 08:58:48,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-07-25 08:58:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 08:58:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:58:48,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:48,328 INFO L354 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-07-25 08:58:48,328 INFO L415 AbstractCegarLoop]: === Iteration 250 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash 346315398, now seen corresponding path program 249 times [2018-07-25 08:58:48,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:50,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:50,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251] total 251 [2018-07-25 08:58:50,018 INFO L451 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-07-25 08:58:50,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-07-25 08:58:50,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-25 08:58:50,027 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-07-25 08:58:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:50,799 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-07-25 08:58:50,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-07-25 08:58:50,799 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-07-25 08:58:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:50,800 INFO L225 Difference]: With dead ends: 256 [2018-07-25 08:58:50,800 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 08:58:50,803 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-25 08:58:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 08:58:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 08:58:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 08:58:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 08:58:50,806 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-07-25 08:58:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:50,806 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 08:58:50,806 INFO L473 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-07-25 08:58:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 08:58:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 08:58:50,807 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:50,807 INFO L354 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-07-25 08:58:50,807 INFO L415 AbstractCegarLoop]: === Iteration 251 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:50,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2145838880, now seen corresponding path program 250 times [2018-07-25 08:58:50,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:52,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:52,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252] total 252 [2018-07-25 08:58:52,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-07-25 08:58:52,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-07-25 08:58:52,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-25 08:58:52,274 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-07-25 08:58:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:54,343 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:58:54,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-07-25 08:58:54,343 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-07-25 08:58:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:54,343 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:58:54,343 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:58:54,347 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-25 08:58:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:58:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:58:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:58:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 08:58:54,350 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-07-25 08:58:54,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:54,350 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 08:58:54,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-07-25 08:58:54,350 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 08:58:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:58:54,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:54,351 INFO L354 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-07-25 08:58:54,351 INFO L415 AbstractCegarLoop]: === Iteration 252 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:54,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2096491974, now seen corresponding path program 251 times [2018-07-25 08:58:54,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:55,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:55,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253] total 253 [2018-07-25 08:58:55,931 INFO L451 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-07-25 08:58:55,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-07-25 08:58:55,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 08:58:55,936 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. Received shutdown request... [2018-07-25 08:58:56,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:58:56,653 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:58:56,659 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:58:56,659 INFO L202 PluginConnector]: Adding new model NeonAngel01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:58:56 BoogieIcfgContainer [2018-07-25 08:58:56,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:58:56,660 INFO L168 Benchmark]: Toolchain (without parser) took 265595.34 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -911.9 MB). Peak memory consumption was 928.4 MB. Max. memory is 7.1 GB. [2018-07-25 08:58:56,662 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:58:56,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:58:56,662 INFO L168 Benchmark]: Boogie Preprocessor took 25.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:58:56,663 INFO L168 Benchmark]: RCFGBuilder took 231.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:58:56,663 INFO L168 Benchmark]: TraceAbstraction took 265287.62 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -922.5 MB). Peak memory consumption was 917.8 MB. Max. memory is 7.1 GB. [2018-07-25 08:58:56,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.52 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 25.94 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 231.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265287.62 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -922.5 MB). Peak memory consumption was 917.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 26]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 26). Cancelled while BasicCegarLoop was constructing difference of abstraction (255states) and interpolant automaton (currently 204 states, 254 states before enhancement), while ReachableStatesComputation was computing reachable states (202 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 265.2s OverallTime, 252 OverallIterations, 251 TraceHistogramMax, 112.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 756 SDtfs, 2 SDslu, 16507 SDs, 0 SdLazy, 48585 SolverSat, 475 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32130 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 31878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 123.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=251, 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: 0.8s AutomataMinimizationTime, 251 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 12.0s SatisfiabilityAnalysisTime, 133.5s InterpolantComputationTime, 32382 NumberOfCodeBlocks, 32382 NumberOfCodeBlocksAsserted, 252 NumberOfCheckSat, 32130 ConstructedInterpolants, 0 QuantifiedInterpolants, 16226154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 252 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2667126 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/NeonAngel01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-58-56-674.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/NeonAngel01.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-58-56-674.csv Completed graceful shutdown