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/20170304-DifficultPathPrograms/up.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:50:14,935 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:50:14,937 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:50:14,953 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:50:14,954 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:50:14,955 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:50:14,956 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:50:14,958 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:50:14,960 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:50:14,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:50:14,961 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:50:14,962 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:50:14,963 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:50:14,964 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:50:14,965 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:50:14,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:50:14,967 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:50:14,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:50:14,971 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:50:14,972 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:50:14,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:50:14,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:50:14,977 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:50:14,977 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:50:14,978 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:50:14,979 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:50:14,980 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:50:14,981 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:50:14,982 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:50:14,983 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:50:14,983 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:50:14,984 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:50:14,986 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:50:15,000 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:50:15,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:50:15,002 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:50:15,002 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:50:15,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:50:15,003 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:50:15,003 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:50:15,003 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:50:15,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:50:15,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:50:15,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:50:15,087 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:50:15,088 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:50:15,088 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/up.i_4.bpl [2018-07-25 08:50:15,089 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/up.i_4.bpl' [2018-07-25 08:50:15,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:50:15,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:50:15,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:50:15,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:50:15,150 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:50:15,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:50:15,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:50:15,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:50:15,195 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:50:15,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:50:15,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:50:15,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:50:15,221 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:50:15,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:50:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:50:15,498 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:50:15,499 INFO L202 PluginConnector]: Adding new model up.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:50:15 BoogieIcfgContainer [2018-07-25 08:50:15,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:50:15,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:50:15,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:50:15,507 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:50:15,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/2) ... [2018-07-25 08:50:15,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1876fe31 and model type up.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:50:15, skipping insertion in model container [2018-07-25 08:50:15,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "up.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:50:15" (2/2) ... [2018-07-25 08:50:15,513 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i_4.bpl [2018-07-25 08:50:15,525 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:50:15,537 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:50:15,594 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:50:15,595 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:50:15,596 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:50:15,596 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:50:15,596 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:50:15,596 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:50:15,596 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:50:15,597 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:50:15,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:50:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 08:50:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:50:15,632 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:15,633 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 08:50:15,634 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:15,640 INFO L82 PathProgramCache]: Analyzing trace with hash 889539593, now seen corresponding path program 1 times [2018-07-25 08:50:15,648 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:15,740 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 08:50:15,743 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:50:15,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:50:15,748 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:50:15,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:50:15,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:50:15,766 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-25 08:50:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:15,814 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2018-07-25 08:50:15,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:50:15,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:50:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:15,828 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:50:15,828 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:50:15,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:50:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:50:15,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:50:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:50:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 08:50:15,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 08:50:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:15,869 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 08:50:15,869 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:50:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 08:50:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:50:15,870 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:15,870 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:50:15,871 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:15,871 INFO L82 PathProgramCache]: Analyzing trace with hash 198622019, now seen corresponding path program 1 times [2018-07-25 08:50:15,871 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:15,916 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:50:15,916 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:50:15,919 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:50:15,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:50:15,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:50:15,920 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-07-25 08:50:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:15,968 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-07-25 08:50:15,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:50:15,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:50:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:15,972 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:50:15,972 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:50:15,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:50:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:50:15,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2018-07-25 08:50:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:50:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 08:50:15,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 08:50:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:15,980 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 08:50:15,980 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:50:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 08:50:15,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:50:15,981 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:15,981 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:50:15,982 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:15,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1897132479, now seen corresponding path program 1 times [2018-07-25 08:50:15,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:50:16,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:50:16,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:50:16,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:50:16,027 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-25 08:50:16,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,085 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-07-25 08:50:16,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:50:16,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:50:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,089 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:50:16,089 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:50:16,090 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:50:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:50:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:50:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:50:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 08:50:16,099 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 08:50:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,099 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 08:50:16,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:50:16,100 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 08:50:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:50:16,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,101 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 08:50:16,102 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1765329927, now seen corresponding path program 2 times [2018-07-25 08:50:16,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,206 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,206 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:50:16,206 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:50:16,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:50:16,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:50:16,207 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-25 08:50:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,295 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 08:50:16,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:50:16,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:50:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,296 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:50:16,296 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:50:16,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:50:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:50:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-07-25 08:50:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:50:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 08:50:16,312 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 08:50:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,314 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 08:50:16,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:50:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 08:50:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:50:16,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,315 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-25 08:50:16,316 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,316 INFO L82 PathProgramCache]: Analyzing trace with hash 29955317, now seen corresponding path program 3 times [2018-07-25 08:50:16,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:50:16,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:50:16,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:50:16,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:50:16,385 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-07-25 08:50:16,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,446 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-07-25 08:50:16,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:50:16,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:50:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,448 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:50:16,448 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:50:16,449 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:50:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:50:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:50:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:50:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 08:50:16,456 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-25 08:50:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,456 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 08:50:16,456 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:50:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 08:50:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:50:16,457 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,457 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-07-25 08:50:16,458 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1153652177, now seen corresponding path program 4 times [2018-07-25 08:50:16,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:50:16,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:50:16,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:50:16,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:50:16,515 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-25 08:50:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,608 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-07-25 08:50:16,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:50:16,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:50:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,609 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:50:16,610 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:50:16,610 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:50:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:50:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-07-25 08:50:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:50:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 08:50:16,627 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-25 08:50:16,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,628 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 08:50:16,628 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:50:16,628 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 08:50:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:50:16,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,631 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-25 08:50:16,631 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash -558246485, now seen corresponding path program 5 times [2018-07-25 08:50:16,632 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:50:16,690 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:50:16,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:50:16,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:50:16,691 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-07-25 08:50:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,764 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-25 08:50:16,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:50:16,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:50:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,765 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:50:16,765 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:50:16,766 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:50:16,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:50:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:50:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:50:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 08:50:16,774 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 08:50:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,775 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 08:50:16,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:50:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 08:50:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:50:16,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,777 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-07-25 08:50:16,777 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,779 INFO L82 PathProgramCache]: Analyzing trace with hash -578011675, now seen corresponding path program 6 times [2018-07-25 08:50:16,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:50:16,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:50:16,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:50:16,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:50:16,854 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-07-25 08:50:16,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,932 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-07-25 08:50:16,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:50:16,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-07-25 08:50:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,935 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:50:16,935 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:50:16,936 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:50:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:50:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-07-25 08:50:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:50:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 08:50:16,943 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-07-25 08:50:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,944 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 08:50:16,944 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:50:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 08:50:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:50:16,945 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,945 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-07-25 08:50:16,945 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1418505247, now seen corresponding path program 7 times [2018-07-25 08:50:16,946 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:50:16,990 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:50:16,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:50:16,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:50:16,991 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-07-25 08:50:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,064 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-07-25 08:50:17,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:50:17,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:50:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,065 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:50:17,065 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:50:17,070 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:50:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:50:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:50:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:50:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 08:50:17,083 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-07-25 08:50:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,084 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 08:50:17,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:50:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 08:50:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:50:17,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,085 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-07-25 08:50:17,085 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1375531237, now seen corresponding path program 8 times [2018-07-25 08:50:17,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:17,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:17,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:50:17,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:50:17,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:50:17,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:50:17,168 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2018-07-25 08:50:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,249 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 08:50:17,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:50:17,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-07-25 08:50:17,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,250 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:50:17,255 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:50:17,256 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:50:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:50:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-07-25 08:50:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:50:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 08:50:17,270 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 08:50:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,271 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 08:50:17,271 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:50:17,271 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 08:50:17,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:50:17,272 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,274 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-25 08:50:17,275 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,275 INFO L82 PathProgramCache]: Analyzing trace with hash 964341655, now seen corresponding path program 9 times [2018-07-25 08:50:17,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:17,340 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:17,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:50:17,341 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:50:17,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:50:17,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:50:17,342 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-07-25 08:50:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,409 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-07-25 08:50:17,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:50:17,409 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:50:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,410 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:50:17,411 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:50:17,411 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:50:17,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:50:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:50:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:50:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 08:50:17,423 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-25 08:50:17,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,423 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 08:50:17,424 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:50:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 08:50:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:50:17,425 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,425 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-07-25 08:50:17,426 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1427751471, now seen corresponding path program 10 times [2018-07-25 08:50:17,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:17,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:17,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:50:17,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:50:17,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:50:17,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:50:17,483 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2018-07-25 08:50:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,565 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-07-25 08:50:17,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:50:17,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-07-25 08:50:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,566 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:50:17,566 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:50:17,567 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:50:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:50:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-07-25 08:50:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:50:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 08:50:17,580 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-07-25 08:50:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,580 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 08:50:17,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:50:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 08:50:17,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:50:17,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,582 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-07-25 08:50:17,582 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1974662963, now seen corresponding path program 11 times [2018-07-25 08:50:17,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:17,646 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:17,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:50:17,647 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:50:17,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:50:17,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:50:17,649 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-07-25 08:50:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,730 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-07-25 08:50:17,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:50:17,731 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:50:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,734 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:50:17,734 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:50:17,735 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:50:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:50:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:50:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:50:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 08:50:17,746 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 08:50:17,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,746 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 08:50:17,746 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:50:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 08:50:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:50:17,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,749 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-07-25 08:50:17,749 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,749 INFO L82 PathProgramCache]: Analyzing trace with hash 577956359, now seen corresponding path program 12 times [2018-07-25 08:50:17,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:17,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:17,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:50:17,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:50:17,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:50:17,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:50:17,828 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2018-07-25 08:50:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,897 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-07-25 08:50:17,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:50:17,897 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-07-25 08:50:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,898 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:50:17,899 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:50:17,902 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:50:17,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:50:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-07-25 08:50:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:50:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 08:50:17,913 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-25 08:50:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,914 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 08:50:17,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:50:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 08:50:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:50:17,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,915 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-25 08:50:17,916 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1365213059, now seen corresponding path program 13 times [2018-07-25 08:50:17,916 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:17,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:17,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:50:17,990 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:50:17,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:50:17,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:50:17,991 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-07-25 08:50:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:18,087 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-07-25 08:50:18,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:50:18,087 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:50:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:18,088 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:50:18,088 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:50:18,093 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:50:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:50:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:50:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:50:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 08:50:18,107 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-25 08:50:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:18,110 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 08:50:18,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:50:18,111 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 08:50:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:50:18,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:18,112 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-07-25 08:50:18,112 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:18,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1260506179, now seen corresponding path program 14 times [2018-07-25 08:50:18,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:18,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:18,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:50:18,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:50:18,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:50:18,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:50:18,180 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-07-25 08:50:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:18,249 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 08:50:18,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:50:18,250 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-07-25 08:50:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:18,251 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:50:18,251 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:50:18,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:50:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:50:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-07-25 08:50:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:50:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 08:50:18,275 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 08:50:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:18,275 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 08:50:18,275 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:50:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 08:50:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:50:18,277 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:18,277 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-07-25 08:50:18,278 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:18,278 INFO L82 PathProgramCache]: Analyzing trace with hash -165727303, now seen corresponding path program 15 times [2018-07-25 08:50:18,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:18,377 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:18,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:50:18,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:50:18,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:50:18,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:50:18,379 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-07-25 08:50:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:18,496 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-25 08:50:18,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:50:18,496 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:50:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:18,497 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:50:18,497 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:50:18,498 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:50:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:50:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:50:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:50:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 08:50:18,507 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-07-25 08:50:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:18,508 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 08:50:18,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:50:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 08:50:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:50:18,509 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:18,509 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-07-25 08:50:18,509 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:18,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1448426227, now seen corresponding path program 16 times [2018-07-25 08:50:18,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:18,566 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:18,566 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:50:18,567 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:50:18,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:50:18,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:50:18,568 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 14 states. [2018-07-25 08:50:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:18,637 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-07-25 08:50:18,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:50:18,638 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2018-07-25 08:50:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:18,638 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:50:18,639 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:50:18,646 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:50:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:50:18,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-07-25 08:50:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:50:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 08:50:18,661 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-25 08:50:18,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:18,661 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 08:50:18,662 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:50:18,662 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 08:50:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:50:18,663 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:18,663 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-25 08:50:18,664 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:18,664 INFO L82 PathProgramCache]: Analyzing trace with hash 368133487, now seen corresponding path program 17 times [2018-07-25 08:50:18,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:18,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:18,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:50:18,757 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:50:18,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:50:18,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:50:18,759 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-07-25 08:50:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:18,890 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-07-25 08:50:18,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:50:18,890 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:50:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:18,891 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:50:18,891 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:50:18,892 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=261, Invalid=731, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:50:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:50:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:50:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:50:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 08:50:18,909 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 08:50:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:18,909 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 08:50:18,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:50:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 08:50:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:50:18,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:18,913 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-07-25 08:50:18,913 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:18,913 INFO L82 PathProgramCache]: Analyzing trace with hash -788717655, now seen corresponding path program 18 times [2018-07-25 08:50:18,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:18,984 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:18,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:50:18,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:50:18,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:50:18,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:50:18,985 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2018-07-25 08:50:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:19,053 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-07-25 08:50:19,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:50:19,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-07-25 08:50:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:19,054 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:50:19,054 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:50:19,055 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:50:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:50:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-07-25 08:50:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:50:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 08:50:19,069 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-07-25 08:50:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:19,069 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 08:50:19,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:50:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 08:50:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:50:19,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:19,070 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-07-25 08:50:19,071 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:19,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2043489115, now seen corresponding path program 19 times [2018-07-25 08:50:19,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:19,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:19,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:50:19,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:50:19,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:50:19,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:50:19,177 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-07-25 08:50:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:19,282 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-07-25 08:50:19,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:50:19,282 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:50:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:19,283 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:50:19,283 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:50:19,285 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:50:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:50:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:50:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:50:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 08:50:19,297 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-07-25 08:50:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:19,298 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 08:50:19,298 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:50:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 08:50:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:50:19,299 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:19,299 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-07-25 08:50:19,299 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash -957152801, now seen corresponding path program 20 times [2018-07-25 08:50:19,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:19,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:19,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:50:19,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:50:19,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:50:19,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:50:19,376 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 16 states. [2018-07-25 08:50:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:19,455 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 08:50:19,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:50:19,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2018-07-25 08:50:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:19,456 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:50:19,457 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:50:19,457 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:50:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:50:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-07-25 08:50:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:50:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 08:50:19,473 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 08:50:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:19,473 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 08:50:19,474 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:50:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 08:50:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:50:19,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:19,474 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-25 08:50:19,475 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:19,475 INFO L82 PathProgramCache]: Analyzing trace with hash -700907173, now seen corresponding path program 21 times [2018-07-25 08:50:19,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:19,584 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:19,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:50:19,585 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:50:19,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:50:19,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:50:19,586 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-07-25 08:50:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:19,718 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-07-25 08:50:19,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:50:19,718 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:50:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:19,719 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:50:19,719 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:50:19,721 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:50:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:50:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:50:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:50:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 08:50:19,733 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-25 08:50:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:19,733 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 08:50:19,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:50:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 08:50:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:50:19,734 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:19,734 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-07-25 08:50:19,735 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash 877396373, now seen corresponding path program 22 times [2018-07-25 08:50:19,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:19,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:19,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:50:19,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:50:19,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:50:19,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:50:19,810 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 17 states. [2018-07-25 08:50:19,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:19,947 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-07-25 08:50:19,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:50:19,947 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2018-07-25 08:50:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:19,948 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:50:19,948 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:50:19,949 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:50:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:50:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-07-25 08:50:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:50:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 08:50:19,963 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-07-25 08:50:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:19,963 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 08:50:19,964 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:50:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 08:50:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:50:19,964 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:19,964 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-07-25 08:50:19,965 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1364257681, now seen corresponding path program 23 times [2018-07-25 08:50:19,965 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:20,090 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:20,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:50:20,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:50:20,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:50:20,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:50:20,092 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-07-25 08:50:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:20,252 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-07-25 08:50:20,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:50:20,252 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:50:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:20,253 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:50:20,253 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:50:20,254 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:50:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:50:20,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:50:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:50:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 08:50:20,266 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 08:50:20,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:20,267 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 08:50:20,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:50:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 08:50:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:50:20,269 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:20,269 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-07-25 08:50:20,269 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:20,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1897217739, now seen corresponding path program 24 times [2018-07-25 08:50:20,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:20,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:20,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:50:20,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:50:20,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:50:20,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:50:20,336 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 18 states. [2018-07-25 08:50:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:20,417 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-07-25 08:50:20,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:50:20,417 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2018-07-25 08:50:20,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:20,418 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:50:20,418 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:50:20,419 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:50:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:50:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-07-25 08:50:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:50:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 08:50:20,431 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-25 08:50:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:20,431 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 08:50:20,431 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:50:20,432 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 08:50:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:50:20,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:20,432 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-25 08:50:20,432 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:20,433 INFO L82 PathProgramCache]: Analyzing trace with hash -2134920377, now seen corresponding path program 25 times [2018-07-25 08:50:20,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:20,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:20,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:50:20,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:50:20,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:50:20,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:50:20,550 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-07-25 08:50:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:20,731 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-25 08:50:20,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:50:20,731 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:50:20,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:20,732 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:50:20,732 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:50:20,734 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=477, Invalid=1415, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:50:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:50:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:50:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:50:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 08:50:20,749 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-25 08:50:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:20,749 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 08:50:20,749 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:50:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 08:50:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:50:20,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:20,750 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-07-25 08:50:20,750 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1286350463, now seen corresponding path program 26 times [2018-07-25 08:50:20,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:20,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:20,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:50:20,830 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:50:20,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:50:20,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:50:20,831 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 19 states. [2018-07-25 08:50:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:20,924 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 08:50:20,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:50:20,924 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2018-07-25 08:50:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:20,925 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:50:20,925 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:50:20,926 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:50:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:50:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-07-25 08:50:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:50:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 08:50:20,940 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 08:50:20,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:20,941 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 08:50:20,941 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:50:20,941 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 08:50:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:50:20,941 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:20,942 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-07-25 08:50:20,942 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:20,942 INFO L82 PathProgramCache]: Analyzing trace with hash 767719549, now seen corresponding path program 27 times [2018-07-25 08:50:20,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:21,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:50:21,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:50:21,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:50:21,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:50:21,063 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-07-25 08:50:21,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:21,253 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2018-07-25 08:50:21,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:50:21,253 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:50:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:21,254 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:50:21,254 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:50:21,256 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=541, Invalid=1621, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:50:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:50:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:50:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:50:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 08:50:21,271 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-07-25 08:50:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:21,272 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 08:50:21,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:50:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 08:50:21,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:50:21,272 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:21,273 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-07-25 08:50:21,273 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:21,273 INFO L82 PathProgramCache]: Analyzing trace with hash 285536695, now seen corresponding path program 28 times [2018-07-25 08:50:21,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:21,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:50:21,360 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:50:21,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:50:21,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:50:21,360 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 20 states. [2018-07-25 08:50:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:21,457 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-07-25 08:50:21,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:50:21,457 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2018-07-25 08:50:21,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:21,458 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:50:21,458 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:50:21,459 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:50:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:50:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-07-25 08:50:21,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:50:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 08:50:21,475 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-25 08:50:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:21,475 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 08:50:21,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:50:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 08:50:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:50:21,476 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:21,476 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-25 08:50:21,476 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash -477209805, now seen corresponding path program 29 times [2018-07-25 08:50:21,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:21,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:50:21,607 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:50:21,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:50:21,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:50:21,608 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-07-25 08:50:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:21,816 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-07-25 08:50:21,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:50:21,817 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:50:21,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:21,817 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:50:21,818 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:50:21,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=609, Invalid=1841, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:50:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:50:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:50:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:50:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 08:50:21,835 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 08:50:21,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:21,836 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 08:50:21,836 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:50:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 08:50:21,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:50:21,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:21,837 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-07-25 08:50:21,837 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:21,837 INFO L82 PathProgramCache]: Analyzing trace with hash 35497837, now seen corresponding path program 30 times [2018-07-25 08:50:21,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:21,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:50:21,936 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:50:21,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:50:21,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:50:21,937 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 21 states. [2018-07-25 08:50:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:22,039 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-07-25 08:50:22,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:50:22,040 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-07-25 08:50:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:22,040 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:50:22,041 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:50:22,042 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:50:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:50:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2018-07-25 08:50:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:50:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 08:50:22,058 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-07-25 08:50:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:22,058 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 08:50:22,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:50:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 08:50:22,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:50:22,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:22,059 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-07-25 08:50:22,059 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash -246383767, now seen corresponding path program 31 times [2018-07-25 08:50:22,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:22,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:22,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:50:22,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:50:22,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:50:22,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:50:22,205 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-07-25 08:50:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:22,423 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-07-25 08:50:22,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:50:22,424 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:50:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:22,424 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:50:22,425 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:50:22,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=681, Invalid=2075, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:50:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:50:22,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:50:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:50:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 08:50:22,450 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-07-25 08:50:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:22,450 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 08:50:22,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:50:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 08:50:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:50:22,454 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:22,454 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-07-25 08:50:22,454 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:22,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1653283491, now seen corresponding path program 32 times [2018-07-25 08:50:22,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:22,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:22,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:50:22,562 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:50:22,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:50:22,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:50:22,564 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 22 states. [2018-07-25 08:50:22,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:22,680 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 08:50:22,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:50:22,680 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2018-07-25 08:50:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:22,681 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:50:22,681 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:50:22,682 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:50:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:50:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-07-25 08:50:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:50:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 08:50:22,704 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 08:50:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:22,705 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 08:50:22,705 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:50:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 08:50:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:50:22,706 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:22,706 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-25 08:50:22,706 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash -332531425, now seen corresponding path program 33 times [2018-07-25 08:50:22,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:22,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:22,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:50:22,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:50:22,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:50:22,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:50:22,963 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-07-25 08:50:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:23,173 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2018-07-25 08:50:23,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:50:23,174 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:50:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:23,174 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:50:23,175 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:50:23,178 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=757, Invalid=2323, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:50:23,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:50:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:50:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:50:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 08:50:23,196 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-25 08:50:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:23,196 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 08:50:23,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:50:23,196 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 08:50:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:50:23,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:23,197 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-07-25 08:50:23,197 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash -198022311, now seen corresponding path program 34 times [2018-07-25 08:50:23,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:23,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:23,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:50:23,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:50:23,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:50:23,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:50:23,316 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 23 states. [2018-07-25 08:50:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:23,425 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-07-25 08:50:23,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:50:23,425 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2018-07-25 08:50:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:23,426 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:50:23,426 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:50:23,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:50:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:50:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-07-25 08:50:23,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:50:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 08:50:23,447 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-07-25 08:50:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:23,447 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 08:50:23,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:50:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 08:50:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:50:23,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:23,449 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-07-25 08:50:23,449 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:23,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1320946603, now seen corresponding path program 35 times [2018-07-25 08:50:23,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 342 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:23,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:23,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:50:23,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:50:23,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:50:23,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:50:23,604 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-07-25 08:50:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:23,852 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-25 08:50:23,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:50:23,853 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:50:23,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:23,854 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:50:23,854 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:50:23,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=837, Invalid=2585, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:50:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:50:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:50:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:50:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 08:50:23,877 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 08:50:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:23,878 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 08:50:23,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:50:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 08:50:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:50:23,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:23,879 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-07-25 08:50:23,879 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:23,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1626388879, now seen corresponding path program 36 times [2018-07-25 08:50:23,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:23,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:23,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:50:23,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:50:23,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:50:23,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:50:23,983 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 24 states. [2018-07-25 08:50:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:24,108 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-07-25 08:50:24,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:50:24,109 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2018-07-25 08:50:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:24,110 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:50:24,110 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:50:24,111 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:50:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:50:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-07-25 08:50:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:50:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 08:50:24,134 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-25 08:50:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:24,134 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 08:50:24,134 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:50:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 08:50:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:50:24,135 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:24,135 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-25 08:50:24,135 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:24,136 INFO L82 PathProgramCache]: Analyzing trace with hash -408449781, now seen corresponding path program 37 times [2018-07-25 08:50:24,136 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:24,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:24,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:50:24,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:50:24,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:50:24,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:50:24,301 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-07-25 08:50:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:24,565 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2018-07-25 08:50:24,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:50:24,565 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:50:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:24,566 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:50:24,566 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:50:24,569 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=921, Invalid=2861, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:50:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:50:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:50:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:50:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 08:50:24,592 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-25 08:50:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:24,593 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 08:50:24,593 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:50:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 08:50:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:50:24,594 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:24,594 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-07-25 08:50:24,594 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:24,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1130683067, now seen corresponding path program 38 times [2018-07-25 08:50:24,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:24,698 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:24,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:50:24,698 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:50:24,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:50:24,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:50:24,699 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 25 states. [2018-07-25 08:50:24,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:24,827 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 08:50:24,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:50:24,827 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 84 [2018-07-25 08:50:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:24,828 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:50:24,828 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:50:24,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:50:24,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:50:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-07-25 08:50:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:50:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 08:50:24,856 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 08:50:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:24,856 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 08:50:24,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:50:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 08:50:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:50:24,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:24,858 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-07-25 08:50:24,858 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:24,858 INFO L82 PathProgramCache]: Analyzing trace with hash 40231745, now seen corresponding path program 39 times [2018-07-25 08:50:24,858 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 420 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:25,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:25,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:50:25,037 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:50:25,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:50:25,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:50:25,038 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-07-25 08:50:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:25,261 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2018-07-25 08:50:25,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:50:25,261 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:50:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:25,262 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:50:25,263 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:50:25,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1009, Invalid=3151, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:50:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:50:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:50:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:50:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 08:50:25,290 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-07-25 08:50:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:25,291 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 08:50:25,291 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:50:25,291 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 08:50:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:50:25,292 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:25,292 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-07-25 08:50:25,292 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:25,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2030121349, now seen corresponding path program 40 times [2018-07-25 08:50:25,293 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:25,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:25,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:50:25,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:50:25,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:50:25,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:50:25,422 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 26 states. [2018-07-25 08:50:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:25,572 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-07-25 08:50:25,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:50:25,573 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 88 [2018-07-25 08:50:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:25,574 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:50:25,574 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:50:25,575 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:50:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:50:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2018-07-25 08:50:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:50:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 08:50:25,604 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-25 08:50:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:25,605 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 08:50:25,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:50:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 08:50:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:50:25,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:25,606 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-25 08:50:25,607 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:25,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1031530761, now seen corresponding path program 41 times [2018-07-25 08:50:25,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:25,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:25,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:50:25,831 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:50:25,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:50:25,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:50:25,833 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-07-25 08:50:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:26,242 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-07-25 08:50:26,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:50:26,242 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:50:26,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:26,243 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:50:26,243 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:50:26,246 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1101, Invalid=3455, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:50:26,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:50:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:50:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:50:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 08:50:26,271 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 08:50:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:26,271 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 08:50:26,271 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:50:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 08:50:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:50:26,272 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:26,272 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-07-25 08:50:26,272 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:26,273 INFO L82 PathProgramCache]: Analyzing trace with hash 769709361, now seen corresponding path program 42 times [2018-07-25 08:50:26,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:26,377 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:26,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:50:26,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:50:26,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:50:26,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:50:26,379 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 27 states. [2018-07-25 08:50:26,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:26,501 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-07-25 08:50:26,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:50:26,501 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 92 [2018-07-25 08:50:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:26,502 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:50:26,502 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:50:26,503 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:50:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:50:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-07-25 08:50:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:50:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 08:50:26,528 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-07-25 08:50:26,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:26,528 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 08:50:26,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:50:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 08:50:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:50:26,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:26,529 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-07-25 08:50:26,530 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:26,530 INFO L82 PathProgramCache]: Analyzing trace with hash 956254253, now seen corresponding path program 43 times [2018-07-25 08:50:26,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 506 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:26,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:26,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:50:26,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:50:26,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:50:26,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:50:26,704 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-07-25 08:50:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:27,010 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-07-25 08:50:27,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:50:27,010 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:50:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:27,011 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:50:27,011 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:50:27,013 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1197, Invalid=3773, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:50:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:50:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:50:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:50:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 08:50:27,038 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-07-25 08:50:27,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:27,039 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 08:50:27,039 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:50:27,039 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 08:50:27,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:50:27,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:27,040 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-07-25 08:50:27,040 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:27,040 INFO L82 PathProgramCache]: Analyzing trace with hash 251550055, now seen corresponding path program 44 times [2018-07-25 08:50:27,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:27,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:27,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:50:27,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:50:27,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:50:27,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:50:27,155 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 28 states. [2018-07-25 08:50:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:27,293 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 08:50:27,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:50:27,294 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 96 [2018-07-25 08:50:27,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:27,295 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:50:27,295 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:50:27,296 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:50:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:50:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-07-25 08:50:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:50:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 08:50:27,326 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 08:50:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:27,327 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 08:50:27,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:50:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 08:50:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:50:27,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:27,328 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-25 08:50:27,329 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:27,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1221367523, now seen corresponding path program 45 times [2018-07-25 08:50:27,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:27,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:27,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:50:27,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:50:27,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:50:27,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:50:27,515 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-07-25 08:50:27,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:27,863 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-25 08:50:27,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:50:27,863 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:50:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:27,864 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:50:27,864 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:50:27,866 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1297, Invalid=4105, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:50:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:50:27,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:50:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:50:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 08:50:27,897 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-25 08:50:27,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:27,897 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 08:50:27,897 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:50:27,897 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 08:50:27,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:50:27,898 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:27,898 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-07-25 08:50:27,899 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:27,899 INFO L82 PathProgramCache]: Analyzing trace with hash -99845347, now seen corresponding path program 46 times [2018-07-25 08:50:27,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:28,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:28,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:50:28,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:50:28,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:50:28,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:50:28,013 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 29 states. [2018-07-25 08:50:28,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:28,154 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-07-25 08:50:28,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:50:28,154 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2018-07-25 08:50:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:28,155 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:50:28,155 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:50:28,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:50:28,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:50:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-07-25 08:50:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:50:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 08:50:28,189 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-07-25 08:50:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:28,189 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 08:50:28,190 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:50:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 08:50:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:50:28,191 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:28,191 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-07-25 08:50:28,191 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:28,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1462164711, now seen corresponding path program 47 times [2018-07-25 08:50:28,191 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:28,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:28,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:50:28,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:50:28,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:50:28,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:50:28,394 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-07-25 08:50:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:28,720 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-07-25 08:50:28,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:50:28,720 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:50:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:28,722 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:50:28,722 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:50:28,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1401, Invalid=4451, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:50:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:50:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:50:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:50:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 08:50:28,757 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 08:50:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:28,757 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 08:50:28,758 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:50:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 08:50:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:50:28,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:28,759 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-07-25 08:50:28,760 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:28,760 INFO L82 PathProgramCache]: Analyzing trace with hash 850942547, now seen corresponding path program 48 times [2018-07-25 08:50:28,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:28,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:28,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:50:28,881 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:50:28,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:50:28,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:50:28,882 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 30 states. [2018-07-25 08:50:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:29,042 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-07-25 08:50:29,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:50:29,043 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 104 [2018-07-25 08:50:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:29,044 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:50:29,044 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:50:29,045 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:50:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:50:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2018-07-25 08:50:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:50:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 08:50:29,080 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-25 08:50:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:29,081 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 08:50:29,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:50:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 08:50:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:50:29,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:29,082 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-25 08:50:29,082 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:29,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1711934671, now seen corresponding path program 49 times [2018-07-25 08:50:29,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:29,326 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:29,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:50:29,327 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:50:29,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:50:29,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:50:29,329 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-07-25 08:50:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:29,712 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-07-25 08:50:29,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:50:29,712 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:50:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:29,713 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:50:29,713 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:50:29,715 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1509, Invalid=4811, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:50:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:50:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:50:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:50:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 08:50:29,748 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-25 08:50:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:29,748 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 08:50:29,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:50:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 08:50:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:50:29,751 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:29,751 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-07-25 08:50:29,751 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:29,751 INFO L82 PathProgramCache]: Analyzing trace with hash -223930615, now seen corresponding path program 50 times [2018-07-25 08:50:29,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:29,866 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:29,866 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:50:29,866 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:50:29,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:50:29,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:50:29,868 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 31 states. [2018-07-25 08:50:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:30,007 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 08:50:30,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:50:30,008 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2018-07-25 08:50:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:30,009 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:50:30,009 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:50:30,010 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:50:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:50:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-07-25 08:50:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:50:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 08:50:30,041 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 08:50:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:30,041 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 08:50:30,041 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:50:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 08:50:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:50:30,042 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:30,043 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-07-25 08:50:30,043 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:30,043 INFO L82 PathProgramCache]: Analyzing trace with hash -449022971, now seen corresponding path program 51 times [2018-07-25 08:50:30,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 702 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:30,233 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:30,233 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:50:30,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:50:30,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:50:30,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:50:30,235 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-07-25 08:50:30,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:30,624 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2018-07-25 08:50:30,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:50:30,624 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:50:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:30,625 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:50:30,625 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:50:30,626 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1621, Invalid=5185, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:50:30,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:50:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:50:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:50:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 08:50:30,661 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-07-25 08:50:30,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:30,662 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 08:50:30,662 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:50:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 08:50:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:50:30,663 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:30,663 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-07-25 08:50:30,664 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:30,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1802883391, now seen corresponding path program 52 times [2018-07-25 08:50:30,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:30,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:30,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:50:30,787 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:50:30,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:50:30,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:50:30,788 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 32 states. [2018-07-25 08:50:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:30,944 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-07-25 08:50:30,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:50:30,944 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 112 [2018-07-25 08:50:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:30,945 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:50:30,945 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:50:30,946 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:50:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:50:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-07-25 08:50:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:50:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 08:50:30,982 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-25 08:50:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:30,982 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 08:50:30,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:50:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 08:50:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:50:30,984 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:30,984 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-25 08:50:30,984 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:30,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1699051707, now seen corresponding path program 53 times [2018-07-25 08:50:30,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:31,185 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:31,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:50:31,185 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:50:31,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:50:31,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:50:31,187 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-07-25 08:50:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:31,513 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2018-07-25 08:50:31,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:50:31,513 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:50:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:31,514 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:50:31,514 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:50:31,516 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1737, Invalid=5573, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:50:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:50:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:50:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:50:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 08:50:31,547 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 08:50:31,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:31,547 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 08:50:31,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:50:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 08:50:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:50:31,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:31,549 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-07-25 08:50:31,549 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1220126965, now seen corresponding path program 54 times [2018-07-25 08:50:31,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:31,665 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:31,665 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:50:31,665 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:50:31,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:50:31,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:50:31,666 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 33 states. [2018-07-25 08:50:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:31,814 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-07-25 08:50:31,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:50:31,814 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 116 [2018-07-25 08:50:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:31,815 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:50:31,815 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:50:31,816 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:50:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:50:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-07-25 08:50:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:50:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 08:50:31,849 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-07-25 08:50:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:31,850 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 08:50:31,850 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:50:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 08:50:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:50:31,851 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:31,851 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-07-25 08:50:31,851 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:31,852 INFO L82 PathProgramCache]: Analyzing trace with hash 15874801, now seen corresponding path program 55 times [2018-07-25 08:50:31,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 812 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:32,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:32,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:50:32,058 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:50:32,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:50:32,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:50:32,060 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-07-25 08:50:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:32,395 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-25 08:50:32,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:50:32,395 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:50:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:32,397 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:50:32,397 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:50:32,398 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1857, Invalid=5975, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:50:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:50:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:50:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:50:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 08:50:32,432 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-07-25 08:50:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:32,433 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 08:50:32,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:50:32,433 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 08:50:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:50:32,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:32,434 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-07-25 08:50:32,434 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:32,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1308639701, now seen corresponding path program 56 times [2018-07-25 08:50:32,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:32,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:32,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:50:32,638 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:50:32,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:50:32,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:50:32,639 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 34 states. [2018-07-25 08:50:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:32,820 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 08:50:32,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:50:32,821 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 120 [2018-07-25 08:50:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:32,822 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:50:32,822 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:50:32,823 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:50:32,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:50:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2018-07-25 08:50:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:50:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 08:50:32,867 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 08:50:32,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:32,868 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 08:50:32,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:50:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 08:50:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:50:32,869 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:32,869 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-25 08:50:32,870 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:32,870 INFO L82 PathProgramCache]: Analyzing trace with hash 822598311, now seen corresponding path program 57 times [2018-07-25 08:50:32,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:33,158 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:33,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:50:33,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:50:33,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:50:33,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:50:33,161 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-07-25 08:50:33,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:33,682 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2018-07-25 08:50:33,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:50:33,682 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:50:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:33,684 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:50:33,684 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:50:33,685 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1981, Invalid=6391, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:50:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:50:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:50:33,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:50:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 08:50:33,723 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-25 08:50:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:33,723 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 08:50:33,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:50:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 08:50:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:50:33,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:33,725 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-07-25 08:50:33,725 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:33,725 INFO L82 PathProgramCache]: Analyzing trace with hash -858967839, now seen corresponding path program 58 times [2018-07-25 08:50:33,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:33,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:33,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:50:33,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:50:33,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:50:33,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:50:33,855 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 35 states. [2018-07-25 08:50:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:34,016 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-07-25 08:50:34,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:50:34,017 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 124 [2018-07-25 08:50:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:34,018 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:50:34,018 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:50:34,019 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:50:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:50:34,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-07-25 08:50:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:50:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 08:50:34,061 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-07-25 08:50:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:34,062 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 08:50:34,062 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:50:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 08:50:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:50:34,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:34,064 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-07-25 08:50:34,064 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:34,064 INFO L82 PathProgramCache]: Analyzing trace with hash -834439203, now seen corresponding path program 59 times [2018-07-25 08:50:34,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 930 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:34,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:34,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:50:34,297 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:50:34,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:50:34,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:50:34,298 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-07-25 08:50:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:34,681 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2018-07-25 08:50:34,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:50:34,681 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:50:34,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:34,682 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:50:34,683 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:50:34,684 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2109, Invalid=6821, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:50:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:50:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:50:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:50:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 08:50:34,723 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 08:50:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:34,723 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 08:50:34,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:50:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 08:50:34,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:50:34,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:34,725 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-07-25 08:50:34,725 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:34,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1096867561, now seen corresponding path program 60 times [2018-07-25 08:50:34,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:34,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:34,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:50:34,857 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:50:34,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:50:34,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:50:34,858 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 36 states. [2018-07-25 08:50:35,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:35,030 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-07-25 08:50:35,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:50:35,030 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 128 [2018-07-25 08:50:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:35,031 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:50:35,031 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:50:35,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:50:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:50:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2018-07-25 08:50:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:50:35,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 08:50:35,074 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-25 08:50:35,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:35,074 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 08:50:35,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:50:35,074 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 08:50:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:50:35,076 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:35,076 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-25 08:50:35,076 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1822805357, now seen corresponding path program 61 times [2018-07-25 08:50:35,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:35,313 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:35,313 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:50:35,313 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:50:35,314 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:50:35,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:50:35,315 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-07-25 08:50:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:35,779 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2018-07-25 08:50:35,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:50:35,779 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:50:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:35,781 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:50:35,781 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:50:35,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2241, Invalid=7265, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:50:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:50:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:50:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:50:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 08:50:35,833 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-25 08:50:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:35,834 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 08:50:35,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:50:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 08:50:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:50:35,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:35,838 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-07-25 08:50:35,838 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:35,838 INFO L82 PathProgramCache]: Analyzing trace with hash 787132109, now seen corresponding path program 62 times [2018-07-25 08:50:35,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1056 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:36,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:36,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:50:36,024 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:50:36,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:50:36,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:50:36,025 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 37 states. [2018-07-25 08:50:36,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:36,240 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 08:50:36,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:50:36,240 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 132 [2018-07-25 08:50:36,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:36,241 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:50:36,241 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:50:36,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:50:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:50:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-07-25 08:50:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:50:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 08:50:36,285 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 08:50:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:36,286 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 08:50:36,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:50:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 08:50:36,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:50:36,288 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:36,288 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-07-25 08:50:36,288 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 519645897, now seen corresponding path program 63 times [2018-07-25 08:50:36,288 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1056 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:36,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:36,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:50:36,517 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:50:36,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:50:36,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:50:36,518 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-07-25 08:50:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:37,007 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2018-07-25 08:50:37,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:50:37,007 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:50:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:37,009 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:50:37,009 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:50:37,010 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2377, Invalid=7723, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:50:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:50:37,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:50:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:50:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 08:50:37,051 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-07-25 08:50:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:37,051 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 08:50:37,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:50:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 08:50:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:50:37,053 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:37,053 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-07-25 08:50:37,053 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1226635779, now seen corresponding path program 64 times [2018-07-25 08:50:37,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1122 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:37,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:37,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:50:37,188 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:50:37,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:50:37,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:50:37,189 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 38 states. [2018-07-25 08:50:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:37,347 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-07-25 08:50:37,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:50:37,347 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 136 [2018-07-25 08:50:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:37,349 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:50:37,349 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:50:37,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1927, Invalid=3185, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:50:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:50:37,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-07-25 08:50:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:50:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 08:50:37,391 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-25 08:50:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:37,392 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 08:50:37,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:50:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 08:50:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:50:37,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:37,393 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-25 08:50:37,394 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:37,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1975877759, now seen corresponding path program 65 times [2018-07-25 08:50:37,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1122 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:37,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:37,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:50:37,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:50:37,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:50:37,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:50:37,628 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-07-25 08:50:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:38,044 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-25 08:50:38,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:50:38,044 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:50:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:38,045 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:50:38,045 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:50:38,047 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2517, Invalid=8195, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:50:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:50:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:50:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:50:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 08:50:38,089 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 08:50:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:38,089 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 08:50:38,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:50:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 08:50:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:50:38,091 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:38,091 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-07-25 08:50:38,091 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1050354361, now seen corresponding path program 66 times [2018-07-25 08:50:38,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1190 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:38,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:38,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:50:38,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:50:38,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:50:38,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:50:38,240 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 39 states. [2018-07-25 08:50:38,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:38,411 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-07-25 08:50:38,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:50:38,412 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 140 [2018-07-25 08:50:38,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:38,413 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:50:38,413 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:50:38,414 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:50:38,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:50:38,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2018-07-25 08:50:38,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:50:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 08:50:38,460 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-07-25 08:50:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:38,461 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 08:50:38,461 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:50:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 08:50:38,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:50:38,462 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:38,464 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-07-25 08:50:38,464 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:38,465 INFO L82 PathProgramCache]: Analyzing trace with hash 73159605, now seen corresponding path program 67 times [2018-07-25 08:50:38,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1190 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:38,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:38,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:50:38,712 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:50:38,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:50:38,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:50:38,714 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-07-25 08:50:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:39,173 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2018-07-25 08:50:39,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:50:39,174 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:50:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:39,177 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:50:39,177 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:50:39,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2661, Invalid=8681, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:50:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:50:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:50:39,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:50:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 08:50:39,257 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-07-25 08:50:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:39,258 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 08:50:39,258 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:50:39,258 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 08:50:39,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:50:39,259 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:39,260 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-07-25 08:50:39,260 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:39,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1220692207, now seen corresponding path program 68 times [2018-07-25 08:50:39,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1260 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:39,401 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:39,401 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:50:39,401 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:50:39,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:50:39,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:50:39,402 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 40 states. [2018-07-25 08:50:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:39,571 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 08:50:39,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:50:39,571 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2018-07-25 08:50:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:39,573 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:50:39,573 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:50:39,574 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:50:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:50:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2018-07-25 08:50:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:50:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 08:50:39,622 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 08:50:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:39,623 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 08:50:39,623 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:50:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 08:50:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:50:39,624 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:39,624 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-25 08:50:39,625 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:39,625 INFO L82 PathProgramCache]: Analyzing trace with hash 559072363, now seen corresponding path program 69 times [2018-07-25 08:50:39,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1260 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:39,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:39,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:50:39,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:50:39,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:50:39,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:50:39,874 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-07-25 08:50:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:40,443 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2018-07-25 08:50:40,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:50:40,443 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:50:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:40,445 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:50:40,445 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:50:40,448 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2809, Invalid=9181, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:50:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:50:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:50:40,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:50:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 08:50:40,500 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-25 08:50:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:40,500 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 08:50:40,500 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:50:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 08:50:40,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:50:40,502 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:40,503 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-07-25 08:50:40,503 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:40,503 INFO L82 PathProgramCache]: Analyzing trace with hash 719817893, now seen corresponding path program 70 times [2018-07-25 08:50:40,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1332 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:40,668 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:40,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:50:40,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:50:40,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:50:40,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:50:40,670 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 41 states. [2018-07-25 08:50:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:40,848 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-07-25 08:50:40,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:50:40,848 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 148 [2018-07-25 08:50:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:40,849 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:50:40,849 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:50:40,850 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:50:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:50:40,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2018-07-25 08:50:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:50:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 08:50:40,897 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-07-25 08:50:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:40,897 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 08:50:40,897 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:50:40,897 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 08:50:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:50:40,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:40,899 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-07-25 08:50:40,899 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:40,899 INFO L82 PathProgramCache]: Analyzing trace with hash 255193761, now seen corresponding path program 71 times [2018-07-25 08:50:40,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1332 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:41,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:41,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:50:41,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:50:41,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:50:41,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:50:41,155 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-07-25 08:50:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:41,673 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-07-25 08:50:41,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:50:41,674 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:50:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:41,675 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:50:41,675 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:50:41,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2961, Invalid=9695, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:50:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:50:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:50:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:50:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 08:50:41,721 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 08:50:41,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:41,722 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 08:50:41,722 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:50:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 08:50:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:50:41,723 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:41,723 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-07-25 08:50:41,723 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash 878185947, now seen corresponding path program 72 times [2018-07-25 08:50:41,724 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1406 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:41,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:41,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:50:41,891 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:50:41,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:50:41,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:50:41,892 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 42 states. [2018-07-25 08:50:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:42,083 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-07-25 08:50:42,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:50:42,084 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 152 [2018-07-25 08:50:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:42,085 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:50:42,085 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:50:42,086 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:50:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:50:42,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-07-25 08:50:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:50:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 08:50:42,142 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-25 08:50:42,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:42,143 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 08:50:42,143 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:50:42,143 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 08:50:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:50:42,144 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:42,144 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-25 08:50:42,145 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:42,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2123038295, now seen corresponding path program 73 times [2018-07-25 08:50:42,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1406 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:42,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:42,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:50:42,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:50:42,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:50:42,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:50:42,514 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-07-25 08:50:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:43,131 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2018-07-25 08:50:43,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:50:43,131 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:50:43,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:43,132 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:50:43,132 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:50:43,133 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3117, Invalid=10223, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:50:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:50:43,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:50:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:50:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 08:50:43,177 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-25 08:50:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:43,177 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 08:50:43,177 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:50:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 08:50:43,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:50:43,178 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:43,178 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-07-25 08:50:43,179 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:43,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1034359663, now seen corresponding path program 74 times [2018-07-25 08:50:43,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1482 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:43,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:43,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:50:43,336 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:50:43,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:50:43,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:50:43,337 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 43 states. [2018-07-25 08:50:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:43,496 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 08:50:43,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:50:43,496 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 156 [2018-07-25 08:50:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:43,498 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:50:43,499 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:50:43,499 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:50:43,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:50:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-07-25 08:50:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:50:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 08:50:43,539 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 08:50:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:43,539 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 08:50:43,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:50:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 08:50:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:50:43,541 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:43,541 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-07-25 08:50:43,541 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:43,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1882257523, now seen corresponding path program 75 times [2018-07-25 08:50:43,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1482 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:43,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:43,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:50:43,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:50:43,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:50:43,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:50:43,810 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-07-25 08:50:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:44,295 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-25 08:50:44,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:50:44,295 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:50:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:44,296 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:50:44,297 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:50:44,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3277, Invalid=10765, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:50:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:50:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:50:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:50:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 08:50:44,336 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-07-25 08:50:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:44,336 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 08:50:44,336 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:50:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 08:50:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:50:44,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:44,337 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-07-25 08:50:44,338 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:44,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1109870791, now seen corresponding path program 76 times [2018-07-25 08:50:44,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1560 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:44,494 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:44,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:50:44,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:50:44,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:50:44,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:50:44,496 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 44 states. [2018-07-25 08:50:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:44,668 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-07-25 08:50:44,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:50:44,669 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 160 [2018-07-25 08:50:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:44,670 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:50:44,670 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:50:44,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2626, Invalid=4346, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:50:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:50:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2018-07-25 08:50:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:50:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 08:50:44,722 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-25 08:50:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:44,723 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 08:50:44,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:50:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 08:50:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:50:44,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:44,724 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-25 08:50:44,724 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:44,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1433873987, now seen corresponding path program 77 times [2018-07-25 08:50:44,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1560 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:44,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:44,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:50:44,952 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:50:44,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:50:44,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:50:44,953 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-07-25 08:50:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:45,467 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2018-07-25 08:50:45,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:50:45,467 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:50:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:45,468 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:50:45,468 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:50:45,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3441, Invalid=11321, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:50:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:50:45,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:50:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:50:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 08:50:45,522 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 08:50:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:45,523 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 08:50:45,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:50:45,523 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 08:50:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:50:45,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:45,524 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-07-25 08:50:45,524 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:45,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1292352899, now seen corresponding path program 78 times [2018-07-25 08:50:45,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1640 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:45,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:45,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:50:45,698 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:50:45,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:50:45,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:50:45,699 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 45 states. [2018-07-25 08:50:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:45,845 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-07-25 08:50:45,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:50:45,846 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 164 [2018-07-25 08:50:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:45,847 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:50:45,847 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:50:45,847 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:50:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:50:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2018-07-25 08:50:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:50:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 08:50:45,885 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-07-25 08:50:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:45,885 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 08:50:45,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:50:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 08:50:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:50:45,885 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:45,886 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-07-25 08:50:45,886 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:45,886 INFO L82 PathProgramCache]: Analyzing trace with hash -705654151, now seen corresponding path program 79 times [2018-07-25 08:50:45,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1640 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:46,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:46,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:50:46,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:50:46,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:50:46,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:50:46,202 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-07-25 08:50:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:46,727 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2018-07-25 08:50:46,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:50:46,727 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:50:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:46,728 INFO L225 Difference]: With dead ends: 254 [2018-07-25 08:50:46,729 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:50:46,730 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3609, Invalid=11891, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:50:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:50:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:50:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:50:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 08:50:46,778 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-07-25 08:50:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:46,778 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 08:50:46,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:50:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 08:50:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:50:46,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:46,780 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-07-25 08:50:46,780 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1476855373, now seen corresponding path program 80 times [2018-07-25 08:50:46,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1722 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:46,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:46,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:50:46,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:50:46,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:50:46,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:50:46,928 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 46 states. [2018-07-25 08:50:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:47,082 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 08:50:47,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:50:47,082 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 168 [2018-07-25 08:50:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:47,083 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:50:47,083 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:50:47,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:50:47,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:50:47,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2018-07-25 08:50:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:50:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 08:50:47,121 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 08:50:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:47,121 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 08:50:47,121 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:50:47,121 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 08:50:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:50:47,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:47,122 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-25 08:50:47,122 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1918872529, now seen corresponding path program 81 times [2018-07-25 08:50:47,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1722 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:47,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:47,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:50:47,323 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:50:47,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:50:47,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:50:47,324 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-07-25 08:50:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:47,776 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-07-25 08:50:47,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:50:47,776 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:50:47,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:47,777 INFO L225 Difference]: With dead ends: 260 [2018-07-25 08:50:47,777 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:50:47,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3781, Invalid=12475, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:50:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:50:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:50:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:50:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 08:50:47,818 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-25 08:50:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:47,818 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 08:50:47,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:50:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 08:50:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:50:47,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:47,819 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-07-25 08:50:47,819 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:47,819 INFO L82 PathProgramCache]: Analyzing trace with hash -900821399, now seen corresponding path program 82 times [2018-07-25 08:50:47,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1806 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:47,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:47,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:50:47,940 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:50:47,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:50:47,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:50:47,941 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 47 states. [2018-07-25 08:50:48,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:48,116 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-07-25 08:50:48,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:50:48,116 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 172 [2018-07-25 08:50:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:48,117 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:50:48,117 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:50:48,118 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:50:48,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:50:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-07-25 08:50:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:50:48,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 08:50:48,158 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-07-25 08:50:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:48,158 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 08:50:48,158 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:50:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 08:50:48,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:50:48,159 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:48,159 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-07-25 08:50:48,160 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:48,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1893962597, now seen corresponding path program 83 times [2018-07-25 08:50:48,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1806 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:48,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:48,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:50:48,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:50:48,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:50:48,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:50:48,371 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-07-25 08:50:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:48,968 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2018-07-25 08:50:48,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:50:48,968 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:50:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:48,969 INFO L225 Difference]: With dead ends: 266 [2018-07-25 08:50:48,969 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:50:48,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3957, Invalid=13073, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:50:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:50:49,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:50:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:50:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 08:50:49,011 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 08:50:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:49,011 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 08:50:49,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:50:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 08:50:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:50:49,012 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:49,012 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-07-25 08:50:49,013 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:49,013 INFO L82 PathProgramCache]: Analyzing trace with hash -619306849, now seen corresponding path program 84 times [2018-07-25 08:50:49,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1892 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:49,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:49,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:50:49,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:50:49,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:50:49,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:50:49,134 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 48 states. [2018-07-25 08:50:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:49,275 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-07-25 08:50:49,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:50:49,275 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 176 [2018-07-25 08:50:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:49,276 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:50:49,277 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:50:49,278 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:50:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:50:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-07-25 08:50:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:50:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 08:50:49,321 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-25 08:50:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:49,321 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 08:50:49,322 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:50:49,322 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 08:50:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:50:49,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:49,323 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-25 08:50:49,323 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1846505499, now seen corresponding path program 85 times [2018-07-25 08:50:49,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1892 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:49,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:49,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:50:49,546 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:50:49,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:50:49,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:50:49,548 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-07-25 08:50:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:50,022 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-25 08:50:50,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:50:50,022 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:50:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:50,023 INFO L225 Difference]: With dead ends: 272 [2018-07-25 08:50:50,023 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:50:50,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4137, Invalid=13685, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:50:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:50:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:50:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:50:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 08:50:50,066 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-25 08:50:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:50,066 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 08:50:50,066 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:50:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 08:50:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:50:50,068 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:50,068 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-07-25 08:50:50,068 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:50,068 INFO L82 PathProgramCache]: Analyzing trace with hash 895799381, now seen corresponding path program 86 times [2018-07-25 08:50:50,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1980 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:50,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:50,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:50:50,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:50:50,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:50:50,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:50:50,199 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 49 states. [2018-07-25 08:50:50,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:50,333 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 08:50:50,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:50:50,333 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 180 [2018-07-25 08:50:50,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:50,334 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:50:50,334 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:50:50,335 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:50:50,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:50:50,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-07-25 08:50:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:50:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 08:50:50,380 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 08:50:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:50,381 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 08:50:50,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:50:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 08:50:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:50:50,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:50,382 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-07-25 08:50:50,382 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:50,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1869679185, now seen corresponding path program 87 times [2018-07-25 08:50:50,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1980 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:50,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:50,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:50:50,634 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:50:50,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:50:50,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:50:50,636 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-07-25 08:50:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:51,179 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-07-25 08:50:51,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:50:51,179 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:50:51,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:51,180 INFO L225 Difference]: With dead ends: 278 [2018-07-25 08:50:51,180 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:50:51,182 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4321, Invalid=14311, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:50:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:50:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:50:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:50:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 08:50:51,228 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-07-25 08:50:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:51,229 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 08:50:51,229 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:50:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 08:50:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:50:51,230 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:51,230 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-07-25 08:50:51,230 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:51,230 INFO L82 PathProgramCache]: Analyzing trace with hash -800604789, now seen corresponding path program 88 times [2018-07-25 08:50:51,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 2070 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:51,419 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:51,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:50:51,419 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:50:51,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:50:51,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:50:51,420 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 50 states. [2018-07-25 08:50:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:51,556 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-07-25 08:50:51,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:50:51,556 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 184 [2018-07-25 08:50:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:51,557 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:50:51,557 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:50:51,558 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:50:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:50:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2018-07-25 08:50:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:50:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 08:50:51,610 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-25 08:50:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:51,611 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 08:50:51,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:50:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 08:50:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:50:51,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:51,612 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-25 08:50:51,612 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:51,612 INFO L82 PathProgramCache]: Analyzing trace with hash -582123001, now seen corresponding path program 89 times [2018-07-25 08:50:51,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2070 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:51,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:51,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:50:51,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:50:51,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:50:51,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:50:51,879 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-07-25 08:50:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:52,418 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2018-07-25 08:50:52,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:50:52,418 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:50:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:52,419 INFO L225 Difference]: With dead ends: 284 [2018-07-25 08:50:52,419 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:50:52,421 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4509, Invalid=14951, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:50:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:50:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:50:52,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:50:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 08:50:52,490 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 08:50:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:52,490 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 08:50:52,490 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:50:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 08:50:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:50:52,491 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:52,491 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-07-25 08:50:52,492 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:52,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1060894655, now seen corresponding path program 90 times [2018-07-25 08:50:52,492 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2162 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:52,716 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:52,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:50:52,716 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:50:52,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:50:52,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:50:52,718 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 51 states. [2018-07-25 08:50:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:52,956 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-07-25 08:50:52,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:50:52,956 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 188 [2018-07-25 08:50:52,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:52,957 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:50:52,957 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:50:52,958 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:50:52,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:50:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2018-07-25 08:50:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:50:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 08:50:53,002 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-07-25 08:50:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:53,002 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 08:50:53,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:50:53,002 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 08:50:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:50:53,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:53,003 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-07-25 08:50:53,003 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:53,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1612581059, now seen corresponding path program 91 times [2018-07-25 08:50:53,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2162 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:53,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:53,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:50:53,261 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:50:53,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:50:53,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:50:53,262 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-07-25 08:50:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:53,946 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2018-07-25 08:50:53,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:50:53,946 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:50:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:53,947 INFO L225 Difference]: With dead ends: 290 [2018-07-25 08:50:53,947 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:50:53,949 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4701, Invalid=15605, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:50:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:50:53,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:50:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:50:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 08:50:54,000 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-07-25 08:50:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:54,000 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 08:50:54,000 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:50:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 08:50:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:50:54,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:54,001 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-07-25 08:50:54,001 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:54,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1003933815, now seen corresponding path program 92 times [2018-07-25 08:50:54,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2256 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:54,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:54,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:50:54,170 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:50:54,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:50:54,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:50:54,171 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 52 states. [2018-07-25 08:50:54,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:54,360 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 08:50:54,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:50:54,360 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 192 [2018-07-25 08:50:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:54,361 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:50:54,361 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:50:54,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:50:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:50:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-07-25 08:50:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:50:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 08:50:54,425 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 08:50:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:54,426 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 08:50:54,426 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:50:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 08:50:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:50:54,427 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:54,427 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-25 08:50:54,428 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:54,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1587312141, now seen corresponding path program 93 times [2018-07-25 08:50:54,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2256 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:54,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:54,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:50:54,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:50:54,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:50:54,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:50:54,864 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-07-25 08:50:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:55,459 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2018-07-25 08:50:55,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:50:55,459 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:50:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:55,460 INFO L225 Difference]: With dead ends: 296 [2018-07-25 08:50:55,460 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:50:55,461 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4897, Invalid=16273, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:50:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:50:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:50:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:50:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 08:50:55,513 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-25 08:50:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:55,513 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 08:50:55,513 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:50:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 08:50:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:50:55,514 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:55,514 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-07-25 08:50:55,514 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:55,514 INFO L82 PathProgramCache]: Analyzing trace with hash 410334765, now seen corresponding path program 94 times [2018-07-25 08:50:55,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2352 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:55,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:55,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:50:55,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:50:55,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:50:55,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:50:55,676 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 53 states. [2018-07-25 08:50:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:55,846 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-07-25 08:50:55,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:50:55,846 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 196 [2018-07-25 08:50:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:55,847 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:50:55,847 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:50:55,848 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:50:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:50:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-07-25 08:50:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:50:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 08:50:55,902 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-07-25 08:50:55,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:55,902 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 08:50:55,902 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:50:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 08:50:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:50:55,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:55,904 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-07-25 08:50:55,904 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash -805348823, now seen corresponding path program 95 times [2018-07-25 08:50:55,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2352 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:56,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:56,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:50:56,211 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:50:56,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:50:56,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:50:56,213 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-07-25 08:50:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:56,974 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-25 08:50:56,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:50:56,974 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:50:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:56,975 INFO L225 Difference]: With dead ends: 302 [2018-07-25 08:50:56,975 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:50:56,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5097, Invalid=16955, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:50:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:50:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:50:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:50:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 08:50:57,028 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 08:50:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:57,028 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 08:50:57,028 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:50:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 08:50:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:50:57,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:57,029 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-07-25 08:50:57,030 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash -779331229, now seen corresponding path program 96 times [2018-07-25 08:50:57,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2450 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:57,180 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:57,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:50:57,181 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:50:57,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:50:57,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:50:57,182 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 54 states. [2018-07-25 08:50:57,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:57,393 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-07-25 08:50:57,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:50:57,394 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 200 [2018-07-25 08:50:57,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:57,395 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:50:57,395 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:50:57,396 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:50:57,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:50:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2018-07-25 08:50:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:50:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 08:50:57,456 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-25 08:50:57,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:57,457 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 08:50:57,457 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:50:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 08:50:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:50:57,458 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:57,458 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-25 08:50:57,458 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:57,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1613068321, now seen corresponding path program 97 times [2018-07-25 08:50:57,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2450 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:57,792 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:57,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:50:57,792 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:50:57,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:50:57,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:50:57,794 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-07-25 08:50:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:58,519 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2018-07-25 08:50:58,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:50:58,519 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:50:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:58,520 INFO L225 Difference]: With dead ends: 308 [2018-07-25 08:50:58,520 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:50:58,521 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5301, Invalid=17651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:50:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:50:58,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:50:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:50:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 08:50:58,571 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-25 08:50:58,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:58,571 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 08:50:58,571 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:50:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 08:50:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:50:58,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:58,572 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-07-25 08:50:58,572 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:58,572 INFO L82 PathProgramCache]: Analyzing trace with hash 134306329, now seen corresponding path program 98 times [2018-07-25 08:50:58,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2550 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:58,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:58,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:50:58,748 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:50:58,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:50:58,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:50:58,749 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 55 states. [2018-07-25 08:50:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:58,936 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 08:50:58,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:50:58,936 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 204 [2018-07-25 08:50:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:58,937 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:50:58,937 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:50:58,939 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:50:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:50:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-07-25 08:50:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:50:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 08:50:58,995 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 08:50:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:58,995 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 08:50:58,995 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:50:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 08:50:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:50:58,996 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:58,996 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-07-25 08:50:58,996 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 219296533, now seen corresponding path program 99 times [2018-07-25 08:50:58,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2550 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:59,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:59,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:50:59,322 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:50:59,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:50:59,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:50:59,324 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-07-25 08:50:59,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:59,820 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-07-25 08:50:59,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:50:59,820 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:50:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:59,821 INFO L225 Difference]: With dead ends: 314 [2018-07-25 08:50:59,821 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:50:59,824 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5509, Invalid=18361, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:50:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:50:59,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:50:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:50:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 08:50:59,884 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-07-25 08:50:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:59,884 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 08:50:59,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:50:59,884 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 08:50:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:50:59,885 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:59,885 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-07-25 08:50:59,885 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:59,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2068752305, now seen corresponding path program 100 times [2018-07-25 08:50:59,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2652 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:00,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:00,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:51:00,094 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:51:00,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:51:00,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:51:00,095 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 56 states. [2018-07-25 08:51:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:00,348 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-07-25 08:51:00,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:51:00,348 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 208 [2018-07-25 08:51:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:00,349 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:51:00,349 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:51:00,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4348, Invalid=7208, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:51:00,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:51:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-07-25 08:51:00,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:51:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 08:51:00,405 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-25 08:51:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:00,405 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 08:51:00,405 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:51:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 08:51:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:51:00,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:00,407 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-25 08:51:00,407 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash 498826187, now seen corresponding path program 101 times [2018-07-25 08:51:00,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2652 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:00,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:00,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:51:00,710 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:51:00,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:51:00,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:51:00,711 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-07-25 08:51:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:01,688 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2018-07-25 08:51:01,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:51:01,688 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:51:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:01,689 INFO L225 Difference]: With dead ends: 320 [2018-07-25 08:51:01,689 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:51:01,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5721, Invalid=19085, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:51:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:51:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:51:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:51:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 08:51:01,783 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 08:51:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:01,784 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 08:51:01,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:51:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 08:51:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:51:01,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:01,786 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-07-25 08:51:01,786 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:01,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1166969851, now seen corresponding path program 102 times [2018-07-25 08:51:01,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2756 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:02,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:02,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:51:02,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:51:02,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:51:02,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:51:02,096 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 57 states. [2018-07-25 08:51:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:02,305 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-07-25 08:51:02,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:51:02,305 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 212 [2018-07-25 08:51:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:02,306 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:51:02,306 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:51:02,308 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:51:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:51:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-07-25 08:51:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:51:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 08:51:02,366 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-07-25 08:51:02,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:02,366 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 08:51:02,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:51:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 08:51:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:51:02,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:02,367 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-07-25 08:51:02,367 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:02,367 INFO L82 PathProgramCache]: Analyzing trace with hash -471629311, now seen corresponding path program 103 times [2018-07-25 08:51:02,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 2756 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:02,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:02,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:51:02,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:51:02,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:51:02,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:51:02,677 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-07-25 08:51:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:03,475 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2018-07-25 08:51:03,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:51:03,475 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:51:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:03,476 INFO L225 Difference]: With dead ends: 326 [2018-07-25 08:51:03,476 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:51:03,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5937, Invalid=19823, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:51:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:51:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:51:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:51:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 08:51:03,534 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-07-25 08:51:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:03,534 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 08:51:03,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:51:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 08:51:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:51:03,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:03,535 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-07-25 08:51:03,535 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:03,536 INFO L82 PathProgramCache]: Analyzing trace with hash -938554053, now seen corresponding path program 104 times [2018-07-25 08:51:03,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2862 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:03,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:03,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:51:03,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:51:03,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:51:03,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:51:03,721 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 58 states. [2018-07-25 08:51:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:03,919 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 08:51:03,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:51:03,919 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 216 [2018-07-25 08:51:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:03,920 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:51:03,920 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:51:03,922 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:51:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:51:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-07-25 08:51:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:51:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 08:51:03,982 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 08:51:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:03,983 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 08:51:03,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:51:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 08:51:03,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:51:03,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:03,983 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-25 08:51:03,984 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:03,984 INFO L82 PathProgramCache]: Analyzing trace with hash -7379529, now seen corresponding path program 105 times [2018-07-25 08:51:03,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2862 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:04,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:04,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:51:04,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:51:04,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:51:04,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:51:04,321 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-07-25 08:51:04,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:04,861 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-25 08:51:04,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:51:04,861 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:51:04,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:04,862 INFO L225 Difference]: With dead ends: 332 [2018-07-25 08:51:04,862 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:51:04,864 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6157, Invalid=20575, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:51:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:51:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:51:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:51:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 08:51:04,919 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-25 08:51:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:04,919 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 08:51:04,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:51:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 08:51:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:51:04,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:04,921 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-07-25 08:51:04,921 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:04,921 INFO L82 PathProgramCache]: Analyzing trace with hash -95517711, now seen corresponding path program 106 times [2018-07-25 08:51:04,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2970 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:05,176 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:05,177 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:51:05,177 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:51:05,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:51:05,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:51:05,177 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 59 states. [2018-07-25 08:51:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:05,376 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-07-25 08:51:05,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:51:05,376 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 220 [2018-07-25 08:51:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:05,377 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:51:05,377 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:51:05,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:51:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:51:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2018-07-25 08:51:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:51:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 08:51:05,435 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-07-25 08:51:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:05,435 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 08:51:05,435 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:51:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 08:51:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:51:05,436 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:05,437 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-07-25 08:51:05,437 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:05,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1598273811, now seen corresponding path program 107 times [2018-07-25 08:51:05,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2970 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:05,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:05,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:51:05,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:51:05,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:51:05,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:51:05,767 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-07-25 08:51:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:06,397 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2018-07-25 08:51:06,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:51:06,397 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:51:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:06,398 INFO L225 Difference]: With dead ends: 338 [2018-07-25 08:51:06,398 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:51:06,401 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6381, Invalid=21341, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:51:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:51:06,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:51:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:51:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 08:51:06,470 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 08:51:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:06,470 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 08:51:06,470 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:51:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 08:51:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:51:06,471 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:06,471 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-07-25 08:51:06,471 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:06,472 INFO L82 PathProgramCache]: Analyzing trace with hash -840058841, now seen corresponding path program 108 times [2018-07-25 08:51:06,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 3080 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:06,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:06,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:51:06,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:51:06,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:51:06,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:51:06,657 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 60 states. [2018-07-25 08:51:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:06,874 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-07-25 08:51:06,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:51:06,874 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 224 [2018-07-25 08:51:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:06,875 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:51:06,875 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:51:06,876 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:51:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:51:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2018-07-25 08:51:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:51:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 08:51:06,945 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-25 08:51:06,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:06,945 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 08:51:06,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:51:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 08:51:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:51:06,946 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:06,946 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-25 08:51:06,946 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:06,947 INFO L82 PathProgramCache]: Analyzing trace with hash 157238691, now seen corresponding path program 109 times [2018-07-25 08:51:06,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3080 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:07,339 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:07,339 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:51:07,339 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:51:07,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:51:07,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:51:07,341 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-07-25 08:51:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:07,827 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2018-07-25 08:51:07,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:51:07,827 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:51:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:07,828 INFO L225 Difference]: With dead ends: 344 [2018-07-25 08:51:07,828 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:51:07,831 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6609, Invalid=22121, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:51:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:51:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:51:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:51:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 08:51:07,890 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-25 08:51:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:07,890 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 08:51:07,890 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:51:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 08:51:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:51:07,891 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:07,892 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-07-25 08:51:07,892 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:07,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1906411997, now seen corresponding path program 110 times [2018-07-25 08:51:07,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3192 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:08,099 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:08,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:51:08,100 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:51:08,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:51:08,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:51:08,101 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 61 states. [2018-07-25 08:51:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:08,365 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 08:51:08,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:51:08,365 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 228 [2018-07-25 08:51:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:08,366 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:51:08,366 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:51:08,368 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:51:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:51:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-07-25 08:51:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:51:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 08:51:08,503 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 08:51:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:08,503 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 08:51:08,504 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:51:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 08:51:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:51:08,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:08,505 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-07-25 08:51:08,506 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1889173031, now seen corresponding path program 111 times [2018-07-25 08:51:08,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3192 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:09,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:09,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:51:09,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:51:09,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:51:09,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:51:09,134 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-07-25 08:51:09,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:09,770 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2018-07-25 08:51:09,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:51:09,770 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:51:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:09,771 INFO L225 Difference]: With dead ends: 350 [2018-07-25 08:51:09,771 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:51:09,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6841, Invalid=22915, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:51:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:51:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:51:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:51:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 08:51:09,832 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-07-25 08:51:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:09,832 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 08:51:09,833 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:51:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 08:51:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:51:09,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:09,833 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-07-25 08:51:09,833 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:09,834 INFO L82 PathProgramCache]: Analyzing trace with hash -938010349, now seen corresponding path program 112 times [2018-07-25 08:51:09,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3306 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:10,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:10,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:51:10,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:51:10,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:51:10,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:51:10,083 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 62 states. [2018-07-25 08:51:10,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:10,289 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2018-07-25 08:51:10,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:51:10,289 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 232 [2018-07-25 08:51:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:10,290 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:51:10,290 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:51:10,291 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3364 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5371, Invalid=8909, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:51:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:51:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 235. [2018-07-25 08:51:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:51:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 08:51:10,354 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-25 08:51:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:10,354 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 08:51:10,354 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:51:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 08:51:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:51:10,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:10,355 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-25 08:51:10,355 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:10,355 INFO L82 PathProgramCache]: Analyzing trace with hash 515120015, now seen corresponding path program 113 times [2018-07-25 08:51:10,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3306 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:10,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:10,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:51:10,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:51:10,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:51:10,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:51:10,734 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 118 states. [2018-07-25 08:51:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:11,408 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2018-07-25 08:51:11,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:51:11,408 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:51:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:11,408 INFO L225 Difference]: With dead ends: 356 [2018-07-25 08:51:11,409 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:51:11,411 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7077, Invalid=23723, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:51:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:51:11,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:51:11,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:51:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 08:51:11,483 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 08:51:11,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:11,483 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 08:51:11,483 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:51:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 08:51:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:51:11,484 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:11,484 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-07-25 08:51:11,484 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:11,484 INFO L82 PathProgramCache]: Analyzing trace with hash -369916471, now seen corresponding path program 114 times [2018-07-25 08:51:11,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3422 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:11,681 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:11,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:51:11,681 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:51:11,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:51:11,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:51:11,682 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 63 states. [2018-07-25 08:51:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:12,004 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-07-25 08:51:12,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:51:12,004 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 236 [2018-07-25 08:51:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:12,005 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:51:12,005 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:51:12,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:51:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:51:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-07-25 08:51:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:51:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-25 08:51:12,078 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-07-25 08:51:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:12,078 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-25 08:51:12,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:51:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-25 08:51:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:51:12,079 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:12,079 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-07-25 08:51:12,079 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:12,080 INFO L82 PathProgramCache]: Analyzing trace with hash 992490181, now seen corresponding path program 115 times [2018-07-25 08:51:12,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3422 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:12,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:12,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:51:12,497 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:51:12,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:51:12,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:51:12,499 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 120 states. [2018-07-25 08:51:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:13,214 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-07-25 08:51:13,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:51:13,214 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:51:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:13,214 INFO L225 Difference]: With dead ends: 362 [2018-07-25 08:51:13,214 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:51:13,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7317, Invalid=24545, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:51:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:51:13,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:51:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:51:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 08:51:13,286 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-07-25 08:51:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:13,286 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 08:51:13,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:51:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 08:51:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:51:13,287 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:13,287 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-07-25 08:51:13,288 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:13,288 INFO L82 PathProgramCache]: Analyzing trace with hash 668200959, now seen corresponding path program 116 times [2018-07-25 08:51:13,288 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3540 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:13,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:13,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:51:13,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:51:13,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:51:13,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:51:13,552 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 64 states. [2018-07-25 08:51:13,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:13,775 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-07-25 08:51:13,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:51:13,775 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 240 [2018-07-25 08:51:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:13,776 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:51:13,776 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:51:13,777 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:51:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:51:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2018-07-25 08:51:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:51:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 08:51:13,843 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 08:51:13,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:13,844 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 08:51:13,844 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:51:13,844 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 08:51:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:51:13,845 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:13,845 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-25 08:51:13,845 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:13,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2104039557, now seen corresponding path program 117 times [2018-07-25 08:51:13,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3540 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:14,222 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:14,223 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:51:14,223 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:51:14,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:51:14,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:51:14,224 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 122 states. [2018-07-25 08:51:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:15,139 INFO L93 Difference]: Finished difference Result 368 states and 370 transitions. [2018-07-25 08:51:15,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:51:15,139 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:51:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:15,140 INFO L225 Difference]: With dead ends: 368 [2018-07-25 08:51:15,140 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:51:15,142 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7561, Invalid=25381, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:51:15,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:51:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:51:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:51:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-25 08:51:15,216 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-25 08:51:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:15,216 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-25 08:51:15,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:51:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-25 08:51:15,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:51:15,217 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:15,217 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-07-25 08:51:15,217 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:15,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1941080139, now seen corresponding path program 118 times [2018-07-25 08:51:15,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3660 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:15,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:15,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:51:15,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:51:15,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:51:15,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:51:15,432 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 65 states. [2018-07-25 08:51:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:15,688 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2018-07-25 08:51:15,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:51:15,688 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 244 [2018-07-25 08:51:15,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:15,689 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:51:15,689 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:51:15,690 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:51:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:51:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2018-07-25 08:51:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:51:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 08:51:15,759 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-07-25 08:51:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:15,759 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 08:51:15,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:51:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 08:51:15,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:51:15,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:15,760 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-07-25 08:51:15,760 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:15,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1362273871, now seen corresponding path program 119 times [2018-07-25 08:51:15,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3660 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:16,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:16,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:51:16,164 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:51:16,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:51:16,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:51:16,166 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 124 states. [2018-07-25 08:51:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:17,005 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2018-07-25 08:51:17,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:51:17,005 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:51:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:17,006 INFO L225 Difference]: With dead ends: 374 [2018-07-25 08:51:17,006 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:51:17,007 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7809, Invalid=26231, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:51:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:51:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:51:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:51:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 08:51:17,076 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 08:51:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:17,076 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 08:51:17,076 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:51:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 08:51:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:51:17,077 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:17,077 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-07-25 08:51:17,078 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:17,078 INFO L82 PathProgramCache]: Analyzing trace with hash -571654933, now seen corresponding path program 120 times [2018-07-25 08:51:17,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3782 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:17,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:17,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:51:17,306 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:51:17,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:51:17,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:51:17,307 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 66 states. [2018-07-25 08:51:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:17,536 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2018-07-25 08:51:17,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:51:17,537 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 248 [2018-07-25 08:51:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:17,537 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:51:17,537 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:51:17,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:51:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:51:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251. [2018-07-25 08:51:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:51:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 08:51:17,617 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-25 08:51:17,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:17,618 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 08:51:17,618 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:51:17,618 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 08:51:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:51:17,619 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:17,619 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-25 08:51:17,619 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:17,619 INFO L82 PathProgramCache]: Analyzing trace with hash 395356519, now seen corresponding path program 121 times [2018-07-25 08:51:17,619 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3782 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:18,026 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:18,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:51:18,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:51:18,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:51:18,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:51:18,028 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 126 states. [2018-07-25 08:51:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:18,912 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2018-07-25 08:51:18,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:51:18,912 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:51:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:18,913 INFO L225 Difference]: With dead ends: 380 [2018-07-25 08:51:18,913 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:51:18,915 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5612 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8061, Invalid=27095, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:51:18,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:51:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:51:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:51:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 08:51:18,993 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-25 08:51:18,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:18,993 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 08:51:18,993 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:51:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 08:51:18,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:51:18,994 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:18,994 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-07-25 08:51:18,994 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:18,995 INFO L82 PathProgramCache]: Analyzing trace with hash 557342625, now seen corresponding path program 122 times [2018-07-25 08:51:18,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3906 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:19,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:19,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:51:19,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:51:19,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:51:19,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:51:19,239 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 67 states. [2018-07-25 08:51:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:19,491 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-07-25 08:51:19,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:51:19,491 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 252 [2018-07-25 08:51:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:19,492 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:51:19,492 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:51:19,493 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:51:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:51:19,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-07-25 08:51:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:51:19,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 08:51:19,567 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 08:51:19,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:19,567 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 08:51:19,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:51:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 08:51:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:51:19,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:19,568 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-07-25 08:51:19,568 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:19,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1264716131, now seen corresponding path program 123 times [2018-07-25 08:51:19,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 3906 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:20,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:20,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:51:20,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:51:20,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:51:20,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:51:20,010 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 128 states. [2018-07-25 08:51:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:20,886 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2018-07-25 08:51:20,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:51:20,886 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:51:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:20,886 INFO L225 Difference]: With dead ends: 386 [2018-07-25 08:51:20,886 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:51:20,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8317, Invalid=27973, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:51:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:51:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:51:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:51:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-25 08:51:20,960 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-07-25 08:51:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:20,960 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-25 08:51:20,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:51:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-25 08:51:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:51:20,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:20,961 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-07-25 08:51:20,962 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:20,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1700003881, now seen corresponding path program 124 times [2018-07-25 08:51:20,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 4032 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:21,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:21,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:51:21,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:51:21,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:51:21,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:51:21,232 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 68 states. [2018-07-25 08:51:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:21,503 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2018-07-25 08:51:21,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:51:21,503 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 256 [2018-07-25 08:51:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:21,504 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:51:21,504 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:51:21,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4096 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6502, Invalid=10790, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:51:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:51:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-07-25 08:51:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:51:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 08:51:21,594 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-25 08:51:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:21,594 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 08:51:21,594 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:51:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 08:51:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:51:21,595 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:21,595 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-25 08:51:21,595 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1616223917, now seen corresponding path program 125 times [2018-07-25 08:51:21,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 4032 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:22,027 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:22,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:51:22,028 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:51:22,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:51:22,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:51:22,029 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 130 states. [2018-07-25 08:51:22,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:22,955 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2018-07-25 08:51:22,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:51:22,955 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:51:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:22,956 INFO L225 Difference]: With dead ends: 392 [2018-07-25 08:51:22,956 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:51:22,959 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5985 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8577, Invalid=28865, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:51:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:51:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:51:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:51:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 08:51:23,035 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 08:51:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:23,036 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 08:51:23,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:51:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 08:51:23,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:51:23,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:23,037 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-07-25 08:51:23,037 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:23,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1354579341, now seen corresponding path program 126 times [2018-07-25 08:51:23,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4160 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:23,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:23,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:51:23,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:51:23,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:51:23,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:51:23,301 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 69 states. [2018-07-25 08:51:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:23,571 INFO L93 Difference]: Finished difference Result 269 states and 270 transitions. [2018-07-25 08:51:23,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:51:23,571 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 260 [2018-07-25 08:51:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:23,572 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:51:23,572 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:51:23,574 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:51:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:51:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2018-07-25 08:51:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:51:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-25 08:51:23,653 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-07-25 08:51:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:23,653 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-25 08:51:23,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:51:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-25 08:51:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:51:23,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:23,654 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-07-25 08:51:23,654 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:23,655 INFO L82 PathProgramCache]: Analyzing trace with hash 375589257, now seen corresponding path program 127 times [2018-07-25 08:51:23,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4160 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:24,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:24,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:51:24,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:51:24,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:51:24,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:51:24,169 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 132 states. [2018-07-25 08:51:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:25,056 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2018-07-25 08:51:25,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:51:25,056 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:51:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:25,057 INFO L225 Difference]: With dead ends: 398 [2018-07-25 08:51:25,057 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:51:25,060 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8841, Invalid=29771, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:51:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:51:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:51:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:51:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 08:51:25,138 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-07-25 08:51:25,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:25,138 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 08:51:25,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:51:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 08:51:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:51:25,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:25,140 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-07-25 08:51:25,140 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:25,141 INFO L82 PathProgramCache]: Analyzing trace with hash 232339651, now seen corresponding path program 128 times [2018-07-25 08:51:25,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4290 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:25,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:25,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:51:25,409 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:51:25,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:51:25,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:51:25,410 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 70 states. [2018-07-25 08:51:25,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:25,672 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-07-25 08:51:25,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:51:25,673 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 264 [2018-07-25 08:51:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:25,673 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:51:25,673 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:51:25,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:51:25,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:51:25,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2018-07-25 08:51:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:51:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 08:51:25,754 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 08:51:25,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:25,755 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 08:51:25,755 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:51:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 08:51:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:51:25,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:25,756 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-25 08:51:25,756 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:25,756 INFO L82 PathProgramCache]: Analyzing trace with hash -59961537, now seen corresponding path program 129 times [2018-07-25 08:51:25,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4290 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:26,217 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:26,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:51:26,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:51:26,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:51:26,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:51:26,219 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 134 states. [2018-07-25 08:51:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:27,186 INFO L93 Difference]: Finished difference Result 404 states and 406 transitions. [2018-07-25 08:51:27,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:51:27,186 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:51:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:27,187 INFO L225 Difference]: With dead ends: 404 [2018-07-25 08:51:27,187 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:51:27,190 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9109, Invalid=30691, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:51:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:51:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:51:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:51:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-25 08:51:27,270 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-25 08:51:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:27,270 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-25 08:51:27,270 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:51:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-25 08:51:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:51:27,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:27,271 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-07-25 08:51:27,271 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:27,271 INFO L82 PathProgramCache]: Analyzing trace with hash -496692871, now seen corresponding path program 130 times [2018-07-25 08:51:27,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4422 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:27,554 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:27,554 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:51:27,554 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:51:27,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:51:27,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:51:27,555 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 71 states. [2018-07-25 08:51:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:27,828 INFO L93 Difference]: Finished difference Result 277 states and 278 transitions. [2018-07-25 08:51:27,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:51:27,828 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 268 [2018-07-25 08:51:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:27,828 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:51:27,829 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:51:27,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4489 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:51:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:51:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2018-07-25 08:51:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:51:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 08:51:27,923 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-07-25 08:51:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:27,923 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 08:51:27,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:51:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 08:51:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:51:27,924 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:27,924 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-07-25 08:51:27,924 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:27,924 INFO L82 PathProgramCache]: Analyzing trace with hash -580545931, now seen corresponding path program 131 times [2018-07-25 08:51:27,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4422 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:28,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:28,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:51:28,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:51:28,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:51:28,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:51:28,491 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 136 states. [2018-07-25 08:51:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:29,140 INFO L93 Difference]: Finished difference Result 410 states and 412 transitions. [2018-07-25 08:51:29,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:51:29,141 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:51:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:29,141 INFO L225 Difference]: With dead ends: 410 [2018-07-25 08:51:29,141 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:51:29,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9381, Invalid=31625, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:51:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:51:29,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:51:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:51:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 08:51:29,227 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 08:51:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:29,227 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 08:51:29,227 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:51:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 08:51:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:51:29,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:29,228 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-07-25 08:51:29,228 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash 649979823, now seen corresponding path program 132 times [2018-07-25 08:51:29,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4556 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:29,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:29,580 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:51:29,581 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:51:29,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:51:29,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:51:29,582 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 72 states. [2018-07-25 08:51:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:29,858 INFO L93 Difference]: Finished difference Result 281 states and 282 transitions. [2018-07-25 08:51:29,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:51:29,858 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 272 [2018-07-25 08:51:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:29,859 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:51:29,859 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:51:29,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:51:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:51:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2018-07-25 08:51:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:51:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 08:51:29,955 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-25 08:51:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:29,956 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 08:51:29,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:51:29,956 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 08:51:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:51:29,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:29,957 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-25 08:51:29,957 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:29,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1860285227, now seen corresponding path program 133 times [2018-07-25 08:51:29,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4556 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:30,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:30,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:51:30,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:51:30,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:51:30,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4829, Invalid=14077, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:51:30,468 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 138 states. [2018-07-25 08:51:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:31,566 INFO L93 Difference]: Finished difference Result 416 states and 418 transitions. [2018-07-25 08:51:31,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:51:31,566 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:51:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:31,567 INFO L225 Difference]: With dead ends: 416 [2018-07-25 08:51:31,567 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:51:31,572 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6767 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9657, Invalid=32573, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:51:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:51:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:51:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:51:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 08:51:31,716 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-25 08:51:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:31,716 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 08:51:31,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:51:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 08:51:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:51:31,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:31,718 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-07-25 08:51:31,718 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:31,718 INFO L82 PathProgramCache]: Analyzing trace with hash -46605467, now seen corresponding path program 134 times [2018-07-25 08:51:31,718 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4692 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:32,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:32,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:51:32,149 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:51:32,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:51:32,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:51:32,149 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 73 states. [2018-07-25 08:51:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:32,458 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-07-25 08:51:32,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:51:32,458 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 276 [2018-07-25 08:51:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:32,459 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:51:32,459 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:51:32,460 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4761 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:51:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:51:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-07-25 08:51:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:51:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 08:51:32,549 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 08:51:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:32,549 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 08:51:32,549 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:51:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 08:51:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:51:32,550 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:32,550 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-07-25 08:51:32,550 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:32,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1838247583, now seen corresponding path program 135 times [2018-07-25 08:51:32,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4692 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:33,076 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:33,076 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:51:33,076 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:51:33,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:51:33,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:51:33,079 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 140 states. [2018-07-25 08:51:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:34,157 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2018-07-25 08:51:34,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:51:34,157 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:51:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:34,158 INFO L225 Difference]: With dead ends: 422 [2018-07-25 08:51:34,158 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:51:34,161 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6970 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9937, Invalid=33535, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:51:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:51:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:51:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:51:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-25 08:51:34,248 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2018-07-25 08:51:34,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:34,249 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-25 08:51:34,249 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:51:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-25 08:51:34,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:51:34,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:34,250 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 68, 1, 1, 1, 1] [2018-07-25 08:51:34,250 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1411583131, now seen corresponding path program 136 times [2018-07-25 08:51:34,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9522 backedges. 4830 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:34,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:34,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:51:34,546 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:51:34,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:51:34,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:51:34,547 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 74 states. [2018-07-25 08:51:34,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:34,880 INFO L93 Difference]: Finished difference Result 289 states and 290 transitions. [2018-07-25 08:51:34,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:51:34,880 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 280 [2018-07-25 08:51:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:34,881 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:51:34,881 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:51:34,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4900 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7741, Invalid=12851, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:51:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:51:34,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2018-07-25 08:51:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:51:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 08:51:34,976 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-25 08:51:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:34,976 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 08:51:34,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:51:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 08:51:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:51:34,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:34,977 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-25 08:51:34,977 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:34,977 INFO L82 PathProgramCache]: Analyzing trace with hash -678343401, now seen corresponding path program 137 times [2018-07-25 08:51:34,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4830 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:35,527 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:35,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:51:35,528 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:51:35,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:51:35,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5111, Invalid=14911, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:51:35,530 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 142 states. [2018-07-25 08:51:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:36,480 INFO L93 Difference]: Finished difference Result 428 states and 430 transitions. [2018-07-25 08:51:36,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:51:36,480 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:51:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:36,481 INFO L225 Difference]: With dead ends: 428 [2018-07-25 08:51:36,481 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:51:36,483 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10221, Invalid=34511, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:51:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:51:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:51:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:51:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 08:51:36,574 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 08:51:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:36,574 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 08:51:36,574 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:51:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 08:51:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:51:36,575 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:36,575 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 69, 1, 1, 1, 1] [2018-07-25 08:51:36,575 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:36,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1740741457, now seen corresponding path program 138 times [2018-07-25 08:51:36,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9800 backedges. 4970 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:36,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:36,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:51:36,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:51:36,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:51:36,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:51:36,922 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 75 states. [2018-07-25 08:51:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:37,220 INFO L93 Difference]: Finished difference Result 293 states and 294 transitions. [2018-07-25 08:51:37,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:51:37,220 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 284 [2018-07-25 08:51:37,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:37,221 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:51:37,221 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:51:37,224 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5041 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:51:37,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:51:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2018-07-25 08:51:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:51:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-25 08:51:37,319 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2018-07-25 08:51:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:37,319 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-25 08:51:37,319 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:51:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-25 08:51:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:51:37,320 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:37,320 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-07-25 08:51:37,320 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2110195277, now seen corresponding path program 139 times [2018-07-25 08:51:37,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 4970 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:37,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:37,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:51:37,869 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:51:37,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:51:37,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:51:37,871 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 144 states. [2018-07-25 08:51:38,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:38,979 INFO L93 Difference]: Finished difference Result 434 states and 436 transitions. [2018-07-25 08:51:38,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:51:38,979 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:51:38,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:38,980 INFO L225 Difference]: With dead ends: 434 [2018-07-25 08:51:38,980 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:51:38,985 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10509, Invalid=35501, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:51:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:51:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:51:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:51:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 08:51:39,152 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 286 [2018-07-25 08:51:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:39,152 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 08:51:39,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:51:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 08:51:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:51:39,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:39,154 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 70, 1, 1, 1, 1] [2018-07-25 08:51:39,154 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:39,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1001281657, now seen corresponding path program 140 times [2018-07-25 08:51:39,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 5112 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:39,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:39,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:51:39,508 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:51:39,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:51:39,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:51:39,509 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 76 states. [2018-07-25 08:51:39,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:39,868 INFO L93 Difference]: Finished difference Result 297 states and 298 transitions. [2018-07-25 08:51:39,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:51:39,868 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 288 [2018-07-25 08:51:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:39,869 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:51:39,869 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:51:39,870 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:51:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:51:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2018-07-25 08:51:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:51:39,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 08:51:39,964 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 08:51:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:39,965 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 08:51:39,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:51:39,965 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 08:51:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:51:39,965 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:39,966 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-25 08:51:39,966 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash -159064829, now seen corresponding path program 141 times [2018-07-25 08:51:39,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5112 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:40,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:40,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:51:40,515 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:51:40,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:51:40,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=15769, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:51:40,517 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 146 states. [2018-07-25 08:51:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:41,711 INFO L93 Difference]: Finished difference Result 440 states and 442 transitions. [2018-07-25 08:51:41,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:51:41,712 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:51:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:41,712 INFO L225 Difference]: With dead ends: 440 [2018-07-25 08:51:41,712 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:51:41,716 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7597 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10801, Invalid=36505, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:51:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:51:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:51:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:51:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-25 08:51:41,812 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-25 08:51:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:41,813 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-25 08:51:41,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:51:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-25 08:51:41,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:51:41,814 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:41,814 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 71, 1, 1, 1, 1] [2018-07-25 08:51:41,814 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:41,814 INFO L82 PathProgramCache]: Analyzing trace with hash -938979011, now seen corresponding path program 142 times [2018-07-25 08:51:41,814 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 5256 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:42,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:42,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:51:42,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:51:42,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:51:42,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:51:42,137 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 77 states. [2018-07-25 08:51:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:42,454 INFO L93 Difference]: Finished difference Result 301 states and 302 transitions. [2018-07-25 08:51:42,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:51:42,454 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 292 [2018-07-25 08:51:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:42,454 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:51:42,454 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:51:42,456 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:51:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:51:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2018-07-25 08:51:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:51:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 08:51:42,554 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 292 [2018-07-25 08:51:42,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:42,554 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 08:51:42,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:51:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 08:51:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:51:42,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:42,555 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-07-25 08:51:42,555 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:42,556 INFO L82 PathProgramCache]: Analyzing trace with hash -415764167, now seen corresponding path program 143 times [2018-07-25 08:51:42,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5256 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:43,150 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:43,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:51:43,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:51:43,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:51:43,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:51:43,152 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 148 states. [2018-07-25 08:51:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:44,586 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2018-07-25 08:51:44,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:51:44,586 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:51:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:44,587 INFO L225 Difference]: With dead ends: 446 [2018-07-25 08:51:44,587 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:51:44,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11097, Invalid=37523, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:51:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:51:44,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:51:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:51:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 08:51:44,690 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 08:51:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:44,690 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 08:51:44,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:51:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 08:51:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:51:44,691 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:44,691 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 72, 1, 1, 1, 1] [2018-07-25 08:51:44,691 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:44,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1525499789, now seen corresponding path program 144 times [2018-07-25 08:51:44,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10658 backedges. 5402 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:44,997 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:44,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:51:44,997 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:51:44,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:51:44,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:51:44,998 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 78 states. [2018-07-25 08:51:45,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,318 INFO L93 Difference]: Finished difference Result 305 states and 306 transitions. [2018-07-25 08:51:45,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:51:45,318 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 296 [2018-07-25 08:51:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,319 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:51:45,319 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:51:45,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5476 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:51:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:51:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-07-25 08:51:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:51:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 08:51:45,482 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-25 08:51:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,482 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 08:51:45,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:51:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 08:51:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:51:45,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,483 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-25 08:51:45,483 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1421516049, now seen corresponding path program 145 times [2018-07-25 08:51:45,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5402 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:46,066 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,066 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:51:46,066 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:51:46,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:51:46,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5699, Invalid=16651, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:51:46,069 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 150 states. [2018-07-25 08:51:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:47,390 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2018-07-25 08:51:47,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:51:47,390 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:51:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:47,390 INFO L225 Difference]: With dead ends: 452 [2018-07-25 08:51:47,390 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:51:47,394 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8030 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11397, Invalid=38555, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:51:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:51:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:51:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:51:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 08:51:47,495 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-25 08:51:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:47,495 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 08:51:47,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:51:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 08:51:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:51:47,496 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:47,496 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 73, 1, 1, 1, 1] [2018-07-25 08:51:47,496 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:47,497 INFO L82 PathProgramCache]: Analyzing trace with hash -476709591, now seen corresponding path program 146 times [2018-07-25 08:51:47,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10952 backedges. 5550 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:47,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:51:47,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:51:47,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:51:47,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:51:47,904 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 79 states. [2018-07-25 08:51:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,228 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-07-25 08:51:48,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:51:48,229 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 300 [2018-07-25 08:51:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,229 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:51:48,229 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:51:48,231 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5625 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:51:48,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:51:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2018-07-25 08:51:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:51:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 08:51:48,337 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 08:51:48,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,337 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 08:51:48,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:51:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 08:51:48,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:51:48,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,338 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-07-25 08:51:48,338 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1443516965, now seen corresponding path program 147 times [2018-07-25 08:51:48,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 5550 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:48,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:48,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:51:48,936 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:51:48,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:51:48,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:51:48,938 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 152 states. [2018-07-25 08:51:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,008 INFO L93 Difference]: Finished difference Result 458 states and 460 transitions. [2018-07-25 08:51:50,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:51:50,008 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:51:50,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,009 INFO L225 Difference]: With dead ends: 458 [2018-07-25 08:51:50,009 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:51:50,013 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11701, Invalid=39601, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:51:50,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:51:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:51:50,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:51:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-25 08:51:50,117 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2018-07-25 08:51:50,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,117 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-25 08:51:50,117 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:51:50,117 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-25 08:51:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:51:50,118 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,118 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 74, 1, 1, 1, 1] [2018-07-25 08:51:50,118 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1672429407, now seen corresponding path program 148 times [2018-07-25 08:51:50,118 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 5700 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:51:50,456 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:51:50,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:51:50,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:51:50,457 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 80 states. [2018-07-25 08:51:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:50,830 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2018-07-25 08:51:50,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:51:50,831 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 304 [2018-07-25 08:51:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:50,831 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:51:50,832 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:51:50,833 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5776 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9088, Invalid=15092, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:51:50,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:51:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2018-07-25 08:51:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:51:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 08:51:50,953 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-25 08:51:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:50,954 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 08:51:50,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:51:50,954 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 08:51:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:51:50,954 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:50,955 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-25 08:51:50,955 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:50,955 INFO L82 PathProgramCache]: Analyzing trace with hash 886824667, now seen corresponding path program 149 times [2018-07-25 08:51:50,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5700 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:51,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:51,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:51:51,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:51:51,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:51:51,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6005, Invalid=17557, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:51:51,702 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 154 states. [2018-07-25 08:51:52,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,639 INFO L93 Difference]: Finished difference Result 464 states and 466 transitions. [2018-07-25 08:51:52,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:51:52,639 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:51:52,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,640 INFO L225 Difference]: With dead ends: 464 [2018-07-25 08:51:52,640 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:51:52,646 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8475 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12009, Invalid=40661, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:51:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:51:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:51:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:51:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 08:51:52,825 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 08:51:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,825 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 08:51:52,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:51:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 08:51:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:51:52,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,827 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 75, 1, 1, 1, 1] [2018-07-25 08:51:52,827 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,827 INFO L82 PathProgramCache]: Analyzing trace with hash -546070763, now seen corresponding path program 150 times [2018-07-25 08:51:52,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11552 backedges. 5852 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:53,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:53,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:51:53,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:51:53,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:51:53,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:51:53,293 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 81 states. [2018-07-25 08:51:53,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,650 INFO L93 Difference]: Finished difference Result 317 states and 318 transitions. [2018-07-25 08:51:53,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:51:53,650 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 308 [2018-07-25 08:51:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,651 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:51:53,651 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:51:53,653 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5929 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:51:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:51:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2018-07-25 08:51:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:51:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-25 08:51:53,761 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2018-07-25 08:51:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,761 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-25 08:51:53,761 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:51:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-25 08:51:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:51:53,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,762 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-07-25 08:51:53,762 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,762 INFO L82 PathProgramCache]: Analyzing trace with hash -788059887, now seen corresponding path program 151 times [2018-07-25 08:51:53,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5852 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:54,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:54,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:51:54,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:51:54,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:51:54,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:51:54,454 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 156 states. [2018-07-25 08:51:55,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:55,472 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2018-07-25 08:51:55,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:51:55,472 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:51:55,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:55,472 INFO L225 Difference]: With dead ends: 470 [2018-07-25 08:51:55,473 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:51:55,475 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12321, Invalid=41735, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:51:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:51:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:51:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:51:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 08:51:55,582 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 310 [2018-07-25 08:51:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:55,582 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 08:51:55,583 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:51:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 08:51:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:51:55,583 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:55,583 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 76, 1, 1, 1, 1] [2018-07-25 08:51:55,584 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash -319800245, now seen corresponding path program 152 times [2018-07-25 08:51:55,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11858 backedges. 6006 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:55,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:55,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:51:55,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:51:55,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:51:55,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:51:55,926 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 82 states. [2018-07-25 08:51:56,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:56,289 INFO L93 Difference]: Finished difference Result 321 states and 322 transitions. [2018-07-25 08:51:56,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:51:56,290 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 312 [2018-07-25 08:51:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:56,290 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:51:56,290 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:51:56,292 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6084 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:51:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:51:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-07-25 08:51:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:51:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 08:51:56,403 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 08:51:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:56,403 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 08:51:56,403 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:51:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 08:51:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:51:56,404 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:56,404 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-25 08:51:56,404 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:56,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1909543111, now seen corresponding path program 153 times [2018-07-25 08:51:56,405 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 6006 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:57,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:57,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:51:57,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:51:57,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:51:57,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6319, Invalid=18487, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:51:57,091 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 158 states. [2018-07-25 08:51:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:58,620 INFO L93 Difference]: Finished difference Result 476 states and 478 transitions. [2018-07-25 08:51:58,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:51:58,620 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:51:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:58,621 INFO L225 Difference]: With dead ends: 476 [2018-07-25 08:51:58,621 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:51:58,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12637, Invalid=42823, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:51:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:51:58,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:51:58,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:51:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-25 08:51:58,830 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-25 08:51:58,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:58,830 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-25 08:51:58,830 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:51:58,830 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-25 08:51:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:51:58,832 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:58,832 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 78, 77, 1, 1, 1, 1] [2018-07-25 08:51:58,832 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:58,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2144717055, now seen corresponding path program 154 times [2018-07-25 08:51:58,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12168 backedges. 6162 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:59,427 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:59,427 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:51:59,427 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:51:59,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:51:59,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:51:59,428 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 83 states. [2018-07-25 08:51:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:59,794 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-07-25 08:51:59,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:51:59,794 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 316 [2018-07-25 08:51:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:59,795 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:51:59,795 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:51:59,797 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:51:59,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:51:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-07-25 08:51:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:51:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 08:51:59,911 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 316 [2018-07-25 08:51:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:59,911 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 08:51:59,911 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:51:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 08:51:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:51:59,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:59,912 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-07-25 08:51:59,912 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:59,912 INFO L82 PathProgramCache]: Analyzing trace with hash 511145469, now seen corresponding path program 155 times [2018-07-25 08:51:59,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6162 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:00,599 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:00,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:52:00,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:52:00,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:52:00,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:52:00,602 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 160 states. [2018-07-25 08:52:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:02,195 INFO L93 Difference]: Finished difference Result 482 states and 484 transitions. [2018-07-25 08:52:02,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:52:02,195 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 08:52:02,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:02,196 INFO L225 Difference]: With dead ends: 482 [2018-07-25 08:52:02,196 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:52:02,200 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=12957, Invalid=43925, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:52:02,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:52:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:52:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:52:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 08:52:02,315 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-25 08:52:02,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:02,315 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 08:52:02,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:52:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 08:52:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:52:02,316 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:02,316 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 79, 78, 1, 1, 1, 1] [2018-07-25 08:52:02,316 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:02,316 INFO L82 PathProgramCache]: Analyzing trace with hash -316756169, now seen corresponding path program 156 times [2018-07-25 08:52:02,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 6320 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:02,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:02,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:52:02,682 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:52:02,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:52:02,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:52:02,683 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 84 states. [2018-07-25 08:52:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:03,077 INFO L93 Difference]: Finished difference Result 329 states and 330 transitions. [2018-07-25 08:52:03,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:52:03,078 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 320 [2018-07-25 08:52:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:03,079 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:52:03,079 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:52:03,081 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6400 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:52:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:52:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2018-07-25 08:52:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:52:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-25 08:52:03,245 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-25 08:52:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:03,245 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-25 08:52:03,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:52:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-25 08:52:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:52:03,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:03,246 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-07-25 08:52:03,246 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:03,247 INFO L82 PathProgramCache]: Analyzing trace with hash 539932851, now seen corresponding path program 157 times [2018-07-25 08:52:03,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6320 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:03,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:03,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:52:03,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:52:03,929 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:52:03,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6641, Invalid=19441, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:52:03,930 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 162 states. [2018-07-25 08:52:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:05,629 INFO L93 Difference]: Finished difference Result 488 states and 490 transitions. [2018-07-25 08:52:05,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:52:05,629 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 08:52:05,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:05,630 INFO L225 Difference]: With dead ends: 488 [2018-07-25 08:52:05,630 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:52:05,634 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13281, Invalid=45041, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:52:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:52:05,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:52:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:52:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 08:52:05,753 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-25 08:52:05,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:05,753 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 08:52:05,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:52:05,753 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 08:52:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:52:05,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:05,754 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 80, 79, 1, 1, 1, 1] [2018-07-25 08:52:05,754 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:05,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1774372077, now seen corresponding path program 158 times [2018-07-25 08:52:05,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12800 backedges. 6480 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:06,123 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:06,123 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:52:06,124 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:52:06,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:52:06,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:52:06,124 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 85 states. [2018-07-25 08:52:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:06,514 INFO L93 Difference]: Finished difference Result 333 states and 334 transitions. [2018-07-25 08:52:06,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:52:06,514 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 324 [2018-07-25 08:52:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:06,515 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:52:06,515 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:52:06,517 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:52:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:52:06,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2018-07-25 08:52:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:52:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 08:52:06,637 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-25 08:52:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:06,638 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 08:52:06,638 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:52:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 08:52:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:52:06,639 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:06,639 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-07-25 08:52:06,639 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:06,639 INFO L82 PathProgramCache]: Analyzing trace with hash 69482729, now seen corresponding path program 159 times [2018-07-25 08:52:06,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6480 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:07,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:07,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:52:07,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:52:07,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:52:07,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:52:07,416 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 164 states. [2018-07-25 08:52:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:08,340 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2018-07-25 08:52:08,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:52:08,340 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 08:52:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:08,341 INFO L225 Difference]: With dead ends: 494 [2018-07-25 08:52:08,341 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:52:08,345 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13609, Invalid=46171, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:52:08,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:52:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:52:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:52:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-25 08:52:08,465 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 326 [2018-07-25 08:52:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:08,465 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-25 08:52:08,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:52:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-25 08:52:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:52:08,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:08,467 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 81, 80, 1, 1, 1, 1] [2018-07-25 08:52:08,467 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:08,467 INFO L82 PathProgramCache]: Analyzing trace with hash 268671011, now seen corresponding path program 160 times [2018-07-25 08:52:08,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13122 backedges. 6642 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:08,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:08,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:52:08,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:52:08,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:52:08,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:52:08,854 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 86 states. [2018-07-25 08:52:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:09,252 INFO L93 Difference]: Finished difference Result 337 states and 338 transitions. [2018-07-25 08:52:09,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:52:09,252 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 328 [2018-07-25 08:52:09,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:09,253 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:52:09,253 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:52:09,255 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6724 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10543, Invalid=17513, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:52:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:52:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2018-07-25 08:52:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:52:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 08:52:09,378 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-25 08:52:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:09,378 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 08:52:09,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:52:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 08:52:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:52:09,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:09,379 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-07-25 08:52:09,379 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:09,379 INFO L82 PathProgramCache]: Analyzing trace with hash 494737055, now seen corresponding path program 161 times [2018-07-25 08:52:09,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 6642 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:10,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:10,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:52:10,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:52:10,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:52:10,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6971, Invalid=20419, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:52:10,211 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 166 states. [2018-07-25 08:52:11,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:11,889 INFO L93 Difference]: Finished difference Result 500 states and 502 transitions. [2018-07-25 08:52:11,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:52:11,889 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 08:52:11,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:11,889 INFO L225 Difference]: With dead ends: 500 [2018-07-25 08:52:11,889 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:52:11,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9882 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13941, Invalid=47315, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:52:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:52:12,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:52:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:52:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 08:52:12,102 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 08:52:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:12,102 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 08:52:12,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:52:12,102 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 08:52:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:52:12,104 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:12,104 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 82, 81, 1, 1, 1, 1] [2018-07-25 08:52:12,104 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:12,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1606830297, now seen corresponding path program 162 times [2018-07-25 08:52:12,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13448 backedges. 6806 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:12,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:12,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:52:12,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:52:12,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:52:12,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:52:12,536 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 87 states. [2018-07-25 08:52:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:12,958 INFO L93 Difference]: Finished difference Result 341 states and 342 transitions. [2018-07-25 08:52:12,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:52:12,959 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 332 [2018-07-25 08:52:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:12,959 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:52:12,959 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:52:12,962 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6889 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:52:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:52:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2018-07-25 08:52:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:52:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-07-25 08:52:13,087 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 332 [2018-07-25 08:52:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:13,088 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-07-25 08:52:13,088 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:52:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-07-25 08:52:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:52:13,089 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:13,089 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-07-25 08:52:13,089 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:13,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2024377899, now seen corresponding path program 163 times [2018-07-25 08:52:13,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6806 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:13,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:13,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:52:13,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:52:13,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:52:13,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:52:13,842 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 168 states. [2018-07-25 08:52:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:15,614 INFO L93 Difference]: Finished difference Result 506 states and 508 transitions. [2018-07-25 08:52:15,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:52:15,615 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 08:52:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:15,615 INFO L225 Difference]: With dead ends: 506 [2018-07-25 08:52:15,615 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:52:15,619 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14277, Invalid=48473, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 08:52:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:52:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:52:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:52:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 08:52:15,760 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 334 [2018-07-25 08:52:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:15,760 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 08:52:15,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:52:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 08:52:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:52:15,761 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:15,761 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 83, 82, 1, 1, 1, 1] [2018-07-25 08:52:15,762 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:15,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1088943887, now seen corresponding path program 164 times [2018-07-25 08:52:15,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13778 backedges. 6972 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:16,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:16,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:52:16,192 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:52:16,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:52:16,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:52:16,193 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 88 states. [2018-07-25 08:52:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:16,658 INFO L93 Difference]: Finished difference Result 345 states and 346 transitions. [2018-07-25 08:52:16,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:52:16,658 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 336 [2018-07-25 08:52:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:16,659 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:52:16,659 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:52:16,661 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7056 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:52:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:52:16,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-07-25 08:52:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:52:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 08:52:16,807 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 08:52:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:16,807 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 08:52:16,807 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:52:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 08:52:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:52:16,808 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:16,808 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-07-25 08:52:16,808 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:16,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1497011573, now seen corresponding path program 165 times [2018-07-25 08:52:16,809 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6972 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:17,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:17,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:52:17,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:52:17,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:52:17,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7309, Invalid=21421, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:52:17,697 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 170 states. [2018-07-25 08:52:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:19,524 INFO L93 Difference]: Finished difference Result 512 states and 514 transitions. [2018-07-25 08:52:19,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:52:19,524 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 08:52:19,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:19,525 INFO L225 Difference]: With dead ends: 512 [2018-07-25 08:52:19,525 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:52:19,527 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10375 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=14617, Invalid=49645, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 08:52:19,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:52:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:52:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:52:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-25 08:52:19,672 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-25 08:52:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:19,672 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-25 08:52:19,672 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:52:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-25 08:52:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:52:19,673 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:19,674 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 84, 83, 1, 1, 1, 1] [2018-07-25 08:52:19,674 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:19,674 INFO L82 PathProgramCache]: Analyzing trace with hash -2059550011, now seen corresponding path program 166 times [2018-07-25 08:52:19,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 14112 backedges. 7140 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:20,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:20,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:52:20,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:52:20,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:52:20,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:52:20,113 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 89 states. [2018-07-25 08:52:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:20,543 INFO L93 Difference]: Finished difference Result 349 states and 350 transitions. [2018-07-25 08:52:20,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:52:20,544 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 340 [2018-07-25 08:52:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:20,544 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:52:20,544 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:52:20,547 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:52:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:52:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2018-07-25 08:52:20,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:52:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 08:52:20,678 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 340 [2018-07-25 08:52:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:20,679 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 08:52:20,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:52:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 08:52:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:52:20,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:20,680 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-07-25 08:52:20,680 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:20,680 INFO L82 PathProgramCache]: Analyzing trace with hash 752296129, now seen corresponding path program 167 times [2018-07-25 08:52:20,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7140 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:21,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:21,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:52:21,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:52:21,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:52:21,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:52:21,546 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 172 states. [2018-07-25 08:52:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:23,377 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2018-07-25 08:52:23,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:52:23,377 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 08:52:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:23,378 INFO L225 Difference]: With dead ends: 518 [2018-07-25 08:52:23,378 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:52:23,382 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14961, Invalid=50831, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 08:52:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:52:23,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:52:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:52:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 08:52:23,567 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-25 08:52:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:23,567 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 08:52:23,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:52:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 08:52:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:52:23,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:23,568 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 85, 84, 1, 1, 1, 1] [2018-07-25 08:52:23,568 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:23,569 INFO L82 PathProgramCache]: Analyzing trace with hash -359347205, now seen corresponding path program 168 times [2018-07-25 08:52:23,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14450 backedges. 7310 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:24,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:24,012 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:52:24,013 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:52:24,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:52:24,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:52:24,014 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 90 states. [2018-07-25 08:52:24,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:24,488 INFO L93 Difference]: Finished difference Result 353 states and 354 transitions. [2018-07-25 08:52:24,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:52:24,488 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 344 [2018-07-25 08:52:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:24,489 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:52:24,489 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:52:24,491 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:52:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:52:24,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 347. [2018-07-25 08:52:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:52:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-25 08:52:24,628 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-25 08:52:24,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:24,628 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-25 08:52:24,628 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:52:24,628 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-25 08:52:24,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:52:24,629 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:24,629 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-07-25 08:52:24,629 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:24,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1735347081, now seen corresponding path program 169 times [2018-07-25 08:52:24,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7310 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:25,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:25,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:52:25,446 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:52:25,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:52:25,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7655, Invalid=22447, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:52:25,450 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 174 states. [2018-07-25 08:52:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:27,077 INFO L93 Difference]: Finished difference Result 524 states and 526 transitions. [2018-07-25 08:52:27,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:52:27,077 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 08:52:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:27,078 INFO L225 Difference]: With dead ends: 524 [2018-07-25 08:52:27,078 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:52:27,083 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10880 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15309, Invalid=52031, Unknown=0, NotChecked=0, Total=67340 [2018-07-25 08:52:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:52:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:52:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:52:27,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 08:52:27,226 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-25 08:52:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:27,227 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 08:52:27,227 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:52:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 08:52:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:52:27,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:27,228 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 86, 85, 1, 1, 1, 1] [2018-07-25 08:52:27,228 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:27,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1666043215, now seen corresponding path program 170 times [2018-07-25 08:52:27,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14792 backedges. 7482 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:27,733 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:27,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:52:27,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:52:27,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:52:27,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:52:27,735 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 91 states. [2018-07-25 08:52:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:28,176 INFO L93 Difference]: Finished difference Result 357 states and 358 transitions. [2018-07-25 08:52:28,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:52:28,176 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 348 [2018-07-25 08:52:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:28,177 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:52:28,177 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:52:28,179 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7569 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:52:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:52:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2018-07-25 08:52:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:52:28,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 08:52:28,324 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-25 08:52:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:28,324 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 08:52:28,324 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:52:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 08:52:28,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:52:28,325 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:28,325 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-07-25 08:52:28,325 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:28,325 INFO L82 PathProgramCache]: Analyzing trace with hash 955205037, now seen corresponding path program 171 times [2018-07-25 08:52:28,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 7482 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:29,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:29,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:52:29,152 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:52:29,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:52:29,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:52:29,155 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 176 states. [2018-07-25 08:52:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:31,320 INFO L93 Difference]: Finished difference Result 530 states and 532 transitions. [2018-07-25 08:52:31,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:52:31,320 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 08:52:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:31,321 INFO L225 Difference]: With dead ends: 530 [2018-07-25 08:52:31,321 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 08:52:31,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11137 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15661, Invalid=53245, Unknown=0, NotChecked=0, Total=68906 [2018-07-25 08:52:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 08:52:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 08:52:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:52:31,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-25 08:52:31,467 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 350 [2018-07-25 08:52:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:31,468 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-25 08:52:31,468 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:52:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-25 08:52:31,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:52:31,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:31,469 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 87, 86, 1, 1, 1, 1] [2018-07-25 08:52:31,469 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:31,469 INFO L82 PathProgramCache]: Analyzing trace with hash 928192231, now seen corresponding path program 172 times [2018-07-25 08:52:31,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15138 backedges. 7656 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:31,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:31,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:52:31,971 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:52:31,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:52:31,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:52:31,972 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 92 states. [2018-07-25 08:52:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:32,443 INFO L93 Difference]: Finished difference Result 361 states and 362 transitions. [2018-07-25 08:52:32,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:52:32,443 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 352 [2018-07-25 08:52:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:32,444 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:52:32,444 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:52:32,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7744 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12106, Invalid=20114, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:52:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:52:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 355. [2018-07-25 08:52:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:52:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 08:52:32,607 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-25 08:52:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:32,607 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 08:52:32,607 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:52:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 08:52:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:52:32,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:32,608 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-07-25 08:52:32,608 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1360530333, now seen corresponding path program 173 times [2018-07-25 08:52:32,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 7656 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:33,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:33,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:52:33,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:52:33,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:52:33,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8009, Invalid=23497, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:52:33,637 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 178 states. [2018-07-25 08:52:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:35,873 INFO L93 Difference]: Finished difference Result 536 states and 538 transitions. [2018-07-25 08:52:35,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:52:35,873 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 08:52:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:35,874 INFO L225 Difference]: With dead ends: 536 [2018-07-25 08:52:35,874 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 08:52:35,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11397 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=16017, Invalid=54473, Unknown=0, NotChecked=0, Total=70490 [2018-07-25 08:52:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 08:52:36,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 08:52:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:52:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 08:52:36,077 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 08:52:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:36,077 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 08:52:36,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:52:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 08:52:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:52:36,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:36,078 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 88, 87, 1, 1, 1, 1] [2018-07-25 08:52:36,078 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:36,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1210882205, now seen corresponding path program 174 times [2018-07-25 08:52:36,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15488 backedges. 7832 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:36,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:36,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:52:36,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:52:36,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:52:36,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:52:36,549 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 93 states. [2018-07-25 08:52:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:37,047 INFO L93 Difference]: Finished difference Result 365 states and 366 transitions. [2018-07-25 08:52:37,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:52:37,047 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 356 [2018-07-25 08:52:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:37,047 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:52:37,048 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:52:37,050 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7921 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:52:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:52:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-07-25 08:52:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:52:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-07-25 08:52:37,195 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 356 [2018-07-25 08:52:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:37,195 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-07-25 08:52:37,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:52:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-07-25 08:52:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:52:37,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:37,197 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-07-25 08:52:37,197 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:37,197 INFO L82 PathProgramCache]: Analyzing trace with hash -278404967, now seen corresponding path program 175 times [2018-07-25 08:52:37,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7832 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:38,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:38,071 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:52:38,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:52:38,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:52:38,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:52:38,074 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 180 states. [2018-07-25 08:52:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:40,329 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2018-07-25 08:52:40,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:52:40,330 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 08:52:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:40,330 INFO L225 Difference]: With dead ends: 542 [2018-07-25 08:52:40,330 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:52:40,332 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=16377, Invalid=55715, Unknown=0, NotChecked=0, Total=72092 [2018-07-25 08:52:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:52:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:52:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:52:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 08:52:40,478 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 358 [2018-07-25 08:52:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:40,478 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 08:52:40,478 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:52:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 08:52:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:52:40,479 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:40,479 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 89, 88, 1, 1, 1, 1] [2018-07-25 08:52:40,480 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:40,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1357633491, now seen corresponding path program 176 times [2018-07-25 08:52:40,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15842 backedges. 8010 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:40,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:40,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:52:40,953 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:52:40,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:52:40,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:52:40,954 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 94 states. [2018-07-25 08:52:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:41,430 INFO L93 Difference]: Finished difference Result 369 states and 370 transitions. [2018-07-25 08:52:41,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:52:41,430 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 360 [2018-07-25 08:52:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:41,431 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:52:41,431 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:52:41,433 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:52:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:52:41,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2018-07-25 08:52:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:52:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 08:52:41,584 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 08:52:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:41,584 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 08:52:41,584 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:52:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 08:52:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:52:41,585 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:41,585 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-07-25 08:52:41,585 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:41,586 INFO L82 PathProgramCache]: Analyzing trace with hash -984339889, now seen corresponding path program 177 times [2018-07-25 08:52:41,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8010 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:42,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:42,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:52:42,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:52:42,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:52:42,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8371, Invalid=24571, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:52:42,505 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 182 states. [2018-07-25 08:52:44,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:44,390 INFO L93 Difference]: Finished difference Result 548 states and 550 transitions. [2018-07-25 08:52:44,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:52:44,391 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 08:52:44,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:44,391 INFO L225 Difference]: With dead ends: 548 [2018-07-25 08:52:44,391 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:52:44,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11926 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=16741, Invalid=56971, Unknown=0, NotChecked=0, Total=73712 [2018-07-25 08:52:44,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:52:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 08:52:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:52:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-25 08:52:44,542 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-25 08:52:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:44,542 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-25 08:52:44,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:52:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-25 08:52:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:52:44,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:44,544 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 90, 89, 1, 1, 1, 1] [2018-07-25 08:52:44,544 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:44,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1228272777, now seen corresponding path program 178 times [2018-07-25 08:52:44,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16200 backedges. 8190 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:45,072 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:45,072 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:52:45,073 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:52:45,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:52:45,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:52:45,074 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 95 states. [2018-07-25 08:52:45,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:45,561 INFO L93 Difference]: Finished difference Result 373 states and 374 transitions. [2018-07-25 08:52:45,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:52:45,561 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 364 [2018-07-25 08:52:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:45,562 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:52:45,562 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:52:45,564 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:52:45,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:52:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2018-07-25 08:52:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:52:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-25 08:52:45,715 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 364 [2018-07-25 08:52:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:45,716 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-25 08:52:45,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:52:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-25 08:52:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:52:45,717 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:45,717 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 90, 90, 1, 1, 1, 1] [2018-07-25 08:52:45,717 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:45,717 INFO L82 PathProgramCache]: Analyzing trace with hash -745934459, now seen corresponding path program 179 times [2018-07-25 08:52:45,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 8190 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:46,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:46,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:52:46,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:52:46,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:52:46,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:52:46,678 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 184 states. [2018-07-25 08:52:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:48,733 INFO L93 Difference]: Finished difference Result 554 states and 556 transitions. [2018-07-25 08:52:48,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:52:48,734 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 08:52:48,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:48,734 INFO L225 Difference]: With dead ends: 554 [2018-07-25 08:52:48,734 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 08:52:48,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12195 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17109, Invalid=58241, Unknown=0, NotChecked=0, Total=75350 [2018-07-25 08:52:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 08:52:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 08:52:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:52:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-25 08:52:48,888 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 366 [2018-07-25 08:52:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:48,888 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-25 08:52:48,888 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:52:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-25 08:52:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:52:48,889 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:48,889 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 91, 90, 1, 1, 1, 1] [2018-07-25 08:52:48,889 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:48,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1599598913, now seen corresponding path program 180 times [2018-07-25 08:52:48,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16562 backedges. 8372 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:49,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:49,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:52:49,369 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:52:49,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:52:49,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:52:49,370 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 96 states. [2018-07-25 08:52:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:49,868 INFO L93 Difference]: Finished difference Result 377 states and 378 transitions. [2018-07-25 08:52:49,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:52:49,868 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 368 [2018-07-25 08:52:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:49,869 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:52:49,869 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:52:49,872 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:52:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:52:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 371. [2018-07-25 08:52:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:52:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-25 08:52:50,029 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-25 08:52:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:50,029 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-25 08:52:50,030 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:52:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-25 08:52:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:52:50,031 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:50,031 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-07-25 08:52:50,031 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:50,031 INFO L82 PathProgramCache]: Analyzing trace with hash 383669819, now seen corresponding path program 181 times [2018-07-25 08:52:50,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8372 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:51,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:51,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:52:51,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:52:51,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:52:51,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8741, Invalid=25669, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:52:51,004 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 186 states. [2018-07-25 08:52:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:52,689 INFO L93 Difference]: Finished difference Result 560 states and 562 transitions. [2018-07-25 08:52:52,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:52:52,689 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 08:52:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:52,690 INFO L225 Difference]: With dead ends: 560 [2018-07-25 08:52:52,690 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 08:52:52,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12467 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17481, Invalid=59525, Unknown=0, NotChecked=0, Total=77006 [2018-07-25 08:52:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 08:52:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 08:52:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:52:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-25 08:52:52,852 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-25 08:52:52,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:52,852 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-25 08:52:52,853 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:52:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-25 08:52:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:52:52,854 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:52,854 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 92, 91, 1, 1, 1, 1] [2018-07-25 08:52:52,854 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:52,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1059633547, now seen corresponding path program 182 times [2018-07-25 08:52:52,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16928 backedges. 8556 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:53,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:53,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:52:53,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:52:53,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:52:53,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:52:53,388 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 97 states. [2018-07-25 08:52:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:53,920 INFO L93 Difference]: Finished difference Result 381 states and 382 transitions. [2018-07-25 08:52:53,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:52:53,921 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 372 [2018-07-25 08:52:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:53,921 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:52:53,921 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:52:53,923 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8649 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:52:53,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:52:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2018-07-25 08:52:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:52:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-07-25 08:52:54,082 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 372 [2018-07-25 08:52:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:54,082 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-07-25 08:52:54,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:52:54,083 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-07-25 08:52:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:52:54,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:54,084 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 92, 92, 1, 1, 1, 1] [2018-07-25 08:52:54,084 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:54,084 INFO L82 PathProgramCache]: Analyzing trace with hash -400656271, now seen corresponding path program 183 times [2018-07-25 08:52:54,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 8556 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:55,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:55,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:52:55,127 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:52:55,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:52:55,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:52:55,129 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 188 states. [2018-07-25 08:52:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:57,510 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2018-07-25 08:52:57,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:52:57,510 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 08:52:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:57,511 INFO L225 Difference]: With dead ends: 566 [2018-07-25 08:52:57,511 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 08:52:57,515 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17857, Invalid=60823, Unknown=0, NotChecked=0, Total=78680 [2018-07-25 08:52:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 08:52:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 08:52:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:52:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-25 08:52:57,673 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 374 [2018-07-25 08:52:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:57,673 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-25 08:52:57,673 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:52:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-25 08:52:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:52:57,675 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:57,675 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 93, 92, 1, 1, 1, 1] [2018-07-25 08:52:57,676 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:57,676 INFO L82 PathProgramCache]: Analyzing trace with hash 256949163, now seen corresponding path program 184 times [2018-07-25 08:52:57,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 17298 backedges. 8742 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:58,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:58,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:52:58,208 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:52:58,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:52:58,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:52:58,209 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 98 states. [2018-07-25 08:52:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:58,732 INFO L93 Difference]: Finished difference Result 385 states and 386 transitions. [2018-07-25 08:52:58,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:52:58,732 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 376 [2018-07-25 08:52:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:58,733 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:52:58,733 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:52:58,735 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8836 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:52:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:52:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2018-07-25 08:52:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:52:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-25 08:52:58,898 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-25 08:52:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:58,898 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-25 08:52:58,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:52:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-25 08:52:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:52:58,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:58,899 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-07-25 08:52:58,899 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:58,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2114943015, now seen corresponding path program 185 times [2018-07-25 08:52:58,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8742 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:59,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:59,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:52:59,935 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:52:59,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:52:59,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:52:59,937 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 190 states. [2018-07-25 08:53:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:02,378 INFO L93 Difference]: Finished difference Result 572 states and 574 transitions. [2018-07-25 08:53:02,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:53:02,378 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 08:53:02,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:02,379 INFO L225 Difference]: With dead ends: 572 [2018-07-25 08:53:02,379 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 08:53:02,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13020 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18237, Invalid=62135, Unknown=0, NotChecked=0, Total=80372 [2018-07-25 08:53:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 08:53:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 08:53:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:53:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-25 08:53:02,544 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-25 08:53:02,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:02,544 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-25 08:53:02,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:53:02,544 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-25 08:53:02,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:53:02,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:02,545 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 94, 93, 1, 1, 1, 1] [2018-07-25 08:53:02,545 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:02,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1872334433, now seen corresponding path program 186 times [2018-07-25 08:53:02,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 8930 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:03,077 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:03,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:53:03,077 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:53:03,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:53:03,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:53:03,078 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 99 states. [2018-07-25 08:53:03,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:03,666 INFO L93 Difference]: Finished difference Result 389 states and 390 transitions. [2018-07-25 08:53:03,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:53:03,666 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 380 [2018-07-25 08:53:03,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:03,667 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:53:03,667 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:53:03,670 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9025 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:53:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:53:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2018-07-25 08:53:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:53:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-07-25 08:53:03,835 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 380 [2018-07-25 08:53:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:03,835 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-07-25 08:53:03,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:53:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-07-25 08:53:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:53:03,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:03,836 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2018-07-25 08:53:03,836 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:03,837 INFO L82 PathProgramCache]: Analyzing trace with hash -277973667, now seen corresponding path program 187 times [2018-07-25 08:53:03,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8930 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:04,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:04,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:53:04,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:53:04,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:53:04,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:53:04,882 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 192 states. [2018-07-25 08:53:06,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:06,854 INFO L93 Difference]: Finished difference Result 578 states and 580 transitions. [2018-07-25 08:53:06,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:53:06,854 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 08:53:06,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:06,855 INFO L225 Difference]: With dead ends: 578 [2018-07-25 08:53:06,855 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 08:53:06,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18621, Invalid=63461, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 08:53:06,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 08:53:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 08:53:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:53:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-25 08:53:07,026 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 382 [2018-07-25 08:53:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:07,026 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-25 08:53:07,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:53:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-25 08:53:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:53:07,028 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:07,028 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 95, 94, 1, 1, 1, 1] [2018-07-25 08:53:07,028 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:07,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1160699543, now seen corresponding path program 188 times [2018-07-25 08:53:07,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18050 backedges. 9120 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:07,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:07,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:53:07,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:53:07,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:53:07,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:53:07,665 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 100 states. [2018-07-25 08:53:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:08,201 INFO L93 Difference]: Finished difference Result 393 states and 394 transitions. [2018-07-25 08:53:08,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:53:08,201 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 384 [2018-07-25 08:53:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:08,202 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:53:08,202 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:53:08,205 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:53:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:53:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2018-07-25 08:53:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:53:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-25 08:53:08,372 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-25 08:53:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:08,373 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-25 08:53:08,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:53:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-25 08:53:08,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:53:08,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:08,375 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-07-25 08:53:08,375 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:08,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1259302893, now seen corresponding path program 189 times [2018-07-25 08:53:08,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9120 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:09,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:09,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:53:09,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:53:09,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:53:09,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9505, Invalid=27937, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:53:09,392 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 194 states. [2018-07-25 08:53:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:11,008 INFO L93 Difference]: Finished difference Result 584 states and 586 transitions. [2018-07-25 08:53:11,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:53:11,009 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 08:53:11,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:11,009 INFO L225 Difference]: With dead ends: 584 [2018-07-25 08:53:11,009 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 08:53:11,015 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13585 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19009, Invalid=64801, Unknown=0, NotChecked=0, Total=83810 [2018-07-25 08:53:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 08:53:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 08:53:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:53:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-25 08:53:11,185 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-25 08:53:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:11,185 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-25 08:53:11,185 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:53:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-25 08:53:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:53:11,186 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:11,186 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 96, 95, 1, 1, 1, 1] [2018-07-25 08:53:11,187 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash -175780787, now seen corresponding path program 190 times [2018-07-25 08:53:11,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 9312 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:11,827 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:11,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:53:11,828 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:53:11,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:53:11,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:53:11,830 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 101 states. [2018-07-25 08:53:12,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:12,394 INFO L93 Difference]: Finished difference Result 397 states and 398 transitions. [2018-07-25 08:53:12,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:53:12,394 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 388 [2018-07-25 08:53:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:12,394 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:53:12,395 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:53:12,397 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9409 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:53:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:53:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2018-07-25 08:53:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:53:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-07-25 08:53:12,570 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 388 [2018-07-25 08:53:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:12,570 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-07-25 08:53:12,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:53:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-07-25 08:53:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:53:12,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:12,572 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 96, 96, 1, 1, 1, 1] [2018-07-25 08:53:12,572 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1421678519, now seen corresponding path program 191 times [2018-07-25 08:53:12,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 9312 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:13,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:13,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:53:13,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:53:13,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:53:13,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:53:13,631 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 196 states. [2018-07-25 08:53:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:15,619 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2018-07-25 08:53:15,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:53:15,619 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 08:53:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:15,620 INFO L225 Difference]: With dead ends: 590 [2018-07-25 08:53:15,620 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 08:53:15,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13872 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19401, Invalid=66155, Unknown=0, NotChecked=0, Total=85556 [2018-07-25 08:53:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 08:53:15,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 08:53:15,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:53:15,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-25 08:53:15,796 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 390 [2018-07-25 08:53:15,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:15,796 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-25 08:53:15,796 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:53:15,797 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-25 08:53:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:53:15,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:15,798 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 97, 96, 1, 1, 1, 1] [2018-07-25 08:53:15,798 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:15,798 INFO L82 PathProgramCache]: Analyzing trace with hash -368347261, now seen corresponding path program 192 times [2018-07-25 08:53:15,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18818 backedges. 9506 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:16,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:16,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:53:16,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:53:16,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:53:16,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:53:16,385 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 102 states. [2018-07-25 08:53:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:16,957 INFO L93 Difference]: Finished difference Result 401 states and 402 transitions. [2018-07-25 08:53:16,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:53:16,957 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 392 [2018-07-25 08:53:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:16,958 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:53:16,958 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:53:16,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9604 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:53:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:53:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 395. [2018-07-25 08:53:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:53:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-25 08:53:17,136 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-25 08:53:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:17,137 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-25 08:53:17,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:53:17,137 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-25 08:53:17,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:53:17,138 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:17,138 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-07-25 08:53:17,138 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:17,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1794466305, now seen corresponding path program 193 times [2018-07-25 08:53:17,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9506 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:18,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:18,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:53:18,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:53:18,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:53:18,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9899, Invalid=29107, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:53:18,310 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 198 states. [2018-07-25 08:53:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:20,155 INFO L93 Difference]: Finished difference Result 596 states and 598 transitions. [2018-07-25 08:53:20,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:53:20,155 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 08:53:20,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:20,156 INFO L225 Difference]: With dead ends: 596 [2018-07-25 08:53:20,156 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 08:53:20,159 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14162 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=19797, Invalid=67523, Unknown=0, NotChecked=0, Total=87320 [2018-07-25 08:53:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 08:53:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 08:53:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:53:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-25 08:53:20,333 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-25 08:53:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:20,333 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-25 08:53:20,333 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:53:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-25 08:53:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:53:20,334 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:20,334 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 98, 97, 1, 1, 1, 1] [2018-07-25 08:53:20,334 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:20,334 INFO L82 PathProgramCache]: Analyzing trace with hash 304414777, now seen corresponding path program 194 times [2018-07-25 08:53:20,335 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:20,911 INFO L134 CoverageAnalysis]: Checked inductivity of 19208 backedges. 9702 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:20,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:20,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:53:20,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:53:20,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:53:20,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:53:20,913 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 103 states. [2018-07-25 08:53:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:21,494 INFO L93 Difference]: Finished difference Result 405 states and 406 transitions. [2018-07-25 08:53:21,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:53:21,495 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 396 [2018-07-25 08:53:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:21,495 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:53:21,495 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:53:21,498 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9801 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:53:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:53:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2018-07-25 08:53:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:53:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-07-25 08:53:21,681 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 396 [2018-07-25 08:53:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:21,681 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-07-25 08:53:21,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:53:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-07-25 08:53:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:53:21,683 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:21,683 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 1, 1, 1, 1] [2018-07-25 08:53:21,683 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:21,683 INFO L82 PathProgramCache]: Analyzing trace with hash 484757813, now seen corresponding path program 195 times [2018-07-25 08:53:21,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 9702 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:22,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:22,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:53:22,885 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:53:22,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:53:22,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:53:22,888 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 200 states. [2018-07-25 08:53:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:24,967 INFO L93 Difference]: Finished difference Result 602 states and 604 transitions. [2018-07-25 08:53:24,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:53:24,968 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 08:53:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:24,968 INFO L225 Difference]: With dead ends: 602 [2018-07-25 08:53:24,968 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 08:53:24,973 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20197, Invalid=68905, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 08:53:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 08:53:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 08:53:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:53:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-25 08:53:25,155 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 398 [2018-07-25 08:53:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:25,156 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-25 08:53:25,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:53:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-25 08:53:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:53:25,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:25,157 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 99, 98, 1, 1, 1, 1] [2018-07-25 08:53:25,157 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash -449870225, now seen corresponding path program 196 times [2018-07-25 08:53:25,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 9900 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:25,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:25,763 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:53:25,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:53:25,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:53:25,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:53:25,765 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 104 states. [2018-07-25 08:53:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:26,442 INFO L93 Difference]: Finished difference Result 409 states and 410 transitions. [2018-07-25 08:53:26,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:53:26,442 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 400 [2018-07-25 08:53:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:26,443 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:53:26,443 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:53:26,445 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10000 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:53:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:53:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 403. [2018-07-25 08:53:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:53:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-25 08:53:26,626 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-25 08:53:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:26,626 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-25 08:53:26,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:53:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-25 08:53:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:53:26,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:26,628 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-07-25 08:53:26,628 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1466343915, now seen corresponding path program 197 times [2018-07-25 08:53:26,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9900 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:27,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:27,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:53:27,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:53:27,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:53:27,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10301, Invalid=30301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:53:27,753 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 202 states. [2018-07-25 08:53:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:30,035 INFO L93 Difference]: Finished difference Result 608 states and 610 transitions. [2018-07-25 08:53:30,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:53:30,035 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 08:53:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:30,036 INFO L225 Difference]: With dead ends: 608 [2018-07-25 08:53:30,036 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 08:53:30,043 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14751 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20601, Invalid=70301, Unknown=0, NotChecked=0, Total=90902 [2018-07-25 08:53:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 08:53:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 08:53:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:53:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-25 08:53:30,226 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-25 08:53:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:30,227 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-25 08:53:30,227 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:53:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-25 08:53:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:53:30,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:30,228 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 100, 99, 1, 1, 1, 1] [2018-07-25 08:53:30,228 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:30,228 INFO L82 PathProgramCache]: Analyzing trace with hash -461362651, now seen corresponding path program 198 times [2018-07-25 08:53:30,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20000 backedges. 10100 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:30,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:30,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:53:30,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:53:30,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:53:30,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:53:30,888 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 105 states. [2018-07-25 08:53:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:31,497 INFO L93 Difference]: Finished difference Result 413 states and 414 transitions. [2018-07-25 08:53:31,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:53:31,497 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 404 [2018-07-25 08:53:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:31,498 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:53:31,498 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:53:31,500 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:53:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:53:31,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2018-07-25 08:53:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:53:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-07-25 08:53:31,685 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 404 [2018-07-25 08:53:31,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:31,685 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-07-25 08:53:31,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:53:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-07-25 08:53:31,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:53:31,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:31,686 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 100, 100, 1, 1, 1, 1] [2018-07-25 08:53:31,686 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:31,686 INFO L82 PathProgramCache]: Analyzing trace with hash -987942879, now seen corresponding path program 199 times [2018-07-25 08:53:31,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10100 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:32,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:32,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:53:32,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:53:32,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:53:32,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:53:32,850 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 204 states. [2018-07-25 08:53:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:35,042 INFO L93 Difference]: Finished difference Result 614 states and 616 transitions. [2018-07-25 08:53:35,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:53:35,042 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 08:53:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:35,043 INFO L225 Difference]: With dead ends: 614 [2018-07-25 08:53:35,044 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 08:53:35,049 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21009, Invalid=71711, Unknown=0, NotChecked=0, Total=92720 [2018-07-25 08:53:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 08:53:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 08:53:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:53:35,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-25 08:53:35,238 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 406 [2018-07-25 08:53:35,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:35,239 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-25 08:53:35,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:53:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-25 08:53:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:53:35,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:35,240 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 101, 100, 1, 1, 1, 1] [2018-07-25 08:53:35,240 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:35,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1654387877, now seen corresponding path program 200 times [2018-07-25 08:53:35,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 20402 backedges. 10302 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:35,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:35,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:53:35,886 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:53:35,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:53:35,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:53:35,887 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 106 states. [2018-07-25 08:53:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:36,525 INFO L93 Difference]: Finished difference Result 417 states and 418 transitions. [2018-07-25 08:53:36,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:53:36,525 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 408 [2018-07-25 08:53:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:36,526 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:53:36,526 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:53:36,529 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:53:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:53:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 411. [2018-07-25 08:53:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:53:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-25 08:53:36,719 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-25 08:53:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:36,719 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-25 08:53:36,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:53:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-25 08:53:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:53:36,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:36,720 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-07-25 08:53:36,721 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:36,721 INFO L82 PathProgramCache]: Analyzing trace with hash -728917033, now seen corresponding path program 201 times [2018-07-25 08:53:36,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10302 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:37,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:37,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:53:37,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:53:37,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:53:37,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10711, Invalid=31519, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:53:37,989 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 206 states. [2018-07-25 08:53:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:40,300 INFO L93 Difference]: Finished difference Result 620 states and 622 transitions. [2018-07-25 08:53:40,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:53:40,300 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 08:53:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:40,301 INFO L225 Difference]: With dead ends: 620 [2018-07-25 08:53:40,301 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 08:53:40,308 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15352 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=21421, Invalid=73135, Unknown=0, NotChecked=0, Total=94556 [2018-07-25 08:53:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 08:53:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 08:53:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:53:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-25 08:53:40,499 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-25 08:53:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:40,499 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-25 08:53:40,499 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:53:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-25 08:53:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:53:40,500 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:40,501 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 102, 101, 1, 1, 1, 1] [2018-07-25 08:53:40,501 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:40,501 INFO L82 PathProgramCache]: Analyzing trace with hash 723536401, now seen corresponding path program 202 times [2018-07-25 08:53:40,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 10506 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:41,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:41,169 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:53:41,170 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:53:41,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:53:41,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:53:41,171 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 107 states. [2018-07-25 08:53:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:41,873 INFO L93 Difference]: Finished difference Result 421 states and 422 transitions. [2018-07-25 08:53:41,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:53:41,873 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 412 [2018-07-25 08:53:41,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:41,874 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:53:41,874 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 08:53:41,875 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10609 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:53:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 08:53:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2018-07-25 08:53:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:53:42,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-07-25 08:53:42,071 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 412 [2018-07-25 08:53:42,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:42,071 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-07-25 08:53:42,071 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:53:42,071 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-07-25 08:53:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:53:42,073 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:42,073 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 102, 102, 1, 1, 1, 1] [2018-07-25 08:53:42,073 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash -466287347, now seen corresponding path program 203 times [2018-07-25 08:53:42,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10506 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:43,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:43,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:53:43,337 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:53:43,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:53:43,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:53:43,341 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 208 states. [2018-07-25 08:53:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:45,663 INFO L93 Difference]: Finished difference Result 626 states and 628 transitions. [2018-07-25 08:53:45,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:53:45,663 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 08:53:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:45,664 INFO L225 Difference]: With dead ends: 626 [2018-07-25 08:53:45,664 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 08:53:45,670 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=21837, Invalid=74573, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 08:53:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 08:53:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 08:53:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 08:53:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-25 08:53:45,865 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 414 [2018-07-25 08:53:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:45,865 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-25 08:53:45,865 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:53:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-25 08:53:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 08:53:45,866 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:45,866 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 103, 102, 1, 1, 1, 1] [2018-07-25 08:53:45,866 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:45,866 INFO L82 PathProgramCache]: Analyzing trace with hash 955385415, now seen corresponding path program 204 times [2018-07-25 08:53:45,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21218 backedges. 10712 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:46,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:46,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:53:46,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:53:46,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:53:46,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:53:46,617 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 108 states. [2018-07-25 08:53:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:47,279 INFO L93 Difference]: Finished difference Result 425 states and 426 transitions. [2018-07-25 08:53:47,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:53:47,280 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 416 [2018-07-25 08:53:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:47,281 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:53:47,281 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:53:47,285 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10816 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:53:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:53:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2018-07-25 08:53:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:53:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-25 08:53:47,482 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-25 08:53:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:47,482 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-25 08:53:47,483 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:53:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-25 08:53:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:53:47,484 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:47,484 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-07-25 08:53:47,484 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:47,484 INFO L82 PathProgramCache]: Analyzing trace with hash -997684285, now seen corresponding path program 205 times [2018-07-25 08:53:47,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10712 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:48,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:48,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:53:48,719 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:53:48,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:53:48,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11129, Invalid=32761, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:53:48,724 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 210 states. [2018-07-25 08:53:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:50,766 INFO L93 Difference]: Finished difference Result 632 states and 634 transitions. [2018-07-25 08:53:50,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:53:50,766 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 08:53:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:50,767 INFO L225 Difference]: With dead ends: 632 [2018-07-25 08:53:50,767 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 08:53:50,772 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15965 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22257, Invalid=76025, Unknown=0, NotChecked=0, Total=98282 [2018-07-25 08:53:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 08:53:50,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 08:53:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:53:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-25 08:53:50,970 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-25 08:53:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:50,970 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-25 08:53:50,970 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:53:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-25 08:53:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 08:53:50,971 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:50,971 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 104, 103, 1, 1, 1, 1] [2018-07-25 08:53:50,972 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:50,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2079432707, now seen corresponding path program 206 times [2018-07-25 08:53:50,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21632 backedges. 10920 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:51,654 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:51,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:53:51,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:53:51,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:53:51,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:53:51,655 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 109 states. [2018-07-25 08:53:52,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:52,341 INFO L93 Difference]: Finished difference Result 429 states and 430 transitions. [2018-07-25 08:53:52,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:53:52,341 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 420 [2018-07-25 08:53:52,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:52,342 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:53:52,342 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:53:52,345 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:53:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:53:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2018-07-25 08:53:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:53:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-07-25 08:53:52,550 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 420 [2018-07-25 08:53:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:52,550 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-07-25 08:53:52,550 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:53:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-07-25 08:53:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:53:52,552 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:52,552 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 104, 104, 1, 1, 1, 1] [2018-07-25 08:53:52,552 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:52,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1175105543, now seen corresponding path program 207 times [2018-07-25 08:53:52,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 10920 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:53,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:53,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:53:53,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:53:53,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:53:53,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:53:53,995 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 212 states. [2018-07-25 08:53:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:55,921 INFO L93 Difference]: Finished difference Result 638 states and 640 transitions. [2018-07-25 08:53:55,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:53:55,921 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 08:53:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:55,922 INFO L225 Difference]: With dead ends: 638 [2018-07-25 08:53:55,922 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 08:53:55,931 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=22681, Invalid=77491, Unknown=0, NotChecked=0, Total=100172 [2018-07-25 08:53:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 08:53:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 08:53:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:53:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-25 08:53:56,140 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 422 [2018-07-25 08:53:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:56,140 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-25 08:53:56,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:53:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-25 08:53:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:53:56,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:56,141 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 105, 104, 1, 1, 1, 1] [2018-07-25 08:53:56,141 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:56,142 INFO L82 PathProgramCache]: Analyzing trace with hash -576555213, now seen corresponding path program 208 times [2018-07-25 08:53:56,142 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22050 backedges. 11130 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:56,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:56,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:53:56,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:53:56,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:53:56,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:53:56,975 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 110 states. [2018-07-25 08:53:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:57,745 INFO L93 Difference]: Finished difference Result 433 states and 434 transitions. [2018-07-25 08:53:57,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:53:57,745 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 424 [2018-07-25 08:53:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:57,746 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:53:57,746 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 08:53:57,750 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17443, Invalid=28997, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:53:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 08:53:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 427. [2018-07-25 08:53:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:53:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-25 08:53:57,978 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-25 08:53:57,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:57,979 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-25 08:53:57,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:53:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-25 08:53:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:53:57,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:57,980 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-07-25 08:53:57,980 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:57,980 INFO L82 PathProgramCache]: Analyzing trace with hash -18845265, now seen corresponding path program 209 times [2018-07-25 08:53:57,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 11130 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:59,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:59,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:53:59,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:53:59,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:53:59,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11555, Invalid=34027, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:53:59,678 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 214 states. [2018-07-25 08:54:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,533 INFO L93 Difference]: Finished difference Result 644 states and 646 transitions. [2018-07-25 08:54:02,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:54:02,533 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-25 08:54:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,534 INFO L225 Difference]: With dead ends: 644 [2018-07-25 08:54:02,534 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 08:54:02,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16590 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=23109, Invalid=78971, Unknown=0, NotChecked=0, Total=102080 [2018-07-25 08:54:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 08:54:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 08:54:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 08:54:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2018-07-25 08:54:02,759 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 426 [2018-07-25 08:54:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:02,759 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2018-07-25 08:54:02,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:54:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2018-07-25 08:54:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 08:54:02,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:02,761 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 106, 105, 1, 1, 1, 1] [2018-07-25 08:54:02,761 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:02,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1395430423, now seen corresponding path program 210 times [2018-07-25 08:54:02,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 22472 backedges. 11342 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:03,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:03,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:54:03,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:54:03,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:54:03,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:54:03,517 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand 111 states. [2018-07-25 08:54:04,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:04,291 INFO L93 Difference]: Finished difference Result 437 states and 438 transitions. [2018-07-25 08:54:04,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:54:04,291 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 428 [2018-07-25 08:54:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:04,292 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:54:04,292 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 08:54:04,296 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11449 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:54:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 08:54:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2018-07-25 08:54:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 08:54:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2018-07-25 08:54:04,505 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 428 [2018-07-25 08:54:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:04,505 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2018-07-25 08:54:04,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:54:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2018-07-25 08:54:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 08:54:04,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:04,507 INFO L354 BasicCegarLoop]: trace histogram [107, 107, 106, 106, 1, 1, 1, 1] [2018-07-25 08:54:04,507 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:04,507 INFO L82 PathProgramCache]: Analyzing trace with hash -978906907, now seen corresponding path program 211 times [2018-07-25 08:54:04,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 11342 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:06,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:06,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:54:06,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:54:06,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:54:06,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11771, Invalid=34669, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:54:06,008 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 216 states. [2018-07-25 08:54:07,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:07,869 INFO L93 Difference]: Finished difference Result 650 states and 652 transitions. [2018-07-25 08:54:07,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:54:07,869 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 430 [2018-07-25 08:54:07,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:07,870 INFO L225 Difference]: With dead ends: 650 [2018-07-25 08:54:07,870 INFO L226 Difference]: Without dead ends: 433 [2018-07-25 08:54:07,876 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16907 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=23541, Invalid=80465, Unknown=0, NotChecked=0, Total=104006 [2018-07-25 08:54:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-25 08:54:08,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-25 08:54:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-25 08:54:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2018-07-25 08:54:08,090 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 430 [2018-07-25 08:54:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:08,090 INFO L472 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2018-07-25 08:54:08,090 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:54:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2018-07-25 08:54:08,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-25 08:54:08,091 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:08,091 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 107, 106, 1, 1, 1, 1] [2018-07-25 08:54:08,092 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:08,092 INFO L82 PathProgramCache]: Analyzing trace with hash -255959521, now seen corresponding path program 212 times [2018-07-25 08:54:08,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 22898 backedges. 11556 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:08,942 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:08,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:54:08,942 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:54:08,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:54:08,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:54:08,944 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand 112 states. [2018-07-25 08:54:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:09,687 INFO L93 Difference]: Finished difference Result 441 states and 442 transitions. [2018-07-25 08:54:09,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:54:09,688 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 432 [2018-07-25 08:54:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:09,688 INFO L225 Difference]: With dead ends: 441 [2018-07-25 08:54:09,688 INFO L226 Difference]: Without dead ends: 439 [2018-07-25 08:54:09,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11664 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:54:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-25 08:54:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 435. [2018-07-25 08:54:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 08:54:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-07-25 08:54:09,902 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 432 [2018-07-25 08:54:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:09,902 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-07-25 08:54:09,902 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:54:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-07-25 08:54:09,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 08:54:09,904 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:09,904 INFO L354 BasicCegarLoop]: trace histogram [108, 108, 107, 107, 1, 1, 1, 1] [2018-07-25 08:54:09,904 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:09,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1164030565, now seen corresponding path program 213 times [2018-07-25 08:54:09,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 23112 backedges. 11556 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:11,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:11,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:54:11,293 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:54:11,294 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:54:11,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11989, Invalid=35317, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:54:11,298 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 218 states. [2018-07-25 08:54:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:13,744 INFO L93 Difference]: Finished difference Result 656 states and 658 transitions. [2018-07-25 08:54:13,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:54:13,744 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 434 [2018-07-25 08:54:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:13,745 INFO L225 Difference]: With dead ends: 656 [2018-07-25 08:54:13,745 INFO L226 Difference]: Without dead ends: 437 [2018-07-25 08:54:13,748 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17227 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=23977, Invalid=81973, Unknown=0, NotChecked=0, Total=105950 [2018-07-25 08:54:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-25 08:54:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-25 08:54:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 08:54:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 438 transitions. [2018-07-25 08:54:13,961 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 438 transitions. Word has length 434 [2018-07-25 08:54:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:13,962 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 438 transitions. [2018-07-25 08:54:13,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:54:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 438 transitions. [2018-07-25 08:54:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 08:54:13,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:13,963 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 108, 107, 1, 1, 1, 1] [2018-07-25 08:54:13,963 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1032294955, now seen corresponding path program 214 times [2018-07-25 08:54:13,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 23328 backedges. 11772 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:14,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:14,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:54:14,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:54:14,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:54:14,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:54:14,738 INFO L87 Difference]: Start difference. First operand 437 states and 438 transitions. Second operand 113 states. [2018-07-25 08:54:15,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:15,473 INFO L93 Difference]: Finished difference Result 445 states and 446 transitions. [2018-07-25 08:54:15,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:54:15,473 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 436 [2018-07-25 08:54:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:15,474 INFO L225 Difference]: With dead ends: 445 [2018-07-25 08:54:15,474 INFO L226 Difference]: Without dead ends: 443 [2018-07-25 08:54:15,477 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11881 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18427, Invalid=30635, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:54:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-25 08:54:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 439. [2018-07-25 08:54:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-25 08:54:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 440 transitions. [2018-07-25 08:54:15,698 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 440 transitions. Word has length 436 [2018-07-25 08:54:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:15,699 INFO L472 AbstractCegarLoop]: Abstraction has 439 states and 440 transitions. [2018-07-25 08:54:15,699 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:54:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 440 transitions. [2018-07-25 08:54:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-25 08:54:15,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:15,700 INFO L354 BasicCegarLoop]: trace histogram [109, 109, 108, 108, 1, 1, 1, 1] [2018-07-25 08:54:15,700 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash 101926865, now seen corresponding path program 215 times [2018-07-25 08:54:15,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11772 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:17,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:17,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:54:17,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:54:17,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:54:17,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12209, Invalid=35971, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:54:17,158 INFO L87 Difference]: Start difference. First operand 439 states and 440 transitions. Second operand 220 states. [2018-07-25 08:54:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:19,683 INFO L93 Difference]: Finished difference Result 662 states and 664 transitions. [2018-07-25 08:54:19,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:54:19,683 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 438 [2018-07-25 08:54:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:19,684 INFO L225 Difference]: With dead ends: 662 [2018-07-25 08:54:19,684 INFO L226 Difference]: Without dead ends: 441 [2018-07-25 08:54:19,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17550 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=24417, Invalid=83495, Unknown=0, NotChecked=0, Total=107912 [2018-07-25 08:54:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-25 08:54:19,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-25 08:54:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-25 08:54:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2018-07-25 08:54:19,907 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 438 [2018-07-25 08:54:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:19,908 INFO L472 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2018-07-25 08:54:19,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:54:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2018-07-25 08:54:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-25 08:54:19,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:19,909 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 109, 108, 1, 1, 1, 1] [2018-07-25 08:54:19,909 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1460583179, now seen corresponding path program 216 times [2018-07-25 08:54:19,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 23762 backedges. 11990 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:20,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:20,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:54:20,708 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:54:20,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:54:20,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:54:20,709 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand 114 states. [2018-07-25 08:54:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:21,424 INFO L93 Difference]: Finished difference Result 449 states and 450 transitions. [2018-07-25 08:54:21,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:54:21,424 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 440 [2018-07-25 08:54:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:21,425 INFO L225 Difference]: With dead ends: 449 [2018-07-25 08:54:21,425 INFO L226 Difference]: Without dead ends: 447 [2018-07-25 08:54:21,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:54:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-25 08:54:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2018-07-25 08:54:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-25 08:54:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2018-07-25 08:54:21,647 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 440 [2018-07-25 08:54:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:21,647 INFO L472 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2018-07-25 08:54:21,647 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:54:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2018-07-25 08:54:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-25 08:54:21,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:21,649 INFO L354 BasicCegarLoop]: trace histogram [110, 110, 109, 109, 1, 1, 1, 1] [2018-07-25 08:54:21,649 INFO L415 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:21,649 INFO L82 PathProgramCache]: Analyzing trace with hash -833937529, now seen corresponding path program 217 times [2018-07-25 08:54:21,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11990 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:23,100 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:23,100 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:54:23,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:54:23,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:54:23,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12431, Invalid=36631, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:54:23,107 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand 222 states. [2018-07-25 08:54:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:26,866 INFO L93 Difference]: Finished difference Result 668 states and 670 transitions. [2018-07-25 08:54:26,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:54:26,866 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 442 [2018-07-25 08:54:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:26,867 INFO L225 Difference]: With dead ends: 668 [2018-07-25 08:54:26,867 INFO L226 Difference]: Without dead ends: 445 [2018-07-25 08:54:26,872 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17876 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=24861, Invalid=85031, Unknown=0, NotChecked=0, Total=109892 [2018-07-25 08:54:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-07-25 08:54:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-07-25 08:54:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-07-25 08:54:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 446 transitions. [2018-07-25 08:54:27,093 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 446 transitions. Word has length 442 [2018-07-25 08:54:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:27,094 INFO L472 AbstractCegarLoop]: Abstraction has 445 states and 446 transitions. [2018-07-25 08:54:27,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:54:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 446 transitions. [2018-07-25 08:54:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-25 08:54:27,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:27,095 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 110, 109, 1, 1, 1, 1] [2018-07-25 08:54:27,095 INFO L415 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:27,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2121898559, now seen corresponding path program 218 times [2018-07-25 08:54:27,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 24200 backedges. 12210 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:27,916 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:27,916 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:54:27,916 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:54:27,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:54:27,917 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:54:27,918 INFO L87 Difference]: Start difference. First operand 445 states and 446 transitions. Second operand 115 states. Received shutdown request... [2018-07-25 08:54:28,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:54:28,537 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:54:28,542 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:54:28,543 INFO L202 PluginConnector]: Adding new model up.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:54:28 BoogieIcfgContainer [2018-07-25 08:54:28,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:54:28,546 INFO L168 Benchmark]: Toolchain (without parser) took 253399.52 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 930.6 MB in the end (delta: 544.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 08:54:28,547 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:54:28,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.01 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 08:54:28,548 INFO L168 Benchmark]: Boogie Preprocessor took 25.55 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 08:54:28,548 INFO L168 Benchmark]: RCFGBuilder took 278.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:54:28,549 INFO L168 Benchmark]: TraceAbstraction took 253042.37 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 930.6 MB in the end (delta: 533.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-07-25 08:54:28,554 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.01 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 25.55 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 278.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253042.37 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 930.6 MB in the end (delta: 533.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (445states) and interpolant automaton (currently 212 states, 115 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 214 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 252.9s OverallTime, 220 OverallIterations, 111 TraceHistogramMax, 142.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7095 SDtfs, 3291 SDslu, 32963 SDs, 0 SdLazy, 431665 SolverSat, 22876 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37168 GetRequests, 6215 SyntacticMatches, 0 SemanticMatches, 30952 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119193 ImplicationChecksByTransitivity, 92.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=445occurred in iteration=219, 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: 19.0s AutomataMinimizationTime, 219 MinimizatonAttempts, 436 StatesRemovedByMinimization, 109 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 19.9s SatisfiabilityAnalysisTime, 59.7s InterpolantComputationTime, 49500 NumberOfCodeBlocks, 49500 NumberOfCodeBlocksAsserted, 220 NumberOfCheckSat, 49280 ConstructedInterpolants, 0 QuantifiedInterpolants, 50961067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 220 InterpolantComputations, 2 PerfectInterpolantSequences, 899470/1786730 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/up.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-54-28-566.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/up.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-54-28-566.csv Completed graceful shutdown