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/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:19:49,085 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:19:49,092 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:19:49,104 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:19:49,105 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:19:49,106 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:19:49,107 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:19:49,109 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:19:49,110 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:19:49,111 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:19:49,112 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:19:49,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:19:49,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:19:49,114 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:19:49,116 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:19:49,116 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:19:49,117 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:19:49,119 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:19:49,121 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:19:49,123 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:19:49,124 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:19:49,125 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:19:49,127 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:19:49,128 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:19:49,128 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:19:49,129 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:19:49,130 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:19:49,130 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:19:49,131 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:19:49,132 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:19:49,132 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:19:49,133 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:19:49,136 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:19:49,149 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:19:49,150 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:19:49,151 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:19:49,154 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:19:49,154 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:19:49,155 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:19:49,155 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:19:49,155 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:19:49,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:19:49,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:19:49,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:19:49,216 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:19:49,217 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:19:49,217 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-07-25 13:19:49,218 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-07-25 13:19:49,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:19:49,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:19:49,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:19:49,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:19:49,271 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:19:49,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:19:49,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:19:49,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:19:49,312 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:19:49,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:19:49,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:19:49,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:19:49,334 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:19:49,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/1) ... [2018-07-25 13:19:49,418 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-25 13:19:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:19:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:19:49,570 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:19:49,570 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:19:49 BoogieIcfgContainer [2018-07-25 13:19:49,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:19:49,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:19:49,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:19:49,575 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:19:49,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:19:49" (1/2) ... [2018-07-25 13:19:49,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac23e21 and model type down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:19:49, skipping insertion in model container [2018-07-25 13:19:49,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:19:49" (2/2) ... [2018-07-25 13:19:49,580 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-07-25 13:19:49,590 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:19:49,598 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:19:49,642 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:19:49,643 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:19:49,643 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:19:49,644 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:19:49,644 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:19:49,644 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:19:49,644 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:19:49,645 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:19:49,645 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:19:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-07-25 13:19:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:19:49,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:49,669 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 13:19:49,671 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:49,676 INFO L82 PathProgramCache]: Analyzing trace with hash 28868155, now seen corresponding path program 1 times [2018-07-25 13:19:49,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:49,765 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:19:49,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:19:49,770 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:19:49,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:19:49,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:19:49,789 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2018-07-25 13:19:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:49,834 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2018-07-25 13:19:49,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:19:49,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-07-25 13:19:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:49,847 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:19:49,848 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 13:19:49,853 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 13:19:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 13:19:49,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 13:19:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 13:19:49,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-07-25 13:19:49,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-07-25 13:19:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:49,894 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-07-25 13:19:49,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:19:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-07-25 13:19:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:19:49,895 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:49,895 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 13:19:49,896 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:49,896 INFO L82 PathProgramCache]: Analyzing trace with hash 892360290, now seen corresponding path program 1 times [2018-07-25 13:19:49,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:49,932 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:19:49,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:19:49,935 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:19:49,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:19:49,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:19:49,936 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 5 states. [2018-07-25 13:19:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:49,982 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-07-25 13:19:49,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:19:49,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 13:19:49,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:49,984 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:19:49,984 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 13:19:49,985 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 13:19:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 13:19:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-07-25 13:19:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:19:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 13:19:49,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 13:19:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:49,989 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 13:19:49,990 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:19:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 13:19:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:19:49,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:49,991 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:19:49,991 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:49,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1435154486, now seen corresponding path program 1 times [2018-07-25 13:19:49,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:50,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:50,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:19:50,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:19:50,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:19:50,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:19:50,049 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2018-07-25 13:19:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,121 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-25 13:19:50,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:19:50,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-07-25 13:19:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,122 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:19:50,125 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:19:50,126 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 13:19:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:19:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 13:19:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 13:19:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-07-25 13:19:50,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2018-07-25 13:19:50,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,132 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-07-25 13:19:50,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:19:50,133 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-07-25 13:19:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 13:19:50,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,133 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2018-07-25 13:19:50,134 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,134 INFO L82 PathProgramCache]: Analyzing trace with hash 299903555, now seen corresponding path program 2 times [2018-07-25 13:19:50,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:50,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:50,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:19:50,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:19:50,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:19:50,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:19:50,202 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 6 states. [2018-07-25 13:19:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,246 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-07-25 13:19:50,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:19:50,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-07-25 13:19:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,247 INFO L225 Difference]: With dead ends: 18 [2018-07-25 13:19:50,248 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 13:19:50,248 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:19:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 13:19:50,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2018-07-25 13:19:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 13:19:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-07-25 13:19:50,264 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2018-07-25 13:19:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,264 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-07-25 13:19:50,264 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:19:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-07-25 13:19:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 13:19:50,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,265 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2018-07-25 13:19:50,266 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash 444573547, now seen corresponding path program 3 times [2018-07-25 13:19:50,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:50,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:50,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:19:50,332 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:19:50,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:19:50,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:19:50,336 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 8 states. [2018-07-25 13:19:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,386 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-07-25 13:19:50,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:19:50,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2018-07-25 13:19:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,387 INFO L225 Difference]: With dead ends: 22 [2018-07-25 13:19:50,387 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 13:19:50,388 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 13:19:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 13:19:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 13:19:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 13:19:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 13:19:50,393 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2018-07-25 13:19:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,393 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 13:19:50,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:19:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 13:19:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 13:19:50,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,394 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2018-07-25 13:19:50,395 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,395 INFO L82 PathProgramCache]: Analyzing trace with hash -372734382, now seen corresponding path program 4 times [2018-07-25 13:19:50,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:50,425 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 13:19:50,425 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:50,425 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:19:50,426 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:19:50,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:19:50,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:19:50,427 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-25 13:19:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,493 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 13:19:50,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:19:50,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 13:19:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,494 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:19:50,494 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 13:19:50,496 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:19:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 13:19:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-07-25 13:19:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 13:19:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 13:19:50,501 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 13:19:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,502 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 13:19:50,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:19:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 13:19:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:19:50,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,506 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2018-07-25 13:19:50,507 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1715389510, now seen corresponding path program 5 times [2018-07-25 13:19:50,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:50,574 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 13:19:50,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:50,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:19:50,575 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:19:50,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:19:50,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:19:50,576 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 10 states. [2018-07-25 13:19:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,643 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-07-25 13:19:50,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:19:50,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2018-07-25 13:19:50,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,644 INFO L225 Difference]: With dead ends: 27 [2018-07-25 13:19:50,644 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 13:19:50,649 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 13:19:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 13:19:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 13:19:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 13:19:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-07-25 13:19:50,655 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2018-07-25 13:19:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,656 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-07-25 13:19:50,656 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:19:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-07-25 13:19:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 13:19:50,657 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,657 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1] [2018-07-25 13:19:50,657 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1966301325, now seen corresponding path program 6 times [2018-07-25 13:19:50,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:50,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:50,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:19:50,688 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:19:50,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:19:50,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:19:50,689 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 8 states. [2018-07-25 13:19:50,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,744 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-07-25 13:19:50,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:19:50,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-07-25 13:19:50,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,747 INFO L225 Difference]: With dead ends: 24 [2018-07-25 13:19:50,747 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 13:19:50,747 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:19:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 13:19:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-07-25 13:19:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 13:19:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-07-25 13:19:50,756 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2018-07-25 13:19:50,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,756 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-07-25 13:19:50,757 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:19:50,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-07-25 13:19:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 13:19:50,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,760 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2018-07-25 13:19:50,760 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,761 INFO L82 PathProgramCache]: Analyzing trace with hash 170102939, now seen corresponding path program 7 times [2018-07-25 13:19:50,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:50,821 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:50,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:19:50,821 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:19:50,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:19:50,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:19:50,824 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 12 states. [2018-07-25 13:19:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,875 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-25 13:19:50,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:19:50,876 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2018-07-25 13:19:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,878 INFO L225 Difference]: With dead ends: 32 [2018-07-25 13:19:50,878 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 13:19:50,879 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 13:19:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 13:19:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 13:19:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 13:19:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 13:19:50,888 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-07-25 13:19:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,888 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 13:19:50,889 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:19:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 13:19:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:19:50,890 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,890 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2018-07-25 13:19:50,890 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1500682686, now seen corresponding path program 8 times [2018-07-25 13:19:50,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:50,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:50,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:19:50,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:19:50,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:19:50,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:19:50,923 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 9 states. [2018-07-25 13:19:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,971 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-07-25 13:19:50,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:19:50,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 13:19:50,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,972 INFO L225 Difference]: With dead ends: 27 [2018-07-25 13:19:50,972 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 13:19:50,973 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:19:50,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 13:19:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-07-25 13:19:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 13:19:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 13:19:50,979 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 13:19:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,979 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 13:19:50,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:19:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 13:19:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 13:19:50,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,981 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2018-07-25 13:19:50,981 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash 953016234, now seen corresponding path program 9 times [2018-07-25 13:19:50,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:19:51,031 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:19:51,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:19:51,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:19:51,032 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 14 states. [2018-07-25 13:19:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:51,096 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-07-25 13:19:51,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:19:51,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2018-07-25 13:19:51,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:51,098 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:19:51,098 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 13:19:51,099 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 13:19:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 13:19:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 13:19:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 13:19:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-07-25 13:19:51,105 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2018-07-25 13:19:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:51,106 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-07-25 13:19:51,106 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:19:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-07-25 13:19:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 13:19:51,107 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:51,107 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1] [2018-07-25 13:19:51,109 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:51,109 INFO L82 PathProgramCache]: Analyzing trace with hash 954455203, now seen corresponding path program 10 times [2018-07-25 13:19:51,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:19:51,160 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:19:51,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:19:51,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:19:51,161 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 10 states. [2018-07-25 13:19:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:51,228 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-07-25 13:19:51,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:19:51,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2018-07-25 13:19:51,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:51,231 INFO L225 Difference]: With dead ends: 30 [2018-07-25 13:19:51,231 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 13:19:51,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:19:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 13:19:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-07-25 13:19:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 13:19:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-07-25 13:19:51,244 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2018-07-25 13:19:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:51,244 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-07-25 13:19:51,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:19:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-07-25 13:19:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 13:19:51,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:51,247 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2018-07-25 13:19:51,247 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:51,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1891485237, now seen corresponding path program 11 times [2018-07-25 13:19:51,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 42 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,310 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:19:51,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:19:51,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:19:51,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:19:51,312 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 16 states. [2018-07-25 13:19:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:51,373 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-07-25 13:19:51,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:19:51,373 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-07-25 13:19:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:51,374 INFO L225 Difference]: With dead ends: 42 [2018-07-25 13:19:51,374 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 13:19:51,375 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 13:19:51,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 13:19:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 13:19:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 13:19:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 13:19:51,381 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 23 [2018-07-25 13:19:51,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:51,381 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 13:19:51,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:19:51,381 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 13:19:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 13:19:51,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:51,382 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1] [2018-07-25 13:19:51,383 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:51,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1972832718, now seen corresponding path program 12 times [2018-07-25 13:19:51,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,428 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:19:51,429 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:19:51,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:19:51,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:19:51,430 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 11 states. [2018-07-25 13:19:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:51,483 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 13:19:51,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:19:51,484 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2018-07-25 13:19:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:51,485 INFO L225 Difference]: With dead ends: 33 [2018-07-25 13:19:51,485 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 13:19:51,486 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:19:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 13:19:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-07-25 13:19:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 13:19:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 13:19:51,494 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 13:19:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:51,495 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 13:19:51,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:19:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 13:19:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:19:51,496 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:51,496 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2018-07-25 13:19:51,497 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:51,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1811598438, now seen corresponding path program 13 times [2018-07-25 13:19:51,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:19:51,558 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:19:51,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:19:51,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:19:51,560 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 18 states. [2018-07-25 13:19:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:51,636 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-07-25 13:19:51,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:19:51,637 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2018-07-25 13:19:51,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:51,638 INFO L225 Difference]: With dead ends: 47 [2018-07-25 13:19:51,638 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 13:19:51,639 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 13:19:51,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 13:19:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 13:19:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 13:19:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-07-25 13:19:51,647 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2018-07-25 13:19:51,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:51,648 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-07-25 13:19:51,648 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:19:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-07-25 13:19:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 13:19:51,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:51,649 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1] [2018-07-25 13:19:51,651 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:51,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1422117331, now seen corresponding path program 14 times [2018-07-25 13:19:51,652 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:19:51,704 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:19:51,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:19:51,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:19:51,706 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 12 states. [2018-07-25 13:19:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:51,767 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-07-25 13:19:51,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:19:51,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-07-25 13:19:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:51,768 INFO L225 Difference]: With dead ends: 36 [2018-07-25 13:19:51,768 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 13:19:51,769 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:19:51,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 13:19:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-07-25 13:19:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 13:19:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-07-25 13:19:51,776 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2018-07-25 13:19:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:51,776 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-07-25 13:19:51,776 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:19:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-07-25 13:19:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:51,777 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:51,777 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1] [2018-07-25 13:19:51,778 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:51,778 INFO L82 PathProgramCache]: Analyzing trace with hash 855220987, now seen corresponding path program 15 times [2018-07-25 13:19:51,778 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:19:51,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:19:51,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:19:51,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:19:51,839 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 20 states. [2018-07-25 13:19:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:51,920 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2018-07-25 13:19:51,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:19:51,921 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 29 [2018-07-25 13:19:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:51,922 INFO L225 Difference]: With dead ends: 52 [2018-07-25 13:19:51,922 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 13:19:51,923 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 13:19:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 13:19:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 13:19:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 13:19:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 13:19:51,933 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 29 [2018-07-25 13:19:51,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:51,933 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 13:19:51,934 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:19:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 13:19:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 13:19:51,938 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:51,939 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1] [2018-07-25 13:19:51,939 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash 365245986, now seen corresponding path program 16 times [2018-07-25 13:19:51,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:19:51,990 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:19:51,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:19:51,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:19:51,991 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 13 states. [2018-07-25 13:19:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:52,056 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-07-25 13:19:52,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:19:52,056 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2018-07-25 13:19:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:52,059 INFO L225 Difference]: With dead ends: 39 [2018-07-25 13:19:52,060 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 13:19:52,060 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:19:52,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 13:19:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2018-07-25 13:19:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 13:19:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 13:19:52,073 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 13:19:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:52,074 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 13:19:52,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:19:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 13:19:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 13:19:52,076 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:52,077 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1] [2018-07-25 13:19:52,077 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:52,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1185859702, now seen corresponding path program 17 times [2018-07-25 13:19:52,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 90 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:52,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:52,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:19:52,152 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:19:52,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:19:52,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:19:52,153 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 22 states. [2018-07-25 13:19:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:52,256 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-07-25 13:19:52,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:19:52,256 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 32 [2018-07-25 13:19:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:52,257 INFO L225 Difference]: With dead ends: 57 [2018-07-25 13:19:52,257 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 13:19:52,259 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 13:19:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 13:19:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 13:19:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 13:19:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-07-25 13:19:52,280 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 32 [2018-07-25 13:19:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:52,280 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-07-25 13:19:52,281 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:19:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-07-25 13:19:52,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 13:19:52,282 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:52,282 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1] [2018-07-25 13:19:52,282 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:52,282 INFO L82 PathProgramCache]: Analyzing trace with hash 562724611, now seen corresponding path program 18 times [2018-07-25 13:19:52,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 55 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:52,348 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:52,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:19:52,349 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:19:52,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:19:52,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:19:52,350 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 14 states. [2018-07-25 13:19:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:52,411 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2018-07-25 13:19:52,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:19:52,412 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-07-25 13:19:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:52,413 INFO L225 Difference]: With dead ends: 42 [2018-07-25 13:19:52,413 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 13:19:52,414 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:19:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 13:19:52,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-07-25 13:19:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 13:19:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-07-25 13:19:52,424 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 33 [2018-07-25 13:19:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:52,424 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-07-25 13:19:52,424 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:19:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-07-25 13:19:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 13:19:52,425 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:52,426 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1] [2018-07-25 13:19:52,426 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:52,426 INFO L82 PathProgramCache]: Analyzing trace with hash -387462101, now seen corresponding path program 19 times [2018-07-25 13:19:52,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 110 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:52,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:52,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:19:52,523 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:19:52,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:19:52,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:19:52,524 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 24 states. [2018-07-25 13:19:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:52,637 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-25 13:19:52,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:19:52,638 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 35 [2018-07-25 13:19:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:52,639 INFO L225 Difference]: With dead ends: 62 [2018-07-25 13:19:52,639 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 13:19:52,640 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:19:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 13:19:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 13:19:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 13:19:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 13:19:52,650 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 35 [2018-07-25 13:19:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:52,650 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 13:19:52,650 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:19:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 13:19:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 13:19:52,652 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:52,653 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1] [2018-07-25 13:19:52,653 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:52,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1970526702, now seen corresponding path program 20 times [2018-07-25 13:19:52,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 66 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:52,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:52,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:19:52,712 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:19:52,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:19:52,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:19:52,713 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 15 states. [2018-07-25 13:19:52,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:52,778 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 13:19:52,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:19:52,779 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-07-25 13:19:52,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:52,780 INFO L225 Difference]: With dead ends: 45 [2018-07-25 13:19:52,780 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 13:19:52,781 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:19:52,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 13:19:52,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-07-25 13:19:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 13:19:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 13:19:52,788 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 13:19:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:52,788 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 13:19:52,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:19:52,789 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 13:19:52,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 13:19:52,789 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:52,789 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1] [2018-07-25 13:19:52,790 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:52,790 INFO L82 PathProgramCache]: Analyzing trace with hash 404482938, now seen corresponding path program 21 times [2018-07-25 13:19:52,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 132 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:52,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:52,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:19:52,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:19:52,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:19:52,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:19:52,880 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 26 states. [2018-07-25 13:19:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:53,002 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-25 13:19:53,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:19:53,002 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 38 [2018-07-25 13:19:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:53,003 INFO L225 Difference]: With dead ends: 67 [2018-07-25 13:19:53,003 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 13:19:53,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:19:53,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 13:19:53,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 13:19:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 13:19:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-07-25 13:19:53,016 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2018-07-25 13:19:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:53,017 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-07-25 13:19:53,017 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:19:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-07-25 13:19:53,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 13:19:53,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:53,018 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1, 1] [2018-07-25 13:19:53,018 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:53,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1932135373, now seen corresponding path program 22 times [2018-07-25 13:19:53,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 78 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:53,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:53,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:19:53,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:19:53,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:19:53,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:19:53,097 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 16 states. [2018-07-25 13:19:53,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:53,166 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2018-07-25 13:19:53,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:19:53,166 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2018-07-25 13:19:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:53,167 INFO L225 Difference]: With dead ends: 48 [2018-07-25 13:19:53,167 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 13:19:53,168 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:19:53,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 13:19:53,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2018-07-25 13:19:53,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 13:19:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-07-25 13:19:53,179 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 39 [2018-07-25 13:19:53,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:53,179 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-07-25 13:19:53,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:19:53,179 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-07-25 13:19:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 13:19:53,180 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:53,180 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1] [2018-07-25 13:19:53,181 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:53,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1356155557, now seen corresponding path program 23 times [2018-07-25 13:19:53,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 156 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:53,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:53,287 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:19:53,287 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:19:53,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:19:53,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:19:53,288 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 28 states. [2018-07-25 13:19:53,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:53,426 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2018-07-25 13:19:53,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:19:53,426 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2018-07-25 13:19:53,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:53,427 INFO L225 Difference]: With dead ends: 72 [2018-07-25 13:19:53,427 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 13:19:53,429 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 13:19:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 13:19:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 13:19:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 13:19:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 13:19:53,437 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 41 [2018-07-25 13:19:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:53,438 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 13:19:53,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:19:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 13:19:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 13:19:53,438 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:53,439 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1] [2018-07-25 13:19:53,439 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:53,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1277675010, now seen corresponding path program 24 times [2018-07-25 13:19:53,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 91 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:53,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:53,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:19:53,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:19:53,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:19:53,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:19:53,513 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 17 states. [2018-07-25 13:19:53,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:53,587 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-07-25 13:19:53,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:19:53,588 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2018-07-25 13:19:53,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:53,589 INFO L225 Difference]: With dead ends: 51 [2018-07-25 13:19:53,589 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 13:19:53,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:19:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 13:19:53,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-07-25 13:19:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 13:19:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 13:19:53,601 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 13:19:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:53,602 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 13:19:53,602 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:19:53,602 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 13:19:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 13:19:53,603 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:53,603 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1] [2018-07-25 13:19:53,604 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash -514896022, now seen corresponding path program 25 times [2018-07-25 13:19:53,604 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 182 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:53,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:53,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:19:53,767 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:19:53,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:19:53,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:19:53,768 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 30 states. [2018-07-25 13:19:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:53,935 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-07-25 13:19:53,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:19:53,935 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 44 [2018-07-25 13:19:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:53,936 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:19:53,936 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 13:19:53,938 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 13:19:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 13:19:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 13:19:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 13:19:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-07-25 13:19:53,946 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 44 [2018-07-25 13:19:53,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:53,946 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-07-25 13:19:53,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:19:53,946 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-07-25 13:19:53,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 13:19:53,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:53,947 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1, 1] [2018-07-25 13:19:53,947 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:53,947 INFO L82 PathProgramCache]: Analyzing trace with hash -826005149, now seen corresponding path program 26 times [2018-07-25 13:19:53,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 105 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:54,017 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:54,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:19:54,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:19:54,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:19:54,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:19:54,018 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 18 states. [2018-07-25 13:19:54,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:54,090 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-07-25 13:19:54,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:19:54,091 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2018-07-25 13:19:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:54,091 INFO L225 Difference]: With dead ends: 54 [2018-07-25 13:19:54,091 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 13:19:54,092 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:19:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 13:19:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-07-25 13:19:54,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 13:19:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-07-25 13:19:54,100 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 45 [2018-07-25 13:19:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:54,101 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-07-25 13:19:54,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:19:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-07-25 13:19:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 13:19:54,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:54,102 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1] [2018-07-25 13:19:54,102 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:54,102 INFO L82 PathProgramCache]: Analyzing trace with hash 778067595, now seen corresponding path program 27 times [2018-07-25 13:19:54,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 210 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:54,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:54,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:19:54,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:19:54,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:19:54,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:19:54,213 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 32 states. [2018-07-25 13:19:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:54,364 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2018-07-25 13:19:54,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:19:54,365 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 47 [2018-07-25 13:19:54,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:54,365 INFO L225 Difference]: With dead ends: 82 [2018-07-25 13:19:54,366 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 13:19:54,367 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 13:19:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 13:19:54,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 13:19:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 13:19:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 13:19:54,378 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 47 [2018-07-25 13:19:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:54,378 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 13:19:54,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:19:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 13:19:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 13:19:54,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:54,379 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1] [2018-07-25 13:19:54,379 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1065489906, now seen corresponding path program 28 times [2018-07-25 13:19:54,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 120 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:54,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:54,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:19:54,451 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:19:54,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:19:54,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:19:54,452 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 19 states. [2018-07-25 13:19:54,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:54,532 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 13:19:54,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:19:54,532 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-07-25 13:19:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:54,533 INFO L225 Difference]: With dead ends: 57 [2018-07-25 13:19:54,533 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 13:19:54,534 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:19:54,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 13:19:54,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-07-25 13:19:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 13:19:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 13:19:54,541 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 13:19:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:54,542 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 13:19:54,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:19:54,542 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 13:19:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 13:19:54,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:54,543 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2018-07-25 13:19:54,543 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1733649242, now seen corresponding path program 29 times [2018-07-25 13:19:54,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 240 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:54,649 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:54,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:19:54,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:19:54,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:19:54,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:19:54,651 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 34 states. [2018-07-25 13:19:54,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:54,817 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2018-07-25 13:19:54,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:19:54,817 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 50 [2018-07-25 13:19:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:54,818 INFO L225 Difference]: With dead ends: 87 [2018-07-25 13:19:54,818 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 13:19:54,819 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 13:19:54,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 13:19:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 13:19:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 13:19:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2018-07-25 13:19:54,826 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2018-07-25 13:19:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:54,826 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2018-07-25 13:19:54,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:19:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2018-07-25 13:19:54,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 13:19:54,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:54,827 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1] [2018-07-25 13:19:54,827 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:54,827 INFO L82 PathProgramCache]: Analyzing trace with hash 166928019, now seen corresponding path program 30 times [2018-07-25 13:19:54,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 136 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:54,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:54,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:19:54,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:19:54,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:19:54,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:19:54,899 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 20 states. [2018-07-25 13:19:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:54,973 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2018-07-25 13:19:54,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:19:54,973 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2018-07-25 13:19:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:54,974 INFO L225 Difference]: With dead ends: 60 [2018-07-25 13:19:54,974 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 13:19:54,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:19:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 13:19:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-07-25 13:19:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 13:19:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-07-25 13:19:54,983 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 51 [2018-07-25 13:19:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:54,983 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-07-25 13:19:54,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:19:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-07-25 13:19:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 13:19:54,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:54,985 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 1, 1, 1, 1] [2018-07-25 13:19:54,985 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1504102331, now seen corresponding path program 31 times [2018-07-25 13:19:54,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 272 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:55,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:55,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:19:55,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:19:55,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:19:55,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:19:55,107 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 36 states. [2018-07-25 13:19:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:55,277 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-25 13:19:55,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:19:55,278 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 53 [2018-07-25 13:19:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:55,278 INFO L225 Difference]: With dead ends: 92 [2018-07-25 13:19:55,278 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 13:19:55,280 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 13:19:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 13:19:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 13:19:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 13:19:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 13:19:55,288 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 53 [2018-07-25 13:19:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:55,289 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 13:19:55,289 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:19:55,289 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 13:19:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 13:19:55,289 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:55,289 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1, 1] [2018-07-25 13:19:55,290 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:55,290 INFO L82 PathProgramCache]: Analyzing trace with hash 721753570, now seen corresponding path program 32 times [2018-07-25 13:19:55,290 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 153 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:55,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:55,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:19:55,365 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:19:55,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:19:55,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:19:55,366 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 21 states. [2018-07-25 13:19:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:55,447 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2018-07-25 13:19:55,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:19:55,447 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 54 [2018-07-25 13:19:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:55,448 INFO L225 Difference]: With dead ends: 63 [2018-07-25 13:19:55,448 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 13:19:55,449 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:19:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 13:19:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2018-07-25 13:19:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 13:19:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 13:19:55,456 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 13:19:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:55,457 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 13:19:55,457 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:19:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 13:19:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 13:19:55,457 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:55,458 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 1, 1, 1, 1] [2018-07-25 13:19:55,458 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:55,458 INFO L82 PathProgramCache]: Analyzing trace with hash 2115512138, now seen corresponding path program 33 times [2018-07-25 13:19:55,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 306 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:55,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:55,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:19:55,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:19:55,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:19:55,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:19:55,577 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 38 states. [2018-07-25 13:19:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:55,755 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2018-07-25 13:19:55,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:19:55,756 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 56 [2018-07-25 13:19:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:55,756 INFO L225 Difference]: With dead ends: 97 [2018-07-25 13:19:55,756 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 13:19:55,758 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=757, Invalid=2323, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:19:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 13:19:55,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 13:19:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 13:19:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2018-07-25 13:19:55,767 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 56 [2018-07-25 13:19:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:55,767 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2018-07-25 13:19:55,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:19:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2018-07-25 13:19:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 13:19:55,767 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:55,768 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1] [2018-07-25 13:19:55,768 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:55,768 INFO L82 PathProgramCache]: Analyzing trace with hash -343878717, now seen corresponding path program 34 times [2018-07-25 13:19:55,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 171 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:55,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:55,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:19:55,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:19:55,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:19:55,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:19:55,846 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 22 states. [2018-07-25 13:19:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:55,930 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2018-07-25 13:19:55,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:19:55,930 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2018-07-25 13:19:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:55,931 INFO L225 Difference]: With dead ends: 66 [2018-07-25 13:19:55,931 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 13:19:55,932 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:19:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 13:19:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-07-25 13:19:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 13:19:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2018-07-25 13:19:55,940 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 57 [2018-07-25 13:19:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:55,941 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2018-07-25 13:19:55,941 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:19:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2018-07-25 13:19:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 13:19:55,941 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:55,942 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 1, 1, 1, 1] [2018-07-25 13:19:55,942 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:55,942 INFO L82 PathProgramCache]: Analyzing trace with hash 245100779, now seen corresponding path program 35 times [2018-07-25 13:19:55,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 342 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:56,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:56,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:19:56,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:19:56,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:19:56,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:19:56,086 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 40 states. [2018-07-25 13:19:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:56,311 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2018-07-25 13:19:56,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:19:56,311 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 59 [2018-07-25 13:19:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:56,312 INFO L225 Difference]: With dead ends: 102 [2018-07-25 13:19:56,312 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 13:19:56,315 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 13:19:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 13:19:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 13:19:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 13:19:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 13:19:56,326 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 59 [2018-07-25 13:19:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:56,326 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 13:19:56,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:19:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 13:19:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 13:19:56,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:56,329 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1, 1] [2018-07-25 13:19:56,329 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:56,329 INFO L82 PathProgramCache]: Analyzing trace with hash 379241938, now seen corresponding path program 36 times [2018-07-25 13:19:56,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 190 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:56,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:56,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:19:56,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:19:56,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:19:56,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:19:56,444 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 23 states. [2018-07-25 13:19:56,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:56,628 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 13:19:56,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:19:56,628 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 60 [2018-07-25 13:19:56,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:56,629 INFO L225 Difference]: With dead ends: 69 [2018-07-25 13:19:56,629 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 13:19:56,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:19:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 13:19:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-07-25 13:19:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 13:19:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 13:19:56,643 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 13:19:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:56,643 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 13:19:56,643 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:19:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 13:19:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 13:19:56,644 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:56,644 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 1, 1, 1, 1] [2018-07-25 13:19:56,644 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash -620651718, now seen corresponding path program 37 times [2018-07-25 13:19:56,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 380 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:56,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:56,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:19:56,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:19:56,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:19:56,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:19:56,803 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 42 states. [2018-07-25 13:19:56,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:56,922 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2018-07-25 13:19:56,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:19:56,922 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 62 [2018-07-25 13:19:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:56,923 INFO L225 Difference]: With dead ends: 107 [2018-07-25 13:19:56,923 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 13:19:56,925 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 13:19:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 13:19:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 13:19:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 13:19:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2018-07-25 13:19:56,934 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2018-07-25 13:19:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:56,934 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2018-07-25 13:19:56,934 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:19:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2018-07-25 13:19:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 13:19:56,935 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:56,935 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1] [2018-07-25 13:19:56,935 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:56,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1259030771, now seen corresponding path program 38 times [2018-07-25 13:19:56,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 210 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:57,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:57,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:19:57,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:19:57,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:19:57,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:19:57,027 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 24 states. [2018-07-25 13:19:57,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:57,121 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2018-07-25 13:19:57,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:19:57,121 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 63 [2018-07-25 13:19:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:57,122 INFO L225 Difference]: With dead ends: 72 [2018-07-25 13:19:57,122 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 13:19:57,123 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:19:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 13:19:57,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2018-07-25 13:19:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 13:19:57,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2018-07-25 13:19:57,134 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 63 [2018-07-25 13:19:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:57,135 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2018-07-25 13:19:57,135 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:19:57,135 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2018-07-25 13:19:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 13:19:57,135 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:57,136 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1] [2018-07-25 13:19:57,136 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:57,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1252140517, now seen corresponding path program 39 times [2018-07-25 13:19:57,136 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:57,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:57,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:19:57,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:19:57,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:19:57,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:19:57,280 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 44 states. [2018-07-25 13:19:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:57,533 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2018-07-25 13:19:57,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:19:57,533 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 65 [2018-07-25 13:19:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:57,534 INFO L225 Difference]: With dead ends: 112 [2018-07-25 13:19:57,534 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 13:19:57,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1009, Invalid=3151, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:19:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 13:19:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 13:19:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 13:19:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 13:19:57,545 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 65 [2018-07-25 13:19:57,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:57,546 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 13:19:57,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:19:57,546 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 13:19:57,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 13:19:57,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:57,549 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1] [2018-07-25 13:19:57,549 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:57,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1414715966, now seen corresponding path program 40 times [2018-07-25 13:19:57,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 231 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:57,666 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:57,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:19:57,667 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:19:57,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:19:57,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:19:57,668 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 25 states. [2018-07-25 13:19:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:57,771 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2018-07-25 13:19:57,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:19:57,771 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 66 [2018-07-25 13:19:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:57,772 INFO L225 Difference]: With dead ends: 75 [2018-07-25 13:19:57,772 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 13:19:57,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:19:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 13:19:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-07-25 13:19:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 13:19:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 13:19:57,783 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 13:19:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:57,783 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 13:19:57,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:19:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 13:19:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 13:19:57,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:57,784 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 1, 1, 1, 1] [2018-07-25 13:19:57,785 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:57,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1962655530, now seen corresponding path program 41 times [2018-07-25 13:19:57,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 462 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:57,942 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:57,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:19:57,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:19:57,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:19:57,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:19:57,944 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 46 states. [2018-07-25 13:19:58,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:58,200 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2018-07-25 13:19:58,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:19:58,201 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 68 [2018-07-25 13:19:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:58,201 INFO L225 Difference]: With dead ends: 117 [2018-07-25 13:19:58,202 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 13:19:58,203 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1101, Invalid=3455, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:19:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 13:19:58,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 13:19:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 13:19:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2018-07-25 13:19:58,214 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 68 [2018-07-25 13:19:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:58,215 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2018-07-25 13:19:58,215 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:19:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2018-07-25 13:19:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 13:19:58,216 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:58,216 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1, 1] [2018-07-25 13:19:58,216 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:58,216 INFO L82 PathProgramCache]: Analyzing trace with hash -894403037, now seen corresponding path program 42 times [2018-07-25 13:19:58,216 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 253 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:58,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:58,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:19:58,313 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:19:58,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:19:58,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:19:58,313 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 26 states. [2018-07-25 13:19:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:58,412 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2018-07-25 13:19:58,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:19:58,413 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 69 [2018-07-25 13:19:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:58,413 INFO L225 Difference]: With dead ends: 78 [2018-07-25 13:19:58,414 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 13:19:58,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:19:58,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 13:19:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2018-07-25 13:19:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 13:19:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2018-07-25 13:19:58,425 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 69 [2018-07-25 13:19:58,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:58,425 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2018-07-25 13:19:58,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:19:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2018-07-25 13:19:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 13:19:58,426 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:58,426 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1] [2018-07-25 13:19:58,426 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:58,427 INFO L82 PathProgramCache]: Analyzing trace with hash -527793333, now seen corresponding path program 43 times [2018-07-25 13:19:58,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 506 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:58,578 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:58,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:19:58,578 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:19:58,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:19:58,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:19:58,579 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 48 states. [2018-07-25 13:19:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:58,849 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-25 13:19:58,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:19:58,849 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 71 [2018-07-25 13:19:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:58,850 INFO L225 Difference]: With dead ends: 122 [2018-07-25 13:19:58,850 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 13:19:58,852 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1197, Invalid=3773, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:19:58,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 13:19:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 13:19:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 13:19:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 13:19:58,863 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 71 [2018-07-25 13:19:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:58,863 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 13:19:58,863 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:19:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 13:19:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 13:19:58,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:58,864 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1] [2018-07-25 13:19:58,864 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1792657998, now seen corresponding path program 44 times [2018-07-25 13:19:58,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 276 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:58,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:58,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:19:58,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:19:58,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:19:58,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:19:58,962 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2018-07-25 13:19:59,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:59,089 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 13:19:59,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:19:59,089 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 72 [2018-07-25 13:19:59,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:59,090 INFO L225 Difference]: With dead ends: 81 [2018-07-25 13:19:59,090 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 13:19:59,091 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:19:59,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 13:19:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-07-25 13:19:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 13:19:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 13:19:59,104 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 13:19:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:59,105 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 13:19:59,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:19:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 13:19:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 13:19:59,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:59,106 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 1, 1, 1, 1] [2018-07-25 13:19:59,106 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:59,106 INFO L82 PathProgramCache]: Analyzing trace with hash -462384358, now seen corresponding path program 45 times [2018-07-25 13:19:59,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 552 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:59,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:59,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:19:59,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:19:59,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:19:59,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:19:59,306 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 50 states. [2018-07-25 13:19:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:59,562 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2018-07-25 13:19:59,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:19:59,563 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 74 [2018-07-25 13:19:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:59,563 INFO L225 Difference]: With dead ends: 127 [2018-07-25 13:19:59,564 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 13:19:59,566 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 13:19:59,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 13:19:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 13:19:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 13:19:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2018-07-25 13:19:59,578 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2018-07-25 13:19:59,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:59,579 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2018-07-25 13:19:59,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:19:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2018-07-25 13:19:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 13:19:59,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:59,580 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1, 1] [2018-07-25 13:19:59,580 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:59,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1997435731, now seen corresponding path program 46 times [2018-07-25 13:19:59,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 300 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:59,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:59,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:19:59,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:19:59,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:19:59,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:19:59,766 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 28 states. [2018-07-25 13:19:59,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:59,864 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2018-07-25 13:19:59,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:19:59,865 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 75 [2018-07-25 13:19:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:59,866 INFO L225 Difference]: With dead ends: 84 [2018-07-25 13:19:59,866 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 13:19:59,867 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:19:59,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 13:19:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2018-07-25 13:19:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 13:19:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2018-07-25 13:19:59,877 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 75 [2018-07-25 13:19:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:59,878 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2018-07-25 13:19:59,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:19:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2018-07-25 13:19:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 13:19:59,878 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:59,879 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 1, 1, 1, 1] [2018-07-25 13:19:59,879 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:59,879 INFO L82 PathProgramCache]: Analyzing trace with hash -314577797, now seen corresponding path program 47 times [2018-07-25 13:19:59,879 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 600 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:00,024 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:00,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:20:00,024 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:20:00,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:20:00,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:20:00,026 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 52 states. [2018-07-25 13:20:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:00,298 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2018-07-25 13:20:00,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:20:00,298 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 77 [2018-07-25 13:20:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:00,299 INFO L225 Difference]: With dead ends: 132 [2018-07-25 13:20:00,299 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 13:20:00,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1401, Invalid=4451, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:20:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 13:20:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 13:20:00,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 13:20:00,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 13:20:00,314 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 77 [2018-07-25 13:20:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:00,314 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 13:20:00,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:20:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 13:20:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 13:20:00,316 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:00,316 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1, 1] [2018-07-25 13:20:00,316 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:00,317 INFO L82 PathProgramCache]: Analyzing trace with hash -546310750, now seen corresponding path program 48 times [2018-07-25 13:20:00,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 325 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:00,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:00,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:20:00,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:20:00,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:20:00,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:20:00,410 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 29 states. [2018-07-25 13:20:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:00,512 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2018-07-25 13:20:00,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:20:00,512 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 78 [2018-07-25 13:20:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:00,513 INFO L225 Difference]: With dead ends: 87 [2018-07-25 13:20:00,513 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 13:20:00,514 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:20:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 13:20:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-07-25 13:20:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 13:20:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 13:20:00,526 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 13:20:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:00,526 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 13:20:00,526 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:20:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 13:20:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 13:20:00,527 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:00,527 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 1, 1, 1, 1] [2018-07-25 13:20:00,528 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1018554614, now seen corresponding path program 49 times [2018-07-25 13:20:00,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 650 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:00,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:00,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:20:00,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:20:00,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:20:00,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:20:00,685 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 54 states. [2018-07-25 13:20:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:00,893 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2018-07-25 13:20:00,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:20:00,894 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 80 [2018-07-25 13:20:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:00,895 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:20:00,895 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 13:20:00,897 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1509, Invalid=4811, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:20:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 13:20:00,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 13:20:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 13:20:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2018-07-25 13:20:00,913 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 80 [2018-07-25 13:20:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:00,913 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2018-07-25 13:20:00,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:20:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2018-07-25 13:20:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 13:20:00,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:00,914 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 1, 1, 1, 1] [2018-07-25 13:20:00,915 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:00,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1732454531, now seen corresponding path program 50 times [2018-07-25 13:20:00,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 351 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:01,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:01,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:20:01,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:20:01,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:20:01,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:20:01,013 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 30 states. [2018-07-25 13:20:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:01,125 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2018-07-25 13:20:01,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:20:01,125 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 81 [2018-07-25 13:20:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:01,126 INFO L225 Difference]: With dead ends: 90 [2018-07-25 13:20:01,126 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 13:20:01,127 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:20:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 13:20:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-07-25 13:20:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 13:20:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2018-07-25 13:20:01,139 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 81 [2018-07-25 13:20:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:01,140 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2018-07-25 13:20:01,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:20:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2018-07-25 13:20:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 13:20:01,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:01,141 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 1, 1, 1, 1] [2018-07-25 13:20:01,141 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1558440533, now seen corresponding path program 51 times [2018-07-25 13:20:01,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 702 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:01,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:01,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:20:01,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:20:01,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:20:01,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:20:01,299 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 56 states. [2018-07-25 13:20:01,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:01,597 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2018-07-25 13:20:01,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:20:01,597 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 83 [2018-07-25 13:20:01,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:01,598 INFO L225 Difference]: With dead ends: 142 [2018-07-25 13:20:01,598 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 13:20:01,599 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1621, Invalid=5185, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:20:01,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 13:20:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 13:20:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 13:20:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 13:20:01,611 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 83 [2018-07-25 13:20:01,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:01,611 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 13:20:01,612 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:20:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 13:20:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 13:20:01,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:01,613 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1, 1] [2018-07-25 13:20:01,613 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:01,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1484023186, now seen corresponding path program 52 times [2018-07-25 13:20:01,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 378 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:01,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:01,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:20:01,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:20:01,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:20:01,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:20:01,728 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 31 states. [2018-07-25 13:20:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:01,837 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 13:20:01,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:20:01,837 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 84 [2018-07-25 13:20:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:01,838 INFO L225 Difference]: With dead ends: 93 [2018-07-25 13:20:01,838 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 13:20:01,839 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:20:01,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 13:20:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-07-25 13:20:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 13:20:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 13:20:01,850 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 13:20:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:01,851 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 13:20:01,851 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:20:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 13:20:01,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 13:20:01,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:01,852 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 1, 1, 1, 1] [2018-07-25 13:20:01,852 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:01,853 INFO L82 PathProgramCache]: Analyzing trace with hash 217205498, now seen corresponding path program 53 times [2018-07-25 13:20:01,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 756 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:02,024 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:02,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:20:02,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:20:02,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:20:02,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:20:02,026 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 58 states. [2018-07-25 13:20:02,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:02,441 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2018-07-25 13:20:02,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:20:02,441 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 86 [2018-07-25 13:20:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:02,442 INFO L225 Difference]: With dead ends: 147 [2018-07-25 13:20:02,442 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 13:20:02,443 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 13:20:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 13:20:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 13:20:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 13:20:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2018-07-25 13:20:02,459 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2018-07-25 13:20:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:02,459 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2018-07-25 13:20:02,459 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:20:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2018-07-25 13:20:02,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 13:20:02,460 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:02,461 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1, 1] [2018-07-25 13:20:02,461 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1559010739, now seen corresponding path program 54 times [2018-07-25 13:20:02,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 406 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:02,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:02,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:20:02,600 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:20:02,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:20:02,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:20:02,601 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 32 states. [2018-07-25 13:20:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:02,738 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2018-07-25 13:20:02,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:20:02,738 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 87 [2018-07-25 13:20:02,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:02,739 INFO L225 Difference]: With dead ends: 96 [2018-07-25 13:20:02,740 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 13:20:02,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:20:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 13:20:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2018-07-25 13:20:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 13:20:02,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2018-07-25 13:20:02,755 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 87 [2018-07-25 13:20:02,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:02,756 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2018-07-25 13:20:02,756 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:20:02,756 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2018-07-25 13:20:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 13:20:02,757 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:02,757 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 1, 1, 1, 1] [2018-07-25 13:20:02,757 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:02,758 INFO L82 PathProgramCache]: Analyzing trace with hash -734200101, now seen corresponding path program 55 times [2018-07-25 13:20:02,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 812 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:02,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:02,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:20:02,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:20:02,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:20:02,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:20:02,983 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 60 states. [2018-07-25 13:20:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:03,325 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-25 13:20:03,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:20:03,325 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 89 [2018-07-25 13:20:03,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:03,326 INFO L225 Difference]: With dead ends: 152 [2018-07-25 13:20:03,326 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 13:20:03,327 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 13:20:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 13:20:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 13:20:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 13:20:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 13:20:03,339 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 89 [2018-07-25 13:20:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:03,340 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 13:20:03,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:20:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 13:20:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 13:20:03,340 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:03,341 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 1, 1, 1, 1] [2018-07-25 13:20:03,341 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:03,341 INFO L82 PathProgramCache]: Analyzing trace with hash -274889342, now seen corresponding path program 56 times [2018-07-25 13:20:03,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:03,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:03,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:20:03,448 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:20:03,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:20:03,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:20:03,449 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 33 states. [2018-07-25 13:20:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:03,557 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2018-07-25 13:20:03,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:20:03,557 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 90 [2018-07-25 13:20:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:03,558 INFO L225 Difference]: With dead ends: 99 [2018-07-25 13:20:03,558 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 13:20:03,559 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:20:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 13:20:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2018-07-25 13:20:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 13:20:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 13:20:03,571 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 13:20:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:03,571 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 13:20:03,571 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:20:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 13:20:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 13:20:03,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:03,572 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 1, 1, 1, 1] [2018-07-25 13:20:03,572 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:03,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2119380714, now seen corresponding path program 57 times [2018-07-25 13:20:03,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 870 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:03,740 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:03,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:20:03,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:20:03,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:20:03,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:20:03,742 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 62 states. [2018-07-25 13:20:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:04,095 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2018-07-25 13:20:04,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:20:04,095 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 92 [2018-07-25 13:20:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:04,096 INFO L225 Difference]: With dead ends: 157 [2018-07-25 13:20:04,096 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 13:20:04,097 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1981, Invalid=6391, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:20:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 13:20:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 13:20:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 13:20:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2018-07-25 13:20:04,110 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 92 [2018-07-25 13:20:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:04,110 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2018-07-25 13:20:04,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:20:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2018-07-25 13:20:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 13:20:04,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:04,111 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1, 1] [2018-07-25 13:20:04,112 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:04,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1680397027, now seen corresponding path program 58 times [2018-07-25 13:20:04,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 465 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:04,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:04,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:20:04,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:20:04,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:20:04,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:20:04,221 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 34 states. [2018-07-25 13:20:04,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:04,339 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2018-07-25 13:20:04,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:20:04,339 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 93 [2018-07-25 13:20:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:04,340 INFO L225 Difference]: With dead ends: 102 [2018-07-25 13:20:04,340 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 13:20:04,341 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:20:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 13:20:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2018-07-25 13:20:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 13:20:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2018-07-25 13:20:04,355 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 93 [2018-07-25 13:20:04,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:04,355 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2018-07-25 13:20:04,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:20:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2018-07-25 13:20:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 13:20:04,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:04,357 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1] [2018-07-25 13:20:04,357 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:04,357 INFO L82 PathProgramCache]: Analyzing trace with hash -46094325, now seen corresponding path program 59 times [2018-07-25 13:20:04,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 930 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:04,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:04,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:20:04,541 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:20:04,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:20:04,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:20:04,543 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 64 states. [2018-07-25 13:20:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:04,907 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2018-07-25 13:20:04,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:20:04,908 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 95 [2018-07-25 13:20:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:04,908 INFO L225 Difference]: With dead ends: 162 [2018-07-25 13:20:04,909 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 13:20:04,910 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 13:20:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 13:20:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 13:20:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 13:20:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 13:20:04,925 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 95 [2018-07-25 13:20:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:04,926 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 13:20:04,926 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:20:04,926 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 13:20:04,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 13:20:04,927 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:04,927 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1, 1] [2018-07-25 13:20:04,927 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash 366302578, now seen corresponding path program 60 times [2018-07-25 13:20:04,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 496 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:05,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:05,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:20:05,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:20:05,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:20:05,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:20:05,045 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 35 states. [2018-07-25 13:20:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:05,173 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 13:20:05,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:20:05,174 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 96 [2018-07-25 13:20:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:05,175 INFO L225 Difference]: With dead ends: 105 [2018-07-25 13:20:05,175 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 13:20:05,176 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:20:05,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 13:20:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-07-25 13:20:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 13:20:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 13:20:05,191 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 13:20:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:05,191 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 13:20:05,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:20:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 13:20:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 13:20:05,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:05,193 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 1, 1, 1, 1] [2018-07-25 13:20:05,193 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:05,193 INFO L82 PathProgramCache]: Analyzing trace with hash -170474790, now seen corresponding path program 61 times [2018-07-25 13:20:05,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 992 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:05,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:05,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:20:05,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:20:05,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:20:05,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:20:05,389 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 66 states. [2018-07-25 13:20:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:05,836 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2018-07-25 13:20:05,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:20:05,836 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 98 [2018-07-25 13:20:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:05,837 INFO L225 Difference]: With dead ends: 167 [2018-07-25 13:20:05,837 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 13:20:05,838 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2241, Invalid=7265, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:20:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 13:20:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 13:20:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 13:20:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2018-07-25 13:20:05,853 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2018-07-25 13:20:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:05,853 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2018-07-25 13:20:05,853 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:20:05,853 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2018-07-25 13:20:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 13:20:05,854 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:05,854 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1, 1] [2018-07-25 13:20:05,855 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:05,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1939195923, now seen corresponding path program 62 times [2018-07-25 13:20:05,855 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 528 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:05,979 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:05,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:20:05,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:20:05,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:20:05,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:20:05,980 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 36 states. [2018-07-25 13:20:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:06,116 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2018-07-25 13:20:06,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:20:06,117 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 99 [2018-07-25 13:20:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:06,118 INFO L225 Difference]: With dead ends: 108 [2018-07-25 13:20:06,118 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 13:20:06,119 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:20:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 13:20:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2018-07-25 13:20:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 13:20:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2018-07-25 13:20:06,135 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 99 [2018-07-25 13:20:06,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:06,136 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2018-07-25 13:20:06,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:20:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2018-07-25 13:20:06,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 13:20:06,139 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:06,139 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 1, 1, 1, 1] [2018-07-25 13:20:06,139 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:06,139 INFO L82 PathProgramCache]: Analyzing trace with hash -448458437, now seen corresponding path program 63 times [2018-07-25 13:20:06,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 1056 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:06,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:06,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:20:06,320 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:20:06,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:20:06,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:20:06,321 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 68 states. [2018-07-25 13:20:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:06,716 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2018-07-25 13:20:06,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:20:06,716 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 101 [2018-07-25 13:20:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:06,717 INFO L225 Difference]: With dead ends: 172 [2018-07-25 13:20:06,717 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 13:20:06,719 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 13:20:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 13:20:06,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 13:20:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 13:20:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 13:20:06,732 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 101 [2018-07-25 13:20:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:06,733 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 13:20:06,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:20:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 13:20:06,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 13:20:06,734 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:06,734 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1, 1] [2018-07-25 13:20:06,734 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash 495310178, now seen corresponding path program 64 times [2018-07-25 13:20:06,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:06,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:06,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:20:06,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:20:06,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:20:06,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:20:06,850 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 37 states. [2018-07-25 13:20:06,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:06,972 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2018-07-25 13:20:06,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:20:06,973 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 102 [2018-07-25 13:20:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:06,974 INFO L225 Difference]: With dead ends: 111 [2018-07-25 13:20:06,974 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 13:20:06,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:20:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 13:20:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2018-07-25 13:20:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 13:20:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 13:20:06,989 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 13:20:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:06,989 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 13:20:06,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:20:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 13:20:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 13:20:06,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:06,991 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 1, 1, 1, 1] [2018-07-25 13:20:06,991 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:06,991 INFO L82 PathProgramCache]: Analyzing trace with hash -748222774, now seen corresponding path program 65 times [2018-07-25 13:20:06,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1122 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:07,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:07,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:20:07,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:20:07,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:20:07,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:20:07,195 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 70 states. [2018-07-25 13:20:07,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:07,626 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2018-07-25 13:20:07,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:20:07,626 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 104 [2018-07-25 13:20:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:07,627 INFO L225 Difference]: With dead ends: 177 [2018-07-25 13:20:07,627 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 13:20:07,629 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 13:20:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 13:20:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 13:20:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 13:20:07,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2018-07-25 13:20:07,641 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 104 [2018-07-25 13:20:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:07,641 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2018-07-25 13:20:07,641 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:20:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2018-07-25 13:20:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 13:20:07,642 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:07,643 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1, 1] [2018-07-25 13:20:07,643 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:07,643 INFO L82 PathProgramCache]: Analyzing trace with hash 206667075, now seen corresponding path program 66 times [2018-07-25 13:20:07,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 595 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:07,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:07,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:20:07,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:20:07,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:20:07,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:20:07,773 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 38 states. [2018-07-25 13:20:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:07,904 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2018-07-25 13:20:07,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:20:07,904 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 105 [2018-07-25 13:20:07,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:07,905 INFO L225 Difference]: With dead ends: 114 [2018-07-25 13:20:07,906 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 13:20:07,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:20:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 13:20:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2018-07-25 13:20:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 13:20:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2018-07-25 13:20:07,920 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 105 [2018-07-25 13:20:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:07,920 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2018-07-25 13:20:07,920 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:20:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2018-07-25 13:20:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 13:20:07,921 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:07,922 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 1, 1, 1, 1] [2018-07-25 13:20:07,922 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1038629483, now seen corresponding path program 67 times [2018-07-25 13:20:07,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 1190 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:08,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:08,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:20:08,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:20:08,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:20:08,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:20:08,119 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 72 states. [2018-07-25 13:20:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:08,598 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-25 13:20:08,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:20:08,598 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 107 [2018-07-25 13:20:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:08,599 INFO L225 Difference]: With dead ends: 182 [2018-07-25 13:20:08,600 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 13:20:08,601 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 13:20:08,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 13:20:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 13:20:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 13:20:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 13:20:08,616 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 107 [2018-07-25 13:20:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:08,616 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 13:20:08,616 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:20:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 13:20:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 13:20:08,617 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:08,618 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 1, 1, 1, 1] [2018-07-25 13:20:08,618 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:08,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1701247662, now seen corresponding path program 68 times [2018-07-25 13:20:08,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 630 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:08,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:08,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:20:08,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:20:08,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:20:08,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:20:08,804 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 39 states. [2018-07-25 13:20:08,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:08,971 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 13:20:08,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:20:08,971 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 108 [2018-07-25 13:20:08,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:08,972 INFO L225 Difference]: With dead ends: 117 [2018-07-25 13:20:08,972 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 13:20:08,973 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:20:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 13:20:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-07-25 13:20:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 13:20:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 13:20:09,050 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 13:20:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:09,051 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 13:20:09,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:20:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 13:20:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 13:20:09,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:09,053 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 1, 1, 1, 1] [2018-07-25 13:20:09,055 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1483602618, now seen corresponding path program 69 times [2018-07-25 13:20:09,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1260 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:09,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:09,269 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:20:09,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:20:09,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:20:09,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:20:09,271 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 74 states. [2018-07-25 13:20:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:09,735 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-25 13:20:09,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:20:09,735 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 110 [2018-07-25 13:20:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:09,736 INFO L225 Difference]: With dead ends: 187 [2018-07-25 13:20:09,736 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 13:20:09,738 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2809, Invalid=9181, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:20:09,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 13:20:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 13:20:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 13:20:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2018-07-25 13:20:09,753 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2018-07-25 13:20:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:09,753 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2018-07-25 13:20:09,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:20:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2018-07-25 13:20:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 13:20:09,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:09,754 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 1, 1, 1, 1] [2018-07-25 13:20:09,755 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash -637930893, now seen corresponding path program 70 times [2018-07-25 13:20:09,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 666 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:09,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:09,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:20:09,902 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:20:09,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:20:09,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:20:09,904 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 40 states. [2018-07-25 13:20:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:10,043 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2018-07-25 13:20:10,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:20:10,043 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 111 [2018-07-25 13:20:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:10,044 INFO L225 Difference]: With dead ends: 120 [2018-07-25 13:20:10,044 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 13:20:10,045 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:20:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 13:20:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-07-25 13:20:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 13:20:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2018-07-25 13:20:10,064 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 111 [2018-07-25 13:20:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:10,065 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2018-07-25 13:20:10,065 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:20:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2018-07-25 13:20:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 13:20:10,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:10,066 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 1, 1, 1, 1] [2018-07-25 13:20:10,066 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:10,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1128801179, now seen corresponding path program 71 times [2018-07-25 13:20:10,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 1332 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:10,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:10,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:20:10,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:20:10,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:20:10,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:20:10,268 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 76 states. [2018-07-25 13:20:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:10,527 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2018-07-25 13:20:10,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:20:10,528 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 113 [2018-07-25 13:20:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:10,529 INFO L225 Difference]: With dead ends: 192 [2018-07-25 13:20:10,529 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 13:20:10,530 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2961, Invalid=9695, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:20:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 13:20:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 13:20:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 13:20:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 13:20:10,544 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 113 [2018-07-25 13:20:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:10,544 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 13:20:10,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:20:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 13:20:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 13:20:10,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:10,546 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1, 1] [2018-07-25 13:20:10,546 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:10,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1032264382, now seen corresponding path program 72 times [2018-07-25 13:20:10,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:10,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:10,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:20:10,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:20:10,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:20:10,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:20:10,684 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 41 states. [2018-07-25 13:20:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:10,828 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2018-07-25 13:20:10,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:20:10,829 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 114 [2018-07-25 13:20:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:10,830 INFO L225 Difference]: With dead ends: 123 [2018-07-25 13:20:10,830 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 13:20:10,831 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:20:10,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 13:20:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2018-07-25 13:20:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 13:20:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 13:20:10,846 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 13:20:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:10,847 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 13:20:10,847 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:20:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 13:20:10,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 13:20:10,848 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:10,848 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 1, 1, 1, 1] [2018-07-25 13:20:10,848 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:10,849 INFO L82 PathProgramCache]: Analyzing trace with hash 131440298, now seen corresponding path program 73 times [2018-07-25 13:20:10,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2109 backedges. 1406 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:11,092 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:11,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:20:11,092 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:20:11,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:20:11,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:20:11,094 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 78 states. [2018-07-25 13:20:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:11,632 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2018-07-25 13:20:11,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:20:11,632 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 116 [2018-07-25 13:20:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:11,633 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:20:11,633 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 13:20:11,635 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3117, Invalid=10223, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:20:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 13:20:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 13:20:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 13:20:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2018-07-25 13:20:11,653 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 116 [2018-07-25 13:20:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:11,653 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2018-07-25 13:20:11,654 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:20:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2018-07-25 13:20:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 13:20:11,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:11,655 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 1, 1, 1, 1] [2018-07-25 13:20:11,656 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:11,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1387079587, now seen corresponding path program 74 times [2018-07-25 13:20:11,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 741 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:11,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:11,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:20:11,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:20:11,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:20:11,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:20:11,808 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 42 states. [2018-07-25 13:20:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:11,960 INFO L93 Difference]: Finished difference Result 126 states and 127 transitions. [2018-07-25 13:20:11,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:20:11,960 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 117 [2018-07-25 13:20:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:11,961 INFO L225 Difference]: With dead ends: 126 [2018-07-25 13:20:11,961 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 13:20:11,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:20:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 13:20:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2018-07-25 13:20:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 13:20:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2018-07-25 13:20:11,976 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 117 [2018-07-25 13:20:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:11,977 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2018-07-25 13:20:11,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:20:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2018-07-25 13:20:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 13:20:11,978 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:11,980 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 1, 1, 1, 1] [2018-07-25 13:20:11,981 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:11,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1543687371, now seen corresponding path program 75 times [2018-07-25 13:20:11,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 1482 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:12,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:12,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:20:12,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:20:12,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:20:12,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:20:12,245 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand 80 states. [2018-07-25 13:20:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:12,761 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2018-07-25 13:20:12,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:20:12,762 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 119 [2018-07-25 13:20:12,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:12,763 INFO L225 Difference]: With dead ends: 202 [2018-07-25 13:20:12,763 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 13:20:12,765 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 13:20:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 13:20:12,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 13:20:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 13:20:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 13:20:12,779 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 119 [2018-07-25 13:20:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:12,779 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 13:20:12,779 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:20:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 13:20:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 13:20:12,780 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:12,780 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1, 1] [2018-07-25 13:20:12,781 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:12,781 INFO L82 PathProgramCache]: Analyzing trace with hash -871402190, now seen corresponding path program 76 times [2018-07-25 13:20:12,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 780 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:12,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:12,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:20:12,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:20:12,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:20:12,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:20:12,926 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 43 states. [2018-07-25 13:20:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:13,059 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 13:20:13,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:20:13,060 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 120 [2018-07-25 13:20:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:13,061 INFO L225 Difference]: With dead ends: 129 [2018-07-25 13:20:13,061 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 13:20:13,062 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:20:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 13:20:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2018-07-25 13:20:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 13:20:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 13:20:13,077 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 13:20:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:13,078 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 13:20:13,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:20:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 13:20:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 13:20:13,079 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:13,079 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 1, 1, 1, 1] [2018-07-25 13:20:13,079 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:13,080 INFO L82 PathProgramCache]: Analyzing trace with hash 101184154, now seen corresponding path program 77 times [2018-07-25 13:20:13,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 1560 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:13,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:13,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:20:13,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:20:13,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:20:13,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:20:13,308 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 82 states. [2018-07-25 13:20:13,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:13,894 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2018-07-25 13:20:13,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:20:13,894 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 122 [2018-07-25 13:20:13,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:13,895 INFO L225 Difference]: With dead ends: 207 [2018-07-25 13:20:13,895 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 13:20:13,897 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 13:20:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 13:20:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 13:20:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 13:20:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2018-07-25 13:20:13,913 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2018-07-25 13:20:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:13,913 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2018-07-25 13:20:13,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:20:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2018-07-25 13:20:13,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 13:20:13,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:13,915 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1, 1] [2018-07-25 13:20:13,915 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:13,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1460214995, now seen corresponding path program 78 times [2018-07-25 13:20:13,916 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 820 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:14,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:14,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:20:14,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:20:14,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:20:14,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:20:14,085 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 44 states. [2018-07-25 13:20:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:14,237 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2018-07-25 13:20:14,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:20:14,237 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 123 [2018-07-25 13:20:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:14,238 INFO L225 Difference]: With dead ends: 132 [2018-07-25 13:20:14,239 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 13:20:14,239 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:20:14,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 13:20:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2018-07-25 13:20:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 13:20:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2018-07-25 13:20:14,254 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 123 [2018-07-25 13:20:14,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:14,255 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2018-07-25 13:20:14,255 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:20:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2018-07-25 13:20:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 13:20:14,256 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:14,256 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 1, 1, 1, 1] [2018-07-25 13:20:14,257 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:14,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1187629573, now seen corresponding path program 79 times [2018-07-25 13:20:14,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1640 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:14,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:14,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:20:14,499 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:20:14,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:20:14,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:20:14,500 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 84 states. [2018-07-25 13:20:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:15,083 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-25 13:20:15,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:20:15,083 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 125 [2018-07-25 13:20:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:15,084 INFO L225 Difference]: With dead ends: 212 [2018-07-25 13:20:15,085 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 13:20:15,090 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 13:20:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 13:20:15,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 13:20:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 13:20:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 13:20:15,109 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 125 [2018-07-25 13:20:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:15,110 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 13:20:15,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:20:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 13:20:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 13:20:15,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:15,111 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1, 1] [2018-07-25 13:20:15,112 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:15,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1338422562, now seen corresponding path program 80 times [2018-07-25 13:20:15,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 861 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:15,313 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:15,313 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:20:15,314 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:20:15,314 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:20:15,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:20:15,315 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 45 states. [2018-07-25 13:20:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:15,489 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2018-07-25 13:20:15,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:20:15,489 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 126 [2018-07-25 13:20:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:15,490 INFO L225 Difference]: With dead ends: 135 [2018-07-25 13:20:15,490 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 13:20:15,491 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:20:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 13:20:15,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-07-25 13:20:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 13:20:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 13:20:15,511 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 13:20:15,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:15,511 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 13:20:15,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:20:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 13:20:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 13:20:15,513 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:15,513 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 1, 1, 1, 1] [2018-07-25 13:20:15,513 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2028926602, now seen corresponding path program 81 times [2018-07-25 13:20:15,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 1722 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:15,873 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:15,873 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:20:15,874 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:20:15,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:20:15,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:20:15,874 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 86 states. [2018-07-25 13:20:16,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:16,449 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2018-07-25 13:20:16,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:20:16,450 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 128 [2018-07-25 13:20:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:16,451 INFO L225 Difference]: With dead ends: 217 [2018-07-25 13:20:16,451 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 13:20:16,452 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3781, Invalid=12475, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:20:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 13:20:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 13:20:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 13:20:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2018-07-25 13:20:16,469 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 128 [2018-07-25 13:20:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:16,469 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2018-07-25 13:20:16,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:20:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2018-07-25 13:20:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 13:20:16,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:16,470 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 1, 1, 1, 1] [2018-07-25 13:20:16,470 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash -768880125, now seen corresponding path program 82 times [2018-07-25 13:20:16,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 903 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:16,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:16,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:20:16,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:20:16,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:20:16,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:20:16,634 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 46 states. [2018-07-25 13:20:16,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:16,786 INFO L93 Difference]: Finished difference Result 138 states and 139 transitions. [2018-07-25 13:20:16,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:20:16,786 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 129 [2018-07-25 13:20:16,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:16,787 INFO L225 Difference]: With dead ends: 138 [2018-07-25 13:20:16,787 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 13:20:16,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1806 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:20:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 13:20:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2018-07-25 13:20:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 13:20:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2018-07-25 13:20:16,803 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 129 [2018-07-25 13:20:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:16,804 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2018-07-25 13:20:16,804 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:20:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2018-07-25 13:20:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 13:20:16,805 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:16,805 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 1, 1, 1, 1] [2018-07-25 13:20:16,805 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:16,805 INFO L82 PathProgramCache]: Analyzing trace with hash -159359189, now seen corresponding path program 83 times [2018-07-25 13:20:16,805 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 1806 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:17,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:17,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:20:17,023 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:20:17,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:20:17,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:20:17,024 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand 88 states. [2018-07-25 13:20:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:17,224 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2018-07-25 13:20:17,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:20:17,224 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 131 [2018-07-25 13:20:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:17,225 INFO L225 Difference]: With dead ends: 222 [2018-07-25 13:20:17,225 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 13:20:17,227 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 13:20:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 13:20:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 13:20:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 13:20:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 13:20:17,246 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 131 [2018-07-25 13:20:17,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:17,246 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 13:20:17,246 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:20:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 13:20:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 13:20:17,247 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:17,247 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1, 1] [2018-07-25 13:20:17,247 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:17,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1484217070, now seen corresponding path program 84 times [2018-07-25 13:20:17,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 946 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:17,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:17,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:20:17,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:20:17,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:20:17,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:20:17,414 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 47 states. [2018-07-25 13:20:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:17,579 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 13:20:17,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:20:17,580 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 132 [2018-07-25 13:20:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:17,581 INFO L225 Difference]: With dead ends: 141 [2018-07-25 13:20:17,581 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 13:20:17,582 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:20:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 13:20:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-07-25 13:20:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 13:20:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 13:20:17,600 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 13:20:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:17,600 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 13:20:17,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:20:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 13:20:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 13:20:17,601 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:17,601 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 1, 1, 1, 1] [2018-07-25 13:20:17,601 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:17,602 INFO L82 PathProgramCache]: Analyzing trace with hash -403395974, now seen corresponding path program 85 times [2018-07-25 13:20:17,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 1892 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:17,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:17,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:20:17,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:20:17,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:20:17,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:20:17,878 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 90 states. [2018-07-25 13:20:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:18,461 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2018-07-25 13:20:18,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:20:18,461 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 134 [2018-07-25 13:20:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:18,462 INFO L225 Difference]: With dead ends: 227 [2018-07-25 13:20:18,462 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 13:20:18,464 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4137, Invalid=13685, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:20:18,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 13:20:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 13:20:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 13:20:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2018-07-25 13:20:18,480 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2018-07-25 13:20:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:18,480 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2018-07-25 13:20:18,480 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:20:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2018-07-25 13:20:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 13:20:18,481 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:18,481 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 1, 1, 1, 1] [2018-07-25 13:20:18,482 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:18,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1504921395, now seen corresponding path program 86 times [2018-07-25 13:20:18,482 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 990 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:18,646 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:18,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:20:18,646 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:20:18,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:20:18,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:20:18,647 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 48 states. [2018-07-25 13:20:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:18,806 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2018-07-25 13:20:18,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:20:18,806 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 135 [2018-07-25 13:20:18,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:18,807 INFO L225 Difference]: With dead ends: 144 [2018-07-25 13:20:18,808 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 13:20:18,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1980 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:20:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 13:20:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2018-07-25 13:20:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 13:20:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2018-07-25 13:20:18,832 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 135 [2018-07-25 13:20:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:18,832 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2018-07-25 13:20:18,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:20:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2018-07-25 13:20:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 13:20:18,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:18,833 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 1, 1, 1, 1] [2018-07-25 13:20:18,833 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:18,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1174452133, now seen corresponding path program 87 times [2018-07-25 13:20:18,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 1980 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:19,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:19,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:20:19,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:20:19,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:20:19,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:20:19,169 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 92 states. [2018-07-25 13:20:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:19,731 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2018-07-25 13:20:19,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:20:19,731 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 137 [2018-07-25 13:20:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:19,732 INFO L225 Difference]: With dead ends: 232 [2018-07-25 13:20:19,732 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 13:20:19,733 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4321, Invalid=14311, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:20:19,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 13:20:19,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 13:20:19,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 13:20:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 13:20:19,751 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 137 [2018-07-25 13:20:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:19,751 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 13:20:19,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:20:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 13:20:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 13:20:19,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:19,752 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 1, 1, 1, 1] [2018-07-25 13:20:19,753 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1321157890, now seen corresponding path program 88 times [2018-07-25 13:20:19,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 1035 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:19,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:19,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:20:19,903 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:20:19,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:20:19,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:20:19,904 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 49 states. [2018-07-25 13:20:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:20,019 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2018-07-25 13:20:20,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:20:20,019 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 138 [2018-07-25 13:20:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:20,020 INFO L225 Difference]: With dead ends: 147 [2018-07-25 13:20:20,020 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 13:20:20,023 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:20:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 13:20:20,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2018-07-25 13:20:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 13:20:20,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 13:20:20,039 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 13:20:20,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:20,039 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 13:20:20,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:20:20,040 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 13:20:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 13:20:20,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:20,040 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 1, 1, 1, 1] [2018-07-25 13:20:20,040 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:20,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1677521302, now seen corresponding path program 89 times [2018-07-25 13:20:20,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 2070 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:20,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:20,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:20:20,242 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:20:20,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:20:20,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:20:20,243 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 94 states. [2018-07-25 13:20:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:20,818 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2018-07-25 13:20:20,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:20:20,819 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 140 [2018-07-25 13:20:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:20,819 INFO L225 Difference]: With dead ends: 237 [2018-07-25 13:20:20,820 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 13:20:20,821 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 13:20:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 13:20:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 13:20:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 13:20:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2018-07-25 13:20:20,835 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 140 [2018-07-25 13:20:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:20,835 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2018-07-25 13:20:20,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:20:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2018-07-25 13:20:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 13:20:20,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:20,836 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 1, 1, 1, 1] [2018-07-25 13:20:20,836 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:20,836 INFO L82 PathProgramCache]: Analyzing trace with hash -843219869, now seen corresponding path program 90 times [2018-07-25 13:20:20,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 1081 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:20,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:20,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:20:20,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:20:20,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:20:20,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:20:20,982 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 50 states. [2018-07-25 13:20:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:21,090 INFO L93 Difference]: Finished difference Result 150 states and 151 transitions. [2018-07-25 13:20:21,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:20:21,090 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 141 [2018-07-25 13:20:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:21,091 INFO L225 Difference]: With dead ends: 150 [2018-07-25 13:20:21,091 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 13:20:21,092 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:20:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 13:20:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-07-25 13:20:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 13:20:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2018-07-25 13:20:21,104 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 141 [2018-07-25 13:20:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:21,105 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2018-07-25 13:20:21,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:20:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2018-07-25 13:20:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 13:20:21,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:21,106 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1] [2018-07-25 13:20:21,106 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:21,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1414590859, now seen corresponding path program 91 times [2018-07-25 13:20:21,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 2162 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:21,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:21,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:20:21,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:20:21,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:20:21,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:20:21,302 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 96 states. [2018-07-25 13:20:21,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:21,776 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-25 13:20:21,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:20:21,776 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 143 [2018-07-25 13:20:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:21,777 INFO L225 Difference]: With dead ends: 242 [2018-07-25 13:20:21,777 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 13:20:21,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4701, Invalid=15605, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:20:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 13:20:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 13:20:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 13:20:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 13:20:21,794 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 143 [2018-07-25 13:20:21,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:21,795 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 13:20:21,795 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:20:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 13:20:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 13:20:21,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:21,795 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1, 1] [2018-07-25 13:20:21,795 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:21,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1112839410, now seen corresponding path program 92 times [2018-07-25 13:20:21,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 1128 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:21,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:21,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:20:21,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:20:21,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:20:21,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:20:21,949 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 51 states. [2018-07-25 13:20:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:22,154 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 13:20:22,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:20:22,155 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 144 [2018-07-25 13:20:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:22,156 INFO L225 Difference]: With dead ends: 153 [2018-07-25 13:20:22,156 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 13:20:22,157 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:20:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 13:20:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2018-07-25 13:20:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 13:20:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 13:20:22,176 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 13:20:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:22,176 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 13:20:22,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:20:22,177 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 13:20:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 13:20:22,177 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:22,177 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 1, 1, 1, 1] [2018-07-25 13:20:22,178 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash -8117670, now seen corresponding path program 93 times [2018-07-25 13:20:22,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3384 backedges. 2256 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:22,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:22,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:20:22,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:20:22,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:20:22,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:20:22,440 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 98 states. [2018-07-25 13:20:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:22,750 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2018-07-25 13:20:22,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:20:22,750 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 146 [2018-07-25 13:20:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:22,751 INFO L225 Difference]: With dead ends: 247 [2018-07-25 13:20:22,751 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 13:20:22,752 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4897, Invalid=16273, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:20:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 13:20:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 13:20:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 13:20:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2018-07-25 13:20:22,763 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 146 [2018-07-25 13:20:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:22,764 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2018-07-25 13:20:22,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:20:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2018-07-25 13:20:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 13:20:22,765 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:22,765 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 1, 1, 1, 1] [2018-07-25 13:20:22,765 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash -118984301, now seen corresponding path program 94 times [2018-07-25 13:20:22,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 1176 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:22,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:22,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:20:22,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:20:22,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:20:22,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:20:22,904 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 52 states. [2018-07-25 13:20:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:23,061 INFO L93 Difference]: Finished difference Result 156 states and 157 transitions. [2018-07-25 13:20:23,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:20:23,061 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 147 [2018-07-25 13:20:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:23,062 INFO L225 Difference]: With dead ends: 156 [2018-07-25 13:20:23,062 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 13:20:23,063 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:20:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 13:20:23,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2018-07-25 13:20:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 13:20:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2018-07-25 13:20:23,078 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 147 [2018-07-25 13:20:23,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:23,079 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2018-07-25 13:20:23,079 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:20:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2018-07-25 13:20:23,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 13:20:23,079 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:23,080 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 1, 1, 1, 1] [2018-07-25 13:20:23,080 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1620269755, now seen corresponding path program 95 times [2018-07-25 13:20:23,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 2352 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:23,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:23,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:20:23,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:20:23,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:20:23,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:20:23,280 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 100 states. [2018-07-25 13:20:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:23,900 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2018-07-25 13:20:23,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:20:23,900 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 149 [2018-07-25 13:20:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:23,901 INFO L225 Difference]: With dead ends: 252 [2018-07-25 13:20:23,901 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 13:20:23,902 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5097, Invalid=16955, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:20:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 13:20:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 13:20:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 13:20:23,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 13:20:23,918 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 149 [2018-07-25 13:20:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:23,918 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 13:20:23,918 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:20:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 13:20:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 13:20:23,919 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:23,919 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 1, 1, 1, 1] [2018-07-25 13:20:23,919 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:23,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1622316258, now seen corresponding path program 96 times [2018-07-25 13:20:23,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 1225 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:24,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:24,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:20:24,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:20:24,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:20:24,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:20:24,064 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 53 states. [2018-07-25 13:20:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:24,188 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2018-07-25 13:20:24,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:20:24,188 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 150 [2018-07-25 13:20:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:24,189 INFO L225 Difference]: With dead ends: 159 [2018-07-25 13:20:24,190 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 13:20:24,190 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:20:24,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 13:20:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2018-07-25 13:20:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 13:20:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 13:20:24,207 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 13:20:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:24,207 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 13:20:24,207 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:20:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 13:20:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 13:20:24,208 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:24,208 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 1, 1, 1, 1] [2018-07-25 13:20:24,208 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:24,208 INFO L82 PathProgramCache]: Analyzing trace with hash -27138486, now seen corresponding path program 97 times [2018-07-25 13:20:24,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 2450 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:24,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:24,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:20:24,456 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:20:24,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:20:24,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:20:24,457 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 102 states. [2018-07-25 13:20:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:25,145 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2018-07-25 13:20:25,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:20:25,145 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 152 [2018-07-25 13:20:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:25,146 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:20:25,146 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 13:20:25,148 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5301, Invalid=17651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:20:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 13:20:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 13:20:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 13:20:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2018-07-25 13:20:25,167 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 152 [2018-07-25 13:20:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:25,168 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2018-07-25 13:20:25,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:20:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2018-07-25 13:20:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 13:20:25,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:25,169 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 1, 1, 1, 1] [2018-07-25 13:20:25,169 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:25,169 INFO L82 PathProgramCache]: Analyzing trace with hash 810690243, now seen corresponding path program 98 times [2018-07-25 13:20:25,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 1275 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:25,363 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:25,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:20:25,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:20:25,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:20:25,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:20:25,364 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 54 states. [2018-07-25 13:20:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:25,500 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2018-07-25 13:20:25,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:20:25,500 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 153 [2018-07-25 13:20:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:25,501 INFO L225 Difference]: With dead ends: 162 [2018-07-25 13:20:25,501 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 13:20:25,502 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:20:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 13:20:25,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2018-07-25 13:20:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 13:20:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2018-07-25 13:20:25,523 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 153 [2018-07-25 13:20:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:25,524 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2018-07-25 13:20:25,524 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:20:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2018-07-25 13:20:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 13:20:25,525 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:25,525 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 1, 1, 1, 1] [2018-07-25 13:20:25,525 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:25,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1684308971, now seen corresponding path program 99 times [2018-07-25 13:20:25,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3825 backedges. 2550 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:25,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:25,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:20:25,826 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:20:25,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:20:25,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:20:25,828 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 104 states. [2018-07-25 13:20:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:26,505 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2018-07-25 13:20:26,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:20:26,505 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 155 [2018-07-25 13:20:26,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:26,506 INFO L225 Difference]: With dead ends: 262 [2018-07-25 13:20:26,506 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 13:20:26,508 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 13:20:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 13:20:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 13:20:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 13:20:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 13:20:26,528 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 155 [2018-07-25 13:20:26,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:26,528 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 13:20:26,529 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:20:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 13:20:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 13:20:26,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:26,530 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 1, 1, 1, 1] [2018-07-25 13:20:26,530 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:26,530 INFO L82 PathProgramCache]: Analyzing trace with hash -909949742, now seen corresponding path program 100 times [2018-07-25 13:20:26,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 1326 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:26,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:26,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:20:26,710 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:20:26,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:20:26,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:20:26,711 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 55 states. [2018-07-25 13:20:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:26,863 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 13:20:26,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:20:26,863 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 156 [2018-07-25 13:20:26,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:26,864 INFO L225 Difference]: With dead ends: 165 [2018-07-25 13:20:26,864 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 13:20:26,865 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2652 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:20:26,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 13:20:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-07-25 13:20:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 13:20:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 13:20:26,884 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 13:20:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:26,884 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 13:20:26,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:20:26,884 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 13:20:26,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 13:20:26,885 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:26,885 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 1, 1, 1, 1] [2018-07-25 13:20:26,886 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:26,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1711692346, now seen corresponding path program 101 times [2018-07-25 13:20:26,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3978 backedges. 2652 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:27,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:27,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:20:27,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:20:27,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:20:27,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:20:27,156 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 106 states. [2018-07-25 13:20:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:27,894 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2018-07-25 13:20:27,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:20:27,894 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 158 [2018-07-25 13:20:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:27,895 INFO L225 Difference]: With dead ends: 267 [2018-07-25 13:20:27,895 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 13:20:27,897 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5721, Invalid=19085, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:20:27,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 13:20:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 13:20:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 13:20:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2018-07-25 13:20:27,914 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 158 [2018-07-25 13:20:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:27,914 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2018-07-25 13:20:27,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:20:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2018-07-25 13:20:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 13:20:27,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:27,915 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 1, 1, 1, 1] [2018-07-25 13:20:27,915 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:27,915 INFO L82 PathProgramCache]: Analyzing trace with hash -208102413, now seen corresponding path program 102 times [2018-07-25 13:20:27,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 1378 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:28,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:28,083 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:20:28,083 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:20:28,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:20:28,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:20:28,084 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand 56 states. [2018-07-25 13:20:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:28,233 INFO L93 Difference]: Finished difference Result 168 states and 169 transitions. [2018-07-25 13:20:28,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:20:28,233 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 159 [2018-07-25 13:20:28,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:28,234 INFO L225 Difference]: With dead ends: 168 [2018-07-25 13:20:28,234 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 13:20:28,235 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:20:28,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 13:20:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2018-07-25 13:20:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 13:20:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2018-07-25 13:20:28,250 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 159 [2018-07-25 13:20:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:28,250 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2018-07-25 13:20:28,250 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:20:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2018-07-25 13:20:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 13:20:28,251 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:28,251 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 1, 1, 1, 1] [2018-07-25 13:20:28,251 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:28,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1877110043, now seen corresponding path program 103 times [2018-07-25 13:20:28,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 2756 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:28,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:28,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:20:28,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:20:28,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:20:28,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:20:28,622 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 108 states. [2018-07-25 13:20:29,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:29,102 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-25 13:20:29,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:20:29,102 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 161 [2018-07-25 13:20:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:29,103 INFO L225 Difference]: With dead ends: 272 [2018-07-25 13:20:29,103 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 13:20:29,104 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5937, Invalid=19823, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:20:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 13:20:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 13:20:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 13:20:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 13:20:29,123 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 161 [2018-07-25 13:20:29,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:29,123 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 13:20:29,123 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:20:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 13:20:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 13:20:29,124 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:29,124 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 1, 1, 1, 1] [2018-07-25 13:20:29,125 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:29,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1055958210, now seen corresponding path program 104 times [2018-07-25 13:20:29,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 1431 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:29,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:29,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:20:29,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:20:29,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:20:29,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:20:29,309 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 57 states. [2018-07-25 13:20:29,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:29,449 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2018-07-25 13:20:29,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:20:29,450 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 162 [2018-07-25 13:20:29,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:29,450 INFO L225 Difference]: With dead ends: 171 [2018-07-25 13:20:29,450 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 13:20:29,451 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2862 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:20:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 13:20:29,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2018-07-25 13:20:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 13:20:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 13:20:29,471 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 13:20:29,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:29,471 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 13:20:29,471 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:20:29,471 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 13:20:29,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 13:20:29,472 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:29,472 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 1, 1, 1, 1] [2018-07-25 13:20:29,472 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:29,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1163623978, now seen corresponding path program 105 times [2018-07-25 13:20:29,473 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4293 backedges. 2862 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:29,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:29,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:20:29,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:20:29,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:20:29,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:20:29,765 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 110 states. [2018-07-25 13:20:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:30,576 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2018-07-25 13:20:30,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:20:30,577 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 164 [2018-07-25 13:20:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:30,577 INFO L225 Difference]: With dead ends: 277 [2018-07-25 13:20:30,577 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 13:20:30,579 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6157, Invalid=20575, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:20:30,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 13:20:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 13:20:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 13:20:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2018-07-25 13:20:30,598 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 164 [2018-07-25 13:20:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:30,598 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2018-07-25 13:20:30,598 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:20:30,598 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2018-07-25 13:20:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 13:20:30,599 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:30,599 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 1, 1, 1, 1] [2018-07-25 13:20:30,599 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:30,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1931882205, now seen corresponding path program 106 times [2018-07-25 13:20:30,599 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 1485 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:30,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:30,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:20:30,776 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:20:30,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:20:30,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:20:30,777 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 58 states. [2018-07-25 13:20:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:30,927 INFO L93 Difference]: Finished difference Result 174 states and 175 transitions. [2018-07-25 13:20:30,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:20:30,928 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 165 [2018-07-25 13:20:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:30,928 INFO L225 Difference]: With dead ends: 174 [2018-07-25 13:20:30,928 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 13:20:30,929 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2970 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:20:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 13:20:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2018-07-25 13:20:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 13:20:30,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2018-07-25 13:20:30,948 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 165 [2018-07-25 13:20:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:30,949 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2018-07-25 13:20:30,949 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:20:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2018-07-25 13:20:30,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 13:20:30,949 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:30,950 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 1, 1, 1, 1] [2018-07-25 13:20:30,950 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:30,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1112861109, now seen corresponding path program 107 times [2018-07-25 13:20:30,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 2970 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:31,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:31,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:20:31,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:20:31,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:20:31,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:20:31,241 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand 112 states. [2018-07-25 13:20:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:32,077 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2018-07-25 13:20:32,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:20:32,077 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 167 [2018-07-25 13:20:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:32,078 INFO L225 Difference]: With dead ends: 282 [2018-07-25 13:20:32,078 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 13:20:32,080 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 13:20:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 13:20:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 13:20:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 13:20:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 13:20:32,102 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 167 [2018-07-25 13:20:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:32,102 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 13:20:32,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:20:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 13:20:32,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 13:20:32,103 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:32,103 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 1, 1, 1, 1] [2018-07-25 13:20:32,103 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:32,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2094746446, now seen corresponding path program 108 times [2018-07-25 13:20:32,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 1540 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:32,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:32,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:20:32,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:20:32,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:20:32,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:20:32,278 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 59 states. [2018-07-25 13:20:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:32,505 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 13:20:32,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:20:32,505 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 168 [2018-07-25 13:20:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:32,506 INFO L225 Difference]: With dead ends: 177 [2018-07-25 13:20:32,506 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 13:20:32,507 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:20:32,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 13:20:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2018-07-25 13:20:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 13:20:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 13:20:32,524 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 13:20:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:32,524 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 13:20:32,524 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:20:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 13:20:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 13:20:32,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:32,525 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 1, 1, 1, 1] [2018-07-25 13:20:32,525 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:32,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1288393242, now seen corresponding path program 109 times [2018-07-25 13:20:32,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 3080 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:32,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:32,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:20:32,806 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:20:32,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:20:32,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:20:32,807 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 114 states. [2018-07-25 13:20:33,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:33,728 INFO L93 Difference]: Finished difference Result 287 states and 289 transitions. [2018-07-25 13:20:33,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:20:33,728 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 170 [2018-07-25 13:20:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:33,729 INFO L225 Difference]: With dead ends: 287 [2018-07-25 13:20:33,729 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 13:20:33,730 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6609, Invalid=22121, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:20:33,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 13:20:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 13:20:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 13:20:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2018-07-25 13:20:33,747 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 170 [2018-07-25 13:20:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:33,747 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2018-07-25 13:20:33,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:20:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2018-07-25 13:20:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 13:20:33,747 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:33,748 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 1, 1, 1, 1] [2018-07-25 13:20:33,748 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1330395565, now seen corresponding path program 110 times [2018-07-25 13:20:33,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 1596 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:33,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:33,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:20:33,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:20:33,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:20:33,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:20:33,928 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand 60 states. [2018-07-25 13:20:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:34,076 INFO L93 Difference]: Finished difference Result 180 states and 181 transitions. [2018-07-25 13:20:34,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:20:34,077 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 171 [2018-07-25 13:20:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:34,077 INFO L225 Difference]: With dead ends: 180 [2018-07-25 13:20:34,077 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 13:20:34,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3192 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:20:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 13:20:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-07-25 13:20:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 13:20:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2018-07-25 13:20:34,096 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 171 [2018-07-25 13:20:34,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:34,096 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2018-07-25 13:20:34,096 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:20:34,097 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2018-07-25 13:20:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 13:20:34,097 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:34,098 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 1, 1, 1, 1] [2018-07-25 13:20:34,098 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:34,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1390182267, now seen corresponding path program 111 times [2018-07-25 13:20:34,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 3192 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:34,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:34,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:20:34,446 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:20:34,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:20:34,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:20:34,448 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 116 states. [2018-07-25 13:20:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:35,380 INFO L93 Difference]: Finished difference Result 292 states and 294 transitions. [2018-07-25 13:20:35,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:20:35,381 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 173 [2018-07-25 13:20:35,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:35,381 INFO L225 Difference]: With dead ends: 292 [2018-07-25 13:20:35,381 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 13:20:35,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6841, Invalid=22915, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:20:35,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 13:20:35,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 13:20:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 13:20:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 13:20:35,405 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 173 [2018-07-25 13:20:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:35,405 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 13:20:35,405 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:20:35,405 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 13:20:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 13:20:35,406 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:35,406 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 1, 1, 1, 1] [2018-07-25 13:20:35,406 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:35,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1161202526, now seen corresponding path program 112 times [2018-07-25 13:20:35,407 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 1653 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:35,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:35,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:20:35,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:20:35,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:20:35,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:20:35,601 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 61 states. [2018-07-25 13:20:35,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:35,776 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2018-07-25 13:20:35,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:20:35,776 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 174 [2018-07-25 13:20:35,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:35,776 INFO L225 Difference]: With dead ends: 183 [2018-07-25 13:20:35,776 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 13:20:35,777 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3306 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:20:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 13:20:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2018-07-25 13:20:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 13:20:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 13:20:35,801 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 13:20:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:35,801 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 13:20:35,801 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:20:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 13:20:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 13:20:35,802 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:35,802 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 1, 1, 1, 1] [2018-07-25 13:20:35,802 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:35,803 INFO L82 PathProgramCache]: Analyzing trace with hash 775935498, now seen corresponding path program 113 times [2018-07-25 13:20:35,803 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 3306 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:36,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:36,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:20:36,195 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:20:36,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:20:36,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:20:36,196 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 118 states. [2018-07-25 13:20:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:37,226 INFO L93 Difference]: Finished difference Result 297 states and 299 transitions. [2018-07-25 13:20:37,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:20:37,227 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 176 [2018-07-25 13:20:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:37,227 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:20:37,227 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 13:20:37,229 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 13:20:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 13:20:37,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 13:20:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 13:20:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2018-07-25 13:20:37,246 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 176 [2018-07-25 13:20:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:37,246 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2018-07-25 13:20:37,246 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:20:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2018-07-25 13:20:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 13:20:37,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:37,247 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 1, 1, 1, 1] [2018-07-25 13:20:37,247 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash 507804547, now seen corresponding path program 114 times [2018-07-25 13:20:37,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 1711 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:37,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:37,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:20:37,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:20:37,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:20:37,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:20:37,489 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 62 states. [2018-07-25 13:20:37,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:37,657 INFO L93 Difference]: Finished difference Result 186 states and 187 transitions. [2018-07-25 13:20:37,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:20:37,657 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 177 [2018-07-25 13:20:37,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:37,657 INFO L225 Difference]: With dead ends: 186 [2018-07-25 13:20:37,657 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 13:20:37,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3422 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:20:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 13:20:37,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2018-07-25 13:20:37,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 13:20:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2018-07-25 13:20:37,675 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 177 [2018-07-25 13:20:37,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:37,676 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2018-07-25 13:20:37,676 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:20:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2018-07-25 13:20:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 13:20:37,676 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:37,676 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 1, 1, 1, 1] [2018-07-25 13:20:37,677 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:37,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1626036053, now seen corresponding path program 115 times [2018-07-25 13:20:37,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5133 backedges. 3422 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:37,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:37,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:20:37,992 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:20:37,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:20:37,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:20:37,994 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand 120 states. [2018-07-25 13:20:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:38,935 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-25 13:20:38,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:20:38,935 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 179 [2018-07-25 13:20:38,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:38,936 INFO L225 Difference]: With dead ends: 302 [2018-07-25 13:20:38,936 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 13:20:38,938 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7317, Invalid=24545, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:20:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 13:20:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 13:20:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 13:20:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 13:20:38,962 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 179 [2018-07-25 13:20:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:38,962 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 13:20:38,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:20:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 13:20:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 13:20:38,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:38,963 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 1, 1, 1, 1] [2018-07-25 13:20:38,964 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:38,964 INFO L82 PathProgramCache]: Analyzing trace with hash -876026734, now seen corresponding path program 116 times [2018-07-25 13:20:38,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 1770 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:39,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:39,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:20:39,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:20:39,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:20:39,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:20:39,174 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 63 states. [2018-07-25 13:20:39,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:39,346 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 13:20:39,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:20:39,346 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 180 [2018-07-25 13:20:39,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:39,347 INFO L225 Difference]: With dead ends: 189 [2018-07-25 13:20:39,347 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 13:20:39,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3540 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:20:39,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 13:20:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-07-25 13:20:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 13:20:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 13:20:39,372 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 13:20:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:39,373 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 13:20:39,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:20:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 13:20:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 13:20:39,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:39,374 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 1, 1, 1, 1] [2018-07-25 13:20:39,374 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash -48035334, now seen corresponding path program 117 times [2018-07-25 13:20:39,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5310 backedges. 3540 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:39,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:39,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:20:39,672 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:20:39,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:20:39,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:20:39,674 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 122 states. [2018-07-25 13:20:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:40,284 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-25 13:20:40,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:20:40,284 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 182 [2018-07-25 13:20:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:40,284 INFO L225 Difference]: With dead ends: 307 [2018-07-25 13:20:40,284 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 13:20:40,286 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7561, Invalid=25381, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:20:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 13:20:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 13:20:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 13:20:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2018-07-25 13:20:40,310 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 182 [2018-07-25 13:20:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:40,310 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2018-07-25 13:20:40,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:20:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2018-07-25 13:20:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 13:20:40,311 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:40,312 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 1, 1, 1, 1] [2018-07-25 13:20:40,312 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:40,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1059713203, now seen corresponding path program 118 times [2018-07-25 13:20:40,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 1830 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:40,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:40,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:20:40,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:20:40,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:20:40,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:20:40,512 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 64 states. [2018-07-25 13:20:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:40,732 INFO L93 Difference]: Finished difference Result 192 states and 193 transitions. [2018-07-25 13:20:40,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:20:40,732 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 183 [2018-07-25 13:20:40,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:40,733 INFO L225 Difference]: With dead ends: 192 [2018-07-25 13:20:40,733 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 13:20:40,734 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3660 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:20:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 13:20:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2018-07-25 13:20:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 13:20:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2018-07-25 13:20:40,752 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 183 [2018-07-25 13:20:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:40,753 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2018-07-25 13:20:40,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:20:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2018-07-25 13:20:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 13:20:40,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:40,754 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 1, 1, 1, 1] [2018-07-25 13:20:40,754 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:40,754 INFO L82 PathProgramCache]: Analyzing trace with hash 477204955, now seen corresponding path program 119 times [2018-07-25 13:20:40,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 3660 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:41,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:41,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:20:41,043 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:20:41,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:20:41,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:20:41,044 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 124 states. [2018-07-25 13:20:41,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:41,796 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2018-07-25 13:20:41,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:20:41,796 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 185 [2018-07-25 13:20:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:41,797 INFO L225 Difference]: With dead ends: 312 [2018-07-25 13:20:41,797 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 13:20:41,799 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7809, Invalid=26231, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:20:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 13:20:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 13:20:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 13:20:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 13:20:41,824 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 185 [2018-07-25 13:20:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:41,825 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 13:20:41,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:20:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 13:20:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 13:20:41,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:41,826 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 1, 1, 1, 1] [2018-07-25 13:20:41,826 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:41,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1114831742, now seen corresponding path program 120 times [2018-07-25 13:20:41,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 1891 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:42,055 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:42,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:20:42,056 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:20:42,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:20:42,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:20:42,056 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 65 states. [2018-07-25 13:20:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:42,250 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2018-07-25 13:20:42,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:20:42,251 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 186 [2018-07-25 13:20:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:42,251 INFO L225 Difference]: With dead ends: 195 [2018-07-25 13:20:42,251 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 13:20:42,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3782 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:20:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 13:20:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-07-25 13:20:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 13:20:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 13:20:42,275 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 13:20:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:42,276 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 13:20:42,276 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:20:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 13:20:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 13:20:42,276 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:42,276 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 1, 1, 1, 1] [2018-07-25 13:20:42,277 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:42,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1906381334, now seen corresponding path program 121 times [2018-07-25 13:20:42,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5673 backedges. 3782 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:42,635 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:42,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 13:20:42,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 13:20:42,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 13:20:42,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:20:42,637 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 126 states. [2018-07-25 13:20:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:43,388 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2018-07-25 13:20:43,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:20:43,388 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 188 [2018-07-25 13:20:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:43,389 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:20:43,389 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 13:20:43,391 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5612 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8061, Invalid=27095, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:20:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 13:20:43,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 13:20:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 13:20:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2018-07-25 13:20:43,417 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 188 [2018-07-25 13:20:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:43,418 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2018-07-25 13:20:43,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 13:20:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2018-07-25 13:20:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 13:20:43,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:43,419 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 1, 1, 1, 1] [2018-07-25 13:20:43,419 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:43,419 INFO L82 PathProgramCache]: Analyzing trace with hash -947771933, now seen corresponding path program 122 times [2018-07-25 13:20:43,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 1953 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:43,646 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:43,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:20:43,647 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:20:43,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:20:43,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:20:43,648 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 66 states. [2018-07-25 13:20:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:43,856 INFO L93 Difference]: Finished difference Result 198 states and 199 transitions. [2018-07-25 13:20:43,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:20:43,856 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 189 [2018-07-25 13:20:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:43,857 INFO L225 Difference]: With dead ends: 198 [2018-07-25 13:20:43,857 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 13:20:43,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:20:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 13:20:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2018-07-25 13:20:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 13:20:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2018-07-25 13:20:43,884 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 189 [2018-07-25 13:20:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:43,884 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2018-07-25 13:20:43,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:20:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2018-07-25 13:20:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 13:20:43,885 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:43,885 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 1, 1, 1, 1] [2018-07-25 13:20:43,885 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash -275694837, now seen corresponding path program 123 times [2018-07-25 13:20:43,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5859 backedges. 3906 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:44,275 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:44,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:20:44,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:20:44,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:20:44,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:20:44,277 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand 128 states. [2018-07-25 13:20:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:45,274 INFO L93 Difference]: Finished difference Result 322 states and 324 transitions. [2018-07-25 13:20:45,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:20:45,274 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 191 [2018-07-25 13:20:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:45,274 INFO L225 Difference]: With dead ends: 322 [2018-07-25 13:20:45,274 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 13:20:45,275 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=8317, Invalid=27973, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:20:45,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 13:20:45,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 13:20:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 13:20:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 13:20:45,298 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 191 [2018-07-25 13:20:45,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:45,298 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 13:20:45,298 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:20:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 13:20:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 13:20:45,299 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:45,300 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 1, 1, 1, 1] [2018-07-25 13:20:45,300 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:45,300 INFO L82 PathProgramCache]: Analyzing trace with hash 419419250, now seen corresponding path program 124 times [2018-07-25 13:20:45,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 2016 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:45,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:45,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:20:45,534 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:20:45,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:20:45,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:20:45,535 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 67 states. [2018-07-25 13:20:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:45,770 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 13:20:45,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:20:45,771 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 192 [2018-07-25 13:20:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:45,771 INFO L225 Difference]: With dead ends: 201 [2018-07-25 13:20:45,772 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 13:20:45,773 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4032 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:20:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 13:20:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-07-25 13:20:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 13:20:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 13:20:45,805 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 13:20:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:45,805 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 13:20:45,805 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:20:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 13:20:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 13:20:45,806 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:45,807 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 1, 1, 1, 1] [2018-07-25 13:20:45,807 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:45,807 INFO L82 PathProgramCache]: Analyzing trace with hash -664960550, now seen corresponding path program 125 times [2018-07-25 13:20:45,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6048 backedges. 4032 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:46,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:46,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 13:20:46,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 13:20:46,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 13:20:46,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:20:46,307 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 130 states. [2018-07-25 13:20:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:46,983 INFO L93 Difference]: Finished difference Result 327 states and 329 transitions. [2018-07-25 13:20:46,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:20:46,983 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 194 [2018-07-25 13:20:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:46,984 INFO L225 Difference]: With dead ends: 327 [2018-07-25 13:20:46,984 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 13:20:46,986 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 13:20:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 13:20:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 13:20:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 13:20:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2018-07-25 13:20:47,014 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 194 [2018-07-25 13:20:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:47,014 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2018-07-25 13:20:47,014 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 13:20:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2018-07-25 13:20:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 13:20:47,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:47,015 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 1, 1, 1, 1] [2018-07-25 13:20:47,015 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:47,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1441471251, now seen corresponding path program 126 times [2018-07-25 13:20:47,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 2080 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:47,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:47,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:20:47,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:20:47,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:20:47,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:20:47,268 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand 68 states. [2018-07-25 13:20:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:47,504 INFO L93 Difference]: Finished difference Result 204 states and 205 transitions. [2018-07-25 13:20:47,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:20:47,504 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 195 [2018-07-25 13:20:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:47,505 INFO L225 Difference]: With dead ends: 204 [2018-07-25 13:20:47,505 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 13:20:47,506 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:20:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 13:20:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2018-07-25 13:20:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 13:20:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2018-07-25 13:20:47,535 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 195 [2018-07-25 13:20:47,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:47,536 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2018-07-25 13:20:47,536 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:20:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2018-07-25 13:20:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 13:20:47,537 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:47,537 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 1, 1, 1, 1] [2018-07-25 13:20:47,537 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2020498373, now seen corresponding path program 127 times [2018-07-25 13:20:47,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 4160 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:47,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:47,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:20:47,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:20:47,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:20:47,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:20:47,947 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 132 states. [2018-07-25 13:20:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:48,687 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-25 13:20:48,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:20:48,687 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 197 [2018-07-25 13:20:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:48,687 INFO L225 Difference]: With dead ends: 332 [2018-07-25 13:20:48,688 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 13:20:48,690 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 13:20:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 13:20:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 13:20:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 13:20:48,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 13:20:48,712 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 197 [2018-07-25 13:20:48,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:48,713 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 13:20:48,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:20:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 13:20:48,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 13:20:48,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:48,714 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 1, 1, 1, 1] [2018-07-25 13:20:48,714 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:48,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1217090658, now seen corresponding path program 128 times [2018-07-25 13:20:48,714 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 2145 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:48,985 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:48,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:20:48,986 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:20:48,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:20:48,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:20:48,986 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 69 states. [2018-07-25 13:20:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:49,226 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2018-07-25 13:20:49,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:20:49,226 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 198 [2018-07-25 13:20:49,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:49,226 INFO L225 Difference]: With dead ends: 207 [2018-07-25 13:20:49,226 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 13:20:49,228 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4290 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:20:49,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 13:20:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 201. [2018-07-25 13:20:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 13:20:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 13:20:49,253 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 13:20:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:49,254 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 13:20:49,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:20:49,254 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 13:20:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 13:20:49,255 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:49,255 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 1, 1, 1, 1] [2018-07-25 13:20:49,255 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:49,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1393083850, now seen corresponding path program 129 times [2018-07-25 13:20:49,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6435 backedges. 4290 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:49,756 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:49,756 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 13:20:49,756 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 13:20:49,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 13:20:49,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:20:49,759 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 134 states. [2018-07-25 13:20:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:50,693 INFO L93 Difference]: Finished difference Result 337 states and 339 transitions. [2018-07-25 13:20:50,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:20:50,693 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 200 [2018-07-25 13:20:50,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:50,694 INFO L225 Difference]: With dead ends: 337 [2018-07-25 13:20:50,694 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 13:20:50,696 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9109, Invalid=30691, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:20:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 13:20:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 13:20:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 13:20:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2018-07-25 13:20:50,726 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 200 [2018-07-25 13:20:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:50,726 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2018-07-25 13:20:50,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 13:20:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2018-07-25 13:20:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 13:20:50,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:50,727 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 1, 1, 1, 1] [2018-07-25 13:20:50,727 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:50,727 INFO L82 PathProgramCache]: Analyzing trace with hash 327340099, now seen corresponding path program 130 times [2018-07-25 13:20:50,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 2211 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:51,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:51,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:20:51,006 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:20:51,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:20:51,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:20:51,007 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 70 states. [2018-07-25 13:20:51,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:51,239 INFO L93 Difference]: Finished difference Result 210 states and 211 transitions. [2018-07-25 13:20:51,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:20:51,240 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 201 [2018-07-25 13:20:51,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:51,240 INFO L225 Difference]: With dead ends: 210 [2018-07-25 13:20:51,240 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 13:20:51,242 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4422 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:20:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 13:20:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-07-25 13:20:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 13:20:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2018-07-25 13:20:51,263 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 201 [2018-07-25 13:20:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:51,264 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2018-07-25 13:20:51,264 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:20:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2018-07-25 13:20:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 13:20:51,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:51,265 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 1, 1, 1, 1] [2018-07-25 13:20:51,265 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1041288555, now seen corresponding path program 131 times [2018-07-25 13:20:51,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6633 backedges. 4422 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:51,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:51,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:20:51,672 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:20:51,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:20:51,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:20:51,673 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand 136 states. [2018-07-25 13:20:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:52,542 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2018-07-25 13:20:52,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:20:52,542 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 203 [2018-07-25 13:20:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:52,543 INFO L225 Difference]: With dead ends: 342 [2018-07-25 13:20:52,543 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 13:20:52,545 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9381, Invalid=31625, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:20:52,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 13:20:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 13:20:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 13:20:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 13:20:52,563 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 203 [2018-07-25 13:20:52,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:52,564 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 13:20:52,564 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:20:52,564 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 13:20:52,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 13:20:52,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:52,564 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 1, 1, 1, 1] [2018-07-25 13:20:52,565 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:52,565 INFO L82 PathProgramCache]: Analyzing trace with hash -132545454, now seen corresponding path program 132 times [2018-07-25 13:20:52,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 2278 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:52,801 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:52,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:20:52,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:20:52,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:20:52,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:20:52,802 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 71 states. [2018-07-25 13:20:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:53,045 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 13:20:53,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:20:53,045 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 204 [2018-07-25 13:20:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:53,046 INFO L225 Difference]: With dead ends: 213 [2018-07-25 13:20:53,046 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 13:20:53,047 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4556 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:20:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 13:20:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-07-25 13:20:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 13:20:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 13:20:53,077 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 13:20:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:53,077 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 13:20:53,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:20:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 13:20:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 13:20:53,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:53,078 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 1, 1, 1, 1] [2018-07-25 13:20:53,079 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1472903610, now seen corresponding path program 133 times [2018-07-25 13:20:53,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6834 backedges. 4556 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:53,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:53,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 13:20:53,545 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 13:20:53,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 13:20:53,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4829, Invalid=14077, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:20:53,547 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 138 states. [2018-07-25 13:20:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:54,122 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2018-07-25 13:20:54,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:20:54,122 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 206 [2018-07-25 13:20:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:54,123 INFO L225 Difference]: With dead ends: 347 [2018-07-25 13:20:54,123 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 13:20:54,125 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 13:20:54,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 13:20:54,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 13:20:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 13:20:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2018-07-25 13:20:54,153 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 206 [2018-07-25 13:20:54,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:54,153 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2018-07-25 13:20:54,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 13:20:54,153 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2018-07-25 13:20:54,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 13:20:54,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:54,154 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 1, 1, 1, 1] [2018-07-25 13:20:54,154 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:54,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1407665523, now seen corresponding path program 134 times [2018-07-25 13:20:54,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 2346 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:54,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:54,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:20:54,437 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:20:54,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:20:54,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:20:54,438 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand 72 states. [2018-07-25 13:20:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:54,695 INFO L93 Difference]: Finished difference Result 216 states and 217 transitions. [2018-07-25 13:20:54,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:20:54,695 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 207 [2018-07-25 13:20:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:54,695 INFO L225 Difference]: With dead ends: 216 [2018-07-25 13:20:54,696 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 13:20:54,697 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4692 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:20:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 13:20:54,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2018-07-25 13:20:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 13:20:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2018-07-25 13:20:54,719 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 207 [2018-07-25 13:20:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:54,719 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2018-07-25 13:20:54,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:20:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2018-07-25 13:20:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 13:20:54,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:54,720 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 1, 1, 1, 1] [2018-07-25 13:20:54,720 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:54,720 INFO L82 PathProgramCache]: Analyzing trace with hash -148064613, now seen corresponding path program 135 times [2018-07-25 13:20:54,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7038 backedges. 4692 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:55,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:55,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:20:55,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:20:55,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:20:55,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:20:55,181 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 140 states. [2018-07-25 13:20:56,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:56,178 INFO L93 Difference]: Finished difference Result 352 states and 354 transitions. [2018-07-25 13:20:56,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:20:56,178 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 209 [2018-07-25 13:20:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:56,178 INFO L225 Difference]: With dead ends: 352 [2018-07-25 13:20:56,179 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 13:20:56,181 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 13:20:56,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 13:20:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 13:20:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 13:20:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 13:20:56,204 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 209 [2018-07-25 13:20:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:56,204 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 13:20:56,204 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:20:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 13:20:56,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 13:20:56,205 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:56,205 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 1, 1, 1, 1] [2018-07-25 13:20:56,205 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:56,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1964270658, now seen corresponding path program 136 times [2018-07-25 13:20:56,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 2415 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:56,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:56,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:20:56,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:20:56,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:20:56,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:20:56,468 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 73 states. [2018-07-25 13:20:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:56,700 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2018-07-25 13:20:56,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:20:56,700 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 210 [2018-07-25 13:20:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:56,701 INFO L225 Difference]: With dead ends: 219 [2018-07-25 13:20:56,701 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 13:20:56,702 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4830 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:20:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 13:20:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2018-07-25 13:20:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 13:20:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 13:20:56,724 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 13:20:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:56,724 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 13:20:56,724 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:20:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 13:20:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 13:20:56,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:56,725 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 1, 1, 1, 1] [2018-07-25 13:20:56,725 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:56,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2121441878, now seen corresponding path program 137 times [2018-07-25 13:20:56,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7245 backedges. 4830 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:57,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:57,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 13:20:57,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 13:20:57,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 13:20:57,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5111, Invalid=14911, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:20:57,193 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 142 states. [2018-07-25 13:20:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:58,281 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2018-07-25 13:20:58,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:20:58,282 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 212 [2018-07-25 13:20:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:58,282 INFO L225 Difference]: With dead ends: 357 [2018-07-25 13:20:58,282 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 13:20:58,283 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 13:20:58,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 13:20:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 13:20:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 13:20:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2018-07-25 13:20:58,308 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 212 [2018-07-25 13:20:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:58,309 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2018-07-25 13:20:58,309 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 13:20:58,309 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2018-07-25 13:20:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 13:20:58,310 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:58,310 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 1, 1, 1, 1] [2018-07-25 13:20:58,310 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:58,310 INFO L82 PathProgramCache]: Analyzing trace with hash 892762787, now seen corresponding path program 138 times [2018-07-25 13:20:58,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 2485 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:58,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:58,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:20:58,638 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:20:58,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:20:58,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:20:58,639 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 74 states. [2018-07-25 13:20:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:58,853 INFO L93 Difference]: Finished difference Result 222 states and 223 transitions. [2018-07-25 13:20:58,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:20:58,854 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 213 [2018-07-25 13:20:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:58,854 INFO L225 Difference]: With dead ends: 222 [2018-07-25 13:20:58,854 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 13:20:58,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4970 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:20:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 13:20:58,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2018-07-25 13:20:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 13:20:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2018-07-25 13:20:58,875 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 213 [2018-07-25 13:20:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:58,875 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2018-07-25 13:20:58,875 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:20:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2018-07-25 13:20:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 13:20:58,876 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:58,876 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 1, 1, 1, 1] [2018-07-25 13:20:58,877 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:58,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1048354869, now seen corresponding path program 139 times [2018-07-25 13:20:58,877 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7455 backedges. 4970 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:59,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:59,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:20:59,407 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:20:59,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:20:59,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:20:59,409 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand 144 states. [2018-07-25 13:21:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:00,193 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-07-25 13:21:00,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:21:00,193 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 215 [2018-07-25 13:21:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:00,194 INFO L225 Difference]: With dead ends: 362 [2018-07-25 13:21:00,194 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 13:21:00,197 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 13:21:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 13:21:00,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 13:21:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 13:21:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 13:21:00,220 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 215 [2018-07-25 13:21:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:00,220 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 13:21:00,220 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:21:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 13:21:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 13:21:00,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:00,221 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 1, 1, 1, 1] [2018-07-25 13:21:00,221 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash 241562674, now seen corresponding path program 140 times [2018-07-25 13:21:00,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7526 backedges. 2556 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:00,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:00,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:21:00,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:21:00,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:21:00,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:21:00,536 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 75 states. [2018-07-25 13:21:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:00,811 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 13:21:00,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:21:00,811 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 216 [2018-07-25 13:21:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:00,811 INFO L225 Difference]: With dead ends: 225 [2018-07-25 13:21:00,811 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 13:21:00,812 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:21:00,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 13:21:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-07-25 13:21:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 13:21:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 13:21:00,836 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 13:21:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:00,836 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 13:21:00,836 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:21:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 13:21:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 13:21:00,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:00,837 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 1, 1, 1, 1] [2018-07-25 13:21:00,837 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash 213561754, now seen corresponding path program 141 times [2018-07-25 13:21:00,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7668 backedges. 5112 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:01,330 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:01,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 13:21:01,330 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 13:21:01,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 13:21:01,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=15769, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:21:01,332 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 146 states. [2018-07-25 13:21:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:02,085 INFO L93 Difference]: Finished difference Result 367 states and 369 transitions. [2018-07-25 13:21:02,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:21:02,085 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 218 [2018-07-25 13:21:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:02,086 INFO L225 Difference]: With dead ends: 367 [2018-07-25 13:21:02,086 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 13:21:02,089 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 13:21:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 13:21:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 13:21:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 13:21:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 221 transitions. [2018-07-25 13:21:02,113 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 221 transitions. Word has length 218 [2018-07-25 13:21:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:02,113 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 221 transitions. [2018-07-25 13:21:02,113 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 13:21:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 221 transitions. [2018-07-25 13:21:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 13:21:02,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:02,114 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 1, 1, 1, 1] [2018-07-25 13:21:02,115 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:02,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1074687955, now seen corresponding path program 142 times [2018-07-25 13:21:02,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7740 backedges. 2628 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:02,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:02,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:21:02,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:21:02,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:21:02,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:21:02,453 INFO L87 Difference]: Start difference. First operand 220 states and 221 transitions. Second operand 76 states. [2018-07-25 13:21:02,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:02,711 INFO L93 Difference]: Finished difference Result 228 states and 229 transitions. [2018-07-25 13:21:02,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:21:02,711 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 219 [2018-07-25 13:21:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:02,712 INFO L225 Difference]: With dead ends: 228 [2018-07-25 13:21:02,712 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 13:21:02,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:21:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 13:21:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 222. [2018-07-25 13:21:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 13:21:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2018-07-25 13:21:02,737 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 219 [2018-07-25 13:21:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:02,737 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2018-07-25 13:21:02,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:21:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2018-07-25 13:21:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 13:21:02,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:02,738 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 1, 1, 1, 1] [2018-07-25 13:21:02,738 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:02,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1983039739, now seen corresponding path program 143 times [2018-07-25 13:21:02,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7884 backedges. 5256 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:03,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:03,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:21:03,253 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:21:03,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:21:03,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:21:03,255 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 148 states. [2018-07-25 13:21:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:04,191 INFO L93 Difference]: Finished difference Result 372 states and 374 transitions. [2018-07-25 13:21:04,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:21:04,191 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 221 [2018-07-25 13:21:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:04,192 INFO L225 Difference]: With dead ends: 372 [2018-07-25 13:21:04,192 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 13:21:04,196 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11097, Invalid=37523, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:21:04,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 13:21:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 13:21:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 13:21:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 13:21:04,231 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 221 [2018-07-25 13:21:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:04,232 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 13:21:04,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:21:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 13:21:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 13:21:04,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:04,233 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 1, 1, 1, 1] [2018-07-25 13:21:04,233 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:04,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1954034722, now seen corresponding path program 144 times [2018-07-25 13:21:04,233 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 2701 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:04,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:04,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:21:04,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:21:04,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:21:04,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:21:04,618 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 77 states. [2018-07-25 13:21:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:04,897 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2018-07-25 13:21:04,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:21:04,897 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 222 [2018-07-25 13:21:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:04,898 INFO L225 Difference]: With dead ends: 231 [2018-07-25 13:21:04,898 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 13:21:04,900 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5402 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:21:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 13:21:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2018-07-25 13:21:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 13:21:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 13:21:04,925 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 13:21:04,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:04,925 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 13:21:04,925 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:21:04,925 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 13:21:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 13:21:04,926 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:04,926 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 1, 1, 1, 1] [2018-07-25 13:21:04,926 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:04,926 INFO L82 PathProgramCache]: Analyzing trace with hash 926725514, now seen corresponding path program 145 times [2018-07-25 13:21:04,926 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8103 backedges. 5402 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:05,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:05,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 13:21:05,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 13:21:05,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 13:21:05,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5699, Invalid=16651, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:21:05,469 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 150 states. [2018-07-25 13:21:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:06,757 INFO L93 Difference]: Finished difference Result 377 states and 379 transitions. [2018-07-25 13:21:06,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:21:06,757 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 224 [2018-07-25 13:21:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:06,757 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:21:06,757 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 13:21:06,759 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 13:21:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 13:21:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 13:21:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 13:21:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2018-07-25 13:21:06,784 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 224 [2018-07-25 13:21:06,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:06,784 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2018-07-25 13:21:06,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 13:21:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2018-07-25 13:21:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 13:21:06,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:06,785 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 1, 1, 1, 1] [2018-07-25 13:21:06,785 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:06,785 INFO L82 PathProgramCache]: Analyzing trace with hash 126690563, now seen corresponding path program 146 times [2018-07-25 13:21:06,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 2775 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:07,121 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:07,121 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:21:07,121 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:21:07,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:21:07,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:21:07,122 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 78 states. [2018-07-25 13:21:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:07,454 INFO L93 Difference]: Finished difference Result 234 states and 235 transitions. [2018-07-25 13:21:07,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:21:07,454 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 225 [2018-07-25 13:21:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:07,454 INFO L225 Difference]: With dead ends: 234 [2018-07-25 13:21:07,455 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 13:21:07,456 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5550 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:21:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 13:21:07,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2018-07-25 13:21:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 13:21:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 229 transitions. [2018-07-25 13:21:07,482 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 229 transitions. Word has length 225 [2018-07-25 13:21:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:07,482 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 229 transitions. [2018-07-25 13:21:07,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:21:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 229 transitions. [2018-07-25 13:21:07,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 13:21:07,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:07,483 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 1, 1, 1, 1] [2018-07-25 13:21:07,483 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:07,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1490612779, now seen corresponding path program 147 times [2018-07-25 13:21:07,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8325 backedges. 5550 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:08,050 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:08,050 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:21:08,050 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:21:08,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:21:08,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:21:08,052 INFO L87 Difference]: Start difference. First operand 228 states and 229 transitions. Second operand 152 states. [2018-07-25 13:21:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:09,391 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2018-07-25 13:21:09,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:21:09,391 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 227 [2018-07-25 13:21:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:09,392 INFO L225 Difference]: With dead ends: 382 [2018-07-25 13:21:09,392 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 13:21:09,395 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 13:21:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 13:21:09,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 13:21:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 13:21:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 13:21:09,419 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 227 [2018-07-25 13:21:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:09,419 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 13:21:09,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:21:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 13:21:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 13:21:09,420 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:09,420 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 1, 1, 1, 1] [2018-07-25 13:21:09,420 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:09,420 INFO L82 PathProgramCache]: Analyzing trace with hash 422913042, now seen corresponding path program 148 times [2018-07-25 13:21:09,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8400 backedges. 2850 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:09,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:09,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:21:09,740 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:21:09,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:21:09,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:21:09,741 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 79 states. [2018-07-25 13:21:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:10,018 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 13:21:10,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:21:10,018 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 228 [2018-07-25 13:21:10,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:10,019 INFO L225 Difference]: With dead ends: 237 [2018-07-25 13:21:10,019 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 13:21:10,020 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5700 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:21:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 13:21:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-07-25 13:21:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 13:21:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 13:21:10,043 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 13:21:10,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:10,043 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 13:21:10,043 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:21:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 13:21:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 13:21:10,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:10,044 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 1, 1, 1, 1] [2018-07-25 13:21:10,044 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:10,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1602393734, now seen corresponding path program 149 times [2018-07-25 13:21:10,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8550 backedges. 5700 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:10,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:10,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 13:21:10,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 13:21:10,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 13:21:10,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6005, Invalid=17557, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:21:10,752 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 154 states. [2018-07-25 13:21:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:11,848 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2018-07-25 13:21:11,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:21:11,849 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 230 [2018-07-25 13:21:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:11,849 INFO L225 Difference]: With dead ends: 387 [2018-07-25 13:21:11,849 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 13:21:11,851 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 13:21:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 13:21:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 13:21:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 13:21:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2018-07-25 13:21:11,873 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 230 [2018-07-25 13:21:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:11,874 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2018-07-25 13:21:11,874 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 13:21:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2018-07-25 13:21:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 13:21:11,874 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:11,874 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 1, 1, 1, 1] [2018-07-25 13:21:11,875 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash -917464525, now seen corresponding path program 150 times [2018-07-25 13:21:11,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 2926 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:12,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:12,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:21:12,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:21:12,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:21:12,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:21:12,192 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand 80 states. [2018-07-25 13:21:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:12,486 INFO L93 Difference]: Finished difference Result 240 states and 241 transitions. [2018-07-25 13:21:12,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:21:12,487 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 231 [2018-07-25 13:21:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:12,487 INFO L225 Difference]: With dead ends: 240 [2018-07-25 13:21:12,488 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 13:21:12,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5852 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:21:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 13:21:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-07-25 13:21:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 13:21:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2018-07-25 13:21:12,518 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 231 [2018-07-25 13:21:12,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:12,518 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2018-07-25 13:21:12,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:21:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2018-07-25 13:21:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 13:21:12,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:12,519 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 1, 1, 1, 1] [2018-07-25 13:21:12,519 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:12,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1215046821, now seen corresponding path program 151 times [2018-07-25 13:21:12,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 5852 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:13,099 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:13,100 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:21:13,100 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:21:13,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:21:13,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:21:13,103 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 156 states. [2018-07-25 13:21:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:14,304 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2018-07-25 13:21:14,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:21:14,304 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 233 [2018-07-25 13:21:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:14,305 INFO L225 Difference]: With dead ends: 392 [2018-07-25 13:21:14,305 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 13:21:14,307 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12321, Invalid=41735, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 13:21:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 13:21:14,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 13:21:14,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 13:21:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 13:21:14,331 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 233 [2018-07-25 13:21:14,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:14,331 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 13:21:14,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:21:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 13:21:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 13:21:14,331 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:14,332 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 1, 1, 1, 1] [2018-07-25 13:21:14,332 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:14,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1878604798, now seen corresponding path program 152 times [2018-07-25 13:21:14,332 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 3003 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:14,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:14,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:21:14,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:21:14,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:21:14,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:21:14,629 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 81 states. [2018-07-25 13:21:14,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:14,943 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2018-07-25 13:21:14,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:21:14,943 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 234 [2018-07-25 13:21:14,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:14,944 INFO L225 Difference]: With dead ends: 243 [2018-07-25 13:21:14,944 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 13:21:14,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6006 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:21:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 13:21:14,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 237. [2018-07-25 13:21:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 13:21:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 13:21:14,973 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 13:21:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:14,973 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 13:21:14,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:21:14,974 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 13:21:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 13:21:14,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:14,974 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 1, 1, 1, 1] [2018-07-25 13:21:14,974 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:14,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1452880534, now seen corresponding path program 153 times [2018-07-25 13:21:14,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9009 backedges. 6006 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:15,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:15,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 13:21:15,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 13:21:15,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 13:21:15,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6319, Invalid=18487, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:21:15,630 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 158 states. [2018-07-25 13:21:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:16,891 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2018-07-25 13:21:16,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:21:16,892 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 236 [2018-07-25 13:21:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:16,893 INFO L225 Difference]: With dead ends: 397 [2018-07-25 13:21:16,893 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 13:21:16,896 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12637, Invalid=42823, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 13:21:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 13:21:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 13:21:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 13:21:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 239 transitions. [2018-07-25 13:21:16,924 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 239 transitions. Word has length 236 [2018-07-25 13:21:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:16,924 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 239 transitions. [2018-07-25 13:21:16,924 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 13:21:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 239 transitions. [2018-07-25 13:21:16,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 13:21:16,925 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:16,925 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 1, 1, 1, 1] [2018-07-25 13:21:16,925 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:16,925 INFO L82 PathProgramCache]: Analyzing trace with hash 225890147, now seen corresponding path program 154 times [2018-07-25 13:21:16,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9087 backedges. 3081 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:17,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:17,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:21:17,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:21:17,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:21:17,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:21:17,275 INFO L87 Difference]: Start difference. First operand 238 states and 239 transitions. Second operand 82 states. [2018-07-25 13:21:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:17,547 INFO L93 Difference]: Finished difference Result 246 states and 247 transitions. [2018-07-25 13:21:17,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:21:17,547 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 237 [2018-07-25 13:21:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:17,548 INFO L225 Difference]: With dead ends: 246 [2018-07-25 13:21:17,548 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 13:21:17,549 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:21:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 13:21:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2018-07-25 13:21:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 13:21:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2018-07-25 13:21:17,573 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 237 [2018-07-25 13:21:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:17,573 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2018-07-25 13:21:17,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:21:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2018-07-25 13:21:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 13:21:17,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:17,574 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 78, 1, 1, 1, 1] [2018-07-25 13:21:17,574 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:17,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1962834805, now seen corresponding path program 155 times [2018-07-25 13:21:17,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9243 backedges. 6162 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:18,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:18,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:21:18,118 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:21:18,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:21:18,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:21:18,119 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand 160 states. [2018-07-25 13:21:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:19,423 INFO L93 Difference]: Finished difference Result 402 states and 404 transitions. [2018-07-25 13:21:19,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:21:19,423 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 239 [2018-07-25 13:21:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:19,423 INFO L225 Difference]: With dead ends: 402 [2018-07-25 13:21:19,423 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 13:21:19,426 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=12957, Invalid=43925, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 13:21:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 13:21:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 13:21:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 13:21:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 13:21:19,451 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 239 [2018-07-25 13:21:19,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:19,451 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 13:21:19,451 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:21:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 13:21:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 13:21:19,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:19,452 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 78, 1, 1, 1, 1] [2018-07-25 13:21:19,452 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:19,452 INFO L82 PathProgramCache]: Analyzing trace with hash -304671758, now seen corresponding path program 156 times [2018-07-25 13:21:19,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9322 backedges. 3160 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:19,841 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:19,841 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:21:19,841 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:21:19,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:21:19,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:21:19,842 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 83 states. [2018-07-25 13:21:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:20,113 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-07-25 13:21:20,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:21:20,113 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 240 [2018-07-25 13:21:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:20,114 INFO L225 Difference]: With dead ends: 249 [2018-07-25 13:21:20,114 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 13:21:20,116 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:21:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 13:21:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2018-07-25 13:21:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 13:21:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 13:21:20,141 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 13:21:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:20,141 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 13:21:20,141 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:21:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 13:21:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 13:21:20,142 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:20,142 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 79, 1, 1, 1, 1] [2018-07-25 13:21:20,142 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:20,142 INFO L82 PathProgramCache]: Analyzing trace with hash -731717286, now seen corresponding path program 157 times [2018-07-25 13:21:20,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9480 backedges. 6320 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:20,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:20,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 13:21:20,715 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 13:21:20,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 13:21:20,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6641, Invalid=19441, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:21:20,717 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 162 states. [2018-07-25 13:21:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:22,010 INFO L93 Difference]: Finished difference Result 407 states and 409 transitions. [2018-07-25 13:21:22,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:21:22,010 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 242 [2018-07-25 13:21:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:22,011 INFO L225 Difference]: With dead ends: 407 [2018-07-25 13:21:22,011 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 13:21:22,015 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13281, Invalid=45041, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 13:21:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 13:21:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 13:21:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 13:21:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2018-07-25 13:21:22,057 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 242 [2018-07-25 13:21:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:22,057 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 245 transitions. [2018-07-25 13:21:22,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 13:21:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 245 transitions. [2018-07-25 13:21:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 13:21:22,058 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:22,059 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 1, 1, 1, 1] [2018-07-25 13:21:22,059 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:22,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1184744595, now seen corresponding path program 158 times [2018-07-25 13:21:22,059 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9560 backedges. 3240 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:22,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:22,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:21:22,504 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:21:22,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:21:22,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:21:22,505 INFO L87 Difference]: Start difference. First operand 244 states and 245 transitions. Second operand 84 states. [2018-07-25 13:21:22,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:22,795 INFO L93 Difference]: Finished difference Result 252 states and 253 transitions. [2018-07-25 13:21:22,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:21:22,795 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 243 [2018-07-25 13:21:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:22,796 INFO L225 Difference]: With dead ends: 252 [2018-07-25 13:21:22,796 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 13:21:22,797 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6480 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:21:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 13:21:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2018-07-25 13:21:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 13:21:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2018-07-25 13:21:22,822 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 243 [2018-07-25 13:21:22,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:22,823 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2018-07-25 13:21:22,823 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:21:22,823 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2018-07-25 13:21:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 13:21:22,823 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:22,824 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 80, 1, 1, 1, 1] [2018-07-25 13:21:22,824 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:22,824 INFO L82 PathProgramCache]: Analyzing trace with hash 373288379, now seen corresponding path program 159 times [2018-07-25 13:21:22,824 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 6480 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:23,403 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:23,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:21:23,403 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:21:23,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:21:23,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:21:23,405 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand 164 states. [2018-07-25 13:21:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:24,717 INFO L93 Difference]: Finished difference Result 412 states and 414 transitions. [2018-07-25 13:21:24,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:21:24,718 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 245 [2018-07-25 13:21:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:24,718 INFO L225 Difference]: With dead ends: 412 [2018-07-25 13:21:24,718 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 13:21:24,720 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13609, Invalid=46171, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 13:21:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 13:21:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 13:21:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 13:21:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 13:21:24,745 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 245 [2018-07-25 13:21:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:24,746 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 13:21:24,746 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:21:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 13:21:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 13:21:24,747 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:24,747 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 80, 1, 1, 1, 1] [2018-07-25 13:21:24,747 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:24,747 INFO L82 PathProgramCache]: Analyzing trace with hash 688919522, now seen corresponding path program 160 times [2018-07-25 13:21:24,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 3321 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:25,086 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:25,087 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:21:25,087 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:21:25,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:21:25,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:21:25,088 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 85 states. [2018-07-25 13:21:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:25,364 INFO L93 Difference]: Finished difference Result 255 states and 256 transitions. [2018-07-25 13:21:25,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:21:25,364 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 246 [2018-07-25 13:21:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:25,365 INFO L225 Difference]: With dead ends: 255 [2018-07-25 13:21:25,365 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 13:21:25,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6642 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:21:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 13:21:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-07-25 13:21:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 13:21:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 13:21:25,392 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 13:21:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:25,392 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 13:21:25,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:21:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 13:21:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 13:21:25,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:25,393 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 81, 1, 1, 1, 1] [2018-07-25 13:21:25,393 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:25,393 INFO L82 PathProgramCache]: Analyzing trace with hash 626763082, now seen corresponding path program 161 times [2018-07-25 13:21:25,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9963 backedges. 6642 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:25,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:25,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 13:21:25,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 13:21:25,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 13:21:25,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6971, Invalid=20419, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:21:25,970 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 166 states. [2018-07-25 13:21:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:27,284 INFO L93 Difference]: Finished difference Result 417 states and 419 transitions. [2018-07-25 13:21:27,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:21:27,284 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 248 [2018-07-25 13:21:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:27,284 INFO L225 Difference]: With dead ends: 417 [2018-07-25 13:21:27,284 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 13:21:27,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9882 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13941, Invalid=47315, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 13:21:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 13:21:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 13:21:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 13:21:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 251 transitions. [2018-07-25 13:21:27,325 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 251 transitions. Word has length 248 [2018-07-25 13:21:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:27,325 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 251 transitions. [2018-07-25 13:21:27,325 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 13:21:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 251 transitions. [2018-07-25 13:21:27,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 13:21:27,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:27,326 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 1, 1, 1, 1] [2018-07-25 13:21:27,326 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:27,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1910733251, now seen corresponding path program 162 times [2018-07-25 13:21:27,326 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10045 backedges. 3403 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:27,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:27,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:21:27,672 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:21:27,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:21:27,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:21:27,673 INFO L87 Difference]: Start difference. First operand 250 states and 251 transitions. Second operand 86 states. [2018-07-25 13:21:27,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:27,998 INFO L93 Difference]: Finished difference Result 258 states and 259 transitions. [2018-07-25 13:21:27,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:21:27,998 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 249 [2018-07-25 13:21:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:27,999 INFO L225 Difference]: With dead ends: 258 [2018-07-25 13:21:27,999 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 13:21:28,000 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6806 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:21:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 13:21:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 252. [2018-07-25 13:21:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 13:21:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 253 transitions. [2018-07-25 13:21:28,026 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 253 transitions. Word has length 249 [2018-07-25 13:21:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:28,026 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 253 transitions. [2018-07-25 13:21:28,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:21:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 253 transitions. [2018-07-25 13:21:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 13:21:28,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:28,027 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 82, 1, 1, 1, 1] [2018-07-25 13:21:28,027 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:28,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2031282453, now seen corresponding path program 163 times [2018-07-25 13:21:28,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10209 backedges. 6806 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:28,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:28,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:21:28,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:21:28,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:21:28,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:21:28,603 INFO L87 Difference]: Start difference. First operand 252 states and 253 transitions. Second operand 168 states. [2018-07-25 13:21:30,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:30,041 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2018-07-25 13:21:30,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:21:30,041 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 251 [2018-07-25 13:21:30,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:30,042 INFO L225 Difference]: With dead ends: 422 [2018-07-25 13:21:30,042 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 13:21:30,047 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14277, Invalid=48473, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 13:21:30,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 13:21:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 13:21:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 13:21:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 13:21:30,091 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 251 [2018-07-25 13:21:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:30,091 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 13:21:30,091 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:21:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 13:21:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 13:21:30,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:30,093 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 82, 1, 1, 1, 1] [2018-07-25 13:21:30,093 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:30,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2040251346, now seen corresponding path program 164 times [2018-07-25 13:21:30,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10292 backedges. 3486 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:30,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:30,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:21:30,540 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:21:30,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:21:30,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:21:30,541 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 87 states. [2018-07-25 13:21:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:30,868 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-07-25 13:21:30,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:21:30,868 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 252 [2018-07-25 13:21:30,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:30,869 INFO L225 Difference]: With dead ends: 261 [2018-07-25 13:21:30,869 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 13:21:30,871 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6972 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:21:30,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 13:21:30,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-07-25 13:21:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 13:21:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 13:21:30,897 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 13:21:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:30,898 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 13:21:30,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:21:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 13:21:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 13:21:30,898 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:30,898 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 83, 1, 1, 1, 1] [2018-07-25 13:21:30,898 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:30,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2118444742, now seen corresponding path program 165 times [2018-07-25 13:21:30,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10458 backedges. 6972 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:31,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:31,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 13:21:31,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 13:21:31,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 13:21:31,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7309, Invalid=21421, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:21:31,518 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 170 states. [2018-07-25 13:21:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:32,951 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-25 13:21:32,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:21:32,952 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 254 [2018-07-25 13:21:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:32,952 INFO L225 Difference]: With dead ends: 427 [2018-07-25 13:21:32,952 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 13:21:32,954 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10375 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14617, Invalid=49645, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 13:21:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 13:21:32,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 13:21:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 13:21:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2018-07-25 13:21:32,981 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 254 [2018-07-25 13:21:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:32,981 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2018-07-25 13:21:32,981 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 13:21:32,981 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2018-07-25 13:21:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 13:21:32,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:32,982 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 1, 1, 1, 1] [2018-07-25 13:21:32,982 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:32,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1226445069, now seen corresponding path program 166 times [2018-07-25 13:21:32,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10542 backedges. 3570 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:33,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:33,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:21:33,344 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:21:33,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:21:33,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:21:33,345 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand 88 states. [2018-07-25 13:21:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:33,678 INFO L93 Difference]: Finished difference Result 264 states and 265 transitions. [2018-07-25 13:21:33,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:21:33,678 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 255 [2018-07-25 13:21:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:33,678 INFO L225 Difference]: With dead ends: 264 [2018-07-25 13:21:33,678 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 13:21:33,680 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:21:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 13:21:33,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2018-07-25 13:21:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 13:21:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2018-07-25 13:21:33,726 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 255 [2018-07-25 13:21:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:33,726 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 259 transitions. [2018-07-25 13:21:33,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:21:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 259 transitions. [2018-07-25 13:21:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 13:21:33,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:33,728 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 84, 1, 1, 1, 1] [2018-07-25 13:21:33,728 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:33,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1792606181, now seen corresponding path program 167 times [2018-07-25 13:21:33,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10710 backedges. 7140 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:34,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:34,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:21:34,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:21:34,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:21:34,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:21:34,554 INFO L87 Difference]: Start difference. First operand 258 states and 259 transitions. Second operand 172 states. [2018-07-25 13:21:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:35,526 INFO L93 Difference]: Finished difference Result 432 states and 434 transitions. [2018-07-25 13:21:35,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:21:35,526 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 257 [2018-07-25 13:21:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:35,527 INFO L225 Difference]: With dead ends: 432 [2018-07-25 13:21:35,527 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 13:21:35,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14961, Invalid=50831, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 13:21:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 13:21:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 13:21:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 13:21:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 13:21:35,560 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 257 [2018-07-25 13:21:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:35,560 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 13:21:35,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:21:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 13:21:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 13:21:35,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:35,561 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 84, 1, 1, 1, 1] [2018-07-25 13:21:35,561 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:35,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1193008190, now seen corresponding path program 168 times [2018-07-25 13:21:35,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10795 backedges. 3655 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:35,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:35,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:21:35,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:21:35,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:21:35,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:21:35,992 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 89 states. [2018-07-25 13:21:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:36,307 INFO L93 Difference]: Finished difference Result 267 states and 268 transitions. [2018-07-25 13:21:36,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:21:36,307 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 258 [2018-07-25 13:21:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:36,308 INFO L225 Difference]: With dead ends: 267 [2018-07-25 13:21:36,308 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 13:21:36,309 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7310 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:21:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 13:21:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2018-07-25 13:21:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 13:21:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 13:21:36,338 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 13:21:36,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:36,338 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 13:21:36,338 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:21:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 13:21:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 13:21:36,339 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:36,339 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 85, 1, 1, 1, 1] [2018-07-25 13:21:36,339 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:36,339 INFO L82 PathProgramCache]: Analyzing trace with hash 275463466, now seen corresponding path program 169 times [2018-07-25 13:21:36,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10965 backedges. 7310 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:36,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:36,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 13:21:36,957 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 13:21:36,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 13:21:36,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7655, Invalid=22447, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:21:36,960 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 174 states. [2018-07-25 13:21:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:37,636 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2018-07-25 13:21:37,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:21:37,636 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 260 [2018-07-25 13:21:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:37,636 INFO L225 Difference]: With dead ends: 437 [2018-07-25 13:21:37,636 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 13:21:37,640 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10880 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15309, Invalid=52031, Unknown=0, NotChecked=0, Total=67340 [2018-07-25 13:21:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 13:21:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2018-07-25 13:21:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 13:21:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 263 transitions. [2018-07-25 13:21:37,668 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 263 transitions. Word has length 260 [2018-07-25 13:21:37,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:37,669 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 263 transitions. [2018-07-25 13:21:37,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 13:21:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 263 transitions. [2018-07-25 13:21:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-25 13:21:37,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:37,670 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 1, 1, 1, 1] [2018-07-25 13:21:37,670 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:37,670 INFO L82 PathProgramCache]: Analyzing trace with hash 130229283, now seen corresponding path program 170 times [2018-07-25 13:21:37,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11051 backedges. 3741 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:38,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:38,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:21:38,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:21:38,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:21:38,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:21:38,042 INFO L87 Difference]: Start difference. First operand 262 states and 263 transitions. Second operand 90 states. [2018-07-25 13:21:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:38,379 INFO L93 Difference]: Finished difference Result 270 states and 271 transitions. [2018-07-25 13:21:38,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:21:38,379 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 261 [2018-07-25 13:21:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:38,379 INFO L225 Difference]: With dead ends: 270 [2018-07-25 13:21:38,379 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 13:21:38,381 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7482 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:21:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 13:21:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-07-25 13:21:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-07-25 13:21:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2018-07-25 13:21:38,410 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 261 [2018-07-25 13:21:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:38,410 INFO L472 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2018-07-25 13:21:38,410 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:21:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2018-07-25 13:21:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-07-25 13:21:38,411 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:38,411 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 86, 1, 1, 1, 1] [2018-07-25 13:21:38,411 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:38,412 INFO L82 PathProgramCache]: Analyzing trace with hash 596355403, now seen corresponding path program 171 times [2018-07-25 13:21:38,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11223 backedges. 7482 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:39,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:39,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:21:39,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:21:39,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:21:39,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:21:39,105 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand 176 states. [2018-07-25 13:21:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:39,851 INFO L93 Difference]: Finished difference Result 442 states and 444 transitions. [2018-07-25 13:21:39,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:21:39,851 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 263 [2018-07-25 13:21:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:39,852 INFO L225 Difference]: With dead ends: 442 [2018-07-25 13:21:39,852 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 13:21:39,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15661, Invalid=53245, Unknown=0, NotChecked=0, Total=68906 [2018-07-25 13:21:39,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 13:21:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 13:21:39,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 13:21:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 13:21:39,888 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 263 [2018-07-25 13:21:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:39,888 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 13:21:39,888 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:21:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 13:21:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 13:21:39,889 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:39,889 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 86, 1, 1, 1, 1] [2018-07-25 13:21:39,889 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:39,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1043123278, now seen corresponding path program 172 times [2018-07-25 13:21:39,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11310 backedges. 3828 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:40,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:40,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:21:40,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:21:40,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:21:40,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:21:40,330 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 91 states. [2018-07-25 13:21:40,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:40,683 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-07-25 13:21:40,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:21:40,683 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 264 [2018-07-25 13:21:40,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:40,684 INFO L225 Difference]: With dead ends: 273 [2018-07-25 13:21:40,684 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 13:21:40,685 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7656 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:21:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 13:21:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2018-07-25 13:21:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 13:21:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 13:21:40,719 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 13:21:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:40,719 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 13:21:40,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:21:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 13:21:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 13:21:40,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:40,720 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 87, 1, 1, 1, 1] [2018-07-25 13:21:40,720 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:40,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1714024166, now seen corresponding path program 173 times [2018-07-25 13:21:40,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11484 backedges. 7656 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:41,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:41,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 13:21:41,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 13:21:41,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 13:21:41,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8009, Invalid=23497, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:21:41,455 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 178 states. [2018-07-25 13:21:42,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:42,891 INFO L93 Difference]: Finished difference Result 447 states and 449 transitions. [2018-07-25 13:21:42,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:21:42,891 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 266 [2018-07-25 13:21:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:42,892 INFO L225 Difference]: With dead ends: 447 [2018-07-25 13:21:42,892 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 13:21:42,897 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11397 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16017, Invalid=54473, Unknown=0, NotChecked=0, Total=70490 [2018-07-25 13:21:42,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 13:21:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-07-25 13:21:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-07-25 13:21:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 269 transitions. [2018-07-25 13:21:42,933 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 269 transitions. Word has length 266 [2018-07-25 13:21:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:42,933 INFO L472 AbstractCegarLoop]: Abstraction has 268 states and 269 transitions. [2018-07-25 13:21:42,933 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 13:21:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 269 transitions. [2018-07-25 13:21:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-25 13:21:42,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:42,934 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 1, 1, 1, 1] [2018-07-25 13:21:42,934 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:42,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1055319725, now seen corresponding path program 174 times [2018-07-25 13:21:42,934 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11572 backedges. 3916 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:43,404 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:43,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:21:43,404 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:21:43,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:21:43,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:21:43,405 INFO L87 Difference]: Start difference. First operand 268 states and 269 transitions. Second operand 92 states. [2018-07-25 13:21:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:43,720 INFO L93 Difference]: Finished difference Result 276 states and 277 transitions. [2018-07-25 13:21:43,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:21:43,720 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 267 [2018-07-25 13:21:43,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:43,721 INFO L225 Difference]: With dead ends: 276 [2018-07-25 13:21:43,721 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 13:21:43,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7832 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:21:43,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 13:21:43,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 270. [2018-07-25 13:21:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-07-25 13:21:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 271 transitions. [2018-07-25 13:21:43,752 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 271 transitions. Word has length 267 [2018-07-25 13:21:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:43,752 INFO L472 AbstractCegarLoop]: Abstraction has 270 states and 271 transitions. [2018-07-25 13:21:43,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:21:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 271 transitions. [2018-07-25 13:21:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-25 13:21:43,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:43,753 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 88, 1, 1, 1, 1] [2018-07-25 13:21:43,753 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:43,753 INFO L82 PathProgramCache]: Analyzing trace with hash -549907845, now seen corresponding path program 175 times [2018-07-25 13:21:43,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11748 backedges. 7832 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:44,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:44,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:21:44,520 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:21:44,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:21:44,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:21:44,523 INFO L87 Difference]: Start difference. First operand 270 states and 271 transitions. Second operand 180 states. [2018-07-25 13:21:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:46,239 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2018-07-25 13:21:46,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:21:46,239 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 269 [2018-07-25 13:21:46,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:46,239 INFO L225 Difference]: With dead ends: 452 [2018-07-25 13:21:46,239 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 13:21:46,243 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16377, Invalid=55715, Unknown=0, NotChecked=0, Total=72092 [2018-07-25 13:21:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 13:21:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 13:21:46,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 13:21:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 13:21:46,272 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 269 [2018-07-25 13:21:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:46,272 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 13:21:46,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:21:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 13:21:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 13:21:46,273 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:46,273 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 88, 1, 1, 1, 1] [2018-07-25 13:21:46,273 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash -791481438, now seen corresponding path program 176 times [2018-07-25 13:21:46,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11837 backedges. 4005 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:46,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:46,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:21:46,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:21:46,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:21:46,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:21:46,674 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 93 states. [2018-07-25 13:21:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:47,017 INFO L93 Difference]: Finished difference Result 279 states and 280 transitions. [2018-07-25 13:21:47,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:21:47,017 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 270 [2018-07-25 13:21:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:47,017 INFO L225 Difference]: With dead ends: 279 [2018-07-25 13:21:47,017 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 13:21:47,019 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8010 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:21:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 13:21:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2018-07-25 13:21:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 13:21:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 13:21:47,122 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 13:21:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:47,122 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 13:21:47,122 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:21:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 13:21:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 13:21:47,124 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:47,124 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 89, 1, 1, 1, 1] [2018-07-25 13:21:47,124 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:47,124 INFO L82 PathProgramCache]: Analyzing trace with hash -404384502, now seen corresponding path program 177 times [2018-07-25 13:21:47,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12015 backedges. 8010 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:47,815 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:47,815 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 13:21:47,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 13:21:47,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 13:21:47,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8371, Invalid=24571, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:21:47,818 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 182 states. [2018-07-25 13:21:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:49,576 INFO L93 Difference]: Finished difference Result 457 states and 459 transitions. [2018-07-25 13:21:49,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:21:49,576 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 272 [2018-07-25 13:21:49,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:49,576 INFO L225 Difference]: With dead ends: 457 [2018-07-25 13:21:49,576 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 13:21:49,579 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11926 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16741, Invalid=56971, Unknown=0, NotChecked=0, Total=73712 [2018-07-25 13:21:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 13:21:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-07-25 13:21:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 13:21:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 275 transitions. [2018-07-25 13:21:49,610 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 275 transitions. Word has length 272 [2018-07-25 13:21:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:49,610 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 275 transitions. [2018-07-25 13:21:49,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 13:21:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 275 transitions. [2018-07-25 13:21:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-25 13:21:49,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:49,611 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 1, 1, 1, 1] [2018-07-25 13:21:49,611 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:49,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1241894531, now seen corresponding path program 178 times [2018-07-25 13:21:49,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12105 backedges. 4095 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:50,013 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:50,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:21:50,013 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:21:50,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:21:50,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:21:50,014 INFO L87 Difference]: Start difference. First operand 274 states and 275 transitions. Second operand 94 states. [2018-07-25 13:21:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:50,340 INFO L93 Difference]: Finished difference Result 282 states and 283 transitions. [2018-07-25 13:21:50,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:21:50,340 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 273 [2018-07-25 13:21:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:50,341 INFO L225 Difference]: With dead ends: 282 [2018-07-25 13:21:50,341 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 13:21:50,342 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:21:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 13:21:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 276. [2018-07-25 13:21:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-07-25 13:21:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2018-07-25 13:21:50,372 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 273 [2018-07-25 13:21:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:50,373 INFO L472 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2018-07-25 13:21:50,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:21:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2018-07-25 13:21:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-07-25 13:21:50,373 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:50,374 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 90, 1, 1, 1, 1] [2018-07-25 13:21:50,374 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:50,374 INFO L82 PathProgramCache]: Analyzing trace with hash -540197973, now seen corresponding path program 179 times [2018-07-25 13:21:50,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12285 backedges. 8190 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:51,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:51,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:21:51,122 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:21:51,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:21:51,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:21:51,124 INFO L87 Difference]: Start difference. First operand 276 states and 277 transitions. Second operand 184 states. [2018-07-25 13:21:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:52,822 INFO L93 Difference]: Finished difference Result 462 states and 464 transitions. [2018-07-25 13:21:52,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:21:52,822 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 275 [2018-07-25 13:21:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:52,823 INFO L225 Difference]: With dead ends: 462 [2018-07-25 13:21:52,823 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 13:21:52,825 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12195 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17109, Invalid=58241, Unknown=0, NotChecked=0, Total=75350 [2018-07-25 13:21:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 13:21:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 13:21:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 13:21:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 13:21:52,856 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 275 [2018-07-25 13:21:52,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:52,856 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 13:21:52,856 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:21:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 13:21:52,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 13:21:52,857 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:52,857 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 90, 1, 1, 1, 1] [2018-07-25 13:21:52,857 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash -473078894, now seen corresponding path program 180 times [2018-07-25 13:21:52,857 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12376 backedges. 4186 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:53,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:53,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:21:53,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:21:53,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:21:53,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:21:53,287 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 95 states. [2018-07-25 13:21:53,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:53,615 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-07-25 13:21:53,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:21:53,615 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 276 [2018-07-25 13:21:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:53,616 INFO L225 Difference]: With dead ends: 285 [2018-07-25 13:21:53,616 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 13:21:53,617 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8372 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:21:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 13:21:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-07-25 13:21:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 13:21:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 13:21:53,648 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 13:21:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:53,648 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 13:21:53,648 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:21:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 13:21:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 13:21:53,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:53,649 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 91, 1, 1, 1, 1] [2018-07-25 13:21:53,649 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:53,649 INFO L82 PathProgramCache]: Analyzing trace with hash 637782266, now seen corresponding path program 181 times [2018-07-25 13:21:53,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 8372 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:54,326 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:54,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 13:21:54,327 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 13:21:54,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 13:21:54,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8741, Invalid=25669, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:21:54,329 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 186 states. [2018-07-25 13:21:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:55,644 INFO L93 Difference]: Finished difference Result 467 states and 469 transitions. [2018-07-25 13:21:55,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:21:55,645 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 278 [2018-07-25 13:21:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:55,645 INFO L225 Difference]: With dead ends: 467 [2018-07-25 13:21:55,645 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 13:21:55,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12467 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17481, Invalid=59525, Unknown=0, NotChecked=0, Total=77006 [2018-07-25 13:21:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 13:21:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-07-25 13:21:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-07-25 13:21:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2018-07-25 13:21:55,683 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 278 [2018-07-25 13:21:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:55,683 INFO L472 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2018-07-25 13:21:55,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 13:21:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2018-07-25 13:21:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-25 13:21:55,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:55,684 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 1, 1, 1, 1] [2018-07-25 13:21:55,685 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:55,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1272495181, now seen corresponding path program 182 times [2018-07-25 13:21:55,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12650 backedges. 4278 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:56,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:56,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:21:56,143 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:21:56,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:21:56,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:21:56,144 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand 96 states. [2018-07-25 13:21:56,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:56,478 INFO L93 Difference]: Finished difference Result 288 states and 289 transitions. [2018-07-25 13:21:56,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:21:56,478 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 279 [2018-07-25 13:21:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:56,479 INFO L225 Difference]: With dead ends: 288 [2018-07-25 13:21:56,479 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 13:21:56,480 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8556 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:21:56,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 13:21:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2018-07-25 13:21:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-07-25 13:21:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 283 transitions. [2018-07-25 13:21:56,511 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 283 transitions. Word has length 279 [2018-07-25 13:21:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:56,512 INFO L472 AbstractCegarLoop]: Abstraction has 282 states and 283 transitions. [2018-07-25 13:21:56,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:21:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 283 transitions. [2018-07-25 13:21:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-25 13:21:56,512 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:56,512 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 92, 1, 1, 1, 1] [2018-07-25 13:21:56,513 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1197876443, now seen corresponding path program 183 times [2018-07-25 13:21:56,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12834 backedges. 8556 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:57,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:57,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:21:57,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:21:57,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:21:57,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:21:57,201 INFO L87 Difference]: Start difference. First operand 282 states and 283 transitions. Second operand 188 states. [2018-07-25 13:21:57,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:57,989 INFO L93 Difference]: Finished difference Result 472 states and 474 transitions. [2018-07-25 13:21:57,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:21:57,990 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 281 [2018-07-25 13:21:57,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:57,990 INFO L225 Difference]: With dead ends: 472 [2018-07-25 13:21:57,990 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 13:21:57,994 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17857, Invalid=60823, Unknown=0, NotChecked=0, Total=78680 [2018-07-25 13:21:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 13:21:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 13:21:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 13:21:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 13:21:58,026 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 281 [2018-07-25 13:21:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:58,026 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 13:21:58,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:21:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 13:21:58,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 13:21:58,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:58,027 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 92, 1, 1, 1, 1] [2018-07-25 13:21:58,028 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:58,028 INFO L82 PathProgramCache]: Analyzing trace with hash 439124866, now seen corresponding path program 184 times [2018-07-25 13:21:58,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12927 backedges. 4371 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:58,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:58,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:21:58,558 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:21:58,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:21:58,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:21:58,559 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 97 states. [2018-07-25 13:21:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:21:58,922 INFO L93 Difference]: Finished difference Result 291 states and 292 transitions. [2018-07-25 13:21:58,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:21:58,922 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 282 [2018-07-25 13:21:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:21:58,923 INFO L225 Difference]: With dead ends: 291 [2018-07-25 13:21:58,923 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 13:21:58,924 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8742 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:21:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 13:21:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2018-07-25 13:21:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 13:21:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 13:21:58,956 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 13:21:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:21:58,956 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 13:21:58,957 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:21:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 13:21:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 13:21:58,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:21:58,957 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 93, 1, 1, 1, 1] [2018-07-25 13:21:58,958 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:21:58,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1092267242, now seen corresponding path program 185 times [2018-07-25 13:21:58,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:21:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:21:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13113 backedges. 8742 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:21:59,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:21:59,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 13:21:59,670 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 13:21:59,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 13:21:59,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:21:59,673 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 190 states. [2018-07-25 13:22:01,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:01,661 INFO L93 Difference]: Finished difference Result 477 states and 479 transitions. [2018-07-25 13:22:01,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:22:01,661 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 284 [2018-07-25 13:22:01,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:01,662 INFO L225 Difference]: With dead ends: 477 [2018-07-25 13:22:01,662 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 13:22:01,665 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13020 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18237, Invalid=62135, Unknown=0, NotChecked=0, Total=80372 [2018-07-25 13:22:01,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 13:22:01,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-07-25 13:22:01,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 13:22:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 287 transitions. [2018-07-25 13:22:01,700 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 287 transitions. Word has length 284 [2018-07-25 13:22:01,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:01,701 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 287 transitions. [2018-07-25 13:22:01,701 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 13:22:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 287 transitions. [2018-07-25 13:22:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-25 13:22:01,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:01,702 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 1, 1, 1, 1] [2018-07-25 13:22:01,702 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:01,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1536915683, now seen corresponding path program 186 times [2018-07-25 13:22:01,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 4465 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:02,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:02,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:22:02,158 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:22:02,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:22:02,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:22:02,159 INFO L87 Difference]: Start difference. First operand 286 states and 287 transitions. Second operand 98 states. [2018-07-25 13:22:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:02,599 INFO L93 Difference]: Finished difference Result 294 states and 295 transitions. [2018-07-25 13:22:02,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:22:02,599 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 285 [2018-07-25 13:22:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:02,600 INFO L225 Difference]: With dead ends: 294 [2018-07-25 13:22:02,600 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 13:22:02,602 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8930 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:22:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 13:22:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2018-07-25 13:22:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-07-25 13:22:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2018-07-25 13:22:02,639 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 285 [2018-07-25 13:22:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:02,640 INFO L472 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2018-07-25 13:22:02,640 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:22:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2018-07-25 13:22:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-25 13:22:02,641 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:02,641 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 94, 1, 1, 1, 1] [2018-07-25 13:22:02,641 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:02,641 INFO L82 PathProgramCache]: Analyzing trace with hash -492712437, now seen corresponding path program 187 times [2018-07-25 13:22:02,641 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 8930 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:03,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:03,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:22:03,479 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:22:03,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:22:03,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:22:03,482 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand 192 states. [2018-07-25 13:22:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:04,851 INFO L93 Difference]: Finished difference Result 482 states and 484 transitions. [2018-07-25 13:22:04,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:22:04,851 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 287 [2018-07-25 13:22:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:04,851 INFO L225 Difference]: With dead ends: 482 [2018-07-25 13:22:04,851 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 13:22:04,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18621, Invalid=63461, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 13:22:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 13:22:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 13:22:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 13:22:04,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 13:22:04,895 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 287 [2018-07-25 13:22:04,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:04,895 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 13:22:04,895 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:22:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 13:22:04,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 13:22:04,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:04,896 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 94, 1, 1, 1, 1] [2018-07-25 13:22:04,896 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:04,896 INFO L82 PathProgramCache]: Analyzing trace with hash 349852530, now seen corresponding path program 188 times [2018-07-25 13:22:04,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 13490 backedges. 4560 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:05,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:05,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:22:05,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:22:05,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:22:05,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:22:05,419 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 99 states. [2018-07-25 13:22:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:05,839 INFO L93 Difference]: Finished difference Result 297 states and 298 transitions. [2018-07-25 13:22:05,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:22:05,839 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 288 [2018-07-25 13:22:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:05,839 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:22:05,840 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 13:22:05,842 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:22:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 13:22:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2018-07-25 13:22:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 13:22:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 13:22:05,883 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 13:22:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:05,883 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 13:22:05,883 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:22:05,884 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 13:22:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 13:22:05,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:05,884 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 95, 1, 1, 1, 1] [2018-07-25 13:22:05,885 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:05,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1200898266, now seen corresponding path program 189 times [2018-07-25 13:22:05,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13680 backedges. 9120 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:06,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:06,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 13:22:06,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 13:22:06,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 13:22:06,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9505, Invalid=27937, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:22:06,806 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 194 states. [2018-07-25 13:22:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:09,291 INFO L93 Difference]: Finished difference Result 487 states and 489 transitions. [2018-07-25 13:22:09,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:22:09,291 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 290 [2018-07-25 13:22:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:09,291 INFO L225 Difference]: With dead ends: 487 [2018-07-25 13:22:09,292 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 13:22:09,296 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13585 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19009, Invalid=64801, Unknown=0, NotChecked=0, Total=83810 [2018-07-25 13:22:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 13:22:09,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2018-07-25 13:22:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-07-25 13:22:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 293 transitions. [2018-07-25 13:22:09,336 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 293 transitions. Word has length 290 [2018-07-25 13:22:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:09,336 INFO L472 AbstractCegarLoop]: Abstraction has 292 states and 293 transitions. [2018-07-25 13:22:09,336 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 13:22:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 293 transitions. [2018-07-25 13:22:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-25 13:22:09,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:09,337 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 1, 1, 1, 1] [2018-07-25 13:22:09,337 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:09,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2030014957, now seen corresponding path program 190 times [2018-07-25 13:22:09,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13776 backedges. 4656 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:09,884 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:09,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:22:09,884 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:22:09,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:22:09,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:22:09,886 INFO L87 Difference]: Start difference. First operand 292 states and 293 transitions. Second operand 100 states. [2018-07-25 13:22:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:10,308 INFO L93 Difference]: Finished difference Result 300 states and 301 transitions. [2018-07-25 13:22:10,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:22:10,308 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 291 [2018-07-25 13:22:10,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:10,309 INFO L225 Difference]: With dead ends: 300 [2018-07-25 13:22:10,309 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 13:22:10,311 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9312 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:22:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 13:22:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2018-07-25 13:22:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-07-25 13:22:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 295 transitions. [2018-07-25 13:22:10,351 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 295 transitions. Word has length 291 [2018-07-25 13:22:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:10,352 INFO L472 AbstractCegarLoop]: Abstraction has 294 states and 295 transitions. [2018-07-25 13:22:10,352 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:22:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 295 transitions. [2018-07-25 13:22:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-25 13:22:10,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:10,353 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 96, 1, 1, 1, 1] [2018-07-25 13:22:10,353 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash -929155269, now seen corresponding path program 191 times [2018-07-25 13:22:10,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13968 backedges. 9312 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:11,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:11,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:22:11,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:22:11,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:22:11,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:22:11,214 INFO L87 Difference]: Start difference. First operand 294 states and 295 transitions. Second operand 196 states. [2018-07-25 13:22:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:13,753 INFO L93 Difference]: Finished difference Result 492 states and 494 transitions. [2018-07-25 13:22:13,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:22:13,753 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 293 [2018-07-25 13:22:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:13,754 INFO L225 Difference]: With dead ends: 492 [2018-07-25 13:22:13,754 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 13:22:13,758 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13872 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19401, Invalid=66155, Unknown=0, NotChecked=0, Total=85556 [2018-07-25 13:22:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 13:22:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 13:22:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 13:22:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 13:22:13,798 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 293 [2018-07-25 13:22:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:13,798 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 13:22:13,798 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:22:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 13:22:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 13:22:13,799 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:13,799 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 96, 1, 1, 1, 1] [2018-07-25 13:22:13,799 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:13,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1447088994, now seen corresponding path program 192 times [2018-07-25 13:22:13,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 14065 backedges. 4753 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:14,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:14,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:22:14,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:22:14,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:22:14,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:22:14,346 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 101 states. [2018-07-25 13:22:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:14,787 INFO L93 Difference]: Finished difference Result 303 states and 304 transitions. [2018-07-25 13:22:14,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:22:14,787 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 294 [2018-07-25 13:22:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:14,788 INFO L225 Difference]: With dead ends: 303 [2018-07-25 13:22:14,788 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 13:22:14,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:22:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 13:22:14,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 297. [2018-07-25 13:22:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 13:22:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 13:22:14,831 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 13:22:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:14,831 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 13:22:14,831 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:22:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 13:22:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 13:22:14,832 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:14,832 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 97, 1, 1, 1, 1] [2018-07-25 13:22:14,832 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:14,832 INFO L82 PathProgramCache]: Analyzing trace with hash -916814646, now seen corresponding path program 193 times [2018-07-25 13:22:14,832 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14259 backedges. 9506 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:15,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:15,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 13:22:15,760 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 13:22:15,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 13:22:15,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9899, Invalid=29107, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:22:15,762 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 198 states. [2018-07-25 13:22:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:18,284 INFO L93 Difference]: Finished difference Result 497 states and 499 transitions. [2018-07-25 13:22:18,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:22:18,284 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 296 [2018-07-25 13:22:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:18,285 INFO L225 Difference]: With dead ends: 497 [2018-07-25 13:22:18,285 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 13:22:18,289 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14162 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19797, Invalid=67523, Unknown=0, NotChecked=0, Total=87320 [2018-07-25 13:22:18,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 13:22:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2018-07-25 13:22:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-07-25 13:22:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 299 transitions. [2018-07-25 13:22:18,329 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 299 transitions. Word has length 296 [2018-07-25 13:22:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:18,329 INFO L472 AbstractCegarLoop]: Abstraction has 298 states and 299 transitions. [2018-07-25 13:22:18,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 13:22:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 299 transitions. [2018-07-25 13:22:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-25 13:22:18,330 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:18,330 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 1, 1, 1, 1] [2018-07-25 13:22:18,330 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash 125051715, now seen corresponding path program 194 times [2018-07-25 13:22:18,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14357 backedges. 4851 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:18,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:18,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:22:18,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:22:18,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:22:18,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:22:18,838 INFO L87 Difference]: Start difference. First operand 298 states and 299 transitions. Second operand 102 states. [2018-07-25 13:22:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:19,248 INFO L93 Difference]: Finished difference Result 306 states and 307 transitions. [2018-07-25 13:22:19,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:22:19,248 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 297 [2018-07-25 13:22:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:19,249 INFO L225 Difference]: With dead ends: 306 [2018-07-25 13:22:19,249 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 13:22:19,251 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9702 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:22:19,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 13:22:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 300. [2018-07-25 13:22:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-07-25 13:22:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 301 transitions. [2018-07-25 13:22:19,286 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 301 transitions. Word has length 297 [2018-07-25 13:22:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:19,286 INFO L472 AbstractCegarLoop]: Abstraction has 300 states and 301 transitions. [2018-07-25 13:22:19,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:22:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 301 transitions. [2018-07-25 13:22:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-25 13:22:19,287 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:19,287 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 98, 1, 1, 1, 1] [2018-07-25 13:22:19,287 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash -84320149, now seen corresponding path program 195 times [2018-07-25 13:22:19,288 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 14553 backedges. 9702 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:20,133 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:20,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:22:20,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:22:20,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:22:20,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:22:20,135 INFO L87 Difference]: Start difference. First operand 300 states and 301 transitions. Second operand 200 states. [2018-07-25 13:22:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:22,322 INFO L93 Difference]: Finished difference Result 502 states and 504 transitions. [2018-07-25 13:22:22,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:22:22,322 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 299 [2018-07-25 13:22:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:22,323 INFO L225 Difference]: With dead ends: 502 [2018-07-25 13:22:22,323 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 13:22:22,326 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20197, Invalid=68905, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 13:22:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 13:22:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 13:22:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 13:22:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 13:22:22,361 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 299 [2018-07-25 13:22:22,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:22,362 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 13:22:22,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:22:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 13:22:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 13:22:22,362 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:22,363 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 98, 1, 1, 1, 1] [2018-07-25 13:22:22,363 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:22,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1572207790, now seen corresponding path program 196 times [2018-07-25 13:22:22,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14652 backedges. 4950 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:22,868 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:22,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:22:22,868 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:22:22,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:22:22,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:22:22,869 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 103 states. [2018-07-25 13:22:23,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:23,244 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-07-25 13:22:23,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:22:23,244 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 300 [2018-07-25 13:22:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:23,245 INFO L225 Difference]: With dead ends: 309 [2018-07-25 13:22:23,245 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 13:22:23,246 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9900 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:22:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 13:22:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2018-07-25 13:22:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 13:22:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 13:22:23,282 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 13:22:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:23,283 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 13:22:23,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:22:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 13:22:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 13:22:23,284 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:23,284 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 99, 1, 1, 1, 1] [2018-07-25 13:22:23,284 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:23,284 INFO L82 PathProgramCache]: Analyzing trace with hash 936868026, now seen corresponding path program 197 times [2018-07-25 13:22:23,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14850 backedges. 9900 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:24,140 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:24,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 13:22:24,140 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 13:22:24,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 13:22:24,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10301, Invalid=30301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:22:24,142 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 202 states. [2018-07-25 13:22:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:26,835 INFO L93 Difference]: Finished difference Result 507 states and 509 transitions. [2018-07-25 13:22:26,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:22:26,835 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 302 [2018-07-25 13:22:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:26,836 INFO L225 Difference]: With dead ends: 507 [2018-07-25 13:22:26,836 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 13:22:26,840 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14751 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20601, Invalid=70301, Unknown=0, NotChecked=0, Total=90902 [2018-07-25 13:22:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 13:22:26,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2018-07-25 13:22:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-07-25 13:22:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2018-07-25 13:22:26,882 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 302 [2018-07-25 13:22:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:26,882 INFO L472 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2018-07-25 13:22:26,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 13:22:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2018-07-25 13:22:26,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-25 13:22:26,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:26,883 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 1, 1, 1, 1] [2018-07-25 13:22:26,883 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:26,884 INFO L82 PathProgramCache]: Analyzing trace with hash -661350285, now seen corresponding path program 198 times [2018-07-25 13:22:26,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14950 backedges. 5050 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:27,467 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:27,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:22:27,468 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:22:27,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:22:27,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:22:27,469 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand 104 states. [2018-07-25 13:22:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:27,918 INFO L93 Difference]: Finished difference Result 312 states and 313 transitions. [2018-07-25 13:22:27,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:22:27,918 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 303 [2018-07-25 13:22:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:27,919 INFO L225 Difference]: With dead ends: 312 [2018-07-25 13:22:27,919 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 13:22:27,922 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:22:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 13:22:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2018-07-25 13:22:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-07-25 13:22:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 307 transitions. [2018-07-25 13:22:27,964 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 307 transitions. Word has length 303 [2018-07-25 13:22:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:27,964 INFO L472 AbstractCegarLoop]: Abstraction has 306 states and 307 transitions. [2018-07-25 13:22:27,964 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:22:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 307 transitions. [2018-07-25 13:22:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-25 13:22:27,965 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:27,965 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 100, 1, 1, 1, 1] [2018-07-25 13:22:27,966 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:27,966 INFO L82 PathProgramCache]: Analyzing trace with hash 97601947, now seen corresponding path program 199 times [2018-07-25 13:22:27,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 10100 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:28,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:28,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:22:28,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:22:28,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:22:28,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:22:28,873 INFO L87 Difference]: Start difference. First operand 306 states and 307 transitions. Second operand 204 states. [2018-07-25 13:22:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:31,591 INFO L93 Difference]: Finished difference Result 512 states and 514 transitions. [2018-07-25 13:22:31,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:22:31,591 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 305 [2018-07-25 13:22:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:31,592 INFO L225 Difference]: With dead ends: 512 [2018-07-25 13:22:31,592 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 13:22:31,596 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21009, Invalid=71711, Unknown=0, NotChecked=0, Total=92720 [2018-07-25 13:22:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 13:22:31,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 13:22:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 13:22:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 13:22:31,634 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 305 [2018-07-25 13:22:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:31,634 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 13:22:31,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:22:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 13:22:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 13:22:31,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:31,635 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 100, 1, 1, 1, 1] [2018-07-25 13:22:31,636 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:31,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1583342402, now seen corresponding path program 200 times [2018-07-25 13:22:31,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15251 backedges. 5151 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:32,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:32,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:22:32,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:22:32,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:22:32,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:22:32,154 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 105 states. [2018-07-25 13:22:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:32,550 INFO L93 Difference]: Finished difference Result 315 states and 316 transitions. [2018-07-25 13:22:32,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:22:32,550 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 306 [2018-07-25 13:22:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:32,551 INFO L225 Difference]: With dead ends: 315 [2018-07-25 13:22:32,551 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 13:22:32,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10302 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:22:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 13:22:32,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2018-07-25 13:22:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 13:22:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 13:22:32,590 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 13:22:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:32,590 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 13:22:32,590 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:22:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 13:22:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 13:22:32,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:32,591 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 101, 1, 1, 1, 1] [2018-07-25 13:22:32,591 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1173691562, now seen corresponding path program 201 times [2018-07-25 13:22:32,591 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 10302 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:33,505 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:33,505 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 13:22:33,505 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 13:22:33,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 13:22:33,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10711, Invalid=31519, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:22:33,507 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 206 states. [2018-07-25 13:22:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:35,854 INFO L93 Difference]: Finished difference Result 517 states and 519 transitions. [2018-07-25 13:22:35,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:22:35,854 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 308 [2018-07-25 13:22:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:35,855 INFO L225 Difference]: With dead ends: 517 [2018-07-25 13:22:35,855 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 13:22:35,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15352 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21421, Invalid=73135, Unknown=0, NotChecked=0, Total=94556 [2018-07-25 13:22:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 13:22:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2018-07-25 13:22:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-07-25 13:22:35,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 311 transitions. [2018-07-25 13:22:35,895 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 311 transitions. Word has length 308 [2018-07-25 13:22:35,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:35,895 INFO L472 AbstractCegarLoop]: Abstraction has 310 states and 311 transitions. [2018-07-25 13:22:35,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 13:22:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 311 transitions. [2018-07-25 13:22:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-25 13:22:35,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:35,896 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 1, 1, 1, 1] [2018-07-25 13:22:35,897 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:35,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1065366109, now seen corresponding path program 202 times [2018-07-25 13:22:35,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 15555 backedges. 5253 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:36,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:36,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:22:36,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:22:36,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:22:36,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:22:36,432 INFO L87 Difference]: Start difference. First operand 310 states and 311 transitions. Second operand 106 states. [2018-07-25 13:22:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:36,834 INFO L93 Difference]: Finished difference Result 318 states and 319 transitions. [2018-07-25 13:22:36,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:22:36,834 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 309 [2018-07-25 13:22:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:36,835 INFO L225 Difference]: With dead ends: 318 [2018-07-25 13:22:36,835 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 13:22:36,837 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10506 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:22:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 13:22:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2018-07-25 13:22:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-07-25 13:22:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2018-07-25 13:22:36,875 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 309 [2018-07-25 13:22:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:36,876 INFO L472 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2018-07-25 13:22:36,876 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:22:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2018-07-25 13:22:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-07-25 13:22:36,877 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:36,877 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 102, 1, 1, 1, 1] [2018-07-25 13:22:36,877 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:36,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1614548277, now seen corresponding path program 203 times [2018-07-25 13:22:36,877 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15759 backedges. 10506 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:37,812 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:37,812 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:22:37,812 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:22:37,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:22:37,814 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:22:37,815 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand 208 states. [2018-07-25 13:22:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:40,241 INFO L93 Difference]: Finished difference Result 522 states and 524 transitions. [2018-07-25 13:22:40,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:22:40,242 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 311 [2018-07-25 13:22:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:40,242 INFO L225 Difference]: With dead ends: 522 [2018-07-25 13:22:40,242 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 13:22:40,246 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21837, Invalid=74573, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 13:22:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 13:22:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 13:22:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 13:22:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 13:22:40,285 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 311 [2018-07-25 13:22:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:40,285 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 13:22:40,285 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:22:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 13:22:40,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 13:22:40,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:40,286 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 102, 1, 1, 1, 1] [2018-07-25 13:22:40,286 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:40,286 INFO L82 PathProgramCache]: Analyzing trace with hash -244550862, now seen corresponding path program 204 times [2018-07-25 13:22:40,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15862 backedges. 5356 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:40,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:40,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:22:40,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:22:40,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:22:40,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:22:40,877 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 107 states. [2018-07-25 13:22:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:41,318 INFO L93 Difference]: Finished difference Result 321 states and 322 transitions. [2018-07-25 13:22:41,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:22:41,319 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 312 [2018-07-25 13:22:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:41,319 INFO L225 Difference]: With dead ends: 321 [2018-07-25 13:22:41,319 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 13:22:41,321 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10712 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:22:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 13:22:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-07-25 13:22:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 13:22:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 13:22:41,360 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 13:22:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:41,360 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 13:22:41,360 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:22:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 13:22:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 13:22:41,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:41,361 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 103, 1, 1, 1, 1] [2018-07-25 13:22:41,361 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:41,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1209888922, now seen corresponding path program 205 times [2018-07-25 13:22:41,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16068 backedges. 10712 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:42,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:42,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 13:22:42,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 13:22:42,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 13:22:42,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11129, Invalid=32761, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:22:42,295 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 210 states. [2018-07-25 13:22:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:44,738 INFO L93 Difference]: Finished difference Result 527 states and 529 transitions. [2018-07-25 13:22:44,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:22:44,738 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 314 [2018-07-25 13:22:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:44,739 INFO L225 Difference]: With dead ends: 527 [2018-07-25 13:22:44,739 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 13:22:44,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15965 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22257, Invalid=76025, Unknown=0, NotChecked=0, Total=98282 [2018-07-25 13:22:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 13:22:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-07-25 13:22:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-07-25 13:22:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 317 transitions. [2018-07-25 13:22:44,781 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 317 transitions. Word has length 314 [2018-07-25 13:22:44,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:44,782 INFO L472 AbstractCegarLoop]: Abstraction has 316 states and 317 transitions. [2018-07-25 13:22:44,782 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 13:22:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 317 transitions. [2018-07-25 13:22:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-07-25 13:22:44,782 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:44,783 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 1, 1, 1, 1] [2018-07-25 13:22:44,783 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:44,783 INFO L82 PathProgramCache]: Analyzing trace with hash -271334701, now seen corresponding path program 206 times [2018-07-25 13:22:44,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16172 backedges. 5460 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:45,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:45,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:22:45,336 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:22:45,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:22:45,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:22:45,337 INFO L87 Difference]: Start difference. First operand 316 states and 317 transitions. Second operand 108 states. [2018-07-25 13:22:45,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:45,806 INFO L93 Difference]: Finished difference Result 324 states and 325 transitions. [2018-07-25 13:22:45,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:22:45,807 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 315 [2018-07-25 13:22:45,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:45,807 INFO L225 Difference]: With dead ends: 324 [2018-07-25 13:22:45,807 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 13:22:45,809 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10920 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:22:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 13:22:45,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 318. [2018-07-25 13:22:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-07-25 13:22:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 319 transitions. [2018-07-25 13:22:45,849 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 319 transitions. Word has length 315 [2018-07-25 13:22:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:45,849 INFO L472 AbstractCegarLoop]: Abstraction has 318 states and 319 transitions. [2018-07-25 13:22:45,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:22:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 319 transitions. [2018-07-25 13:22:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-25 13:22:45,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:45,850 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 104, 1, 1, 1, 1] [2018-07-25 13:22:45,850 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:45,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1240423419, now seen corresponding path program 207 times [2018-07-25 13:22:45,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 10920 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:46,807 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:46,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:22:46,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:22:46,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:22:46,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:22:46,810 INFO L87 Difference]: Start difference. First operand 318 states and 319 transitions. Second operand 212 states. [2018-07-25 13:22:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:48,640 INFO L93 Difference]: Finished difference Result 532 states and 534 transitions. [2018-07-25 13:22:48,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:22:48,640 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 317 [2018-07-25 13:22:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:48,640 INFO L225 Difference]: With dead ends: 532 [2018-07-25 13:22:48,641 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 13:22:48,644 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22681, Invalid=77491, Unknown=0, NotChecked=0, Total=100172 [2018-07-25 13:22:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 13:22:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 13:22:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 13:22:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 13:22:48,685 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 317 [2018-07-25 13:22:48,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:48,685 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 13:22:48,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:22:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 13:22:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 13:22:48,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:48,686 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 104, 1, 1, 1, 1] [2018-07-25 13:22:48,686 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash 601469730, now seen corresponding path program 208 times [2018-07-25 13:22:48,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16485 backedges. 5565 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:49,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:49,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:22:49,266 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:22:49,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:22:49,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:22:49,267 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 109 states. [2018-07-25 13:22:49,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:49,727 INFO L93 Difference]: Finished difference Result 327 states and 328 transitions. [2018-07-25 13:22:49,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:22:49,727 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 318 [2018-07-25 13:22:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:49,728 INFO L225 Difference]: With dead ends: 327 [2018-07-25 13:22:49,728 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 13:22:49,730 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:22:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 13:22:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2018-07-25 13:22:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 13:22:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 13:22:49,771 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-25 13:22:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:49,772 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 13:22:49,772 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:22:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 13:22:49,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 13:22:49,773 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:49,773 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 105, 1, 1, 1, 1] [2018-07-25 13:22:49,773 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:49,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1808108406, now seen corresponding path program 209 times [2018-07-25 13:22:49,774 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16695 backedges. 11130 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:50,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:50,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 13:22:50,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 13:22:50,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 13:22:50,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11555, Invalid=34027, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:22:50,797 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 214 states. [2018-07-25 13:22:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:53,012 INFO L93 Difference]: Finished difference Result 537 states and 539 transitions. [2018-07-25 13:22:53,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:22:53,012 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 320 [2018-07-25 13:22:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:53,012 INFO L225 Difference]: With dead ends: 537 [2018-07-25 13:22:53,012 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 13:22:53,018 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16590 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23109, Invalid=78971, Unknown=0, NotChecked=0, Total=102080 [2018-07-25 13:22:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 13:22:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-07-25 13:22:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 13:22:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 323 transitions. [2018-07-25 13:22:53,065 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 323 transitions. Word has length 320 [2018-07-25 13:22:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:53,066 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 323 transitions. [2018-07-25 13:22:53,066 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 13:22:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 323 transitions. [2018-07-25 13:22:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-25 13:22:53,067 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:53,067 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 1, 1, 1, 1] [2018-07-25 13:22:53,067 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:53,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1582401533, now seen corresponding path program 210 times [2018-07-25 13:22:53,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16801 backedges. 5671 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:53,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:53,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:22:53,748 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:22:53,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:22:53,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:22:53,749 INFO L87 Difference]: Start difference. First operand 322 states and 323 transitions. Second operand 110 states. [2018-07-25 13:22:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:54,297 INFO L93 Difference]: Finished difference Result 330 states and 331 transitions. [2018-07-25 13:22:54,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 13:22:54,297 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 321 [2018-07-25 13:22:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:54,298 INFO L225 Difference]: With dead ends: 330 [2018-07-25 13:22:54,298 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 13:22:54,300 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 13:22:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 13:22:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2018-07-25 13:22:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-07-25 13:22:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 325 transitions. [2018-07-25 13:22:54,347 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 325 transitions. Word has length 321 [2018-07-25 13:22:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:54,347 INFO L472 AbstractCegarLoop]: Abstraction has 324 states and 325 transitions. [2018-07-25 13:22:54,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:22:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 325 transitions. [2018-07-25 13:22:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-25 13:22:54,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:54,348 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 106, 1, 1, 1, 1] [2018-07-25 13:22:54,348 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:54,348 INFO L82 PathProgramCache]: Analyzing trace with hash -269384405, now seen corresponding path program 211 times [2018-07-25 13:22:54,348 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 17013 backedges. 11342 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:55,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:55,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 13:22:55,430 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 13:22:55,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 13:22:55,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11771, Invalid=34669, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:22:55,434 INFO L87 Difference]: Start difference. First operand 324 states and 325 transitions. Second operand 216 states. [2018-07-25 13:22:57,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:57,769 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2018-07-25 13:22:57,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 13:22:57,769 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 323 [2018-07-25 13:22:57,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:57,770 INFO L225 Difference]: With dead ends: 542 [2018-07-25 13:22:57,770 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 13:22:57,776 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16907 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23541, Invalid=80465, Unknown=0, NotChecked=0, Total=104006 [2018-07-25 13:22:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 13:22:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 13:22:57,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 13:22:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 13:22:57,824 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 323 [2018-07-25 13:22:57,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:57,824 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 13:22:57,824 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 13:22:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 13:22:57,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 13:22:57,825 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:57,825 INFO L354 BasicCegarLoop]: trace histogram [107, 107, 106, 1, 1, 1, 1] [2018-07-25 13:22:57,826 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:57,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2140250898, now seen corresponding path program 212 times [2018-07-25 13:22:57,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:22:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 17120 backedges. 5778 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:22:58,611 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:22:58,611 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:22:58,611 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:22:58,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:22:58,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:22:58,612 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 111 states. [2018-07-25 13:22:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:22:59,119 INFO L93 Difference]: Finished difference Result 333 states and 334 transitions. [2018-07-25 13:22:59,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 13:22:59,119 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 324 [2018-07-25 13:22:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:22:59,120 INFO L225 Difference]: With dead ends: 333 [2018-07-25 13:22:59,120 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 13:22:59,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11556 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 13:22:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 13:22:59,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2018-07-25 13:22:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 13:22:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 13:22:59,170 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-25 13:22:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:22:59,170 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 13:22:59,171 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:22:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 13:22:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 13:22:59,171 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:22:59,172 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 107, 1, 1, 1, 1] [2018-07-25 13:22:59,172 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:22:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -508155782, now seen corresponding path program 213 times [2018-07-25 13:22:59,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:22:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17334 backedges. 11556 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:00,293 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:00,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 13:23:00,294 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 13:23:00,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 13:23:00,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11989, Invalid=35317, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:23:00,298 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 218 states. [2018-07-25 13:23:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:01,488 INFO L93 Difference]: Finished difference Result 547 states and 549 transitions. [2018-07-25 13:23:01,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 13:23:01,488 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 326 [2018-07-25 13:23:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:01,488 INFO L225 Difference]: With dead ends: 547 [2018-07-25 13:23:01,488 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 13:23:01,493 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17227 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23977, Invalid=81973, Unknown=0, NotChecked=0, Total=105950 [2018-07-25 13:23:01,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 13:23:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-07-25 13:23:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-07-25 13:23:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2018-07-25 13:23:01,535 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 326 [2018-07-25 13:23:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:01,535 INFO L472 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2018-07-25 13:23:01,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 13:23:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2018-07-25 13:23:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-25 13:23:01,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:01,536 INFO L354 BasicCegarLoop]: trace histogram [108, 108, 107, 1, 1, 1, 1] [2018-07-25 13:23:01,536 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:01,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1146229453, now seen corresponding path program 214 times [2018-07-25 13:23:01,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 17442 backedges. 5886 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:02,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:02,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:23:02,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:23:02,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:23:02,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:23:02,216 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand 112 states. [2018-07-25 13:23:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:02,676 INFO L93 Difference]: Finished difference Result 336 states and 337 transitions. [2018-07-25 13:23:02,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 13:23:02,676 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 327 [2018-07-25 13:23:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:02,677 INFO L225 Difference]: With dead ends: 336 [2018-07-25 13:23:02,677 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 13:23:02,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11772 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:23:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 13:23:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2018-07-25 13:23:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-07-25 13:23:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 331 transitions. [2018-07-25 13:23:02,721 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 331 transitions. Word has length 327 [2018-07-25 13:23:02,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:02,721 INFO L472 AbstractCegarLoop]: Abstraction has 330 states and 331 transitions. [2018-07-25 13:23:02,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:23:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 331 transitions. [2018-07-25 13:23:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-25 13:23:02,722 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:02,722 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 108, 1, 1, 1, 1] [2018-07-25 13:23:02,722 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:02,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2014810533, now seen corresponding path program 215 times [2018-07-25 13:23:02,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17658 backedges. 11772 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:03,701 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:03,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 13:23:03,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 13:23:03,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 13:23:03,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12209, Invalid=35971, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 13:23:03,705 INFO L87 Difference]: Start difference. First operand 330 states and 331 transitions. Second operand 220 states. [2018-07-25 13:23:05,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:05,738 INFO L93 Difference]: Finished difference Result 552 states and 554 transitions. [2018-07-25 13:23:05,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 13:23:05,739 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 329 [2018-07-25 13:23:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:05,739 INFO L225 Difference]: With dead ends: 552 [2018-07-25 13:23:05,739 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 13:23:05,744 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17550 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24417, Invalid=83495, Unknown=0, NotChecked=0, Total=107912 [2018-07-25 13:23:05,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 13:23:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 13:23:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 13:23:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 13:23:05,787 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 329 [2018-07-25 13:23:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:05,787 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 13:23:05,787 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 13:23:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 13:23:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 13:23:05,788 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:05,788 INFO L354 BasicCegarLoop]: trace histogram [109, 109, 108, 1, 1, 1, 1] [2018-07-25 13:23:05,788 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:05,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1342291198, now seen corresponding path program 216 times [2018-07-25 13:23:05,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 17767 backedges. 5995 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:06,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:06,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 13:23:06,447 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 13:23:06,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 13:23:06,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:23:06,448 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 113 states. [2018-07-25 13:23:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:06,926 INFO L93 Difference]: Finished difference Result 339 states and 340 transitions. [2018-07-25 13:23:06,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 13:23:06,926 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 330 [2018-07-25 13:23:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:06,927 INFO L225 Difference]: With dead ends: 339 [2018-07-25 13:23:06,927 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 13:23:06,929 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11990 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 13:23:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 13:23:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 333. [2018-07-25 13:23:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 13:23:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 13:23:06,972 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 13:23:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:06,973 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 13:23:06,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 13:23:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 13:23:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 13:23:06,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:06,974 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 109, 1, 1, 1, 1] [2018-07-25 13:23:06,974 INFO L415 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:06,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1451586454, now seen corresponding path program 217 times [2018-07-25 13:23:06,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 17985 backedges. 11990 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:08,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:08,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 13:23:08,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 13:23:08,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 13:23:08,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12431, Invalid=36631, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 13:23:08,014 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 222 states. [2018-07-25 13:23:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:09,606 INFO L93 Difference]: Finished difference Result 557 states and 559 transitions. [2018-07-25 13:23:09,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 13:23:09,606 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 332 [2018-07-25 13:23:09,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:09,606 INFO L225 Difference]: With dead ends: 557 [2018-07-25 13:23:09,606 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 13:23:09,609 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17876 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=24861, Invalid=85031, Unknown=0, NotChecked=0, Total=109892 [2018-07-25 13:23:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 13:23:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2018-07-25 13:23:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-07-25 13:23:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 335 transitions. [2018-07-25 13:23:09,652 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 335 transitions. Word has length 332 [2018-07-25 13:23:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:09,652 INFO L472 AbstractCegarLoop]: Abstraction has 334 states and 335 transitions. [2018-07-25 13:23:09,652 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 13:23:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 335 transitions. [2018-07-25 13:23:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-25 13:23:09,653 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:09,653 INFO L354 BasicCegarLoop]: trace histogram [110, 110, 109, 1, 1, 1, 1] [2018-07-25 13:23:09,653 INFO L415 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:09,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1844453987, now seen corresponding path program 218 times [2018-07-25 13:23:09,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18095 backedges. 6105 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:10,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:10,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:23:10,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:23:10,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:23:10,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:23:10,320 INFO L87 Difference]: Start difference. First operand 334 states and 335 transitions. Second operand 114 states. [2018-07-25 13:23:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:10,802 INFO L93 Difference]: Finished difference Result 342 states and 343 transitions. [2018-07-25 13:23:10,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 13:23:10,802 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 333 [2018-07-25 13:23:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:10,803 INFO L225 Difference]: With dead ends: 342 [2018-07-25 13:23:10,803 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 13:23:10,806 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 13:23:10,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 13:23:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2018-07-25 13:23:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-07-25 13:23:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2018-07-25 13:23:10,850 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 333 [2018-07-25 13:23:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:10,851 INFO L472 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2018-07-25 13:23:10,851 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:23:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2018-07-25 13:23:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-25 13:23:10,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:10,852 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 110, 1, 1, 1, 1] [2018-07-25 13:23:10,852 INFO L415 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:10,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1301145717, now seen corresponding path program 219 times [2018-07-25 13:23:10,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18315 backedges. 12210 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:11,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:11,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 13:23:11,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 13:23:11,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 13:23:11,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12655, Invalid=37297, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 13:23:11,907 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand 224 states. [2018-07-25 13:23:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:13,953 INFO L93 Difference]: Finished difference Result 562 states and 564 transitions. [2018-07-25 13:23:13,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 13:23:13,953 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 335 [2018-07-25 13:23:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:13,954 INFO L225 Difference]: With dead ends: 562 [2018-07-25 13:23:13,954 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 13:23:13,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18205 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25309, Invalid=86581, Unknown=0, NotChecked=0, Total=111890 [2018-07-25 13:23:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 13:23:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 13:23:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 13:23:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 13:23:14,001 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 335 [2018-07-25 13:23:14,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:14,001 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 13:23:14,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 13:23:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 13:23:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 13:23:14,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:14,002 INFO L354 BasicCegarLoop]: trace histogram [111, 111, 110, 1, 1, 1, 1] [2018-07-25 13:23:14,002 INFO L415 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:14,002 INFO L82 PathProgramCache]: Analyzing trace with hash -502689038, now seen corresponding path program 220 times [2018-07-25 13:23:14,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18426 backedges. 6216 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:14,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:14,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 13:23:14,668 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 13:23:14,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 13:23:14,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:23:14,669 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 115 states. [2018-07-25 13:23:15,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:15,169 INFO L93 Difference]: Finished difference Result 345 states and 346 transitions. [2018-07-25 13:23:15,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 13:23:15,170 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 336 [2018-07-25 13:23:15,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:15,170 INFO L225 Difference]: With dead ends: 345 [2018-07-25 13:23:15,170 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 13:23:15,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12432 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 13:23:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 13:23:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-07-25 13:23:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 13:23:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 13:23:15,217 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 13:23:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:15,217 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 13:23:15,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 13:23:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 13:23:15,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 13:23:15,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:15,218 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 111, 1, 1, 1, 1] [2018-07-25 13:23:15,219 INFO L415 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:15,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2047762342, now seen corresponding path program 221 times [2018-07-25 13:23:15,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18648 backedges. 12432 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:16,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:16,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 13:23:16,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 13:23:16,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 13:23:16,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12881, Invalid=37969, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 13:23:16,310 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 226 states. [2018-07-25 13:23:18,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:18,442 INFO L93 Difference]: Finished difference Result 567 states and 569 transitions. [2018-07-25 13:23:18,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 13:23:18,442 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 338 [2018-07-25 13:23:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:18,443 INFO L225 Difference]: With dead ends: 567 [2018-07-25 13:23:18,443 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 13:23:18,446 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18537 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25761, Invalid=88145, Unknown=0, NotChecked=0, Total=113906 [2018-07-25 13:23:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 13:23:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-25 13:23:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-25 13:23:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 341 transitions. [2018-07-25 13:23:18,491 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 341 transitions. Word has length 338 [2018-07-25 13:23:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:18,492 INFO L472 AbstractCegarLoop]: Abstraction has 340 states and 341 transitions. [2018-07-25 13:23:18,492 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 13:23:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 341 transitions. [2018-07-25 13:23:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-25 13:23:18,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:18,493 INFO L354 BasicCegarLoop]: trace histogram [112, 112, 111, 1, 1, 1, 1] [2018-07-25 13:23:18,493 INFO L415 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:18,493 INFO L82 PathProgramCache]: Analyzing trace with hash -753723501, now seen corresponding path program 222 times [2018-07-25 13:23:18,493 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 18760 backedges. 6328 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:19,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:19,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:23:19,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:23:19,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:23:19,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:23:19,195 INFO L87 Difference]: Start difference. First operand 340 states and 341 transitions. Second operand 116 states. [2018-07-25 13:23:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:19,687 INFO L93 Difference]: Finished difference Result 348 states and 349 transitions. [2018-07-25 13:23:19,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 13:23:19,687 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 339 [2018-07-25 13:23:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:19,688 INFO L225 Difference]: With dead ends: 348 [2018-07-25 13:23:19,688 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 13:23:19,690 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12656 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 13:23:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 13:23:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 342. [2018-07-25 13:23:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2018-07-25 13:23:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 343 transitions. [2018-07-25 13:23:19,735 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 343 transitions. Word has length 339 [2018-07-25 13:23:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:19,736 INFO L472 AbstractCegarLoop]: Abstraction has 342 states and 343 transitions. [2018-07-25 13:23:19,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:23:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 343 transitions. [2018-07-25 13:23:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-25 13:23:19,736 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:19,737 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 112, 1, 1, 1, 1] [2018-07-25 13:23:19,737 INFO L415 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1521254587, now seen corresponding path program 223 times [2018-07-25 13:23:19,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 18984 backedges. 12656 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:20,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:20,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 13:23:20,870 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 13:23:20,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 13:23:20,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13109, Invalid=38647, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 13:23:20,873 INFO L87 Difference]: Start difference. First operand 342 states and 343 transitions. Second operand 228 states. [2018-07-25 13:23:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:23,223 INFO L93 Difference]: Finished difference Result 572 states and 574 transitions. [2018-07-25 13:23:23,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 13:23:23,224 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 341 [2018-07-25 13:23:23,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:23,224 INFO L225 Difference]: With dead ends: 572 [2018-07-25 13:23:23,224 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 13:23:23,229 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18872 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=26217, Invalid=89723, Unknown=0, NotChecked=0, Total=115940 [2018-07-25 13:23:23,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 13:23:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 13:23:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 13:23:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 13:23:23,275 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 341 [2018-07-25 13:23:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:23,275 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 13:23:23,275 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 13:23:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 13:23:23,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 13:23:23,276 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:23,276 INFO L354 BasicCegarLoop]: trace histogram [113, 113, 112, 1, 1, 1, 1] [2018-07-25 13:23:23,276 INFO L415 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:23,276 INFO L82 PathProgramCache]: Analyzing trace with hash 605917922, now seen corresponding path program 224 times [2018-07-25 13:23:23,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 19097 backedges. 6441 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:23,985 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:23,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 13:23:23,985 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 13:23:23,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 13:23:23,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:23:23,986 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 117 states. [2018-07-25 13:23:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:24,487 INFO L93 Difference]: Finished difference Result 351 states and 352 transitions. [2018-07-25 13:23:24,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 13:23:24,487 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 342 [2018-07-25 13:23:24,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:24,488 INFO L225 Difference]: With dead ends: 351 [2018-07-25 13:23:24,488 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 13:23:24,490 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12882 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 13:23:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 13:23:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2018-07-25 13:23:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 13:23:24,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 13:23:24,536 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-25 13:23:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:24,536 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 13:23:24,536 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 13:23:24,537 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 13:23:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 13:23:24,537 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:24,537 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 113, 1, 1, 1, 1] [2018-07-25 13:23:24,538 INFO L415 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:24,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1828363190, now seen corresponding path program 225 times [2018-07-25 13:23:24,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 19323 backedges. 12882 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:25,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:25,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 13:23:25,648 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 13:23:25,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 13:23:25,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13339, Invalid=39331, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 13:23:25,651 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 230 states. [2018-07-25 13:23:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:27,461 INFO L93 Difference]: Finished difference Result 577 states and 579 transitions. [2018-07-25 13:23:27,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 13:23:27,461 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 344 [2018-07-25 13:23:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:27,462 INFO L225 Difference]: With dead ends: 577 [2018-07-25 13:23:27,462 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 13:23:27,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19210 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=26677, Invalid=91315, Unknown=0, NotChecked=0, Total=117992 [2018-07-25 13:23:27,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 13:23:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-07-25 13:23:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-07-25 13:23:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 347 transitions. [2018-07-25 13:23:27,514 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 347 transitions. Word has length 344 [2018-07-25 13:23:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:27,514 INFO L472 AbstractCegarLoop]: Abstraction has 346 states and 347 transitions. [2018-07-25 13:23:27,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 13:23:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 347 transitions. [2018-07-25 13:23:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-07-25 13:23:27,515 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:27,515 INFO L354 BasicCegarLoop]: trace histogram [114, 114, 113, 1, 1, 1, 1] [2018-07-25 13:23:27,515 INFO L415 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:27,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1875587901, now seen corresponding path program 226 times [2018-07-25 13:23:27,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19437 backedges. 6555 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:28,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:28,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:23:28,272 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:23:28,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:23:28,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:23:28,273 INFO L87 Difference]: Start difference. First operand 346 states and 347 transitions. Second operand 118 states. [2018-07-25 13:23:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:28,825 INFO L93 Difference]: Finished difference Result 354 states and 355 transitions. [2018-07-25 13:23:28,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 13:23:28,825 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 345 [2018-07-25 13:23:28,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:28,825 INFO L225 Difference]: With dead ends: 354 [2018-07-25 13:23:28,825 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 13:23:28,829 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 13:23:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 13:23:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 348. [2018-07-25 13:23:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-07-25 13:23:28,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 349 transitions. [2018-07-25 13:23:28,876 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 349 transitions. Word has length 345 [2018-07-25 13:23:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:28,876 INFO L472 AbstractCegarLoop]: Abstraction has 348 states and 349 transitions. [2018-07-25 13:23:28,876 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:23:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 349 transitions. [2018-07-25 13:23:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-25 13:23:28,877 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:28,877 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 114, 1, 1, 1, 1] [2018-07-25 13:23:28,877 INFO L415 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:28,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1446357483, now seen corresponding path program 227 times [2018-07-25 13:23:28,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19665 backedges. 13110 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:30,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:30,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 13:23:30,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 13:23:30,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 13:23:30,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13571, Invalid=40021, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 13:23:30,050 INFO L87 Difference]: Start difference. First operand 348 states and 349 transitions. Second operand 232 states. [2018-07-25 13:23:31,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:31,517 INFO L93 Difference]: Finished difference Result 582 states and 584 transitions. [2018-07-25 13:23:31,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 13:23:31,517 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 347 [2018-07-25 13:23:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:31,518 INFO L225 Difference]: With dead ends: 582 [2018-07-25 13:23:31,518 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 13:23:31,521 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19551 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=27141, Invalid=92921, Unknown=0, NotChecked=0, Total=120062 [2018-07-25 13:23:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 13:23:31,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 13:23:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 13:23:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 13:23:31,573 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 347 [2018-07-25 13:23:31,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:31,573 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 13:23:31,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-25 13:23:31,573 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 13:23:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 13:23:31,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:31,574 INFO L354 BasicCegarLoop]: trace histogram [115, 115, 114, 1, 1, 1, 1] [2018-07-25 13:23:31,575 INFO L415 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:31,575 INFO L82 PathProgramCache]: Analyzing trace with hash -970702126, now seen corresponding path program 228 times [2018-07-25 13:23:31,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19780 backedges. 6670 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:32,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:32,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 13:23:32,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 13:23:32,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 13:23:32,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:23:32,344 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 119 states. [2018-07-25 13:23:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:32,916 INFO L93 Difference]: Finished difference Result 357 states and 358 transitions. [2018-07-25 13:23:32,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 13:23:32,916 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 348 [2018-07-25 13:23:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:32,917 INFO L225 Difference]: With dead ends: 357 [2018-07-25 13:23:32,917 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 13:23:32,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 13:23:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 13:23:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2018-07-25 13:23:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 13:23:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 13:23:32,968 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-25 13:23:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:32,968 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 13:23:32,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 13:23:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 13:23:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 13:23:32,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:32,969 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 115, 1, 1, 1, 1] [2018-07-25 13:23:32,970 INFO L415 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -836773830, now seen corresponding path program 229 times [2018-07-25 13:23:32,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 20010 backedges. 13340 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:34,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:34,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-25 13:23:34,192 INFO L451 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-25 13:23:34,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-25 13:23:34,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13805, Invalid=40717, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 13:23:34,194 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 234 states. [2018-07-25 13:23:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:35,608 INFO L93 Difference]: Finished difference Result 587 states and 589 transitions. [2018-07-25 13:23:35,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 13:23:35,608 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 350 [2018-07-25 13:23:35,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:35,609 INFO L225 Difference]: With dead ends: 587 [2018-07-25 13:23:35,609 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 13:23:35,613 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19895 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=27609, Invalid=94541, Unknown=0, NotChecked=0, Total=122150 [2018-07-25 13:23:35,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 13:23:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2018-07-25 13:23:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-07-25 13:23:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2018-07-25 13:23:35,661 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 350 [2018-07-25 13:23:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:35,661 INFO L472 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2018-07-25 13:23:35,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-25 13:23:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2018-07-25 13:23:35,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-25 13:23:35,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:35,662 INFO L354 BasicCegarLoop]: trace histogram [116, 116, 115, 1, 1, 1, 1] [2018-07-25 13:23:35,662 INFO L415 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:35,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1962099187, now seen corresponding path program 230 times [2018-07-25 13:23:35,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 20126 backedges. 6786 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:36,404 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:36,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:23:36,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:23:36,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:23:36,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:23:36,406 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand 120 states. [2018-07-25 13:23:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:36,967 INFO L93 Difference]: Finished difference Result 360 states and 361 transitions. [2018-07-25 13:23:36,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 13:23:36,968 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 351 [2018-07-25 13:23:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:36,969 INFO L225 Difference]: With dead ends: 360 [2018-07-25 13:23:36,969 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 13:23:36,972 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13572 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 13:23:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 13:23:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2018-07-25 13:23:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 13:23:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 355 transitions. [2018-07-25 13:23:37,024 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 355 transitions. Word has length 351 [2018-07-25 13:23:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:37,025 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 355 transitions. [2018-07-25 13:23:37,025 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:23:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 355 transitions. [2018-07-25 13:23:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-25 13:23:37,026 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:37,026 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 116, 1, 1, 1, 1] [2018-07-25 13:23:37,026 INFO L415 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:37,026 INFO L82 PathProgramCache]: Analyzing trace with hash 86741787, now seen corresponding path program 231 times [2018-07-25 13:23:37,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 20358 backedges. 13572 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:38,266 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:38,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-25 13:23:38,267 INFO L451 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-25 13:23:38,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-25 13:23:38,270 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14041, Invalid=41419, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 13:23:38,270 INFO L87 Difference]: Start difference. First operand 354 states and 355 transitions. Second operand 236 states. [2018-07-25 13:23:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:40,082 INFO L93 Difference]: Finished difference Result 592 states and 594 transitions. [2018-07-25 13:23:40,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 13:23:40,082 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 353 [2018-07-25 13:23:40,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:40,083 INFO L225 Difference]: With dead ends: 592 [2018-07-25 13:23:40,083 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 13:23:40,088 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20242 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28081, Invalid=96175, Unknown=0, NotChecked=0, Total=124256 [2018-07-25 13:23:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 13:23:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 13:23:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 13:23:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 13:23:40,137 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 353 [2018-07-25 13:23:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:40,137 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 13:23:40,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-25 13:23:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 13:23:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 13:23:40,138 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:40,139 INFO L354 BasicCegarLoop]: trace histogram [117, 117, 116, 1, 1, 1, 1] [2018-07-25 13:23:40,139 INFO L415 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:40,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1182293310, now seen corresponding path program 232 times [2018-07-25 13:23:40,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 6903 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:40,862 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:40,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 13:23:40,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 13:23:40,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 13:23:40,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:23:40,863 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 121 states. [2018-07-25 13:23:41,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:41,440 INFO L93 Difference]: Finished difference Result 363 states and 364 transitions. [2018-07-25 13:23:41,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-25 13:23:41,441 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 354 [2018-07-25 13:23:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:41,441 INFO L225 Difference]: With dead ends: 363 [2018-07-25 13:23:41,441 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 13:23:41,443 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13806 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 13:23:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 13:23:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 357. [2018-07-25 13:23:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 13:23:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 13:23:41,492 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 13:23:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:41,493 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 13:23:41,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 13:23:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 13:23:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 13:23:41,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:41,494 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 117, 1, 1, 1, 1] [2018-07-25 13:23:41,494 INFO L415 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1982528554, now seen corresponding path program 233 times [2018-07-25 13:23:41,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 20709 backedges. 13806 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:42,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:42,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-25 13:23:42,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-25 13:23:42,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-25 13:23:42,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14279, Invalid=42127, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 13:23:42,770 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 238 states. [2018-07-25 13:23:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:45,371 INFO L93 Difference]: Finished difference Result 597 states and 599 transitions. [2018-07-25 13:23:45,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-25 13:23:45,371 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 356 [2018-07-25 13:23:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:45,372 INFO L225 Difference]: With dead ends: 597 [2018-07-25 13:23:45,372 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 13:23:45,377 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20592 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28557, Invalid=97823, Unknown=0, NotChecked=0, Total=126380 [2018-07-25 13:23:45,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 13:23:45,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2018-07-25 13:23:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-07-25 13:23:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 359 transitions. [2018-07-25 13:23:45,489 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 359 transitions. Word has length 356 [2018-07-25 13:23:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:45,489 INFO L472 AbstractCegarLoop]: Abstraction has 358 states and 359 transitions. [2018-07-25 13:23:45,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-07-25 13:23:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 359 transitions. [2018-07-25 13:23:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-07-25 13:23:45,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:45,490 INFO L354 BasicCegarLoop]: trace histogram [118, 118, 117, 1, 1, 1, 1] [2018-07-25 13:23:45,490 INFO L415 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash 460093219, now seen corresponding path program 234 times [2018-07-25 13:23:45,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 20827 backedges. 7021 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:46,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:46,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:23:46,280 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:23:46,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:23:46,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:23:46,281 INFO L87 Difference]: Start difference. First operand 358 states and 359 transitions. Second operand 122 states. [2018-07-25 13:23:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:46,833 INFO L93 Difference]: Finished difference Result 366 states and 367 transitions. [2018-07-25 13:23:46,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-25 13:23:46,834 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 357 [2018-07-25 13:23:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:46,834 INFO L225 Difference]: With dead ends: 366 [2018-07-25 13:23:46,834 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 13:23:46,836 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14042 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 13:23:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 13:23:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 360. [2018-07-25 13:23:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-07-25 13:23:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2018-07-25 13:23:46,887 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 357 [2018-07-25 13:23:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:46,887 INFO L472 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2018-07-25 13:23:46,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:23:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2018-07-25 13:23:46,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-25 13:23:46,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:46,888 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 118, 1, 1, 1, 1] [2018-07-25 13:23:46,889 INFO L415 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:46,889 INFO L82 PathProgramCache]: Analyzing trace with hash -231982005, now seen corresponding path program 235 times [2018-07-25 13:23:46,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 21063 backedges. 14042 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:48,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:48,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-25 13:23:48,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-25 13:23:48,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-25 13:23:48,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14519, Invalid=42841, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 13:23:48,136 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand 240 states. [2018-07-25 13:23:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:50,577 INFO L93 Difference]: Finished difference Result 602 states and 604 transitions. [2018-07-25 13:23:50,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-25 13:23:50,577 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 359 [2018-07-25 13:23:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:50,578 INFO L225 Difference]: With dead ends: 602 [2018-07-25 13:23:50,578 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 13:23:50,582 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20945 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29037, Invalid=99485, Unknown=0, NotChecked=0, Total=128522 [2018-07-25 13:23:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 13:23:50,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 13:23:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 13:23:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 13:23:50,634 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 359 [2018-07-25 13:23:50,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:50,634 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 13:23:50,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-25 13:23:50,634 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 13:23:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 13:23:50,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:50,635 INFO L354 BasicCegarLoop]: trace histogram [119, 119, 118, 1, 1, 1, 1] [2018-07-25 13:23:50,636 INFO L415 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash -248401230, now seen corresponding path program 236 times [2018-07-25 13:23:50,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 21182 backedges. 7140 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:51,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:51,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 13:23:51,435 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 13:23:51,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 13:23:51,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:23:51,437 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 123 states. [2018-07-25 13:23:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:52,042 INFO L93 Difference]: Finished difference Result 369 states and 370 transitions. [2018-07-25 13:23:52,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-25 13:23:52,043 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 360 [2018-07-25 13:23:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:52,043 INFO L225 Difference]: With dead ends: 369 [2018-07-25 13:23:52,044 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 13:23:52,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 13:23:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 13:23:52,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2018-07-25 13:23:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 13:23:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 13:23:52,105 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 13:23:52,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:52,105 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 13:23:52,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 13:23:52,105 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 13:23:52,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 13:23:52,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:52,106 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 119, 1, 1, 1, 1] [2018-07-25 13:23:52,107 INFO L415 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:52,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1804652570, now seen corresponding path program 237 times [2018-07-25 13:23:52,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21420 backedges. 14280 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:53,454 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:53,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241] total 241 [2018-07-25 13:23:53,454 INFO L451 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-07-25 13:23:53,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-07-25 13:23:53,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14761, Invalid=43561, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 13:23:53,458 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 242 states. [2018-07-25 13:23:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:56,059 INFO L93 Difference]: Finished difference Result 607 states and 609 transitions. [2018-07-25 13:23:56,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-25 13:23:56,059 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 362 [2018-07-25 13:23:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:56,060 INFO L225 Difference]: With dead ends: 607 [2018-07-25 13:23:56,060 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 13:23:56,066 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21301 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29521, Invalid=101161, Unknown=0, NotChecked=0, Total=130682 [2018-07-25 13:23:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 13:23:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2018-07-25 13:23:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 13:23:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 365 transitions. [2018-07-25 13:23:56,118 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 365 transitions. Word has length 362 [2018-07-25 13:23:56,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:56,118 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 365 transitions. [2018-07-25 13:23:56,118 INFO L473 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-07-25 13:23:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 365 transitions. [2018-07-25 13:23:56,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-07-25 13:23:56,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:56,119 INFO L354 BasicCegarLoop]: trace histogram [120, 120, 119, 1, 1, 1, 1] [2018-07-25 13:23:56,119 INFO L415 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2009174957, now seen corresponding path program 238 times [2018-07-25 13:23:56,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21540 backedges. 7260 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:57,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:57,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:23:57,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:23:57,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:23:57,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:23:57,021 INFO L87 Difference]: Start difference. First operand 364 states and 365 transitions. Second operand 124 states. [2018-07-25 13:23:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:23:57,609 INFO L93 Difference]: Finished difference Result 372 states and 373 transitions. [2018-07-25 13:23:57,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-07-25 13:23:57,610 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 363 [2018-07-25 13:23:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:23:57,610 INFO L225 Difference]: With dead ends: 372 [2018-07-25 13:23:57,610 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 13:23:57,612 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14520 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 13:23:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 13:23:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 366. [2018-07-25 13:23:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-07-25 13:23:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 367 transitions. [2018-07-25 13:23:57,664 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 367 transitions. Word has length 363 [2018-07-25 13:23:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:23:57,664 INFO L472 AbstractCegarLoop]: Abstraction has 366 states and 367 transitions. [2018-07-25 13:23:57,664 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:23:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 367 transitions. [2018-07-25 13:23:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-07-25 13:23:57,665 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:23:57,666 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 120, 1, 1, 1, 1] [2018-07-25 13:23:57,666 INFO L415 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:23:57,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1918215547, now seen corresponding path program 239 times [2018-07-25 13:23:57,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:23:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:23:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 21780 backedges. 14520 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:23:58,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:23:58,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-25 13:23:58,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-25 13:23:58,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-25 13:23:58,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15005, Invalid=44287, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 13:23:58,978 INFO L87 Difference]: Start difference. First operand 366 states and 367 transitions. Second operand 244 states. [2018-07-25 13:24:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:00,700 INFO L93 Difference]: Finished difference Result 612 states and 614 transitions. [2018-07-25 13:24:00,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-07-25 13:24:00,700 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 365 [2018-07-25 13:24:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:00,701 INFO L225 Difference]: With dead ends: 612 [2018-07-25 13:24:00,701 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 13:24:00,705 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21660 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30009, Invalid=102851, Unknown=0, NotChecked=0, Total=132860 [2018-07-25 13:24:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 13:24:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-25 13:24:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 13:24:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-25 13:24:00,758 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 365 [2018-07-25 13:24:00,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:00,758 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-25 13:24:00,758 INFO L473 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-25 13:24:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-25 13:24:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 13:24:00,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:00,760 INFO L354 BasicCegarLoop]: trace histogram [121, 121, 120, 1, 1, 1, 1] [2018-07-25 13:24:00,760 INFO L415 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1047760222, now seen corresponding path program 240 times [2018-07-25 13:24:00,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21901 backedges. 7381 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:01,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:01,616 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 13:24:01,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 13:24:01,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 13:24:01,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:24:01,617 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 125 states. [2018-07-25 13:24:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:02,238 INFO L93 Difference]: Finished difference Result 375 states and 376 transitions. [2018-07-25 13:24:02,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-07-25 13:24:02,238 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 366 [2018-07-25 13:24:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:02,239 INFO L225 Difference]: With dead ends: 375 [2018-07-25 13:24:02,239 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 13:24:02,241 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14762 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 13:24:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 13:24:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2018-07-25 13:24:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 13:24:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-25 13:24:02,300 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 366 [2018-07-25 13:24:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:02,300 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-25 13:24:02,300 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 13:24:02,300 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-25 13:24:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 13:24:02,301 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:02,301 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 121, 1, 1, 1, 1] [2018-07-25 13:24:02,302 INFO L415 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1875160054, now seen corresponding path program 241 times [2018-07-25 13:24:02,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 13:24:03,220 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:24:03,224 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:24:03,224 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:24:03 BoogieIcfgContainer [2018-07-25 13:24:03,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:24:03,225 INFO L168 Benchmark]: Toolchain (without parser) took 253956.62 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 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 13:24:03,227 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:24:03,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:24:03,228 INFO L168 Benchmark]: Boogie Preprocessor took 21.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:24:03,228 INFO L168 Benchmark]: RCFGBuilder took 237.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:24:03,228 INFO L168 Benchmark]: TraceAbstraction took 253652.73 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 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 13:24:03,230 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 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.25 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 237.30 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 253652.73 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 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 76). Cancelled while BasicCegarLoop was analyzing trace of length 369 with TraceHistMax 122, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 177 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 253.5s OverallTime, 243 OverallIterations, 122 TraceHistogramMax, 149.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 849 SDtfs, 3950 SDslu, 8529 SDs, 0 SdLazy, 542385 SolverSat, 27145 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44770 GetRequests, 7502 SyntacticMatches, 0 SemanticMatches, 37268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1483702 ImplicationChecksByTransitivity, 103.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=369occurred in iteration=242, 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: 6.0s AutomataMinimizationTime, 242 MinimizatonAttempts, 484 StatesRemovedByMinimization, 121 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 22.7s SatisfiabilityAnalysisTime, 65.7s InterpolantComputationTime, 44891 NumberOfCodeBlocks, 44891 NumberOfCodeBlocksAsserted, 242 NumberOfCheckSat, 44649 ConstructedInterpolants, 0 QuantifiedInterpolants, 32551057 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 242 InterpolantComputations, 2 PerfectInterpolantSequences, 893101/1778821 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/down.i_4.bplTransformedIcfg_BEv2_5.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-24-03-241.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down.i_4.bplTransformedIcfg_BEv2_5.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-24-03-241.csv Completed graceful shutdown