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/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:16:28,105 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:16:28,107 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:16:28,124 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:16:28,125 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:16:28,127 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:16:28,128 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:16:28,130 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:16:28,133 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:16:28,140 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:16:28,141 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:16:28,141 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:16:28,144 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:16:28,145 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:16:28,148 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:16:28,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:16:28,150 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:16:28,153 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:16:28,157 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:16:28,159 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:16:28,162 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:16:28,164 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:16:28,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:16:28,168 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:16:28,169 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:16:28,170 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:16:28,171 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:16:28,172 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:16:28,173 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:16:28,175 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:16:28,176 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:16:28,177 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:16:28,181 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:16:28,196 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:16:28,196 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:16:28,197 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:16:28,198 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:16:28,198 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:16:28,198 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:16:28,199 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:16:28,199 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:16:28,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:16:28,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:16:28,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:16:28,278 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:16:28,279 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:16:28,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl [2018-07-25 13:16:28,280 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl' [2018-07-25 13:16:28,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:16:28,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:16:28,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:16:28,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:16:28,328 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:16:28,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:16:28,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:16:28,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:16:28,368 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:16:28,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:16:28,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:16:28,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:16:28,387 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:16:28,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/1) ... [2018-07-25 13:16:28,469 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-25 13:16:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:16:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:16:28,625 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:16:28,626 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:16:28 BoogieIcfgContainer [2018-07-25 13:16:28,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:16:28,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:16:28,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:16:28,632 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:16:28,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:16:28" (1/2) ... [2018-07-25 13:16:28,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2301af84 and model type count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:16:28, skipping insertion in model container [2018-07-25 13:16:28,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:16:28" (2/2) ... [2018-07-25 13:16:28,637 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl [2018-07-25 13:16:28,647 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:16:28,658 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:16:28,709 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:16:28,709 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:16:28,710 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:16:28,710 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:16:28,710 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:16:28,710 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:16:28,711 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:16:28,711 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:16:28,711 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:16:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 13:16:28,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:16:28,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:28,740 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:16:28,741 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:28,747 INFO L82 PathProgramCache]: Analyzing trace with hash 947099, now seen corresponding path program 1 times [2018-07-25 13:16:28,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:28,849 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 13:16:28,852 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:16:28,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:16:28,857 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:16:28,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:16:28,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:16:28,871 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 13:16:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:28,911 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 13:16:28,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:16:28,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 13:16:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:28,925 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:16:28,926 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:16:28,929 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 13:16:28,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:16:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 13:16:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 13:16:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 13:16:28,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 13:16:28,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:28,968 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 13:16:28,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:16:28,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 13:16:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:16:28,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:28,969 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 13:16:28,969 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:28,970 INFO L82 PathProgramCache]: Analyzing trace with hash 910108837, now seen corresponding path program 1 times [2018-07-25 13:16:28,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:29,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:29,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:16:29,003 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:16:29,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:16:29,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:16:29,004 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 13:16:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:29,044 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 13:16:29,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:16:29,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 13:16:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:29,046 INFO L225 Difference]: With dead ends: 12 [2018-07-25 13:16:29,046 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:16:29,047 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 13:16:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:16:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 13:16:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:16:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 13:16:29,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 13:16:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:29,051 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 13:16:29,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:16:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 13:16:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:16:29,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:29,052 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 13:16:29,053 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1558789329, now seen corresponding path program 2 times [2018-07-25 13:16:29,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:29,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:29,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:16:29,110 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:16:29,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:16:29,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:16:29,111 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-07-25 13:16:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:29,159 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 13:16:29,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:16:29,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-07-25 13:16:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:29,161 INFO L225 Difference]: With dead ends: 14 [2018-07-25 13:16:29,161 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 13:16:29,162 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:29,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 13:16:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-07-25 13:16:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:16:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 13:16:29,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 13:16:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:29,167 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 13:16:29,167 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:16:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 13:16:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:16:29,168 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:29,168 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 13:16:29,168 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash 946987833, now seen corresponding path program 3 times [2018-07-25 13:16:29,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:29,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:29,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:29,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:16:29,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:16:29,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:16:29,241 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-07-25 13:16:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:29,310 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 13:16:29,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:16:29,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-25 13:16:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:29,311 INFO L225 Difference]: With dead ends: 16 [2018-07-25 13:16:29,311 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 13:16:29,312 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:16:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 13:16:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-07-25 13:16:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 13:16:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 13:16:29,317 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 13:16:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:29,318 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 13:16:29,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:16:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 13:16:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 13:16:29,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:29,319 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 13:16:29,319 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:29,319 INFO L82 PathProgramCache]: Analyzing trace with hash -477812541, now seen corresponding path program 4 times [2018-07-25 13:16:29,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:29,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:29,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:29,362 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:29,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:29,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:29,363 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2018-07-25 13:16:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:29,411 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 13:16:29,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:16:29,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 13:16:29,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:29,412 INFO L225 Difference]: With dead ends: 18 [2018-07-25 13:16:29,412 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 13:16:29,413 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:16:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 13:16:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-07-25 13:16:29,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 13:16:29,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 13:16:29,418 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 13:16:29,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:29,419 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 13:16:29,419 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:29,419 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 13:16:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:29,420 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:29,420 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 13:16:29,420 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash 383595469, now seen corresponding path program 5 times [2018-07-25 13:16:29,421 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:29,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:29,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:29,459 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:29,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:29,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:29,460 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2018-07-25 13:16:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:29,540 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-25 13:16:29,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:16:29,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-07-25 13:16:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:29,542 INFO L225 Difference]: With dead ends: 20 [2018-07-25 13:16:29,542 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 13:16:29,543 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:16:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 13:16:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-07-25 13:16:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 13:16:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 13:16:29,563 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 13:16:29,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:29,564 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 13:16:29,564 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 13:16:29,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 13:16:29,565 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:29,565 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 13:16:29,567 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:29,568 INFO L82 PathProgramCache]: Analyzing trace with hash -731995049, now seen corresponding path program 6 times [2018-07-25 13:16:29,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:29,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:29,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:16:29,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:16:29,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:16:29,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:16:29,627 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2018-07-25 13:16:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:29,706 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 13:16:29,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:29,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2018-07-25 13:16:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:29,709 INFO L225 Difference]: With dead ends: 22 [2018-07-25 13:16:29,709 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 13:16:29,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:16:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 13:16:29,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-07-25 13:16:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 13:16:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 13:16:29,720 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 13:16:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:29,727 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 13:16:29,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:16:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 13:16:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:29,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:29,729 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 13:16:29,729 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:29,730 INFO L82 PathProgramCache]: Analyzing trace with hash 927341153, now seen corresponding path program 7 times [2018-07-25 13:16:29,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:29,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:29,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:16:29,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:16:29,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:16:29,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:16:29,809 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2018-07-25 13:16:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:29,908 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-25 13:16:29,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:16:29,909 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-07-25 13:16:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:29,910 INFO L225 Difference]: With dead ends: 24 [2018-07-25 13:16:29,910 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 13:16:29,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:16:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 13:16:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-07-25 13:16:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 13:16:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 13:16:29,924 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 13:16:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:29,925 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 13:16:29,925 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:16:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 13:16:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 13:16:29,927 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:29,927 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 13:16:29,928 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:29,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2116564459, now seen corresponding path program 8 times [2018-07-25 13:16:29,929 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:29,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:29,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:16:29,986 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:16:29,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:16:29,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:16:29,987 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 12 states. [2018-07-25 13:16:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:30,046 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-25 13:16:30,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:30,046 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-25 13:16:30,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:30,047 INFO L225 Difference]: With dead ends: 26 [2018-07-25 13:16:30,047 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 13:16:30,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:16:30,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 13:16:30,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-07-25 13:16:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 13:16:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 13:16:30,053 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 13:16:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:30,054 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 13:16:30,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:16:30,054 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 13:16:30,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:30,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:30,055 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 13:16:30,056 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:30,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1796106507, now seen corresponding path program 9 times [2018-07-25 13:16:30,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:30,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:30,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:16:30,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:16:30,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:16:30,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:16:30,097 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 13 states. [2018-07-25 13:16:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:30,175 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-25 13:16:30,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:16:30,176 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2018-07-25 13:16:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:30,177 INFO L225 Difference]: With dead ends: 28 [2018-07-25 13:16:30,177 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 13:16:30,178 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:16:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 13:16:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-07-25 13:16:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 13:16:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 13:16:30,183 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 13:16:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:30,184 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 13:16:30,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:16:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 13:16:30,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 13:16:30,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:30,185 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 13:16:30,185 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:30,186 INFO L82 PathProgramCache]: Analyzing trace with hash 518446463, now seen corresponding path program 10 times [2018-07-25 13:16:30,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:30,234 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:30,235 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:16:30,235 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:16:30,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:16:30,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:16:30,238 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 14 states. [2018-07-25 13:16:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:30,318 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-25 13:16:30,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:16:30,318 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2018-07-25 13:16:30,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:30,319 INFO L225 Difference]: With dead ends: 30 [2018-07-25 13:16:30,319 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 13:16:30,320 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:16:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 13:16:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-07-25 13:16:30,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 13:16:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 13:16:30,334 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 13:16:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:30,335 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 13:16:30,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:16:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 13:16:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:16:30,336 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:30,336 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 13:16:30,336 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:30,337 INFO L82 PathProgramCache]: Analyzing trace with hash 10791305, now seen corresponding path program 11 times [2018-07-25 13:16:30,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:30,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:30,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:16:30,396 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:16:30,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:16:30,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:16:30,397 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 15 states. [2018-07-25 13:16:30,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:30,479 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-25 13:16:30,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:16:30,480 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2018-07-25 13:16:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:30,481 INFO L225 Difference]: With dead ends: 32 [2018-07-25 13:16:30,481 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 13:16:30,482 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:16:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 13:16:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-07-25 13:16:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 13:16:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 13:16:30,496 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 13:16:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:30,497 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 13:16:30,497 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:16:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 13:16:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 13:16:30,498 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:30,498 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 13:16:30,499 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:30,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1780456211, now seen corresponding path program 12 times [2018-07-25 13:16:30,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:30,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:30,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:16:30,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:16:30,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:16:30,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:16:30,559 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 16 states. [2018-07-25 13:16:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:30,646 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-25 13:16:30,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:16:30,647 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2018-07-25 13:16:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:30,648 INFO L225 Difference]: With dead ends: 34 [2018-07-25 13:16:30,648 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 13:16:30,649 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:16:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 13:16:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-07-25 13:16:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 13:16:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 13:16:30,664 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 13:16:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:30,665 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 13:16:30,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:16:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 13:16:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 13:16:30,666 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:30,666 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 13:16:30,666 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:30,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1621381661, now seen corresponding path program 13 times [2018-07-25 13:16:30,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:30,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:30,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:16:30,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:16:30,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:16:30,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:16:30,748 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 17 states. [2018-07-25 13:16:30,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:30,837 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-25 13:16:30,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:16:30,837 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-07-25 13:16:30,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:30,838 INFO L225 Difference]: With dead ends: 36 [2018-07-25 13:16:30,838 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 13:16:30,839 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:16:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 13:16:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-07-25 13:16:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 13:16:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 13:16:30,849 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 13:16:30,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:30,849 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 13:16:30,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:16:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 13:16:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 13:16:30,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:30,852 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 13:16:30,852 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:30,852 INFO L82 PathProgramCache]: Analyzing trace with hash -925405529, now seen corresponding path program 14 times [2018-07-25 13:16:30,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:30,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:30,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:16:30,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:16:30,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:16:30,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:16:30,930 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 18 states. [2018-07-25 13:16:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:31,025 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-25 13:16:31,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:16:31,026 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 32 [2018-07-25 13:16:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:31,027 INFO L225 Difference]: With dead ends: 38 [2018-07-25 13:16:31,028 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 13:16:31,029 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:16:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 13:16:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-07-25 13:16:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 13:16:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 13:16:31,037 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 13:16:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:31,038 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 13:16:31,038 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:16:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 13:16:31,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 13:16:31,039 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:31,039 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 13:16:31,039 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash -256536399, now seen corresponding path program 15 times [2018-07-25 13:16:31,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:31,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:31,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:16:31,130 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:16:31,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:16:31,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:16:31,131 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 19 states. [2018-07-25 13:16:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:31,223 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-25 13:16:31,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:16:31,223 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2018-07-25 13:16:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:31,230 INFO L225 Difference]: With dead ends: 40 [2018-07-25 13:16:31,230 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 13:16:31,231 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:16:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 13:16:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-07-25 13:16:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 13:16:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 13:16:31,240 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 13:16:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:31,240 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 13:16:31,241 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:16:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 13:16:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 13:16:31,242 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:31,242 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 13:16:31,243 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:31,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1718396869, now seen corresponding path program 16 times [2018-07-25 13:16:31,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:31,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:31,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:16:31,314 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:16:31,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:16:31,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:16:31,316 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 20 states. [2018-07-25 13:16:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:31,405 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-25 13:16:31,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:16:31,405 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 36 [2018-07-25 13:16:31,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:31,406 INFO L225 Difference]: With dead ends: 42 [2018-07-25 13:16:31,406 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 13:16:31,407 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:16:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 13:16:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-07-25 13:16:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 13:16:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 13:16:31,421 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 13:16:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:31,422 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 13:16:31,422 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:16:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 13:16:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 13:16:31,423 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:31,423 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 13:16:31,423 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:31,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2112002747, now seen corresponding path program 17 times [2018-07-25 13:16:31,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:31,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:31,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:16:31,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:16:31,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:16:31,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:16:31,517 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 21 states. [2018-07-25 13:16:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:31,625 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-25 13:16:31,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:16:31,625 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2018-07-25 13:16:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:31,626 INFO L225 Difference]: With dead ends: 44 [2018-07-25 13:16:31,626 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 13:16:31,627 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:16:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 13:16:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-07-25 13:16:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 13:16:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 13:16:31,634 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 13:16:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:31,634 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 13:16:31,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:16:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 13:16:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 13:16:31,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:31,635 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 13:16:31,636 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:31,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1884837839, now seen corresponding path program 18 times [2018-07-25 13:16:31,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:31,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:31,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:16:31,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:16:31,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:16:31,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:16:31,710 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 22 states. [2018-07-25 13:16:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:31,816 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-25 13:16:31,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:16:31,816 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2018-07-25 13:16:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:31,817 INFO L225 Difference]: With dead ends: 46 [2018-07-25 13:16:31,817 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 13:16:31,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:16:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 13:16:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-07-25 13:16:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 13:16:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 13:16:31,824 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 13:16:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:31,825 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 13:16:31,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:16:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 13:16:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 13:16:31,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:31,826 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 13:16:31,826 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:31,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1147088935, now seen corresponding path program 19 times [2018-07-25 13:16:31,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:31,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:31,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:16:31,905 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:16:31,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:16:31,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:16:31,906 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 23 states. [2018-07-25 13:16:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:32,021 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-25 13:16:32,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:16:32,021 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2018-07-25 13:16:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:32,022 INFO L225 Difference]: With dead ends: 48 [2018-07-25 13:16:32,022 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 13:16:32,023 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:16:32,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 13:16:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2018-07-25 13:16:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 13:16:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 13:16:32,036 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 13:16:32,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:32,037 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 13:16:32,037 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:16:32,037 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 13:16:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 13:16:32,038 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:32,038 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 13:16:32,038 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:32,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1454075235, now seen corresponding path program 20 times [2018-07-25 13:16:32,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:32,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:32,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:16:32,130 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:16:32,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:16:32,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:16:32,131 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 24 states. [2018-07-25 13:16:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:32,260 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-25 13:16:32,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:16:32,260 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2018-07-25 13:16:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:32,261 INFO L225 Difference]: With dead ends: 50 [2018-07-25 13:16:32,261 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 13:16:32,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:16:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 13:16:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2018-07-25 13:16:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 13:16:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 13:16:32,269 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 13:16:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:32,270 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 13:16:32,270 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:16:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 13:16:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 13:16:32,270 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:32,271 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 13:16:32,271 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1501876333, now seen corresponding path program 21 times [2018-07-25 13:16:32,271 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:32,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:32,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:16:32,373 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:16:32,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:16:32,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:16:32,374 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 25 states. [2018-07-25 13:16:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:32,503 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-25 13:16:32,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:16:32,503 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-07-25 13:16:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:32,504 INFO L225 Difference]: With dead ends: 52 [2018-07-25 13:16:32,504 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 13:16:32,512 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:16:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 13:16:32,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-07-25 13:16:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 13:16:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 13:16:32,519 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 13:16:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:32,520 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 13:16:32,520 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:16:32,520 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 13:16:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 13:16:32,520 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:32,521 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 13:16:32,521 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:32,521 INFO L82 PathProgramCache]: Analyzing trace with hash 194091255, now seen corresponding path program 22 times [2018-07-25 13:16:32,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:32,616 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:32,616 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:16:32,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:16:32,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:16:32,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:16:32,618 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 26 states. [2018-07-25 13:16:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:32,799 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-25 13:16:32,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:16:32,799 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 48 [2018-07-25 13:16:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:32,800 INFO L225 Difference]: With dead ends: 54 [2018-07-25 13:16:32,800 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 13:16:32,801 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:16:32,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 13:16:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-07-25 13:16:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 13:16:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 13:16:32,815 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 13:16:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:32,815 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 13:16:32,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:16:32,817 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 13:16:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 13:16:32,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:32,819 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 13:16:32,819 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:32,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1838049025, now seen corresponding path program 23 times [2018-07-25 13:16:32,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:32,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:32,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:16:32,910 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:16:32,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:16:32,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:16:32,911 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 27 states. [2018-07-25 13:16:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:33,028 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-25 13:16:33,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:16:33,028 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2018-07-25 13:16:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:33,029 INFO L225 Difference]: With dead ends: 56 [2018-07-25 13:16:33,029 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 13:16:33,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:16:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 13:16:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2018-07-25 13:16:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 13:16:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 13:16:33,036 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 13:16:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:33,036 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 13:16:33,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:16:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 13:16:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 13:16:33,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:33,037 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 13:16:33,037 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1133501067, now seen corresponding path program 24 times [2018-07-25 13:16:33,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:33,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:33,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:16:33,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:16:33,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:16:33,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:16:33,127 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 28 states. [2018-07-25 13:16:33,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:33,254 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-25 13:16:33,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:16:33,255 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2018-07-25 13:16:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:33,255 INFO L225 Difference]: With dead ends: 58 [2018-07-25 13:16:33,255 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 13:16:33,257 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:16:33,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 13:16:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-07-25 13:16:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 13:16:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 13:16:33,264 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 13:16:33,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:33,265 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 13:16:33,265 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:16:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 13:16:33,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 13:16:33,266 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:33,266 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 13:16:33,266 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:33,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1627221099, now seen corresponding path program 25 times [2018-07-25 13:16:33,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:33,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:33,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:16:33,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:16:33,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:16:33,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:16:33,364 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 29 states. [2018-07-25 13:16:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:33,502 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-25 13:16:33,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:16:33,502 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2018-07-25 13:16:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:33,503 INFO L225 Difference]: With dead ends: 60 [2018-07-25 13:16:33,503 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 13:16:33,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:16:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 13:16:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-07-25 13:16:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 13:16:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 13:16:33,510 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 13:16:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:33,511 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 13:16:33,511 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:16:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 13:16:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 13:16:33,512 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:33,512 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 13:16:33,512 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:33,513 INFO L82 PathProgramCache]: Analyzing trace with hash -391433697, now seen corresponding path program 26 times [2018-07-25 13:16:33,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:33,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:33,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:16:33,620 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:16:33,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:16:33,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:16:33,621 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 30 states. [2018-07-25 13:16:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:33,781 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-25 13:16:33,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:16:33,782 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2018-07-25 13:16:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:33,782 INFO L225 Difference]: With dead ends: 62 [2018-07-25 13:16:33,782 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 13:16:33,784 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:16:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 13:16:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2018-07-25 13:16:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 13:16:33,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 13:16:33,789 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 13:16:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:33,789 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 13:16:33,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:16:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 13:16:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 13:16:33,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:33,790 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 13:16:33,792 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:33,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1789285929, now seen corresponding path program 27 times [2018-07-25 13:16:33,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:33,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:33,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:16:33,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:16:33,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:16:33,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:16:33,901 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 31 states. [2018-07-25 13:16:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:34,047 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-25 13:16:34,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:16:34,048 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2018-07-25 13:16:34,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:34,048 INFO L225 Difference]: With dead ends: 64 [2018-07-25 13:16:34,049 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 13:16:34,050 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:16:34,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 13:16:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-07-25 13:16:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 13:16:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 13:16:34,055 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 13:16:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:34,056 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 13:16:34,056 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:16:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 13:16:34,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 13:16:34,056 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:34,057 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 13:16:34,057 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:34,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1516806067, now seen corresponding path program 28 times [2018-07-25 13:16:34,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:34,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:34,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:16:34,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:16:34,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:16:34,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:16:34,157 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 32 states. [2018-07-25 13:16:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:34,307 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-25 13:16:34,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:16:34,307 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 60 [2018-07-25 13:16:34,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:34,308 INFO L225 Difference]: With dead ends: 66 [2018-07-25 13:16:34,308 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 13:16:34,310 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:16:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 13:16:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2018-07-25 13:16:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 13:16:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 13:16:34,315 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 13:16:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:34,315 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 13:16:34,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:16:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 13:16:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 13:16:34,316 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:34,316 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 13:16:34,317 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1656663741, now seen corresponding path program 29 times [2018-07-25 13:16:34,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:34,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:34,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:16:34,423 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:16:34,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:16:34,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:16:34,424 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 33 states. [2018-07-25 13:16:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:34,580 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-25 13:16:34,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:16:34,580 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2018-07-25 13:16:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:34,581 INFO L225 Difference]: With dead ends: 68 [2018-07-25 13:16:34,581 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 13:16:34,584 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:16:34,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 13:16:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2018-07-25 13:16:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 13:16:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 13:16:34,590 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 13:16:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:34,590 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 13:16:34,590 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:16:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 13:16:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 13:16:34,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:34,591 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 13:16:34,592 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:34,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1379065017, now seen corresponding path program 30 times [2018-07-25 13:16:34,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:34,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:34,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:16:34,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:16:34,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:16:34,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:16:34,707 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 34 states. [2018-07-25 13:16:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:34,895 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-25 13:16:34,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:16:34,895 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 64 [2018-07-25 13:16:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:34,896 INFO L225 Difference]: With dead ends: 70 [2018-07-25 13:16:34,896 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 13:16:34,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:16:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 13:16:34,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2018-07-25 13:16:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 13:16:34,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 13:16:34,904 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 13:16:34,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:34,904 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 13:16:34,905 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:16:34,905 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 13:16:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 13:16:34,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:34,906 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 13:16:34,906 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:34,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1863359825, now seen corresponding path program 31 times [2018-07-25 13:16:34,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:35,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:35,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:16:35,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:16:35,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:16:35,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:16:35,043 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 35 states. [2018-07-25 13:16:35,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:35,247 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-25 13:16:35,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:16:35,247 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 66 [2018-07-25 13:16:35,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:35,248 INFO L225 Difference]: With dead ends: 72 [2018-07-25 13:16:35,248 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 13:16:35,251 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:16:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 13:16:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-07-25 13:16:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 13:16:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 13:16:35,258 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 13:16:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:35,258 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 13:16:35,258 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:16:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 13:16:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 13:16:35,259 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:35,259 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 13:16:35,260 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:35,260 INFO L82 PathProgramCache]: Analyzing trace with hash -312623909, now seen corresponding path program 32 times [2018-07-25 13:16:35,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:35,479 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:35,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:16:35,479 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:16:35,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:16:35,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:16:35,484 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 36 states. [2018-07-25 13:16:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:35,668 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-25 13:16:35,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:16:35,668 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 68 [2018-07-25 13:16:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:35,669 INFO L225 Difference]: With dead ends: 74 [2018-07-25 13:16:35,669 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 13:16:35,672 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:16:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 13:16:35,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2018-07-25 13:16:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 13:16:35,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 13:16:35,678 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 13:16:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:35,678 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 13:16:35,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:16:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 13:16:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 13:16:35,679 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:35,679 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 13:16:35,680 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:35,680 INFO L82 PathProgramCache]: Analyzing trace with hash 216080869, now seen corresponding path program 33 times [2018-07-25 13:16:35,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:35,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:35,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:16:35,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:16:35,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:16:35,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:16:35,811 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 37 states. [2018-07-25 13:16:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:36,003 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-25 13:16:36,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:16:36,004 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2018-07-25 13:16:36,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:36,004 INFO L225 Difference]: With dead ends: 76 [2018-07-25 13:16:36,005 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 13:16:36,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:16:36,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 13:16:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2018-07-25 13:16:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 13:16:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 13:16:36,012 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 13:16:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:36,012 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 13:16:36,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:16:36,012 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 13:16:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 13:16:36,013 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:36,013 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 13:16:36,013 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1495231599, now seen corresponding path program 34 times [2018-07-25 13:16:36,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:36,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:36,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:16:36,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:16:36,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:16:36,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:16:36,155 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 38 states. [2018-07-25 13:16:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:36,340 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-25 13:16:36,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:16:36,340 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 72 [2018-07-25 13:16:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:36,341 INFO L225 Difference]: With dead ends: 78 [2018-07-25 13:16:36,341 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 13:16:36,342 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:16:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 13:16:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2018-07-25 13:16:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 13:16:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 13:16:36,348 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 13:16:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:36,348 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 13:16:36,348 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:16:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 13:16:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 13:16:36,349 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:36,349 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 13:16:36,350 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1896530823, now seen corresponding path program 35 times [2018-07-25 13:16:36,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:36,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:36,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:16:36,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:16:36,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:16:36,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:16:36,474 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 39 states. [2018-07-25 13:16:36,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:36,665 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-25 13:16:36,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:16:36,665 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 74 [2018-07-25 13:16:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:36,666 INFO L225 Difference]: With dead ends: 80 [2018-07-25 13:16:36,666 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 13:16:36,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:16:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 13:16:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2018-07-25 13:16:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 13:16:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 13:16:36,673 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 13:16:36,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:36,674 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 13:16:36,674 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:16:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 13:16:36,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 13:16:36,674 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:36,675 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 13:16:36,675 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:36,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1500040701, now seen corresponding path program 36 times [2018-07-25 13:16:36,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:36,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:36,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:16:36,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:16:36,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:16:36,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:16:36,808 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 40 states. [2018-07-25 13:16:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:37,003 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-25 13:16:37,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:16:37,003 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 76 [2018-07-25 13:16:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:37,004 INFO L225 Difference]: With dead ends: 82 [2018-07-25 13:16:37,004 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 13:16:37,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:16:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 13:16:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2018-07-25 13:16:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 13:16:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 13:16:37,011 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 13:16:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:37,011 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 13:16:37,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:16:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 13:16:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 13:16:37,012 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:37,012 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 13:16:37,013 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1569844493, now seen corresponding path program 37 times [2018-07-25 13:16:37,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:37,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:37,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:16:37,145 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:16:37,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:16:37,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:16:37,147 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 41 states. [2018-07-25 13:16:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:37,353 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-25 13:16:37,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:16:37,353 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 78 [2018-07-25 13:16:37,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:37,354 INFO L225 Difference]: With dead ends: 84 [2018-07-25 13:16:37,354 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 13:16:37,356 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:16:37,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 13:16:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2018-07-25 13:16:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 13:16:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 13:16:37,365 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 13:16:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:37,365 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 13:16:37,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:16:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 13:16:37,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 13:16:37,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:37,366 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 13:16:37,367 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1086983575, now seen corresponding path program 38 times [2018-07-25 13:16:37,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:37,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:37,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:16:37,513 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:16:37,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:16:37,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:16:37,514 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 42 states. [2018-07-25 13:16:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:37,757 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-25 13:16:37,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:16:37,757 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 80 [2018-07-25 13:16:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:37,758 INFO L225 Difference]: With dead ends: 86 [2018-07-25 13:16:37,759 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 13:16:37,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:16:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 13:16:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2018-07-25 13:16:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 13:16:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 13:16:37,768 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 13:16:37,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:37,768 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 13:16:37,768 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:16:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 13:16:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 13:16:37,769 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:37,770 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 13:16:37,770 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 914109345, now seen corresponding path program 39 times [2018-07-25 13:16:37,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:37,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:37,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:16:37,936 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:16:37,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:16:37,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:16:37,937 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 43 states. [2018-07-25 13:16:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:38,187 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-25 13:16:38,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:16:38,187 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 82 [2018-07-25 13:16:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:38,188 INFO L225 Difference]: With dead ends: 88 [2018-07-25 13:16:38,188 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 13:16:38,189 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:16:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 13:16:38,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2018-07-25 13:16:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 13:16:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 13:16:38,195 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 13:16:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:38,195 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 13:16:38,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:16:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 13:16:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 13:16:38,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:38,196 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 13:16:38,197 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2009268437, now seen corresponding path program 40 times [2018-07-25 13:16:38,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:38,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:38,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:16:38,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:16:38,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:16:38,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:16:38,326 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 44 states. [2018-07-25 13:16:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:38,522 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-25 13:16:38,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:16:38,522 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 84 [2018-07-25 13:16:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:38,523 INFO L225 Difference]: With dead ends: 90 [2018-07-25 13:16:38,523 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 13:16:38,527 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:16:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 13:16:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2018-07-25 13:16:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 13:16:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 13:16:38,534 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 13:16:38,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:38,534 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 13:16:38,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:16:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 13:16:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 13:16:38,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:38,535 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 13:16:38,535 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:38,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1828261941, now seen corresponding path program 41 times [2018-07-25 13:16:38,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:38,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:38,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:16:38,678 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:16:38,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:16:38,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:16:38,679 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 45 states. [2018-07-25 13:16:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:38,870 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-25 13:16:38,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:16:38,870 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 86 [2018-07-25 13:16:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:38,871 INFO L225 Difference]: With dead ends: 92 [2018-07-25 13:16:38,871 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 13:16:38,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:16:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 13:16:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2018-07-25 13:16:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 13:16:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 13:16:38,880 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 13:16:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:38,881 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 13:16:38,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:16:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 13:16:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 13:16:38,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:38,882 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 13:16:38,882 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:38,882 INFO L82 PathProgramCache]: Analyzing trace with hash 318047935, now seen corresponding path program 42 times [2018-07-25 13:16:38,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:39,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:39,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:16:39,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:16:39,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:16:39,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:16:39,018 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 46 states. [2018-07-25 13:16:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:39,241 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-25 13:16:39,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:16:39,241 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 88 [2018-07-25 13:16:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:39,242 INFO L225 Difference]: With dead ends: 94 [2018-07-25 13:16:39,242 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 13:16:39,246 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2970, Invalid=4862, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:16:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 13:16:39,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2018-07-25 13:16:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 13:16:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 13:16:39,253 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 13:16:39,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:39,253 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 13:16:39,253 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:16:39,253 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 13:16:39,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 13:16:39,254 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:39,254 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 13:16:39,255 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:39,255 INFO L82 PathProgramCache]: Analyzing trace with hash 701334217, now seen corresponding path program 43 times [2018-07-25 13:16:39,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:39,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:39,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:16:39,403 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:16:39,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:16:39,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:16:39,405 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 47 states. [2018-07-25 13:16:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:39,633 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-25 13:16:39,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:16:39,634 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 90 [2018-07-25 13:16:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:39,635 INFO L225 Difference]: With dead ends: 96 [2018-07-25 13:16:39,635 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 13:16:39,637 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:16:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 13:16:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2018-07-25 13:16:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 13:16:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 13:16:39,644 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 13:16:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:39,644 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 13:16:39,644 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:16:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 13:16:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 13:16:39,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:39,646 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 13:16:39,646 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:39,646 INFO L82 PathProgramCache]: Analyzing trace with hash -327736237, now seen corresponding path program 44 times [2018-07-25 13:16:39,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:39,807 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:39,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:16:39,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:16:39,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:16:39,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:16:39,809 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 48 states. [2018-07-25 13:16:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:40,042 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-25 13:16:40,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:16:40,042 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 92 [2018-07-25 13:16:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:40,043 INFO L225 Difference]: With dead ends: 98 [2018-07-25 13:16:40,044 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 13:16:40,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:16:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 13:16:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2018-07-25 13:16:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 13:16:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 13:16:40,053 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 13:16:40,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:40,053 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 13:16:40,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:16:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 13:16:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 13:16:40,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:40,054 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 13:16:40,055 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:40,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1421964451, now seen corresponding path program 45 times [2018-07-25 13:16:40,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:40,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:40,222 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:16:40,222 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:16:40,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:16:40,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:16:40,223 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 49 states. [2018-07-25 13:16:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:40,494 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-25 13:16:40,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:16:40,494 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 94 [2018-07-25 13:16:40,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:40,495 INFO L225 Difference]: With dead ends: 100 [2018-07-25 13:16:40,495 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 13:16:40,498 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3384, Invalid=5546, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:16:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 13:16:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2018-07-25 13:16:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 13:16:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 13:16:40,506 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 13:16:40,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:40,506 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 13:16:40,507 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:16:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 13:16:40,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 13:16:40,508 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:40,508 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 13:16:40,508 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:40,508 INFO L82 PathProgramCache]: Analyzing trace with hash -708290585, now seen corresponding path program 46 times [2018-07-25 13:16:40,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:40,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:40,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:16:40,700 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:16:40,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:16:40,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:16:40,702 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 50 states. [2018-07-25 13:16:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:41,022 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-25 13:16:41,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:16:41,022 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 96 [2018-07-25 13:16:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:41,023 INFO L225 Difference]: With dead ends: 102 [2018-07-25 13:16:41,023 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 13:16:41,027 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:16:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 13:16:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2018-07-25 13:16:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 13:16:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 13:16:41,034 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 13:16:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:41,035 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 13:16:41,035 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:16:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 13:16:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 13:16:41,036 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:41,036 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 13:16:41,036 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:41,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2062472719, now seen corresponding path program 47 times [2018-07-25 13:16:41,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:41,173 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:41,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:16:41,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:16:41,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:16:41,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:16:41,175 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 51 states. [2018-07-25 13:16:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:41,391 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-25 13:16:41,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:16:41,391 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 98 [2018-07-25 13:16:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:41,392 INFO L225 Difference]: With dead ends: 104 [2018-07-25 13:16:41,392 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 13:16:41,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:16:41,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 13:16:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2018-07-25 13:16:41,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 13:16:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 13:16:41,402 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 13:16:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:41,402 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 13:16:41,402 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:16:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 13:16:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 13:16:41,403 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:41,404 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 13:16:41,404 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:41,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2056412805, now seen corresponding path program 48 times [2018-07-25 13:16:41,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:41,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:41,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:16:41,547 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:16:41,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:16:41,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:16:41,548 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 52 states. [2018-07-25 13:16:41,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:41,769 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-25 13:16:41,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:16:41,769 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 100 [2018-07-25 13:16:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:41,770 INFO L225 Difference]: With dead ends: 106 [2018-07-25 13:16:41,770 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 13:16:41,772 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:16:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 13:16:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2018-07-25 13:16:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 13:16:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 13:16:41,780 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 13:16:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:41,780 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 13:16:41,780 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:16:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 13:16:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 13:16:41,781 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:41,782 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 13:16:41,782 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:41,782 INFO L82 PathProgramCache]: Analyzing trace with hash -527802747, now seen corresponding path program 49 times [2018-07-25 13:16:41,782 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:41,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:41,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:16:41,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:16:41,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:16:41,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:16:41,931 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 53 states. [2018-07-25 13:16:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:42,165 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-25 13:16:42,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:16:42,165 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 102 [2018-07-25 13:16:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:42,166 INFO L225 Difference]: With dead ends: 108 [2018-07-25 13:16:42,166 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 13:16:42,167 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:16:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 13:16:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2018-07-25 13:16:42,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 13:16:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 13:16:42,175 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 13:16:42,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:42,175 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 13:16:42,175 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:16:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 13:16:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 13:16:42,176 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:42,176 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 13:16:42,176 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:42,177 INFO L82 PathProgramCache]: Analyzing trace with hash -412352241, now seen corresponding path program 50 times [2018-07-25 13:16:42,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:42,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:42,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:16:42,325 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:16:42,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:16:42,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:16:42,326 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 54 states. [2018-07-25 13:16:42,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:42,589 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-25 13:16:42,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:16:42,589 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 104 [2018-07-25 13:16:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:42,590 INFO L225 Difference]: With dead ends: 110 [2018-07-25 13:16:42,591 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 13:16:42,592 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:16:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 13:16:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2018-07-25 13:16:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 13:16:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 13:16:42,604 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 13:16:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:42,604 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 13:16:42,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:16:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 13:16:42,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 13:16:42,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:42,606 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 13:16:42,606 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:42,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1133565671, now seen corresponding path program 51 times [2018-07-25 13:16:42,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:42,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:42,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:16:42,787 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:16:42,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:16:42,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:16:42,788 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 55 states. [2018-07-25 13:16:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:43,061 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-25 13:16:43,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:16:43,062 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 106 [2018-07-25 13:16:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:43,063 INFO L225 Difference]: With dead ends: 112 [2018-07-25 13:16:43,063 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 13:16:43,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:16:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 13:16:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2018-07-25 13:16:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 13:16:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 13:16:43,073 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 13:16:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:43,073 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 13:16:43,073 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:16:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 13:16:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 13:16:43,074 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:43,074 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 13:16:43,075 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1565030051, now seen corresponding path program 52 times [2018-07-25 13:16:43,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:43,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:43,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:16:43,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:16:43,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:16:43,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:16:43,251 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 56 states. [2018-07-25 13:16:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:43,556 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-25 13:16:43,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:16:43,557 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 108 [2018-07-25 13:16:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:43,558 INFO L225 Difference]: With dead ends: 114 [2018-07-25 13:16:43,558 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 13:16:43,559 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:16:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 13:16:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2018-07-25 13:16:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 13:16:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 13:16:43,567 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 13:16:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:43,567 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 13:16:43,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:16:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 13:16:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 13:16:43,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:43,568 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 13:16:43,569 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash 755272109, now seen corresponding path program 53 times [2018-07-25 13:16:43,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:43,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:43,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:16:43,727 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:16:43,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:16:43,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:16:43,728 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 57 states. [2018-07-25 13:16:43,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:43,967 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-25 13:16:43,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:16:43,968 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 110 [2018-07-25 13:16:43,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:43,969 INFO L225 Difference]: With dead ends: 116 [2018-07-25 13:16:43,969 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 13:16:43,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4620, Invalid=7590, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:16:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 13:16:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2018-07-25 13:16:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 13:16:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 13:16:43,979 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 13:16:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:43,979 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 13:16:43,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:16:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 13:16:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 13:16:43,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:43,980 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 13:16:43,980 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:43,981 INFO L82 PathProgramCache]: Analyzing trace with hash -33029577, now seen corresponding path program 54 times [2018-07-25 13:16:43,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:44,129 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:44,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:16:44,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:16:44,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:16:44,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:16:44,131 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 58 states. [2018-07-25 13:16:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:44,382 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-25 13:16:44,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:16:44,382 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 112 [2018-07-25 13:16:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:44,383 INFO L225 Difference]: With dead ends: 118 [2018-07-25 13:16:44,383 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 13:16:44,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4788, Invalid=7868, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:16:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 13:16:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2018-07-25 13:16:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 13:16:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 13:16:44,393 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 13:16:44,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:44,393 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 13:16:44,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:16:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 13:16:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 13:16:44,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:44,395 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 13:16:44,395 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:44,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1676705727, now seen corresponding path program 55 times [2018-07-25 13:16:44,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:44,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:44,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:16:44,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:16:44,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:16:44,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:16:44,558 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 59 states. [2018-07-25 13:16:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:44,816 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-25 13:16:44,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:16:44,816 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 114 [2018-07-25 13:16:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:44,817 INFO L225 Difference]: With dead ends: 120 [2018-07-25 13:16:44,817 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 13:16:44,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:16:44,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 13:16:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2018-07-25 13:16:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 13:16:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 13:16:44,826 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 13:16:44,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:44,827 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 13:16:44,827 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:16:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 13:16:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 13:16:44,828 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:44,828 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 13:16:44,828 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash -701520949, now seen corresponding path program 56 times [2018-07-25 13:16:44,829 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:44,998 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:45,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:16:45,002 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:16:45,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:16:45,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:16:45,003 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 60 states. [2018-07-25 13:16:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:45,297 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-25 13:16:45,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:16:45,297 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 116 [2018-07-25 13:16:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:45,298 INFO L225 Difference]: With dead ends: 122 [2018-07-25 13:16:45,298 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 13:16:45,300 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5133, Invalid=8439, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:16:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 13:16:45,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2018-07-25 13:16:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 13:16:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 13:16:45,307 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 13:16:45,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:45,308 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 13:16:45,308 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:16:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 13:16:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 13:16:45,309 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:45,309 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 13:16:45,310 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:45,310 INFO L82 PathProgramCache]: Analyzing trace with hash 148180181, now seen corresponding path program 57 times [2018-07-25 13:16:45,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:45,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:45,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:16:45,490 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:16:45,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:16:45,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:16:45,491 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 61 states. [2018-07-25 13:16:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:45,849 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-25 13:16:45,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:16:45,849 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 118 [2018-07-25 13:16:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:45,850 INFO L225 Difference]: With dead ends: 124 [2018-07-25 13:16:45,850 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 13:16:45,852 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5310, Invalid=8732, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:16:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 13:16:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2018-07-25 13:16:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 13:16:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 13:16:45,862 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 13:16:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:45,862 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 13:16:45,862 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:16:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 13:16:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 13:16:45,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:45,864 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 13:16:45,864 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash 667179871, now seen corresponding path program 58 times [2018-07-25 13:16:45,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:46,150 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:46,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:16:46,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:16:46,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:16:46,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:16:46,151 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 62 states. [2018-07-25 13:16:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:46,408 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-25 13:16:46,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:16:46,408 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 120 [2018-07-25 13:16:46,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:46,409 INFO L225 Difference]: With dead ends: 126 [2018-07-25 13:16:46,409 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 13:16:46,411 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5490, Invalid=9030, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:16:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 13:16:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2018-07-25 13:16:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 13:16:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 13:16:46,417 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 13:16:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:46,418 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 13:16:46,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:16:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 13:16:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 13:16:46,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:46,419 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 13:16:46,419 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:46,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1209675625, now seen corresponding path program 59 times [2018-07-25 13:16:46,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:46,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:46,580 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:16:46,581 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:16:46,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:16:46,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:16:46,582 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 63 states. [2018-07-25 13:16:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:46,869 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-25 13:16:46,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:16:46,870 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 122 [2018-07-25 13:16:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:46,871 INFO L225 Difference]: With dead ends: 128 [2018-07-25 13:16:46,871 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 13:16:46,872 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:16:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 13:16:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2018-07-25 13:16:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 13:16:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 13:16:46,879 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 13:16:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:46,879 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 13:16:46,879 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:16:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 13:16:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 13:16:46,880 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:46,880 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 13:16:46,881 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:46,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1437914893, now seen corresponding path program 60 times [2018-07-25 13:16:46,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:47,049 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:47,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:16:47,049 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:16:47,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:16:47,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:16:47,051 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 64 states. [2018-07-25 13:16:47,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:47,345 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-25 13:16:47,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:16:47,345 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 124 [2018-07-25 13:16:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:47,346 INFO L225 Difference]: With dead ends: 130 [2018-07-25 13:16:47,346 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 13:16:47,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5859, Invalid=9641, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:16:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 13:16:47,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2018-07-25 13:16:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 13:16:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 13:16:47,356 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 13:16:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:47,356 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 13:16:47,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:16:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 13:16:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 13:16:47,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:47,358 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 13:16:47,358 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:47,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1143203837, now seen corresponding path program 61 times [2018-07-25 13:16:47,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:47,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:47,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:16:47,520 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:16:47,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:16:47,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:16:47,522 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 65 states. [2018-07-25 13:16:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:47,829 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-25 13:16:47,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:16:47,830 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 126 [2018-07-25 13:16:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:47,831 INFO L225 Difference]: With dead ends: 132 [2018-07-25 13:16:47,831 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 13:16:47,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6048, Invalid=9954, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:16:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 13:16:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2018-07-25 13:16:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 13:16:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 13:16:47,839 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 13:16:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:47,840 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 13:16:47,840 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:16:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 13:16:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 13:16:47,841 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:47,841 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 13:16:47,841 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:47,842 INFO L82 PathProgramCache]: Analyzing trace with hash -892793721, now seen corresponding path program 62 times [2018-07-25 13:16:47,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:48,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:48,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:16:48,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:16:48,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:16:48,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:16:48,020 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 66 states. [2018-07-25 13:16:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:48,348 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-25 13:16:48,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:16:48,348 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 128 [2018-07-25 13:16:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:48,349 INFO L225 Difference]: With dead ends: 134 [2018-07-25 13:16:48,349 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 13:16:48,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:16:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 13:16:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2018-07-25 13:16:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 13:16:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 13:16:48,357 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 13:16:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:48,357 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 13:16:48,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:16:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 13:16:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 13:16:48,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:48,358 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 13:16:48,358 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:48,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1018640017, now seen corresponding path program 63 times [2018-07-25 13:16:48,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:48,604 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:48,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:16:48,604 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:16:48,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:16:48,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:16:48,605 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 67 states. [2018-07-25 13:16:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:48,842 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-25 13:16:48,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:16:48,842 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 130 [2018-07-25 13:16:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:48,843 INFO L225 Difference]: With dead ends: 136 [2018-07-25 13:16:48,843 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 13:16:48,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:16:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 13:16:48,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2018-07-25 13:16:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 13:16:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 13:16:48,852 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 13:16:48,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:48,853 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 13:16:48,853 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:16:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 13:16:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 13:16:48,854 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:48,854 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 13:16:48,854 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash -339540453, now seen corresponding path program 64 times [2018-07-25 13:16:48,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:49,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:49,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:16:49,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:16:49,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:16:49,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:16:49,041 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 68 states. [2018-07-25 13:16:49,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:49,280 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-25 13:16:49,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:16:49,281 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 132 [2018-07-25 13:16:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:49,282 INFO L225 Difference]: With dead ends: 138 [2018-07-25 13:16:49,282 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 13:16:49,283 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6633, Invalid=10923, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:16:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 13:16:49,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2018-07-25 13:16:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 13:16:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 13:16:49,290 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 13:16:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:49,290 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 13:16:49,290 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:16:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 13:16:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 13:16:49,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:49,291 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 13:16:49,291 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:49,292 INFO L82 PathProgramCache]: Analyzing trace with hash 119085861, now seen corresponding path program 65 times [2018-07-25 13:16:49,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:49,462 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:49,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:16:49,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:16:49,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:16:49,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:16:49,463 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 69 states. [2018-07-25 13:16:49,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:49,731 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-25 13:16:49,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:16:49,732 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 134 [2018-07-25 13:16:49,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:49,732 INFO L225 Difference]: With dead ends: 140 [2018-07-25 13:16:49,733 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 13:16:49,734 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6834, Invalid=11256, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:16:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 13:16:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2018-07-25 13:16:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 13:16:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 13:16:49,740 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 13:16:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:49,741 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 13:16:49,741 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:16:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 13:16:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 13:16:49,742 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:49,742 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 13:16:49,742 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:49,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1522657873, now seen corresponding path program 66 times [2018-07-25 13:16:49,742 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:49,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:49,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:16:49,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:16:49,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:16:49,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:16:49,940 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 70 states. [2018-07-25 13:16:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:50,245 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-25 13:16:50,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:16:50,246 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 136 [2018-07-25 13:16:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:50,247 INFO L225 Difference]: With dead ends: 142 [2018-07-25 13:16:50,247 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 13:16:50,248 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:16:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 13:16:50,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2018-07-25 13:16:50,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 13:16:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 13:16:50,255 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 13:16:50,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:50,255 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 13:16:50,256 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:16:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 13:16:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 13:16:50,256 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:50,257 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 13:16:50,257 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:50,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1309578681, now seen corresponding path program 67 times [2018-07-25 13:16:50,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:50,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:50,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:16:50,477 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:16:50,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:16:50,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:16:50,478 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 71 states. [2018-07-25 13:16:50,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:50,865 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-25 13:16:50,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:16:50,865 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 138 [2018-07-25 13:16:50,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:50,866 INFO L225 Difference]: With dead ends: 144 [2018-07-25 13:16:50,866 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 13:16:50,868 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:16:50,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 13:16:50,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2018-07-25 13:16:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 13:16:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 13:16:50,875 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 13:16:50,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:50,875 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 13:16:50,875 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:16:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 13:16:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 13:16:50,876 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:50,877 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 13:16:50,877 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:50,877 INFO L82 PathProgramCache]: Analyzing trace with hash 79641411, now seen corresponding path program 68 times [2018-07-25 13:16:50,877 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:51,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:51,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:16:51,188 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:16:51,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:16:51,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:16:51,190 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 72 states. [2018-07-25 13:16:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:51,657 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-25 13:16:51,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:16:51,657 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 140 [2018-07-25 13:16:51,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:51,658 INFO L225 Difference]: With dead ends: 146 [2018-07-25 13:16:51,658 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 13:16:51,660 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:16:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 13:16:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2018-07-25 13:16:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 13:16:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 13:16:51,676 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 13:16:51,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:51,680 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 13:16:51,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:16:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 13:16:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 13:16:51,681 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:51,681 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 13:16:51,681 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:51,682 INFO L82 PathProgramCache]: Analyzing trace with hash -774068659, now seen corresponding path program 69 times [2018-07-25 13:16:51,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:51,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:51,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:16:51,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:16:51,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:16:51,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:16:51,900 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 73 states. [2018-07-25 13:16:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:52,266 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-25 13:16:52,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:16:52,267 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 142 [2018-07-25 13:16:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:52,268 INFO L225 Difference]: With dead ends: 148 [2018-07-25 13:16:52,268 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 13:16:52,270 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2484 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:16:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 13:16:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-07-25 13:16:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 13:16:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 13:16:52,279 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 13:16:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:52,280 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 13:16:52,280 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:16:52,280 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 13:16:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 13:16:52,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:52,281 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 13:16:52,281 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:52,281 INFO L82 PathProgramCache]: Analyzing trace with hash -850692393, now seen corresponding path program 70 times [2018-07-25 13:16:52,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:52,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:52,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:16:52,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:16:52,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:16:52,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:16:52,450 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 74 states. [2018-07-25 13:16:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:52,678 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-25 13:16:52,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:16:52,678 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 144 [2018-07-25 13:16:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:52,679 INFO L225 Difference]: With dead ends: 150 [2018-07-25 13:16:52,679 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 13:16:52,681 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:16:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 13:16:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2018-07-25 13:16:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 13:16:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 13:16:52,687 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 13:16:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:52,688 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 13:16:52,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:16:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 13:16:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 13:16:52,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:52,689 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 13:16:52,689 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:52,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1471656735, now seen corresponding path program 71 times [2018-07-25 13:16:52,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:52,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:52,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:16:52,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:16:52,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:16:52,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:16:52,841 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 75 states. [2018-07-25 13:16:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:53,115 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-25 13:16:53,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:16:53,115 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 146 [2018-07-25 13:16:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:53,116 INFO L225 Difference]: With dead ends: 152 [2018-07-25 13:16:53,116 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 13:16:53,117 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:16:53,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 13:16:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2018-07-25 13:16:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 13:16:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 13:16:53,124 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 13:16:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:53,124 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 13:16:53,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:16:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 13:16:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 13:16:53,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:53,126 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 13:16:53,126 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:53,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1217935253, now seen corresponding path program 72 times [2018-07-25 13:16:53,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:53,276 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:53,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:16:53,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:16:53,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:16:53,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:16:53,278 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 76 states. [2018-07-25 13:16:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:53,613 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-25 13:16:53,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:16:53,613 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 148 [2018-07-25 13:16:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:53,614 INFO L225 Difference]: With dead ends: 154 [2018-07-25 13:16:53,614 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 13:16:53,616 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8325, Invalid=13727, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:16:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 13:16:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2018-07-25 13:16:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 13:16:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 13:16:53,623 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 13:16:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:53,623 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 13:16:53,623 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:16:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 13:16:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 13:16:53,624 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:53,624 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 13:16:53,624 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2090240373, now seen corresponding path program 73 times [2018-07-25 13:16:53,625 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:53,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:53,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:16:53,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:16:53,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:16:53,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:16:53,907 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 77 states. [2018-07-25 13:16:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:54,139 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-25 13:16:54,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:16:54,139 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 150 [2018-07-25 13:16:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:54,140 INFO L225 Difference]: With dead ends: 156 [2018-07-25 13:16:54,140 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 13:16:54,142 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8550, Invalid=14100, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:16:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 13:16:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2018-07-25 13:16:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 13:16:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 13:16:54,147 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 13:16:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:54,148 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 13:16:54,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:16:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 13:16:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 13:16:54,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:54,149 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 13:16:54,149 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1323749377, now seen corresponding path program 74 times [2018-07-25 13:16:54,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:54,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:54,295 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:16:54,295 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:16:54,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:16:54,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:16:54,296 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 78 states. [2018-07-25 13:16:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:54,569 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-25 13:16:54,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:16:54,569 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 152 [2018-07-25 13:16:54,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:54,570 INFO L225 Difference]: With dead ends: 158 [2018-07-25 13:16:54,570 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 13:16:54,572 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=14478, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:16:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 13:16:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2018-07-25 13:16:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 13:16:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 13:16:54,578 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 13:16:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:54,579 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 13:16:54,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:16:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 13:16:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 13:16:54,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:54,580 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 13:16:54,580 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash -812884983, now seen corresponding path program 75 times [2018-07-25 13:16:54,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:54,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:54,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:16:54,746 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:16:54,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:16:54,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:16:54,747 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 79 states. [2018-07-25 13:16:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:55,053 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-25 13:16:55,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:16:55,053 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 154 [2018-07-25 13:16:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:55,054 INFO L225 Difference]: With dead ends: 160 [2018-07-25 13:16:55,054 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 13:16:55,055 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:16:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 13:16:55,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2018-07-25 13:16:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 13:16:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 13:16:55,063 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 13:16:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:55,063 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 13:16:55,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:16:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 13:16:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 13:16:55,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:55,065 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 13:16:55,065 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash 501525907, now seen corresponding path program 76 times [2018-07-25 13:16:55,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:55,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:55,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:16:55,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:16:55,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:16:55,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:16:55,243 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 80 states. [2018-07-25 13:16:55,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:55,561 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-25 13:16:55,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:16:55,561 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 156 [2018-07-25 13:16:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:55,562 INFO L225 Difference]: With dead ends: 162 [2018-07-25 13:16:55,562 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 13:16:55,564 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9243, Invalid=15249, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:16:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 13:16:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2018-07-25 13:16:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 13:16:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 13:16:55,572 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 13:16:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:55,572 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 13:16:55,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:16:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 13:16:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 13:16:55,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:55,573 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 13:16:55,573 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:55,574 INFO L82 PathProgramCache]: Analyzing trace with hash 930006173, now seen corresponding path program 77 times [2018-07-25 13:16:55,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:55,740 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:55,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:16:55,740 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:16:55,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:16:55,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:16:55,741 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 81 states. [2018-07-25 13:16:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:56,133 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-25 13:16:56,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:16:56,133 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 158 [2018-07-25 13:16:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:56,135 INFO L225 Difference]: With dead ends: 164 [2018-07-25 13:16:56,135 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 13:16:56,136 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9480, Invalid=15642, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:16:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 13:16:56,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2018-07-25 13:16:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 13:16:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 13:16:56,146 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 13:16:56,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:56,147 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 13:16:56,147 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:16:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 13:16:56,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 13:16:56,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:56,148 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 13:16:56,148 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:56,149 INFO L82 PathProgramCache]: Analyzing trace with hash 382681383, now seen corresponding path program 78 times [2018-07-25 13:16:56,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:56,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:56,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:16:56,409 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:16:56,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:16:56,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:16:56,410 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 82 states. [2018-07-25 13:16:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:56,699 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-25 13:16:56,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:16:56,699 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 160 [2018-07-25 13:16:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:56,700 INFO L225 Difference]: With dead ends: 166 [2018-07-25 13:16:56,700 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 13:16:56,702 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:16:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 13:16:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2018-07-25 13:16:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 13:16:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 13:16:56,709 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 13:16:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:56,709 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 13:16:56,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:16:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 13:16:56,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 13:16:56,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:56,710 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 13:16:56,710 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:56,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1610431695, now seen corresponding path program 79 times [2018-07-25 13:16:56,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:56,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:56,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:16:56,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:16:56,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:16:56,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:16:56,877 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 83 states. [2018-07-25 13:16:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:57,176 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-25 13:16:57,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:16:57,176 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 162 [2018-07-25 13:16:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:57,177 INFO L225 Difference]: With dead ends: 168 [2018-07-25 13:16:57,177 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 13:16:57,178 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:16:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 13:16:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2018-07-25 13:16:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 13:16:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 13:16:57,183 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 13:16:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:57,184 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 13:16:57,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:16:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 13:16:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 13:16:57,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:57,184 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 13:16:57,185 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:57,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1436685637, now seen corresponding path program 80 times [2018-07-25 13:16:57,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:57,480 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:57,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:16:57,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:16:57,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:16:57,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:16:57,482 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 84 states. [2018-07-25 13:16:57,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:57,776 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-25 13:16:57,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:16:57,776 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 164 [2018-07-25 13:16:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:57,777 INFO L225 Difference]: With dead ends: 170 [2018-07-25 13:16:57,777 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 13:16:57,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:16:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 13:16:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2018-07-25 13:16:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 13:16:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 13:16:57,787 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 13:16:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:57,788 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 13:16:57,788 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:16:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 13:16:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 13:16:57,789 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:57,789 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 13:16:57,789 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:57,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1970448443, now seen corresponding path program 81 times [2018-07-25 13:16:57,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:57,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:57,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:16:57,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:16:57,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:16:57,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:16:57,988 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 85 states. [2018-07-25 13:16:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:58,295 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-25 13:16:58,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:16:58,295 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 166 [2018-07-25 13:16:58,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:58,296 INFO L225 Difference]: With dead ends: 172 [2018-07-25 13:16:58,296 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 13:16:58,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10458, Invalid=17264, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:16:58,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 13:16:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2018-07-25 13:16:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 13:16:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 13:16:58,302 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 13:16:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:58,302 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 13:16:58,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:16:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 13:16:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 13:16:58,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:58,303 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 13:16:58,303 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash 479570511, now seen corresponding path program 82 times [2018-07-25 13:16:58,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:58,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:58,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:16:58,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:16:58,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:16:58,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:16:58,489 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 86 states. [2018-07-25 13:16:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:58,830 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-25 13:16:58,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:16:58,831 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 168 [2018-07-25 13:16:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:58,831 INFO L225 Difference]: With dead ends: 174 [2018-07-25 13:16:58,831 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 13:16:58,833 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10710, Invalid=17682, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:16:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 13:16:58,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2018-07-25 13:16:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 13:16:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 13:16:58,839 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 13:16:58,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:58,839 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 13:16:58,839 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:16:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 13:16:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 13:16:58,839 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:58,840 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 13:16:58,840 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1305707097, now seen corresponding path program 83 times [2018-07-25 13:16:58,840 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:59,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:59,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:16:59,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:16:59,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:16:59,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:16:59,020 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 87 states. [2018-07-25 13:16:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:59,349 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-25 13:16:59,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:16:59,349 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 170 [2018-07-25 13:16:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:59,350 INFO L225 Difference]: With dead ends: 176 [2018-07-25 13:16:59,350 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 13:16:59,352 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:16:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 13:16:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2018-07-25 13:16:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 13:16:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 13:16:59,357 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 13:16:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:59,357 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 13:16:59,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:16:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 13:16:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 13:16:59,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:59,358 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 13:16:59,358 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:59,358 INFO L82 PathProgramCache]: Analyzing trace with hash 654016483, now seen corresponding path program 84 times [2018-07-25 13:16:59,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:59,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:59,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:16:59,544 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:16:59,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:16:59,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:16:59,545 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 88 states. [2018-07-25 13:17:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:00,129 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-25 13:17:00,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:17:00,130 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 172 [2018-07-25 13:17:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:00,131 INFO L225 Difference]: With dead ends: 178 [2018-07-25 13:17:00,131 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 13:17:00,133 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:17:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 13:17:00,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2018-07-25 13:17:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 13:17:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 13:17:00,142 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 13:17:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:00,142 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 13:17:00,142 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:17:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 13:17:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 13:17:00,143 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:00,143 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 13:17:00,144 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:00,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1444561645, now seen corresponding path program 85 times [2018-07-25 13:17:00,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:00,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:00,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:17:00,493 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:17:00,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:17:00,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:17:00,495 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 89 states. [2018-07-25 13:17:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:00,978 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-25 13:17:00,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:17:00,979 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 174 [2018-07-25 13:17:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:00,980 INFO L225 Difference]: With dead ends: 180 [2018-07-25 13:17:00,980 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 13:17:00,982 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:17:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 13:17:00,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2018-07-25 13:17:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 13:17:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 13:17:00,990 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 13:17:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:00,990 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 13:17:00,990 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:17:00,991 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 13:17:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 13:17:00,991 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:00,992 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 13:17:00,992 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:00,992 INFO L82 PathProgramCache]: Analyzing trace with hash 949250935, now seen corresponding path program 86 times [2018-07-25 13:17:00,992 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:01,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:01,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:17:01,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:17:01,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:17:01,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:17:01,260 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 90 states. [2018-07-25 13:17:01,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:01,802 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-25 13:17:01,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:17:01,802 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 176 [2018-07-25 13:17:01,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:01,803 INFO L225 Difference]: With dead ends: 182 [2018-07-25 13:17:01,803 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 13:17:01,805 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:17:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 13:17:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2018-07-25 13:17:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 13:17:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 13:17:01,813 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 13:17:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:01,814 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 13:17:01,814 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:17:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 13:17:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 13:17:01,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:01,815 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 13:17:01,815 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:01,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1697028481, now seen corresponding path program 87 times [2018-07-25 13:17:01,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:02,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:02,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:17:02,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:17:02,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:17:02,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:17:02,156 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 91 states. [2018-07-25 13:17:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:02,467 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-25 13:17:02,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:17:02,467 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 178 [2018-07-25 13:17:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:02,468 INFO L225 Difference]: With dead ends: 184 [2018-07-25 13:17:02,468 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 13:17:02,470 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:17:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 13:17:02,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2018-07-25 13:17:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 13:17:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 13:17:02,479 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 13:17:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:02,479 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 13:17:02,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:17:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 13:17:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 13:17:02,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:02,480 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 13:17:02,480 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:02,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1243255541, now seen corresponding path program 88 times [2018-07-25 13:17:02,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:02,694 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:02,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:17:02,695 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:17:02,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:17:02,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:17:02,696 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 92 states. [2018-07-25 13:17:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:03,053 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-25 13:17:03,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:17:03,053 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 180 [2018-07-25 13:17:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:03,054 INFO L225 Difference]: With dead ends: 186 [2018-07-25 13:17:03,054 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 13:17:03,055 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:17:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 13:17:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2018-07-25 13:17:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 13:17:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 13:17:03,064 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 13:17:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:03,064 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 13:17:03,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:17:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 13:17:03,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 13:17:03,065 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:03,065 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 13:17:03,065 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:03,065 INFO L82 PathProgramCache]: Analyzing trace with hash -767719915, now seen corresponding path program 89 times [2018-07-25 13:17:03,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:03,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:03,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:17:03,272 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:17:03,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:17:03,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:17:03,273 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 93 states. [2018-07-25 13:17:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:03,628 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-25 13:17:03,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:17:03,628 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 182 [2018-07-25 13:17:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:03,629 INFO L225 Difference]: With dead ends: 188 [2018-07-25 13:17:03,629 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 13:17:03,631 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12558, Invalid=20748, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:17:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 13:17:03,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2018-07-25 13:17:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 13:17:03,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 13:17:03,636 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 13:17:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:03,637 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 13:17:03,637 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:17:03,637 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 13:17:03,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 13:17:03,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:03,638 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 13:17:03,638 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:03,638 INFO L82 PathProgramCache]: Analyzing trace with hash 955483295, now seen corresponding path program 90 times [2018-07-25 13:17:03,638 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:03,874 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:03,874 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:17:03,874 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:17:03,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:17:03,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:17:03,875 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 94 states. [2018-07-25 13:17:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:04,261 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-25 13:17:04,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:17:04,261 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 184 [2018-07-25 13:17:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:04,262 INFO L225 Difference]: With dead ends: 190 [2018-07-25 13:17:04,262 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 13:17:04,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12834, Invalid=21206, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:17:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 13:17:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2018-07-25 13:17:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 13:17:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 13:17:04,273 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 13:17:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:04,273 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 13:17:04,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:17:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 13:17:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 13:17:04,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:04,275 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 13:17:04,275 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:04,275 INFO L82 PathProgramCache]: Analyzing trace with hash -903608151, now seen corresponding path program 91 times [2018-07-25 13:17:04,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:04,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:04,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:17:04,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:17:04,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:17:04,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:17:04,721 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 95 states. [2018-07-25 13:17:05,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:05,141 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-25 13:17:05,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:17:05,141 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 186 [2018-07-25 13:17:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:05,142 INFO L225 Difference]: With dead ends: 192 [2018-07-25 13:17:05,142 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 13:17:05,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4277 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:17:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 13:17:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2018-07-25 13:17:05,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 13:17:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 13:17:05,152 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 13:17:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:05,152 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 13:17:05,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:17:05,153 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 13:17:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 13:17:05,153 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:05,154 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 13:17:05,154 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:05,154 INFO L82 PathProgramCache]: Analyzing trace with hash -784092621, now seen corresponding path program 92 times [2018-07-25 13:17:05,154 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:05,363 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:05,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:17:05,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:17:05,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:17:05,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:17:05,364 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 96 states. [2018-07-25 13:17:05,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:05,761 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-25 13:17:05,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:17:05,761 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 188 [2018-07-25 13:17:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:05,762 INFO L225 Difference]: With dead ends: 194 [2018-07-25 13:17:05,762 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 13:17:05,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4370 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13395, Invalid=22137, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:17:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 13:17:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2018-07-25 13:17:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 13:17:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 13:17:05,769 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 13:17:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:05,769 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 13:17:05,769 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:17:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 13:17:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 13:17:05,770 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:05,770 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 13:17:05,770 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:05,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1893785283, now seen corresponding path program 93 times [2018-07-25 13:17:05,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:05,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:05,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:17:05,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:17:05,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:17:05,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:17:05,990 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 97 states. [2018-07-25 13:17:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:06,450 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-25 13:17:06,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:17:06,451 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 190 [2018-07-25 13:17:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:06,452 INFO L225 Difference]: With dead ends: 196 [2018-07-25 13:17:06,452 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 13:17:06,454 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:17:06,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 13:17:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2018-07-25 13:17:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 13:17:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 13:17:06,463 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 13:17:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:06,463 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 13:17:06,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:17:06,464 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 13:17:06,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 13:17:06,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:06,465 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 13:17:06,465 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:06,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1138423239, now seen corresponding path program 94 times [2018-07-25 13:17:06,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:06,862 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:06,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:17:06,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:17:06,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:17:06,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:17:06,865 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 98 states. [2018-07-25 13:17:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:07,329 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-25 13:17:07,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:17:07,329 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 192 [2018-07-25 13:17:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:07,330 INFO L225 Difference]: With dead ends: 198 [2018-07-25 13:17:07,330 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 13:17:07,332 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:17:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 13:17:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2018-07-25 13:17:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 13:17:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 13:17:07,339 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 13:17:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:07,340 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 13:17:07,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:17:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 13:17:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 13:17:07,341 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:07,341 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 13:17:07,341 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1191981103, now seen corresponding path program 95 times [2018-07-25 13:17:07,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:07,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:07,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:17:07,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:17:07,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:17:07,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:17:07,650 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 99 states. [2018-07-25 13:17:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:08,251 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-25 13:17:08,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:17:08,251 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 194 [2018-07-25 13:17:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:08,252 INFO L225 Difference]: With dead ends: 200 [2018-07-25 13:17:08,252 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 13:17:08,253 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:17:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 13:17:08,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2018-07-25 13:17:08,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 13:17:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 13:17:08,260 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 13:17:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:08,260 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 13:17:08,261 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:17:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 13:17:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 13:17:08,262 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:08,262 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 13:17:08,262 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:08,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1262374747, now seen corresponding path program 96 times [2018-07-25 13:17:08,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:08,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:08,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:17:08,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:17:08,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:17:08,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:17:08,518 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 100 states. [2018-07-25 13:17:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:08,901 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-25 13:17:08,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:17:08,901 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 196 [2018-07-25 13:17:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:08,902 INFO L225 Difference]: With dead ends: 202 [2018-07-25 13:17:08,902 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 13:17:08,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14553, Invalid=24059, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:17:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 13:17:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2018-07-25 13:17:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 13:17:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 13:17:08,912 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 13:17:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:08,912 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 13:17:08,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:17:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 13:17:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 13:17:08,913 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:08,913 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 13:17:08,914 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:08,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1961301093, now seen corresponding path program 97 times [2018-07-25 13:17:08,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:09,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:09,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:17:09,171 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:17:09,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:17:09,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:17:09,172 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 101 states. [2018-07-25 13:17:09,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:09,600 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-25 13:17:09,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:17:09,600 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 198 [2018-07-25 13:17:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:09,601 INFO L225 Difference]: With dead ends: 204 [2018-07-25 13:17:09,601 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 13:17:09,602 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4850 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14850, Invalid=24552, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:17:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 13:17:09,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2018-07-25 13:17:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 13:17:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 13:17:09,608 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 13:17:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:09,608 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 13:17:09,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:17:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 13:17:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 13:17:09,609 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:09,609 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 13:17:09,609 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash -680345873, now seen corresponding path program 98 times [2018-07-25 13:17:09,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:09,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:09,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:17:09,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:17:09,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:17:09,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:17:09,855 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 102 states. [2018-07-25 13:17:10,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:10,297 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-25 13:17:10,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:17:10,297 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 200 [2018-07-25 13:17:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:10,298 INFO L225 Difference]: With dead ends: 206 [2018-07-25 13:17:10,298 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 13:17:10,299 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15150, Invalid=25050, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:17:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 13:17:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2018-07-25 13:17:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 13:17:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 13:17:10,305 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 13:17:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:10,305 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 13:17:10,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:17:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 13:17:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 13:17:10,306 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:10,306 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 13:17:10,306 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:10,306 INFO L82 PathProgramCache]: Analyzing trace with hash -977408263, now seen corresponding path program 99 times [2018-07-25 13:17:10,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:10,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:10,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:17:10,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:17:10,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:17:10,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:17:10,564 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 103 states. [2018-07-25 13:17:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:11,129 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-25 13:17:11,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:17:11,130 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 202 [2018-07-25 13:17:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:11,130 INFO L225 Difference]: With dead ends: 208 [2018-07-25 13:17:11,130 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 13:17:11,131 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:17:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 13:17:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2018-07-25 13:17:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 13:17:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 13:17:11,136 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 13:17:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:11,136 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 13:17:11,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:17:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 13:17:11,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 13:17:11,137 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:11,137 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 13:17:11,137 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:11,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1308443779, now seen corresponding path program 100 times [2018-07-25 13:17:11,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:11,525 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:11,525 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:17:11,525 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:17:11,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:17:11,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:17:11,527 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 104 states. [2018-07-25 13:17:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:11,995 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-25 13:17:11,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:17:11,996 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 204 [2018-07-25 13:17:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:11,997 INFO L225 Difference]: With dead ends: 210 [2018-07-25 13:17:11,997 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 13:17:11,999 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:17:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 13:17:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2018-07-25 13:17:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 13:17:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 13:17:12,006 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 13:17:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:12,006 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 13:17:12,006 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:17:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 13:17:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 13:17:12,007 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:12,007 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 13:17:12,008 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:12,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1010999411, now seen corresponding path program 101 times [2018-07-25 13:17:12,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:12,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:12,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:17:12,261 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:17:12,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:17:12,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:17:12,262 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 105 states. [2018-07-25 13:17:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:12,710 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-25 13:17:12,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:17:12,710 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 206 [2018-07-25 13:17:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:12,711 INFO L225 Difference]: With dead ends: 212 [2018-07-25 13:17:12,711 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 13:17:12,713 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:17:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 13:17:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2018-07-25 13:17:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 13:17:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 13:17:12,721 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 13:17:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:12,721 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 13:17:12,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:17:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 13:17:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 13:17:12,722 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:12,722 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 13:17:12,722 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:12,722 INFO L82 PathProgramCache]: Analyzing trace with hash -907878377, now seen corresponding path program 102 times [2018-07-25 13:17:12,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:12,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:12,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:17:12,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:17:12,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:17:12,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:17:12,988 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 106 states. [2018-07-25 13:17:13,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:13,462 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-25 13:17:13,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 13:17:13,462 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 208 [2018-07-25 13:17:13,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:13,463 INFO L225 Difference]: With dead ends: 214 [2018-07-25 13:17:13,463 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 13:17:13,466 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16380, Invalid=27092, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:17:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 13:17:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2018-07-25 13:17:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 13:17:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 13:17:13,474 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-25 13:17:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:13,475 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 13:17:13,475 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:17:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 13:17:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 13:17:13,476 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:13,476 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-25 13:17:13,476 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:13,476 INFO L82 PathProgramCache]: Analyzing trace with hash -592812511, now seen corresponding path program 103 times [2018-07-25 13:17:13,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:13,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:13,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:17:13,824 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:17:13,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:17:13,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:17:13,827 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 107 states. [2018-07-25 13:17:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:14,423 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-25 13:17:14,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:17:14,424 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 210 [2018-07-25 13:17:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:14,424 INFO L225 Difference]: With dead ends: 216 [2018-07-25 13:17:14,425 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 13:17:14,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:17:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 13:17:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2018-07-25 13:17:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 13:17:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 13:17:14,439 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-25 13:17:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:14,439 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 13:17:14,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:17:14,439 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 13:17:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 13:17:14,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:14,441 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-25 13:17:14,441 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:14,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1537773995, now seen corresponding path program 104 times [2018-07-25 13:17:14,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:14,858 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:14,858 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:17:14,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:17:14,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:17:14,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:17:14,860 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 108 states. [2018-07-25 13:17:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:15,293 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-25 13:17:15,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:17:15,293 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 212 [2018-07-25 13:17:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:15,294 INFO L225 Difference]: With dead ends: 218 [2018-07-25 13:17:15,294 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 13:17:15,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:17:15,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 13:17:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2018-07-25 13:17:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 13:17:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 13:17:15,305 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-25 13:17:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:15,305 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 13:17:15,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:17:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 13:17:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 13:17:15,306 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:15,307 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-25 13:17:15,307 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:15,307 INFO L82 PathProgramCache]: Analyzing trace with hash 332006069, now seen corresponding path program 105 times [2018-07-25 13:17:15,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:15,613 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:15,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:17:15,613 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:17:15,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:17:15,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:17:15,614 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 109 states. [2018-07-25 13:17:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:16,101 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-25 13:17:16,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:17:16,101 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 214 [2018-07-25 13:17:16,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:16,102 INFO L225 Difference]: With dead ends: 220 [2018-07-25 13:17:16,102 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 13:17:16,104 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:17:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 13:17:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2018-07-25 13:17:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 13:17:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 13:17:16,109 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-25 13:17:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:16,110 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 13:17:16,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:17:16,110 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 13:17:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 13:17:16,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:16,110 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-25 13:17:16,111 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:16,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1230199103, now seen corresponding path program 106 times [2018-07-25 13:17:16,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:16,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:16,391 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:17:16,391 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:17:16,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:17:16,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:17:16,392 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 110 states. [2018-07-25 13:17:16,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:16,918 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-25 13:17:16,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 13:17:16,918 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 216 [2018-07-25 13:17:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:16,918 INFO L225 Difference]: With dead ends: 222 [2018-07-25 13:17:16,918 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 13:17:16,920 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5777 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17658, Invalid=29214, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 13:17:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 13:17:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2018-07-25 13:17:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 13:17:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 13:17:16,926 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-25 13:17:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:16,926 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 13:17:16,926 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:17:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 13:17:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 13:17:16,927 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:16,927 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-25 13:17:16,927 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:16,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1105278281, now seen corresponding path program 107 times [2018-07-25 13:17:16,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:17,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:17,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:17:17,221 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:17:17,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:17:17,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:17:17,223 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 111 states. [2018-07-25 13:17:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:17,782 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-25 13:17:17,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:17:17,783 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 218 [2018-07-25 13:17:17,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:17,783 INFO L225 Difference]: With dead ends: 224 [2018-07-25 13:17:17,783 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 13:17:17,785 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5885 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 13:17:17,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 13:17:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2018-07-25 13:17:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 13:17:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 13:17:17,794 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-25 13:17:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:17,794 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 13:17:17,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:17:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 13:17:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 13:17:17,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:17,795 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-25 13:17:17,795 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:17,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1315452627, now seen corresponding path program 108 times [2018-07-25 13:17:17,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:18,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:18,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:17:18,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:17:18,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:17:18,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:17:18,185 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 112 states. [2018-07-25 13:17:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:18,673 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-25 13:17:18,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:17:18,674 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 220 [2018-07-25 13:17:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:18,674 INFO L225 Difference]: With dead ends: 226 [2018-07-25 13:17:18,674 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 13:17:18,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5994 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18315, Invalid=30305, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:17:18,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 13:17:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2018-07-25 13:17:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 13:17:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 13:17:18,684 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-25 13:17:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:18,685 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 13:17:18,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:17:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 13:17:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 13:17:18,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:18,686 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-25 13:17:18,686 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:18,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1429536221, now seen corresponding path program 109 times [2018-07-25 13:17:18,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:18,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:18,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 13:17:18,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 13:17:18,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 13:17:18,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:17:18,989 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 113 states. [2018-07-25 13:17:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:19,523 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-25 13:17:19,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:17:19,523 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 222 [2018-07-25 13:17:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:19,524 INFO L225 Difference]: With dead ends: 228 [2018-07-25 13:17:19,524 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 13:17:19,526 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 13:17:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 13:17:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2018-07-25 13:17:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 13:17:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 13:17:19,532 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-25 13:17:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:19,532 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 13:17:19,532 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 13:17:19,532 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 13:17:19,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 13:17:19,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:19,533 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-25 13:17:19,533 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:19,533 INFO L82 PathProgramCache]: Analyzing trace with hash -605279641, now seen corresponding path program 110 times [2018-07-25 13:17:19,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:19,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:19,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:17:19,831 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:17:19,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:17:19,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:17:19,832 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 114 states. [2018-07-25 13:17:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:20,398 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-25 13:17:20,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 13:17:20,398 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 224 [2018-07-25 13:17:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:20,399 INFO L225 Difference]: With dead ends: 230 [2018-07-25 13:17:20,399 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 13:17:20,401 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 13:17:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 13:17:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2018-07-25 13:17:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 13:17:20,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 13:17:20,406 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-25 13:17:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:20,406 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 13:17:20,406 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:17:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 13:17:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 13:17:20,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:20,407 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-25 13:17:20,407 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:20,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1853203343, now seen corresponding path program 111 times [2018-07-25 13:17:20,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:20,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:20,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 13:17:20,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 13:17:20,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 13:17:20,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 13:17:20,733 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 115 states. [2018-07-25 13:17:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:21,294 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-25 13:17:21,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:17:21,294 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 226 [2018-07-25 13:17:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:21,295 INFO L225 Difference]: With dead ends: 232 [2018-07-25 13:17:21,295 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 13:17:21,296 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 13:17:21,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 13:17:21,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2018-07-25 13:17:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 13:17:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 13:17:21,304 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-25 13:17:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:21,305 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 13:17:21,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 13:17:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 13:17:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 13:17:21,306 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:21,306 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-25 13:17:21,306 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:21,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1482961915, now seen corresponding path program 112 times [2018-07-25 13:17:21,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:21,617 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:21,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:17:21,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:17:21,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:17:21,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:17:21,618 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 116 states. [2018-07-25 13:17:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:22,168 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-25 13:17:22,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:17:22,168 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 228 [2018-07-25 13:17:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:22,169 INFO L225 Difference]: With dead ends: 234 [2018-07-25 13:17:22,169 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 13:17:22,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 13:17:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 13:17:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2018-07-25 13:17:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 13:17:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 13:17:22,180 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-25 13:17:22,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:22,181 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 13:17:22,181 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:17:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 13:17:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 13:17:22,182 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:22,182 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-25 13:17:22,182 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:22,182 INFO L82 PathProgramCache]: Analyzing trace with hash -802795259, now seen corresponding path program 113 times [2018-07-25 13:17:22,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:22,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:22,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 13:17:22,506 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 13:17:22,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 13:17:22,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 13:17:22,507 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 117 states. [2018-07-25 13:17:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:23,097 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-25 13:17:23,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:17:23,097 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 230 [2018-07-25 13:17:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:23,097 INFO L225 Difference]: With dead ends: 236 [2018-07-25 13:17:23,097 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 13:17:23,101 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 13:17:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 13:17:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2018-07-25 13:17:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 13:17:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 13:17:23,107 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-25 13:17:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:23,107 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 13:17:23,107 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 13:17:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 13:17:23,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 13:17:23,107 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:23,108 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-25 13:17:23,108 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1607816079, now seen corresponding path program 114 times [2018-07-25 13:17:23,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:23,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:23,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:17:23,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:17:23,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:17:23,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:17:23,434 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 118 states. [2018-07-25 13:17:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:24,071 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-25 13:17:24,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 13:17:24,071 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 232 [2018-07-25 13:17:24,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:24,072 INFO L225 Difference]: With dead ends: 238 [2018-07-25 13:17:24,072 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 13:17:24,074 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 13:17:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 13:17:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2018-07-25 13:17:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 13:17:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 13:17:24,080 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-25 13:17:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:24,080 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 13:17:24,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:17:24,080 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 13:17:24,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 13:17:24,081 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:24,081 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-25 13:17:24,081 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:24,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1077027943, now seen corresponding path program 115 times [2018-07-25 13:17:24,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:24,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:24,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 13:17:24,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 13:17:24,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 13:17:24,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:17:24,479 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 119 states. [2018-07-25 13:17:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:25,043 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-25 13:17:25,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:17:25,043 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 234 [2018-07-25 13:17:25,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:25,043 INFO L225 Difference]: With dead ends: 240 [2018-07-25 13:17:25,043 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 13:17:25,047 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6785 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 13:17:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 13:17:25,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2018-07-25 13:17:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 13:17:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 13:17:25,053 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-25 13:17:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:25,053 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 13:17:25,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 13:17:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 13:17:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 13:17:25,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:25,054 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-25 13:17:25,054 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:25,054 INFO L82 PathProgramCache]: Analyzing trace with hash 63211811, now seen corresponding path program 116 times [2018-07-25 13:17:25,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:25,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:25,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:17:25,397 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:17:25,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:17:25,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:17:25,398 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 120 states. [2018-07-25 13:17:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:26,021 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-07-25 13:17:26,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:17:26,021 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 236 [2018-07-25 13:17:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:26,021 INFO L225 Difference]: With dead ends: 242 [2018-07-25 13:17:26,022 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 13:17:26,024 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 13:17:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 13:17:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2018-07-25 13:17:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 13:17:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 13:17:26,030 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-25 13:17:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:26,030 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 13:17:26,030 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:17:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 13:17:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 13:17:26,031 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:26,031 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-25 13:17:26,031 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:26,031 INFO L82 PathProgramCache]: Analyzing trace with hash 616954925, now seen corresponding path program 117 times [2018-07-25 13:17:26,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:26,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:26,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 13:17:26,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 13:17:26,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 13:17:26,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 13:17:26,380 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 121 states. [2018-07-25 13:17:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:27,036 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-07-25 13:17:27,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:17:27,036 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 238 [2018-07-25 13:17:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:27,036 INFO L225 Difference]: With dead ends: 244 [2018-07-25 13:17:27,037 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 13:17:27,040 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 13:17:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 13:17:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2018-07-25 13:17:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 13:17:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 13:17:27,048 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-25 13:17:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:27,049 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 13:17:27,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 13:17:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 13:17:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 13:17:27,050 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:27,050 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-25 13:17:27,050 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash 188142775, now seen corresponding path program 118 times [2018-07-25 13:17:27,051 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:27,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:27,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:17:27,471 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:17:27,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:17:27,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:17:27,472 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 122 states. [2018-07-25 13:17:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:28,037 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-07-25 13:17:28,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 13:17:28,037 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 240 [2018-07-25 13:17:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:28,038 INFO L225 Difference]: With dead ends: 246 [2018-07-25 13:17:28,038 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 13:17:28,041 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 13:17:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 13:17:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2018-07-25 13:17:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 13:17:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 13:17:28,048 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-25 13:17:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:28,048 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 13:17:28,048 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:17:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 13:17:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 13:17:28,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:28,049 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-25 13:17:28,049 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:28,049 INFO L82 PathProgramCache]: Analyzing trace with hash 416527041, now seen corresponding path program 119 times [2018-07-25 13:17:28,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:28,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:28,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 13:17:28,459 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 13:17:28,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 13:17:28,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 13:17:28,461 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 123 states. [2018-07-25 13:17:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:29,186 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-07-25 13:17:29,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:17:29,186 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 242 [2018-07-25 13:17:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:29,187 INFO L225 Difference]: With dead ends: 248 [2018-07-25 13:17:29,187 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 13:17:29,190 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7259 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 13:17:29,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 13:17:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2018-07-25 13:17:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 13:17:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 13:17:29,196 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-25 13:17:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:29,197 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 13:17:29,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 13:17:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 13:17:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 13:17:29,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:29,198 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-25 13:17:29,198 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:29,198 INFO L82 PathProgramCache]: Analyzing trace with hash 850474571, now seen corresponding path program 120 times [2018-07-25 13:17:29,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:29,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:29,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:17:29,619 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:17:29,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:17:29,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:17:29,621 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 124 states. [2018-07-25 13:17:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:30,440 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-07-25 13:17:30,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:17:30,440 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 244 [2018-07-25 13:17:30,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:30,441 INFO L225 Difference]: With dead ends: 250 [2018-07-25 13:17:30,441 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 13:17:30,445 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 13:17:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 13:17:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2018-07-25 13:17:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 13:17:30,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 13:17:30,452 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-25 13:17:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:30,452 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 13:17:30,453 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:17:30,453 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 13:17:30,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 13:17:30,453 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:30,453 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-25 13:17:30,454 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:30,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1262223189, now seen corresponding path program 121 times [2018-07-25 13:17:30,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:30,918 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:30,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 13:17:30,919 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 13:17:30,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 13:17:30,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:17:30,921 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 125 states. [2018-07-25 13:17:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:31,669 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-07-25 13:17:31,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:17:31,669 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 246 [2018-07-25 13:17:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:31,670 INFO L225 Difference]: With dead ends: 252 [2018-07-25 13:17:31,670 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 13:17:31,673 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 13:17:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 13:17:31,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2018-07-25 13:17:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 13:17:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 13:17:31,681 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-25 13:17:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:31,681 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 13:17:31,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 13:17:31,681 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 13:17:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 13:17:31,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:31,682 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-25 13:17:31,682 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:31,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1815653855, now seen corresponding path program 122 times [2018-07-25 13:17:31,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:32,119 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:32,119 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 13:17:32,120 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 13:17:32,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 13:17:32,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:17:32,122 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 126 states. [2018-07-25 13:17:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:32,904 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-07-25 13:17:32,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 13:17:32,904 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 248 [2018-07-25 13:17:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:32,905 INFO L225 Difference]: With dead ends: 254 [2018-07-25 13:17:32,905 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 13:17:32,909 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 13:17:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 13:17:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2018-07-25 13:17:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 13:17:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 13:17:32,915 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-25 13:17:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:32,916 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 13:17:32,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 13:17:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 13:17:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 13:17:32,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:32,917 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-25 13:17:32,917 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:32,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1086579177, now seen corresponding path program 123 times [2018-07-25 13:17:32,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:33,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:33,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 13:17:33,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 13:17:33,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 13:17:33,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 13:17:33,441 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 127 states. [2018-07-25 13:17:34,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:34,323 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-07-25 13:17:34,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:17:34,324 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 250 [2018-07-25 13:17:34,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:34,324 INFO L225 Difference]: With dead ends: 256 [2018-07-25 13:17:34,324 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 13:17:34,328 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 13:17:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 13:17:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2018-07-25 13:17:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 13:17:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 13:17:34,334 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-25 13:17:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:34,335 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 13:17:34,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 13:17:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 13:17:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 13:17:34,336 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:34,336 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-25 13:17:34,336 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:34,336 INFO L82 PathProgramCache]: Analyzing trace with hash 525482867, now seen corresponding path program 124 times [2018-07-25 13:17:34,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:34,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:34,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:17:34,839 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:17:34,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:17:34,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:17:34,841 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 128 states. [2018-07-25 13:17:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:35,580 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-07-25 13:17:35,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:17:35,580 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 252 [2018-07-25 13:17:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:35,581 INFO L225 Difference]: With dead ends: 258 [2018-07-25 13:17:35,581 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 13:17:35,584 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756 [2018-07-25 13:17:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 13:17:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2018-07-25 13:17:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 13:17:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 13:17:35,590 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-25 13:17:35,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:35,590 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 13:17:35,591 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:17:35,591 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 13:17:35,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 13:17:35,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:35,592 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-25 13:17:35,592 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:35,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1817159043, now seen corresponding path program 125 times [2018-07-25 13:17:35,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:36,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:36,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 13:17:36,051 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 13:17:36,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 13:17:36,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 13:17:36,053 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 129 states. [2018-07-25 13:17:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:36,899 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-07-25 13:17:36,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:17:36,900 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 254 [2018-07-25 13:17:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:36,900 INFO L225 Difference]: With dead ends: 260 [2018-07-25 13:17:36,900 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 13:17:36,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770 [2018-07-25 13:17:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 13:17:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2018-07-25 13:17:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 13:17:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 13:17:36,911 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-25 13:17:36,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:36,911 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 13:17:36,912 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 13:17:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 13:17:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 13:17:36,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:36,913 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-25 13:17:36,913 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:36,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1761795847, now seen corresponding path program 126 times [2018-07-25 13:17:36,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:37,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:37,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 13:17:37,426 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 13:17:37,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 13:17:37,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:17:37,428 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 130 states. [2018-07-25 13:17:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:38,320 INFO L93 Difference]: Finished difference Result 262 states and 262 transitions. [2018-07-25 13:17:38,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 13:17:38,321 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 256 [2018-07-25 13:17:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:38,321 INFO L225 Difference]: With dead ends: 262 [2018-07-25 13:17:38,321 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 13:17:38,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 13:17:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 13:17:38,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2018-07-25 13:17:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 13:17:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-25 13:17:38,332 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-25 13:17:38,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:38,332 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-25 13:17:38,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 13:17:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-25 13:17:38,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 13:17:38,333 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:38,333 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-25 13:17:38,334 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:38,334 INFO L82 PathProgramCache]: Analyzing trace with hash 868641041, now seen corresponding path program 127 times [2018-07-25 13:17:38,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:38,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:38,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 13:17:38,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 13:17:38,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 13:17:38,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:17:38,805 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 131 states. [2018-07-25 13:17:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:39,516 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2018-07-25 13:17:39,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:17:39,516 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 258 [2018-07-25 13:17:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:39,517 INFO L225 Difference]: With dead ends: 264 [2018-07-25 13:17:39,517 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 13:17:39,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2018-07-25 13:17:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 13:17:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2018-07-25 13:17:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 13:17:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-25 13:17:39,527 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-25 13:17:39,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:39,527 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-25 13:17:39,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 13:17:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-25 13:17:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 13:17:39,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:39,529 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-25 13:17:39,529 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1540331675, now seen corresponding path program 128 times [2018-07-25 13:17:39,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:39,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:39,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:17:39,937 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:17:39,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:17:39,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:17:39,939 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 132 states. [2018-07-25 13:17:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:40,681 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2018-07-25 13:17:40,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:17:40,682 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 260 [2018-07-25 13:17:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:40,682 INFO L225 Difference]: With dead ends: 266 [2018-07-25 13:17:40,682 INFO L226 Difference]: Without dead ends: 264 [2018-07-25 13:17:40,686 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8384 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25545, Invalid=42315, Unknown=0, NotChecked=0, Total=67860 [2018-07-25 13:17:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-07-25 13:17:40,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2018-07-25 13:17:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 13:17:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-25 13:17:40,695 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-25 13:17:40,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:40,696 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-25 13:17:40,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:17:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-25 13:17:40,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 13:17:40,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:40,697 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-25 13:17:40,697 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1505030747, now seen corresponding path program 129 times [2018-07-25 13:17:40,697 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:41,139 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:41,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 13:17:41,139 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 13:17:41,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 13:17:41,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 13:17:41,141 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 133 states. [2018-07-25 13:17:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:41,986 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2018-07-25 13:17:41,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:17:41,986 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 262 [2018-07-25 13:17:41,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:41,987 INFO L225 Difference]: With dead ends: 268 [2018-07-25 13:17:41,987 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 13:17:41,988 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8514 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25938, Invalid=42968, Unknown=0, NotChecked=0, Total=68906 [2018-07-25 13:17:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 13:17:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2018-07-25 13:17:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 13:17:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-25 13:17:41,994 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-25 13:17:41,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:41,994 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-25 13:17:41,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 13:17:41,994 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-25 13:17:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 13:17:41,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:41,995 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-25 13:17:41,995 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:41,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1069377583, now seen corresponding path program 130 times [2018-07-25 13:17:41,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:42,420 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:42,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 13:17:42,420 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 13:17:42,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 13:17:42,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:17:42,422 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 134 states. [2018-07-25 13:17:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:43,181 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2018-07-25 13:17:43,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 13:17:43,181 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 264 [2018-07-25 13:17:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:43,182 INFO L225 Difference]: With dead ends: 270 [2018-07-25 13:17:43,182 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 13:17:43,185 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26334, Invalid=43626, Unknown=0, NotChecked=0, Total=69960 [2018-07-25 13:17:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 13:17:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2018-07-25 13:17:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 13:17:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-25 13:17:43,194 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-25 13:17:43,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:43,195 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-25 13:17:43,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 13:17:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-25 13:17:43,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 13:17:43,196 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:43,196 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-25 13:17:43,196 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:43,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1174620217, now seen corresponding path program 131 times [2018-07-25 13:17:43,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:43,655 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:43,655 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 13:17:43,655 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 13:17:43,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 13:17:43,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 13:17:43,657 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 135 states. [2018-07-25 13:17:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:44,450 INFO L93 Difference]: Finished difference Result 272 states and 272 transitions. [2018-07-25 13:17:44,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:17:44,450 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 266 [2018-07-25 13:17:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:44,451 INFO L225 Difference]: With dead ends: 272 [2018-07-25 13:17:44,451 INFO L226 Difference]: Without dead ends: 270 [2018-07-25 13:17:44,454 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8777 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2018-07-25 13:17:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-07-25 13:17:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2018-07-25 13:17:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 13:17:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-25 13:17:44,460 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-25 13:17:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:44,460 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-25 13:17:44,460 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 13:17:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-25 13:17:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 13:17:44,461 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:44,461 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-25 13:17:44,461 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash -766423613, now seen corresponding path program 132 times [2018-07-25 13:17:44,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:44,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:44,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:17:44,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:17:44,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:17:44,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:17:44,920 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 136 states. [2018-07-25 13:17:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:45,674 INFO L93 Difference]: Finished difference Result 274 states and 274 transitions. [2018-07-25 13:17:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:17:45,674 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 268 [2018-07-25 13:17:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:45,675 INFO L225 Difference]: With dead ends: 274 [2018-07-25 13:17:45,675 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 13:17:45,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8910 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27135, Invalid=44957, Unknown=0, NotChecked=0, Total=72092 [2018-07-25 13:17:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 13:17:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2018-07-25 13:17:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 13:17:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-25 13:17:45,683 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-25 13:17:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:45,684 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-25 13:17:45,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:17:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-25 13:17:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 13:17:45,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:45,684 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-25 13:17:45,685 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:45,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2093737779, now seen corresponding path program 133 times [2018-07-25 13:17:45,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:46,206 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:46,206 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 13:17:46,206 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 13:17:46,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 13:17:46,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 13:17:46,209 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 137 states. [2018-07-25 13:17:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:47,030 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2018-07-25 13:17:47,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:17:47,030 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 270 [2018-07-25 13:17:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:47,031 INFO L225 Difference]: With dead ends: 276 [2018-07-25 13:17:47,031 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 13:17:47,034 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9044 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27540, Invalid=45630, Unknown=0, NotChecked=0, Total=73170 [2018-07-25 13:17:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 13:17:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2018-07-25 13:17:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 13:17:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-25 13:17:47,040 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-25 13:17:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:47,040 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-25 13:17:47,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 13:17:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-25 13:17:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 13:17:47,041 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:47,041 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-25 13:17:47,041 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:47,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2037364393, now seen corresponding path program 134 times [2018-07-25 13:17:47,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:47,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:47,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 13:17:47,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 13:17:47,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 13:17:47,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:17:47,500 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 138 states. [2018-07-25 13:17:48,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:48,388 INFO L93 Difference]: Finished difference Result 278 states and 278 transitions. [2018-07-25 13:17:48,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 13:17:48,389 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 272 [2018-07-25 13:17:48,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:48,389 INFO L225 Difference]: With dead ends: 278 [2018-07-25 13:17:48,390 INFO L226 Difference]: Without dead ends: 276 [2018-07-25 13:17:48,395 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9179 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27948, Invalid=46308, Unknown=0, NotChecked=0, Total=74256 [2018-07-25 13:17:48,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-07-25 13:17:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2018-07-25 13:17:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 13:17:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-25 13:17:48,405 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-25 13:17:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:48,406 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-25 13:17:48,406 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 13:17:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-25 13:17:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 13:17:48,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:48,407 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-25 13:17:48,407 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash 597852001, now seen corresponding path program 135 times [2018-07-25 13:17:48,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:48,964 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:48,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 13:17:48,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 13:17:48,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 13:17:48,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 13:17:48,966 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 139 states. [2018-07-25 13:17:49,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:49,785 INFO L93 Difference]: Finished difference Result 280 states and 280 transitions. [2018-07-25 13:17:49,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:17:49,785 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 274 [2018-07-25 13:17:49,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:49,786 INFO L225 Difference]: With dead ends: 280 [2018-07-25 13:17:49,786 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 13:17:49,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9315 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2018-07-25 13:17:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 13:17:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2018-07-25 13:17:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 13:17:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-25 13:17:49,795 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-25 13:17:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:49,796 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-25 13:17:49,796 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 13:17:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-25 13:17:49,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 13:17:49,797 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:49,797 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-25 13:17:49,797 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash -989898005, now seen corresponding path program 136 times [2018-07-25 13:17:49,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:50,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:50,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:17:50,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:17:50,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:17:50,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:17:50,261 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 140 states. [2018-07-25 13:17:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:51,138 INFO L93 Difference]: Finished difference Result 282 states and 282 transitions. [2018-07-25 13:17:51,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:17:51,138 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 276 [2018-07-25 13:17:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:51,138 INFO L225 Difference]: With dead ends: 282 [2018-07-25 13:17:51,138 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 13:17:51,144 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9452 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28773, Invalid=47679, Unknown=0, NotChecked=0, Total=76452 [2018-07-25 13:17:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 13:17:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2018-07-25 13:17:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 13:17:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-25 13:17:51,155 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-25 13:17:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:51,155 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-25 13:17:51,155 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:17:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-25 13:17:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 13:17:51,156 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:51,156 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-25 13:17:51,156 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:51,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2104263691, now seen corresponding path program 137 times [2018-07-25 13:17:51,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:51,781 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:51,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 13:17:51,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 13:17:51,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 13:17:51,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 13:17:51,783 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 141 states. [2018-07-25 13:17:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:52,611 INFO L93 Difference]: Finished difference Result 284 states and 284 transitions. [2018-07-25 13:17:52,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:17:52,611 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 278 [2018-07-25 13:17:52,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:52,612 INFO L225 Difference]: With dead ends: 284 [2018-07-25 13:17:52,612 INFO L226 Difference]: Without dead ends: 282 [2018-07-25 13:17:52,615 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9590 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29190, Invalid=48372, Unknown=0, NotChecked=0, Total=77562 [2018-07-25 13:17:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-07-25 13:17:52,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2018-07-25 13:17:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 13:17:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-25 13:17:52,621 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-25 13:17:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:52,621 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-25 13:17:52,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 13:17:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-25 13:17:52,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 13:17:52,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:52,622 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-25 13:17:52,622 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:52,623 INFO L82 PathProgramCache]: Analyzing trace with hash 732136063, now seen corresponding path program 138 times [2018-07-25 13:17:52,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:53,118 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:53,118 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 13:17:53,118 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 13:17:53,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 13:17:53,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:17:53,120 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 142 states. [2018-07-25 13:17:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:54,021 INFO L93 Difference]: Finished difference Result 286 states and 286 transitions. [2018-07-25 13:17:54,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 13:17:54,021 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 280 [2018-07-25 13:17:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:54,022 INFO L225 Difference]: With dead ends: 286 [2018-07-25 13:17:54,022 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 13:17:54,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9729 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29610, Invalid=49070, Unknown=0, NotChecked=0, Total=78680 [2018-07-25 13:17:54,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 13:17:54,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 283. [2018-07-25 13:17:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 13:17:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-25 13:17:54,032 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-25 13:17:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:54,032 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-25 13:17:54,032 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 13:17:54,032 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-25 13:17:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 13:17:54,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:54,033 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-25 13:17:54,033 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:54,033 INFO L82 PathProgramCache]: Analyzing trace with hash -791933303, now seen corresponding path program 139 times [2018-07-25 13:17:54,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:54,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:54,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 13:17:54,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 13:17:54,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 13:17:54,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 13:17:54,523 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 143 states. [2018-07-25 13:17:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:55,483 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2018-07-25 13:17:55,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:17:55,484 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 282 [2018-07-25 13:17:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:55,484 INFO L225 Difference]: With dead ends: 288 [2018-07-25 13:17:55,485 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 13:17:55,487 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9869 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2018-07-25 13:17:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 13:17:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2018-07-25 13:17:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 13:17:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-25 13:17:55,493 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-25 13:17:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:55,493 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-25 13:17:55,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 13:17:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-25 13:17:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 13:17:55,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:55,494 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-25 13:17:55,494 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:55,494 INFO L82 PathProgramCache]: Analyzing trace with hash -838746093, now seen corresponding path program 140 times [2018-07-25 13:17:55,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:55,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:55,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:17:55,997 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:17:55,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:17:55,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:17:55,999 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 144 states. [2018-07-25 13:17:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:56,897 INFO L93 Difference]: Finished difference Result 290 states and 290 transitions. [2018-07-25 13:17:56,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:17:56,897 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 284 [2018-07-25 13:17:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:56,898 INFO L225 Difference]: With dead ends: 290 [2018-07-25 13:17:56,898 INFO L226 Difference]: Without dead ends: 288 [2018-07-25 13:17:56,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10010 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30459, Invalid=50481, Unknown=0, NotChecked=0, Total=80940 [2018-07-25 13:17:56,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-07-25 13:17:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2018-07-25 13:17:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 13:17:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-25 13:17:56,915 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-25 13:17:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:56,915 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-25 13:17:56,915 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:17:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-25 13:17:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 13:17:56,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:56,917 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-25 13:17:56,917 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:56,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1418802973, now seen corresponding path program 141 times [2018-07-25 13:17:56,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:57,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:57,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 13:17:57,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 13:17:57,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 13:17:57,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 13:17:57,452 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 145 states. [2018-07-25 13:17:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:58,403 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-07-25 13:17:58,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:17:58,403 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 286 [2018-07-25 13:17:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:58,404 INFO L225 Difference]: With dead ends: 292 [2018-07-25 13:17:58,404 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 13:17:58,407 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30888, Invalid=51194, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 13:17:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 13:17:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2018-07-25 13:17:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 13:17:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-25 13:17:58,414 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-25 13:17:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:58,414 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-25 13:17:58,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 13:17:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-25 13:17:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 13:17:58,415 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:58,415 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-25 13:17:58,415 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:58,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1964970919, now seen corresponding path program 142 times [2018-07-25 13:17:58,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:58,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:58,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 13:17:58,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 13:17:58,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 13:17:58,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:17:58,986 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 146 states. [2018-07-25 13:17:59,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:59,901 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2018-07-25 13:17:59,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 13:17:59,901 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 288 [2018-07-25 13:17:59,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:59,901 INFO L225 Difference]: With dead ends: 294 [2018-07-25 13:17:59,902 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 13:17:59,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10295 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31320, Invalid=51912, Unknown=0, NotChecked=0, Total=83232 [2018-07-25 13:17:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 13:17:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2018-07-25 13:17:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 13:17:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-25 13:17:59,913 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-25 13:17:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:59,913 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-25 13:17:59,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 13:17:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-25 13:17:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 13:17:59,914 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:59,914 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-25 13:17:59,914 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:59,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1448610383, now seen corresponding path program 143 times [2018-07-25 13:17:59,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:00,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:00,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 13:18:00,426 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 13:18:00,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 13:18:00,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 13:18:00,428 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 147 states. [2018-07-25 13:18:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:01,414 INFO L93 Difference]: Finished difference Result 296 states and 296 transitions. [2018-07-25 13:18:01,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:18:01,414 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 290 [2018-07-25 13:18:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:01,414 INFO L225 Difference]: With dead ends: 296 [2018-07-25 13:18:01,415 INFO L226 Difference]: Without dead ends: 294 [2018-07-25 13:18:01,418 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10439 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31755, Invalid=52635, Unknown=0, NotChecked=0, Total=84390 [2018-07-25 13:18:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-07-25 13:18:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2018-07-25 13:18:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 13:18:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-25 13:18:01,425 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-25 13:18:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:01,425 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-25 13:18:01,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 13:18:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-25 13:18:01,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 13:18:01,426 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:01,426 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-25 13:18:01,426 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:01,426 INFO L82 PathProgramCache]: Analyzing trace with hash -545227461, now seen corresponding path program 144 times [2018-07-25 13:18:01,426 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:02,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:02,032 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:18:02,032 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:18:02,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:18:02,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:18:02,034 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 148 states. [2018-07-25 13:18:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:02,971 INFO L93 Difference]: Finished difference Result 298 states and 298 transitions. [2018-07-25 13:18:02,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:18:02,972 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 292 [2018-07-25 13:18:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:02,972 INFO L225 Difference]: With dead ends: 298 [2018-07-25 13:18:02,972 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 13:18:02,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10584 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=32193, Invalid=53363, Unknown=0, NotChecked=0, Total=85556 [2018-07-25 13:18:02,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 13:18:02,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2018-07-25 13:18:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 13:18:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-25 13:18:02,983 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-25 13:18:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:02,983 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-25 13:18:02,984 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:18:02,984 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-25 13:18:02,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 13:18:02,984 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:02,984 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-25 13:18:02,985 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash 22366789, now seen corresponding path program 145 times [2018-07-25 13:18:02,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:03,505 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:03,505 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 13:18:03,505 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 13:18:03,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 13:18:03,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 13:18:03,507 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 149 states. [2018-07-25 13:18:04,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:04,535 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions. [2018-07-25 13:18:04,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:18:04,535 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 294 [2018-07-25 13:18:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:04,535 INFO L225 Difference]: With dead ends: 300 [2018-07-25 13:18:04,536 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 13:18:04,541 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10730 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=32634, Invalid=54096, Unknown=0, NotChecked=0, Total=86730 [2018-07-25 13:18:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 13:18:04,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2018-07-25 13:18:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 13:18:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-25 13:18:04,547 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-25 13:18:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:04,548 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-25 13:18:04,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 13:18:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-25 13:18:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 13:18:04,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:04,549 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-25 13:18:04,549 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:04,549 INFO L82 PathProgramCache]: Analyzing trace with hash 19594447, now seen corresponding path program 146 times [2018-07-25 13:18:04,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:05,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:05,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 13:18:05,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 13:18:05,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 13:18:05,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11028, Invalid=11322, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:18:05,158 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 150 states. [2018-07-25 13:18:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:06,146 INFO L93 Difference]: Finished difference Result 302 states and 302 transitions. [2018-07-25 13:18:06,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 13:18:06,147 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 296 [2018-07-25 13:18:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:06,147 INFO L225 Difference]: With dead ends: 302 [2018-07-25 13:18:06,147 INFO L226 Difference]: Without dead ends: 300 [2018-07-25 13:18:06,151 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10877 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33078, Invalid=54834, Unknown=0, NotChecked=0, Total=87912 [2018-07-25 13:18:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-07-25 13:18:06,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2018-07-25 13:18:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 13:18:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-25 13:18:06,157 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-25 13:18:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:06,158 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-25 13:18:06,158 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 13:18:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-25 13:18:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 13:18:06,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:06,158 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-25 13:18:06,159 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:06,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1650341081, now seen corresponding path program 147 times [2018-07-25 13:18:06,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:06,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:06,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 13:18:06,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 13:18:06,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 13:18:06,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 13:18:06,705 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 151 states. [2018-07-25 13:18:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:07,756 INFO L93 Difference]: Finished difference Result 304 states and 304 transitions. [2018-07-25 13:18:07,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:18:07,757 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 298 [2018-07-25 13:18:07,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:07,757 INFO L225 Difference]: With dead ends: 304 [2018-07-25 13:18:07,758 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 13:18:07,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33525, Invalid=55577, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 13:18:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 13:18:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2018-07-25 13:18:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 13:18:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-25 13:18:07,775 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-25 13:18:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:07,776 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-25 13:18:07,776 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 13:18:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-25 13:18:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 13:18:07,777 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:07,777 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-25 13:18:07,778 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:07,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1134793315, now seen corresponding path program 148 times [2018-07-25 13:18:07,778 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:08,501 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:08,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:18:08,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:18:08,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:18:08,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11327, Invalid=11625, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:18:08,503 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 152 states. [2018-07-25 13:18:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:09,457 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2018-07-25 13:18:09,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:18:09,458 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 300 [2018-07-25 13:18:09,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:09,458 INFO L225 Difference]: With dead ends: 306 [2018-07-25 13:18:09,458 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 13:18:09,462 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11174 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33975, Invalid=56325, Unknown=0, NotChecked=0, Total=90300 [2018-07-25 13:18:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 13:18:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2018-07-25 13:18:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 13:18:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-25 13:18:09,468 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-25 13:18:09,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:09,469 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-25 13:18:09,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:18:09,469 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-25 13:18:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 13:18:09,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:09,470 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-25 13:18:09,470 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash -385370771, now seen corresponding path program 149 times [2018-07-25 13:18:09,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:10,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:10,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 13:18:10,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 13:18:10,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 13:18:10,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11478, Invalid=11778, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 13:18:10,021 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 153 states. [2018-07-25 13:18:11,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:11,083 INFO L93 Difference]: Finished difference Result 308 states and 308 transitions. [2018-07-25 13:18:11,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:18:11,084 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 302 [2018-07-25 13:18:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:11,084 INFO L225 Difference]: With dead ends: 308 [2018-07-25 13:18:11,084 INFO L226 Difference]: Without dead ends: 306 [2018-07-25 13:18:11,088 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11324 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34428, Invalid=57078, Unknown=0, NotChecked=0, Total=91506 [2018-07-25 13:18:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-07-25 13:18:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2018-07-25 13:18:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 13:18:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-25 13:18:11,095 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-25 13:18:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:11,095 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-25 13:18:11,096 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 13:18:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-25 13:18:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 13:18:11,096 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:11,096 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-25 13:18:11,097 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:11,097 INFO L82 PathProgramCache]: Analyzing trace with hash -974176777, now seen corresponding path program 150 times [2018-07-25 13:18:11,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:11,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:11,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 13:18:11,718 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 13:18:11,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 13:18:11,719 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11630, Invalid=11932, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:18:11,720 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 154 states. [2018-07-25 13:18:12,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:12,726 INFO L93 Difference]: Finished difference Result 310 states and 310 transitions. [2018-07-25 13:18:12,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 13:18:12,727 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 304 [2018-07-25 13:18:12,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:12,727 INFO L225 Difference]: With dead ends: 310 [2018-07-25 13:18:12,727 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 13:18:12,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11475 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34884, Invalid=57836, Unknown=0, NotChecked=0, Total=92720 [2018-07-25 13:18:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 13:18:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2018-07-25 13:18:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 13:18:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-25 13:18:12,738 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-25 13:18:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:12,738 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-25 13:18:12,738 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 13:18:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-25 13:18:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 13:18:12,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:12,739 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-25 13:18:12,739 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash 118934529, now seen corresponding path program 151 times [2018-07-25 13:18:12,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:13,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:13,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 13:18:13,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 13:18:13,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 13:18:13,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:18:13,308 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 155 states. [2018-07-25 13:18:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:14,393 INFO L93 Difference]: Finished difference Result 312 states and 312 transitions. [2018-07-25 13:18:14,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:18:14,393 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 306 [2018-07-25 13:18:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:14,394 INFO L225 Difference]: With dead ends: 312 [2018-07-25 13:18:14,394 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 13:18:14,401 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11627 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=35343, Invalid=58599, Unknown=0, NotChecked=0, Total=93942 [2018-07-25 13:18:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 13:18:14,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2018-07-25 13:18:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 13:18:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-25 13:18:14,412 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-25 13:18:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:14,413 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-25 13:18:14,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 13:18:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-25 13:18:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 13:18:14,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:14,414 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-25 13:18:14,414 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1668087925, now seen corresponding path program 152 times [2018-07-25 13:18:14,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:15,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:15,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:18:15,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:18:15,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:18:15,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11937, Invalid=12243, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:18:15,105 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 156 states. [2018-07-25 13:18:16,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:16,110 INFO L93 Difference]: Finished difference Result 314 states and 314 transitions. [2018-07-25 13:18:16,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:18:16,110 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 308 [2018-07-25 13:18:16,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:16,111 INFO L225 Difference]: With dead ends: 314 [2018-07-25 13:18:16,111 INFO L226 Difference]: Without dead ends: 312 [2018-07-25 13:18:16,114 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11780 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=35805, Invalid=59367, Unknown=0, NotChecked=0, Total=95172 [2018-07-25 13:18:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-07-25 13:18:16,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2018-07-25 13:18:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 13:18:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-25 13:18:16,121 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-25 13:18:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:16,121 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-25 13:18:16,122 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:18:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-25 13:18:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 13:18:16,122 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:16,122 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-25 13:18:16,123 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1009747819, now seen corresponding path program 153 times [2018-07-25 13:18:16,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:16,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:16,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 13:18:16,712 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 13:18:16,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 13:18:16,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12092, Invalid=12400, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 13:18:16,714 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 157 states. [2018-07-25 13:18:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:17,870 INFO L93 Difference]: Finished difference Result 316 states and 316 transitions. [2018-07-25 13:18:17,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:18:17,870 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 310 [2018-07-25 13:18:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:17,870 INFO L225 Difference]: With dead ends: 316 [2018-07-25 13:18:17,871 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 13:18:17,875 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11934 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36270, Invalid=60140, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 13:18:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 13:18:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 313. [2018-07-25 13:18:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 13:18:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-25 13:18:17,882 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-25 13:18:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:17,882 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-25 13:18:17,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 13:18:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-25 13:18:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 13:18:17,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:17,883 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-25 13:18:17,883 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:17,883 INFO L82 PathProgramCache]: Analyzing trace with hash 294901535, now seen corresponding path program 154 times [2018-07-25 13:18:17,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:18,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:18,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 13:18:18,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 13:18:18,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 13:18:18,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12248, Invalid=12558, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:18:18,551 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 158 states. [2018-07-25 13:18:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:19,647 INFO L93 Difference]: Finished difference Result 318 states and 318 transitions. [2018-07-25 13:18:19,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 13:18:19,647 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 312 [2018-07-25 13:18:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:19,648 INFO L225 Difference]: With dead ends: 318 [2018-07-25 13:18:19,648 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 13:18:19,653 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12089 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36738, Invalid=60918, Unknown=0, NotChecked=0, Total=97656 [2018-07-25 13:18:19,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 13:18:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2018-07-25 13:18:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 13:18:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-25 13:18:19,665 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-25 13:18:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:19,665 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-25 13:18:19,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 13:18:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-25 13:18:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 13:18:19,666 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:19,667 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-25 13:18:19,667 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:19,667 INFO L82 PathProgramCache]: Analyzing trace with hash -67519703, now seen corresponding path program 155 times [2018-07-25 13:18:19,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:20,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:20,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 13:18:20,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 13:18:20,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 13:18:20,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 13:18:20,554 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 159 states. [2018-07-25 13:18:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:21,951 INFO L93 Difference]: Finished difference Result 320 states and 320 transitions. [2018-07-25 13:18:21,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:18:21,951 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 314 [2018-07-25 13:18:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:21,952 INFO L225 Difference]: With dead ends: 320 [2018-07-25 13:18:21,952 INFO L226 Difference]: Without dead ends: 318 [2018-07-25 13:18:21,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12245 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=37209, Invalid=61701, Unknown=0, NotChecked=0, Total=98910 [2018-07-25 13:18:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-07-25 13:18:21,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2018-07-25 13:18:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 13:18:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-25 13:18:21,965 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-25 13:18:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:21,966 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-25 13:18:21,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 13:18:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-25 13:18:21,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 13:18:21,967 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:21,967 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-25 13:18:21,967 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:21,967 INFO L82 PathProgramCache]: Analyzing trace with hash -461978445, now seen corresponding path program 156 times [2018-07-25 13:18:21,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:22,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:22,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:18:22,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:18:22,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:18:22,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12563, Invalid=12877, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:18:22,723 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 160 states. [2018-07-25 13:18:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:24,022 INFO L93 Difference]: Finished difference Result 322 states and 322 transitions. [2018-07-25 13:18:24,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:18:24,022 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 316 [2018-07-25 13:18:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:24,023 INFO L225 Difference]: With dead ends: 322 [2018-07-25 13:18:24,023 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 13:18:24,028 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12402 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=37683, Invalid=62489, Unknown=0, NotChecked=0, Total=100172 [2018-07-25 13:18:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 13:18:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2018-07-25 13:18:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 13:18:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-25 13:18:24,036 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-25 13:18:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:24,037 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-25 13:18:24,037 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:18:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-25 13:18:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 13:18:24,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:24,038 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-25 13:18:24,038 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1579707459, now seen corresponding path program 157 times [2018-07-25 13:18:24,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:24,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:24,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 13:18:24,762 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 13:18:24,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 13:18:24,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12722, Invalid=13038, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 13:18:24,765 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 161 states. [2018-07-25 13:18:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:26,202 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2018-07-25 13:18:26,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:18:26,202 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 318 [2018-07-25 13:18:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:26,203 INFO L225 Difference]: With dead ends: 324 [2018-07-25 13:18:26,203 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 13:18:26,209 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12560 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=38160, Invalid=63282, Unknown=0, NotChecked=0, Total=101442 [2018-07-25 13:18:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 13:18:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2018-07-25 13:18:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 13:18:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-25 13:18:26,217 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-25 13:18:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:26,217 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-25 13:18:26,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 13:18:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-25 13:18:26,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 13:18:26,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:26,218 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-25 13:18:26,218 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:26,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1975465913, now seen corresponding path program 158 times [2018-07-25 13:18:26,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:26,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:26,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 13:18:26,983 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 13:18:26,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 13:18:26,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12882, Invalid=13200, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:18:26,986 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 162 states. [2018-07-25 13:18:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:28,415 INFO L93 Difference]: Finished difference Result 326 states and 326 transitions. [2018-07-25 13:18:28,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 13:18:28,415 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 320 [2018-07-25 13:18:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:28,416 INFO L225 Difference]: With dead ends: 326 [2018-07-25 13:18:28,416 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 13:18:28,423 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12719 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=38640, Invalid=64080, Unknown=0, NotChecked=0, Total=102720 [2018-07-25 13:18:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 13:18:28,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2018-07-25 13:18:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 13:18:28,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-25 13:18:28,431 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-25 13:18:28,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:28,431 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-25 13:18:28,431 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 13:18:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-25 13:18:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 13:18:28,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:28,432 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-25 13:18:28,432 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:28,432 INFO L82 PathProgramCache]: Analyzing trace with hash -47250863, now seen corresponding path program 159 times [2018-07-25 13:18:28,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:29,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:29,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 13:18:29,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 13:18:29,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 13:18:29,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13043, Invalid=13363, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 13:18:29,105 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 163 states. [2018-07-25 13:18:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:30,374 INFO L93 Difference]: Finished difference Result 328 states and 328 transitions. [2018-07-25 13:18:30,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:18:30,374 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 322 [2018-07-25 13:18:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:30,374 INFO L225 Difference]: With dead ends: 328 [2018-07-25 13:18:30,375 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 13:18:30,377 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12879 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39123, Invalid=64883, Unknown=0, NotChecked=0, Total=104006 [2018-07-25 13:18:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 13:18:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 325. [2018-07-25 13:18:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 13:18:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-25 13:18:30,384 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-25 13:18:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:30,384 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-25 13:18:30,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 13:18:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-25 13:18:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 13:18:30,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:30,385 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-25 13:18:30,385 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:30,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1836507611, now seen corresponding path program 160 times [2018-07-25 13:18:30,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:31,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:31,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:18:31,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:18:31,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:18:31,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13205, Invalid=13527, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:18:31,028 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 164 states. [2018-07-25 13:18:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:32,290 INFO L93 Difference]: Finished difference Result 330 states and 330 transitions. [2018-07-25 13:18:32,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:18:32,290 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 324 [2018-07-25 13:18:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:32,290 INFO L225 Difference]: With dead ends: 330 [2018-07-25 13:18:32,290 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 13:18:32,295 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13040 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39609, Invalid=65691, Unknown=0, NotChecked=0, Total=105300 [2018-07-25 13:18:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 13:18:32,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2018-07-25 13:18:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 13:18:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-25 13:18:32,302 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-25 13:18:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:32,303 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-25 13:18:32,303 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:18:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-25 13:18:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 13:18:32,304 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:32,304 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-25 13:18:32,304 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:32,305 INFO L82 PathProgramCache]: Analyzing trace with hash -347797787, now seen corresponding path program 161 times [2018-07-25 13:18:32,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:32,971 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:32,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 13:18:32,971 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 13:18:32,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 13:18:32,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13368, Invalid=13692, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 13:18:32,974 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 165 states. [2018-07-25 13:18:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:34,149 INFO L93 Difference]: Finished difference Result 332 states and 332 transitions. [2018-07-25 13:18:34,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:18:34,149 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 326 [2018-07-25 13:18:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:34,150 INFO L225 Difference]: With dead ends: 332 [2018-07-25 13:18:34,150 INFO L226 Difference]: Without dead ends: 330 [2018-07-25 13:18:34,153 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13202 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40098, Invalid=66504, Unknown=0, NotChecked=0, Total=106602 [2018-07-25 13:18:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-07-25 13:18:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2018-07-25 13:18:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 13:18:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-25 13:18:34,160 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-25 13:18:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:34,161 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-25 13:18:34,161 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 13:18:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-25 13:18:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 13:18:34,162 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:34,162 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-25 13:18:34,162 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:34,162 INFO L82 PathProgramCache]: Analyzing trace with hash 773722479, now seen corresponding path program 162 times [2018-07-25 13:18:34,162 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:34,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:34,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 13:18:34,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 13:18:34,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 13:18:34,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13532, Invalid=13858, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:18:34,849 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 166 states. [2018-07-25 13:18:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:36,146 INFO L93 Difference]: Finished difference Result 334 states and 334 transitions. [2018-07-25 13:18:36,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 13:18:36,146 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 328 [2018-07-25 13:18:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:36,147 INFO L225 Difference]: With dead ends: 334 [2018-07-25 13:18:36,147 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 13:18:36,152 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13365 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40590, Invalid=67322, Unknown=0, NotChecked=0, Total=107912 [2018-07-25 13:18:36,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 13:18:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2018-07-25 13:18:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 13:18:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-25 13:18:36,164 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-25 13:18:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:36,164 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-25 13:18:36,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 13:18:36,164 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-25 13:18:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 13:18:36,166 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:36,166 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-25 13:18:36,166 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:36,166 INFO L82 PathProgramCache]: Analyzing trace with hash 517906809, now seen corresponding path program 163 times [2018-07-25 13:18:36,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:36,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:36,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 13:18:36,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 13:18:36,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 13:18:36,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13697, Invalid=14025, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:18:36,984 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 167 states. [2018-07-25 13:18:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:38,190 INFO L93 Difference]: Finished difference Result 336 states and 336 transitions. [2018-07-25 13:18:38,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:18:38,190 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 330 [2018-07-25 13:18:38,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:38,191 INFO L225 Difference]: With dead ends: 336 [2018-07-25 13:18:38,191 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 13:18:38,195 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13529 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41085, Invalid=68145, Unknown=0, NotChecked=0, Total=109230 [2018-07-25 13:18:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 13:18:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2018-07-25 13:18:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 13:18:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-25 13:18:38,203 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-25 13:18:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:38,203 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-25 13:18:38,203 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 13:18:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-25 13:18:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 13:18:38,204 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:38,204 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-25 13:18:38,204 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:38,204 INFO L82 PathProgramCache]: Analyzing trace with hash -507816189, now seen corresponding path program 164 times [2018-07-25 13:18:38,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:38,891 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:38,891 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:18:38,891 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:18:38,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:18:38,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13863, Invalid=14193, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:18:38,894 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 168 states. [2018-07-25 13:18:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:40,260 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2018-07-25 13:18:40,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:18:40,260 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 332 [2018-07-25 13:18:40,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:40,261 INFO L225 Difference]: With dead ends: 338 [2018-07-25 13:18:40,261 INFO L226 Difference]: Without dead ends: 336 [2018-07-25 13:18:40,263 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13694 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41583, Invalid=68973, Unknown=0, NotChecked=0, Total=110556 [2018-07-25 13:18:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-07-25 13:18:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 335. [2018-07-25 13:18:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 13:18:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-25 13:18:40,270 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-25 13:18:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:40,270 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-25 13:18:40,270 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:18:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-25 13:18:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 13:18:40,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:40,271 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-25 13:18:40,271 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:40,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1614860813, now seen corresponding path program 165 times [2018-07-25 13:18:40,271 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:40,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:40,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 13:18:40,946 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 13:18:40,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 13:18:40,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14030, Invalid=14362, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 13:18:40,948 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 169 states. [2018-07-25 13:18:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:42,250 INFO L93 Difference]: Finished difference Result 340 states and 340 transitions. [2018-07-25 13:18:42,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:18:42,250 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 334 [2018-07-25 13:18:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:42,250 INFO L225 Difference]: With dead ends: 340 [2018-07-25 13:18:42,251 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 13:18:42,255 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13860 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42084, Invalid=69806, Unknown=0, NotChecked=0, Total=111890 [2018-07-25 13:18:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 13:18:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2018-07-25 13:18:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 13:18:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-25 13:18:42,263 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-25 13:18:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:42,263 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-25 13:18:42,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 13:18:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-25 13:18:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 13:18:42,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:42,264 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-25 13:18:42,264 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:42,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1397994135, now seen corresponding path program 166 times [2018-07-25 13:18:42,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:42,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:42,970 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 13:18:42,970 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 13:18:42,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 13:18:42,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14198, Invalid=14532, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:18:42,973 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 170 states. [2018-07-25 13:18:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:44,225 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2018-07-25 13:18:44,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 13:18:44,225 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 336 [2018-07-25 13:18:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:44,225 INFO L225 Difference]: With dead ends: 342 [2018-07-25 13:18:44,225 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 13:18:44,229 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14027 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42588, Invalid=70644, Unknown=0, NotChecked=0, Total=113232 [2018-07-25 13:18:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 13:18:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 339. [2018-07-25 13:18:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 13:18:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-25 13:18:44,236 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-25 13:18:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:44,236 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-25 13:18:44,236 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 13:18:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-25 13:18:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 13:18:44,237 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:44,237 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-25 13:18:44,238 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:44,238 INFO L82 PathProgramCache]: Analyzing trace with hash -852453215, now seen corresponding path program 167 times [2018-07-25 13:18:44,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:44,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:44,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 13:18:44,939 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 13:18:44,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 13:18:44,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14367, Invalid=14703, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 13:18:44,942 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 171 states. [2018-07-25 13:18:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:46,315 INFO L93 Difference]: Finished difference Result 344 states and 344 transitions. [2018-07-25 13:18:46,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:18:46,316 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 338 [2018-07-25 13:18:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:46,316 INFO L225 Difference]: With dead ends: 344 [2018-07-25 13:18:46,317 INFO L226 Difference]: Without dead ends: 342 [2018-07-25 13:18:46,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14195 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43095, Invalid=71487, Unknown=0, NotChecked=0, Total=114582 [2018-07-25 13:18:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-07-25 13:18:46,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 341. [2018-07-25 13:18:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 13:18:46,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-25 13:18:46,330 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-25 13:18:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:46,330 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-25 13:18:46,330 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 13:18:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-25 13:18:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 13:18:46,331 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:46,331 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-25 13:18:46,331 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1131160619, now seen corresponding path program 168 times [2018-07-25 13:18:46,332 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:47,149 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:47,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:18:47,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:18:47,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:18:47,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14537, Invalid=14875, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:18:47,153 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 172 states. [2018-07-25 13:18:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:48,474 INFO L93 Difference]: Finished difference Result 346 states and 346 transitions. [2018-07-25 13:18:48,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:18:48,474 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 340 [2018-07-25 13:18:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:48,475 INFO L225 Difference]: With dead ends: 346 [2018-07-25 13:18:48,475 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 13:18:48,480 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14364 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=43605, Invalid=72335, Unknown=0, NotChecked=0, Total=115940 [2018-07-25 13:18:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 13:18:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2018-07-25 13:18:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 13:18:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-25 13:18:48,487 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-25 13:18:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:48,487 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-25 13:18:48,488 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:18:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-25 13:18:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 13:18:48,488 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:48,489 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-25 13:18:48,489 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:48,489 INFO L82 PathProgramCache]: Analyzing trace with hash 418575669, now seen corresponding path program 169 times [2018-07-25 13:18:48,489 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:49,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:49,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 13:18:49,204 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 13:18:49,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 13:18:49,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14708, Invalid=15048, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 13:18:49,207 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 173 states. [2018-07-25 13:18:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:50,627 INFO L93 Difference]: Finished difference Result 348 states and 348 transitions. [2018-07-25 13:18:50,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:18:50,627 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 342 [2018-07-25 13:18:50,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:50,627 INFO L225 Difference]: With dead ends: 348 [2018-07-25 13:18:50,627 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 13:18:50,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14534 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=44118, Invalid=73188, Unknown=0, NotChecked=0, Total=117306 [2018-07-25 13:18:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 13:18:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 345. [2018-07-25 13:18:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 13:18:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-25 13:18:50,637 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-25 13:18:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:50,637 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-25 13:18:50,637 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 13:18:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-25 13:18:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 13:18:50,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:50,638 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-25 13:18:50,639 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:50,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1475761217, now seen corresponding path program 170 times [2018-07-25 13:18:50,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:51,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:51,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 13:18:51,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 13:18:51,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 13:18:51,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14880, Invalid=15222, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:18:51,383 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 174 states. [2018-07-25 13:18:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:52,769 INFO L93 Difference]: Finished difference Result 350 states and 350 transitions. [2018-07-25 13:18:52,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 13:18:52,769 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 344 [2018-07-25 13:18:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:52,770 INFO L225 Difference]: With dead ends: 350 [2018-07-25 13:18:52,770 INFO L226 Difference]: Without dead ends: 348 [2018-07-25 13:18:52,775 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14705 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=44634, Invalid=74046, Unknown=0, NotChecked=0, Total=118680 [2018-07-25 13:18:52,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-07-25 13:18:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2018-07-25 13:18:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 13:18:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-25 13:18:52,784 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-25 13:18:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:52,784 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-25 13:18:52,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 13:18:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-25 13:18:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 13:18:52,785 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:52,785 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-25 13:18:52,785 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash -867375159, now seen corresponding path program 171 times [2018-07-25 13:18:52,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:53,602 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:53,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 13:18:53,602 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 13:18:53,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 13:18:53,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15053, Invalid=15397, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 13:18:53,604 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 175 states. [2018-07-25 13:18:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:54,911 INFO L93 Difference]: Finished difference Result 352 states and 352 transitions. [2018-07-25 13:18:54,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:18:54,911 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 346 [2018-07-25 13:18:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:54,911 INFO L225 Difference]: With dead ends: 352 [2018-07-25 13:18:54,911 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 13:18:54,916 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14877 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=45153, Invalid=74909, Unknown=0, NotChecked=0, Total=120062 [2018-07-25 13:18:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 13:18:54,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2018-07-25 13:18:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 13:18:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-25 13:18:54,924 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-25 13:18:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:54,924 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-25 13:18:54,924 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 13:18:54,924 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-25 13:18:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 13:18:54,925 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:54,925 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-25 13:18:54,925 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:54,925 INFO L82 PathProgramCache]: Analyzing trace with hash -323925677, now seen corresponding path program 172 times [2018-07-25 13:18:54,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:55,665 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:55,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:18:55,666 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:18:55,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:18:55,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15227, Invalid=15573, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:18:55,669 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 176 states. [2018-07-25 13:18:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:57,099 INFO L93 Difference]: Finished difference Result 354 states and 354 transitions. [2018-07-25 13:18:57,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:18:57,099 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 348 [2018-07-25 13:18:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:57,100 INFO L225 Difference]: With dead ends: 354 [2018-07-25 13:18:57,100 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 13:18:57,102 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=45675, Invalid=75777, Unknown=0, NotChecked=0, Total=121452 [2018-07-25 13:18:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 13:18:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 351. [2018-07-25 13:18:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 13:18:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-25 13:18:57,109 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-25 13:18:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:57,109 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-25 13:18:57,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:18:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-25 13:18:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 13:18:57,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:57,111 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-25 13:18:57,111 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:57,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2054983587, now seen corresponding path program 173 times [2018-07-25 13:18:57,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:57,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:57,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 13:18:57,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 13:18:57,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 13:18:57,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15402, Invalid=15750, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 13:18:57,864 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 177 states. [2018-07-25 13:18:59,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:59,335 INFO L93 Difference]: Finished difference Result 356 states and 356 transitions. [2018-07-25 13:18:59,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:18:59,335 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 350 [2018-07-25 13:18:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:59,336 INFO L225 Difference]: With dead ends: 356 [2018-07-25 13:18:59,336 INFO L226 Difference]: Without dead ends: 354 [2018-07-25 13:18:59,341 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15224 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=46200, Invalid=76650, Unknown=0, NotChecked=0, Total=122850 [2018-07-25 13:18:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-07-25 13:18:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 353. [2018-07-25 13:18:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 13:18:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-25 13:18:59,349 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-25 13:18:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:59,349 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-25 13:18:59,349 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 13:18:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-25 13:18:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 13:18:59,350 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:59,350 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-25 13:18:59,351 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:59,351 INFO L82 PathProgramCache]: Analyzing trace with hash 845675751, now seen corresponding path program 174 times [2018-07-25 13:18:59,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:00,180 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:00,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 13:19:00,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 13:19:00,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 13:19:00,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15578, Invalid=15928, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:19:00,182 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 178 states. [2018-07-25 13:19:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:01,551 INFO L93 Difference]: Finished difference Result 358 states and 358 transitions. [2018-07-25 13:19:01,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 13:19:01,551 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 352 [2018-07-25 13:19:01,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:01,552 INFO L225 Difference]: With dead ends: 358 [2018-07-25 13:19:01,552 INFO L226 Difference]: Without dead ends: 356 [2018-07-25 13:19:01,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15399 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=46728, Invalid=77528, Unknown=0, NotChecked=0, Total=124256 [2018-07-25 13:19:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-25 13:19:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 355. [2018-07-25 13:19:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 13:19:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-25 13:19:01,564 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-25 13:19:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:01,564 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-25 13:19:01,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 13:19:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-25 13:19:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 13:19:01,565 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:01,566 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-25 13:19:01,566 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:01,566 INFO L82 PathProgramCache]: Analyzing trace with hash 945524465, now seen corresponding path program 175 times [2018-07-25 13:19:01,566 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:02,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:02,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 13:19:02,334 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 13:19:02,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 13:19:02,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15755, Invalid=16107, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 13:19:02,337 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 179 states. [2018-07-25 13:19:03,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:03,920 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2018-07-25 13:19:03,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:19:03,920 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 354 [2018-07-25 13:19:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:03,921 INFO L225 Difference]: With dead ends: 360 [2018-07-25 13:19:03,921 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 13:19:03,924 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15575 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47259, Invalid=78411, Unknown=0, NotChecked=0, Total=125670 [2018-07-25 13:19:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 13:19:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 357. [2018-07-25 13:19:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 13:19:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-25 13:19:03,933 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-25 13:19:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:03,933 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-25 13:19:03,933 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 13:19:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-25 13:19:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 13:19:03,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:03,934 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-25 13:19:03,934 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:03,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1884109189, now seen corresponding path program 176 times [2018-07-25 13:19:03,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:04,721 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:04,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:19:04,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:19:04,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:19:04,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15933, Invalid=16287, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:19:04,724 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 180 states. [2018-07-25 13:19:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:06,299 INFO L93 Difference]: Finished difference Result 362 states and 362 transitions. [2018-07-25 13:19:06,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:19:06,299 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 356 [2018-07-25 13:19:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:06,300 INFO L225 Difference]: With dead ends: 362 [2018-07-25 13:19:06,300 INFO L226 Difference]: Without dead ends: 360 [2018-07-25 13:19:06,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15752 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47793, Invalid=79299, Unknown=0, NotChecked=0, Total=127092 [2018-07-25 13:19:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-07-25 13:19:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2018-07-25 13:19:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 13:19:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-25 13:19:06,314 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-25 13:19:06,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:06,314 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-25 13:19:06,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:19:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-25 13:19:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 13:19:06,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:06,315 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-25 13:19:06,315 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1847214981, now seen corresponding path program 177 times [2018-07-25 13:19:06,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:07,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:07,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 13:19:07,165 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 13:19:07,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 13:19:07,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16112, Invalid=16468, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 13:19:07,167 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 181 states. [2018-07-25 13:19:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:08,599 INFO L93 Difference]: Finished difference Result 364 states and 364 transitions. [2018-07-25 13:19:08,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:19:08,599 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 358 [2018-07-25 13:19:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:08,600 INFO L225 Difference]: With dead ends: 364 [2018-07-25 13:19:08,600 INFO L226 Difference]: Without dead ends: 362 [2018-07-25 13:19:08,605 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15930 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48330, Invalid=80192, Unknown=0, NotChecked=0, Total=128522 [2018-07-25 13:19:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-25 13:19:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2018-07-25 13:19:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 13:19:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-25 13:19:08,613 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-25 13:19:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:08,614 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-25 13:19:08,614 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 13:19:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-25 13:19:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 13:19:08,615 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:08,615 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-25 13:19:08,615 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1352050191, now seen corresponding path program 178 times [2018-07-25 13:19:08,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:09,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:09,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 13:19:09,412 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 13:19:09,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 13:19:09,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16292, Invalid=16650, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:19:09,416 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 182 states. [2018-07-25 13:19:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:10,893 INFO L93 Difference]: Finished difference Result 366 states and 366 transitions. [2018-07-25 13:19:10,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 13:19:10,893 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 360 [2018-07-25 13:19:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:10,893 INFO L225 Difference]: With dead ends: 366 [2018-07-25 13:19:10,894 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 13:19:10,897 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 359 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16109 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48870, Invalid=81090, Unknown=0, NotChecked=0, Total=129960 [2018-07-25 13:19:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 13:19:10,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 363. [2018-07-25 13:19:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 13:19:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-25 13:19:10,904 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-25 13:19:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:10,905 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-25 13:19:10,905 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 13:19:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-25 13:19:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 13:19:10,906 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:10,906 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-25 13:19:10,906 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:10,906 INFO L82 PathProgramCache]: Analyzing trace with hash -2054910439, now seen corresponding path program 179 times [2018-07-25 13:19:10,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:11,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:11,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 13:19:11,712 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 13:19:11,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 13:19:11,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16473, Invalid=16833, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 13:19:11,715 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 183 states. [2018-07-25 13:19:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:13,329 INFO L93 Difference]: Finished difference Result 368 states and 368 transitions. [2018-07-25 13:19:13,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:19:13,329 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 362 [2018-07-25 13:19:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:13,330 INFO L225 Difference]: With dead ends: 368 [2018-07-25 13:19:13,330 INFO L226 Difference]: Without dead ends: 366 [2018-07-25 13:19:13,336 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16289 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=49413, Invalid=81993, Unknown=0, NotChecked=0, Total=131406 [2018-07-25 13:19:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-07-25 13:19:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2018-07-25 13:19:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 13:19:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-25 13:19:13,343 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-25 13:19:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:13,344 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-25 13:19:13,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 13:19:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-25 13:19:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 13:19:13,345 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:13,345 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-25 13:19:13,345 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:13,345 INFO L82 PathProgramCache]: Analyzing trace with hash 915970979, now seen corresponding path program 180 times [2018-07-25 13:19:13,345 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:14,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:14,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:19:14,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:19:14,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:19:14,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16655, Invalid=17017, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:19:14,202 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 184 states. [2018-07-25 13:19:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:15,762 INFO L93 Difference]: Finished difference Result 370 states and 370 transitions. [2018-07-25 13:19:15,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:19:15,762 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 364 [2018-07-25 13:19:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:15,763 INFO L225 Difference]: With dead ends: 370 [2018-07-25 13:19:15,763 INFO L226 Difference]: Without dead ends: 368 [2018-07-25 13:19:15,769 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16470 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=49959, Invalid=82901, Unknown=0, NotChecked=0, Total=132860 [2018-07-25 13:19:15,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-07-25 13:19:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 367. [2018-07-25 13:19:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 13:19:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-25 13:19:15,777 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-25 13:19:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:15,778 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-25 13:19:15,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:19:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-25 13:19:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 13:19:15,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:15,779 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-25 13:19:15,779 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:15,779 INFO L82 PathProgramCache]: Analyzing trace with hash -220238163, now seen corresponding path program 181 times [2018-07-25 13:19:15,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:16,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:16,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 13:19:16,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 13:19:16,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 13:19:16,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16838, Invalid=17202, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:19:16,631 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 185 states. [2018-07-25 13:19:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:18,100 INFO L93 Difference]: Finished difference Result 372 states and 372 transitions. [2018-07-25 13:19:18,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:19:18,100 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 366 [2018-07-25 13:19:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:18,101 INFO L225 Difference]: With dead ends: 372 [2018-07-25 13:19:18,101 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 13:19:18,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16652 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=50508, Invalid=83814, Unknown=0, NotChecked=0, Total=134322 [2018-07-25 13:19:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 13:19:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2018-07-25 13:19:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 13:19:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-25 13:19:18,113 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-25 13:19:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:18,113 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-25 13:19:18,113 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 13:19:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-25 13:19:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 13:19:18,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:18,114 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-25 13:19:18,115 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1195530441, now seen corresponding path program 182 times [2018-07-25 13:19:18,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:18,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:18,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 13:19:18,946 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 13:19:18,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 13:19:18,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17022, Invalid=17388, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:19:18,949 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 186 states. [2018-07-25 13:19:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:20,576 INFO L93 Difference]: Finished difference Result 374 states and 374 transitions. [2018-07-25 13:19:20,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 13:19:20,576 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 368 [2018-07-25 13:19:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:20,576 INFO L225 Difference]: With dead ends: 374 [2018-07-25 13:19:20,577 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 13:19:20,579 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16835 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=51060, Invalid=84732, Unknown=0, NotChecked=0, Total=135792 [2018-07-25 13:19:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 13:19:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 371. [2018-07-25 13:19:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 13:19:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-25 13:19:20,587 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-25 13:19:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:20,587 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-25 13:19:20,587 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 13:19:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-25 13:19:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 13:19:20,588 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:20,588 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-25 13:19:20,589 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:20,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2146428225, now seen corresponding path program 183 times [2018-07-25 13:19:20,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:21,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:21,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 13:19:21,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 13:19:21,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 13:19:21,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17207, Invalid=17575, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 13:19:21,555 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 187 states. [2018-07-25 13:19:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:23,423 INFO L93 Difference]: Finished difference Result 376 states and 376 transitions. [2018-07-25 13:19:23,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:19:23,423 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 370 [2018-07-25 13:19:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:23,424 INFO L225 Difference]: With dead ends: 376 [2018-07-25 13:19:23,424 INFO L226 Difference]: Without dead ends: 374 [2018-07-25 13:19:23,430 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17019 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=51615, Invalid=85655, Unknown=0, NotChecked=0, Total=137270 [2018-07-25 13:19:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-07-25 13:19:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 373. [2018-07-25 13:19:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 13:19:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-25 13:19:23,438 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-25 13:19:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:23,438 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-25 13:19:23,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 13:19:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-25 13:19:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 13:19:23,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:23,439 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-25 13:19:23,439 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:23,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1133168843, now seen corresponding path program 184 times [2018-07-25 13:19:23,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:24,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:24,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:19:24,338 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:19:24,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:19:24,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17393, Invalid=17763, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:19:24,340 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 188 states. [2018-07-25 13:19:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:25,905 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2018-07-25 13:19:25,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:19:25,905 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 372 [2018-07-25 13:19:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:25,906 INFO L225 Difference]: With dead ends: 378 [2018-07-25 13:19:25,906 INFO L226 Difference]: Without dead ends: 376 [2018-07-25 13:19:25,912 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17204 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=52173, Invalid=86583, Unknown=0, NotChecked=0, Total=138756 [2018-07-25 13:19:25,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-07-25 13:19:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 375. [2018-07-25 13:19:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 13:19:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-25 13:19:25,920 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-25 13:19:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:25,921 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-25 13:19:25,921 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:19:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-25 13:19:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 13:19:25,922 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:25,922 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-25 13:19:25,922 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:25,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1946488363, now seen corresponding path program 185 times [2018-07-25 13:19:25,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:26,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:26,812 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 13:19:26,812 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 13:19:26,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 13:19:26,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17580, Invalid=17952, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 13:19:26,816 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 189 states. [2018-07-25 13:19:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:28,339 INFO L93 Difference]: Finished difference Result 380 states and 380 transitions. [2018-07-25 13:19:28,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:19:28,339 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 374 [2018-07-25 13:19:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:28,339 INFO L225 Difference]: With dead ends: 380 [2018-07-25 13:19:28,339 INFO L226 Difference]: Without dead ends: 378 [2018-07-25 13:19:28,344 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17390 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=52734, Invalid=87516, Unknown=0, NotChecked=0, Total=140250 [2018-07-25 13:19:28,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-07-25 13:19:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 377. [2018-07-25 13:19:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 13:19:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-25 13:19:28,352 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-25 13:19:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:28,352 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-25 13:19:28,352 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 13:19:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-25 13:19:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 13:19:28,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:28,353 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-25 13:19:28,353 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2030370911, now seen corresponding path program 186 times [2018-07-25 13:19:28,353 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:29,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:29,230 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 13:19:29,230 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 13:19:29,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 13:19:29,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17768, Invalid=18142, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:19:29,234 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 190 states. [2018-07-25 13:19:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:30,992 INFO L93 Difference]: Finished difference Result 382 states and 382 transitions. [2018-07-25 13:19:30,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 13:19:30,993 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 376 [2018-07-25 13:19:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:30,993 INFO L225 Difference]: With dead ends: 382 [2018-07-25 13:19:30,993 INFO L226 Difference]: Without dead ends: 380 [2018-07-25 13:19:30,996 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17577 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=53298, Invalid=88454, Unknown=0, NotChecked=0, Total=141752 [2018-07-25 13:19:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-07-25 13:19:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 379. [2018-07-25 13:19:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 13:19:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-25 13:19:31,004 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-25 13:19:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:31,004 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-25 13:19:31,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 13:19:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-25 13:19:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 13:19:31,006 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:31,006 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-25 13:19:31,006 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:31,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1271239785, now seen corresponding path program 187 times [2018-07-25 13:19:31,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:31,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:31,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 13:19:31,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 13:19:31,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 13:19:31,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17957, Invalid=18333, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:19:31,890 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 191 states. [2018-07-25 13:19:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:33,659 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-07-25 13:19:33,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:19:33,659 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 378 [2018-07-25 13:19:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:33,660 INFO L225 Difference]: With dead ends: 384 [2018-07-25 13:19:33,660 INFO L226 Difference]: Without dead ends: 382 [2018-07-25 13:19:33,666 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17765 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=53865, Invalid=89397, Unknown=0, NotChecked=0, Total=143262 [2018-07-25 13:19:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-07-25 13:19:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 381. [2018-07-25 13:19:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 13:19:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-25 13:19:33,675 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-25 13:19:33,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:33,675 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-25 13:19:33,675 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 13:19:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-25 13:19:33,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 13:19:33,676 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:33,676 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-25 13:19:33,676 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:33,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1890668019, now seen corresponding path program 188 times [2018-07-25 13:19:33,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:34,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:34,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:19:34,609 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:19:34,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:19:34,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18147, Invalid=18525, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:19:34,612 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 192 states. [2018-07-25 13:19:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:36,313 INFO L93 Difference]: Finished difference Result 386 states and 386 transitions. [2018-07-25 13:19:36,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:19:36,313 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 380 [2018-07-25 13:19:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:36,314 INFO L225 Difference]: With dead ends: 386 [2018-07-25 13:19:36,314 INFO L226 Difference]: Without dead ends: 384 [2018-07-25 13:19:36,321 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 379 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17954 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=54435, Invalid=90345, Unknown=0, NotChecked=0, Total=144780 [2018-07-25 13:19:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-25 13:19:36,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 383. [2018-07-25 13:19:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 13:19:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-25 13:19:36,329 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-25 13:19:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:36,329 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-25 13:19:36,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:19:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-25 13:19:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 13:19:36,330 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:36,330 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-25 13:19:36,330 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:36,331 INFO L82 PathProgramCache]: Analyzing trace with hash 160746749, now seen corresponding path program 189 times [2018-07-25 13:19:36,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:37,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:37,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 13:19:37,310 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 13:19:37,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 13:19:37,312 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18338, Invalid=18718, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 13:19:37,312 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 193 states. [2018-07-25 13:19:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:38,950 INFO L93 Difference]: Finished difference Result 388 states and 388 transitions. [2018-07-25 13:19:38,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:19:38,950 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 382 [2018-07-25 13:19:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:38,951 INFO L225 Difference]: With dead ends: 388 [2018-07-25 13:19:38,951 INFO L226 Difference]: Without dead ends: 386 [2018-07-25 13:19:38,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18144 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=55008, Invalid=91298, Unknown=0, NotChecked=0, Total=146306 [2018-07-25 13:19:38,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-07-25 13:19:38,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 385. [2018-07-25 13:19:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 13:19:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-25 13:19:38,969 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-25 13:19:38,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:38,969 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-25 13:19:38,969 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 13:19:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-25 13:19:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 13:19:38,970 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:38,970 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-25 13:19:38,970 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:38,971 INFO L82 PathProgramCache]: Analyzing trace with hash -141250169, now seen corresponding path program 190 times [2018-07-25 13:19:38,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:39,897 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:39,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 13:19:39,897 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 13:19:39,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 13:19:39,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:19:39,901 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 194 states. [2018-07-25 13:19:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:41,572 INFO L93 Difference]: Finished difference Result 390 states and 390 transitions. [2018-07-25 13:19:41,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 13:19:41,572 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 384 [2018-07-25 13:19:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:41,572 INFO L225 Difference]: With dead ends: 390 [2018-07-25 13:19:41,572 INFO L226 Difference]: Without dead ends: 388 [2018-07-25 13:19:41,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18335 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=55584, Invalid=92256, Unknown=0, NotChecked=0, Total=147840 [2018-07-25 13:19:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-07-25 13:19:41,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 387. [2018-07-25 13:19:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 13:19:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-25 13:19:41,584 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-25 13:19:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:41,584 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-25 13:19:41,585 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 13:19:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-25 13:19:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 13:19:41,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:41,586 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-25 13:19:41,586 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:41,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1697487761, now seen corresponding path program 191 times [2018-07-25 13:19:41,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:42,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:42,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 13:19:42,507 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 13:19:42,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 13:19:42,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18723, Invalid=19107, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 13:19:42,511 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 195 states. [2018-07-25 13:19:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:44,379 INFO L93 Difference]: Finished difference Result 392 states and 392 transitions. [2018-07-25 13:19:44,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:19:44,379 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 386 [2018-07-25 13:19:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:44,379 INFO L225 Difference]: With dead ends: 392 [2018-07-25 13:19:44,379 INFO L226 Difference]: Without dead ends: 390 [2018-07-25 13:19:44,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18527 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=56163, Invalid=93219, Unknown=0, NotChecked=0, Total=149382 [2018-07-25 13:19:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-07-25 13:19:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 389. [2018-07-25 13:19:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 13:19:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-25 13:19:44,392 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-25 13:19:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:44,392 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-25 13:19:44,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 13:19:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-25 13:19:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 13:19:44,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:44,394 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-25 13:19:44,394 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:44,395 INFO L82 PathProgramCache]: Analyzing trace with hash -801887461, now seen corresponding path program 192 times [2018-07-25 13:19:44,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:45,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:45,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:19:45,317 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:19:45,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:19:45,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18917, Invalid=19303, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:19:45,321 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 196 states. [2018-07-25 13:19:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:47,160 INFO L93 Difference]: Finished difference Result 394 states and 394 transitions. [2018-07-25 13:19:47,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:19:47,160 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 388 [2018-07-25 13:19:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:47,161 INFO L225 Difference]: With dead ends: 394 [2018-07-25 13:19:47,161 INFO L226 Difference]: Without dead ends: 392 [2018-07-25 13:19:47,168 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18720 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=56745, Invalid=94187, Unknown=0, NotChecked=0, Total=150932 [2018-07-25 13:19:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-07-25 13:19:47,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 391. [2018-07-25 13:19:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 13:19:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-25 13:19:47,176 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-25 13:19:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:47,176 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-25 13:19:47,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:19:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-25 13:19:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 13:19:47,177 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:47,178 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-25 13:19:47,178 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:47,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1814757339, now seen corresponding path program 193 times [2018-07-25 13:19:47,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:48,242 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:48,242 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 13:19:48,242 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 13:19:48,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 13:19:48,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19112, Invalid=19500, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 13:19:48,246 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 197 states. [2018-07-25 13:19:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:50,179 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2018-07-25 13:19:50,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:19:50,180 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 390 [2018-07-25 13:19:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:50,180 INFO L225 Difference]: With dead ends: 396 [2018-07-25 13:19:50,180 INFO L226 Difference]: Without dead ends: 394 [2018-07-25 13:19:50,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18914 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=57330, Invalid=95160, Unknown=0, NotChecked=0, Total=152490 [2018-07-25 13:19:50,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-07-25 13:19:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2018-07-25 13:19:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 13:19:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-25 13:19:50,197 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-25 13:19:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:50,197 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-25 13:19:50,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 13:19:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-25 13:19:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 13:19:50,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:50,198 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-25 13:19:50,198 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:50,199 INFO L82 PathProgramCache]: Analyzing trace with hash -225133905, now seen corresponding path program 194 times [2018-07-25 13:19:50,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:51,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 13:19:51,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 13:19:51,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 13:19:51,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19308, Invalid=19698, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:19:51,317 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 198 states. [2018-07-25 13:19:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:53,199 INFO L93 Difference]: Finished difference Result 398 states and 398 transitions. [2018-07-25 13:19:53,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 13:19:53,199 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 392 [2018-07-25 13:19:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:53,200 INFO L225 Difference]: With dead ends: 398 [2018-07-25 13:19:53,200 INFO L226 Difference]: Without dead ends: 396 [2018-07-25 13:19:53,206 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19109 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=57918, Invalid=96138, Unknown=0, NotChecked=0, Total=154056 [2018-07-25 13:19:53,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-07-25 13:19:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 395. [2018-07-25 13:19:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 13:19:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-25 13:19:53,215 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-25 13:19:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:53,215 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-25 13:19:53,215 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 13:19:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-25 13:19:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 13:19:53,216 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:53,216 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-25 13:19:53,216 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:53,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1605371207, now seen corresponding path program 195 times [2018-07-25 13:19:53,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:54,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:54,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 13:19:54,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 13:19:54,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 13:19:54,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19505, Invalid=19897, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 13:19:54,277 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 199 states. [2018-07-25 13:19:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:56,122 INFO L93 Difference]: Finished difference Result 400 states and 400 transitions. [2018-07-25 13:19:56,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:19:56,122 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 394 [2018-07-25 13:19:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:56,123 INFO L225 Difference]: With dead ends: 400 [2018-07-25 13:19:56,123 INFO L226 Difference]: Without dead ends: 398 [2018-07-25 13:19:56,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19305 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=58509, Invalid=97121, Unknown=0, NotChecked=0, Total=155630 [2018-07-25 13:19:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-07-25 13:19:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2018-07-25 13:19:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 13:19:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-25 13:19:56,137 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-25 13:19:56,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:56,138 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-25 13:19:56,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 13:19:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-25 13:19:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 13:19:56,139 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:56,139 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-25 13:19:56,139 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash -868523965, now seen corresponding path program 196 times [2018-07-25 13:19:56,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:57,206 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:57,206 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:19:57,206 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:19:57,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:19:57,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19703, Invalid=20097, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:19:57,211 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 200 states. [2018-07-25 13:19:59,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:59,157 INFO L93 Difference]: Finished difference Result 402 states and 402 transitions. [2018-07-25 13:19:59,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:19:59,157 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 396 [2018-07-25 13:19:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:59,157 INFO L225 Difference]: With dead ends: 402 [2018-07-25 13:19:59,157 INFO L226 Difference]: Without dead ends: 400 [2018-07-25 13:19:59,161 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19502 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=59103, Invalid=98109, Unknown=0, NotChecked=0, Total=157212 [2018-07-25 13:19:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-07-25 13:19:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 399. [2018-07-25 13:19:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 13:19:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-25 13:19:59,170 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-25 13:19:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:59,170 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-25 13:19:59,170 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:19:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-25 13:19:59,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 13:19:59,172 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:59,172 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-25 13:19:59,172 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1427928243, now seen corresponding path program 197 times [2018-07-25 13:19:59,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:00,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:00,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 13:20:00,326 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 13:20:00,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 13:20:00,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19902, Invalid=20298, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 13:20:00,331 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 201 states. [2018-07-25 13:20:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:02,515 INFO L93 Difference]: Finished difference Result 404 states and 404 transitions. [2018-07-25 13:20:02,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:20:02,516 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 398 [2018-07-25 13:20:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:02,516 INFO L225 Difference]: With dead ends: 404 [2018-07-25 13:20:02,516 INFO L226 Difference]: Without dead ends: 402 [2018-07-25 13:20:02,519 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 397 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19700 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=59700, Invalid=99102, Unknown=0, NotChecked=0, Total=158802 [2018-07-25 13:20:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-07-25 13:20:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 401. [2018-07-25 13:20:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 13:20:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-25 13:20:02,528 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-25 13:20:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:02,528 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-25 13:20:02,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 13:20:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-25 13:20:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 13:20:02,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:02,529 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-25 13:20:02,530 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:02,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2144527401, now seen corresponding path program 198 times [2018-07-25 13:20:02,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:03,586 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:03,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 13:20:03,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 13:20:03,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 13:20:03,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20102, Invalid=20500, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:20:03,591 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 202 states. [2018-07-25 13:20:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:05,826 INFO L93 Difference]: Finished difference Result 406 states and 406 transitions. [2018-07-25 13:20:05,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 13:20:05,826 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 400 [2018-07-25 13:20:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:05,827 INFO L225 Difference]: With dead ends: 406 [2018-07-25 13:20:05,827 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 13:20:05,834 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 399 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19899 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=60300, Invalid=100100, Unknown=0, NotChecked=0, Total=160400 [2018-07-25 13:20:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 13:20:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 403. [2018-07-25 13:20:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 13:20:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-25 13:20:05,843 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-25 13:20:05,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:05,843 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-25 13:20:05,843 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 13:20:05,844 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-25 13:20:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 13:20:05,845 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:05,845 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-25 13:20:05,845 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:05,845 INFO L82 PathProgramCache]: Analyzing trace with hash 693416417, now seen corresponding path program 199 times [2018-07-25 13:20:05,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:07,029 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:07,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 13:20:07,030 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 13:20:07,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 13:20:07,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20303, Invalid=20703, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 13:20:07,035 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 203 states. [2018-07-25 13:20:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:09,153 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2018-07-25 13:20:09,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:20:09,153 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 402 [2018-07-25 13:20:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:09,154 INFO L225 Difference]: With dead ends: 408 [2018-07-25 13:20:09,154 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 13:20:09,162 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 401 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20099 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=60903, Invalid=101103, Unknown=0, NotChecked=0, Total=162006 [2018-07-25 13:20:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 13:20:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2018-07-25 13:20:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 13:20:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-25 13:20:09,170 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-25 13:20:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:09,171 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-25 13:20:09,171 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 13:20:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-25 13:20:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 13:20:09,172 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:09,172 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-25 13:20:09,172 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:09,173 INFO L82 PathProgramCache]: Analyzing trace with hash 653192555, now seen corresponding path program 200 times [2018-07-25 13:20:09,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:10,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:10,295 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:20:10,295 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:20:10,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:20:10,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20505, Invalid=20907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:20:10,299 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 204 states. [2018-07-25 13:20:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:12,452 INFO L93 Difference]: Finished difference Result 410 states and 410 transitions. [2018-07-25 13:20:12,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:20:12,453 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 404 [2018-07-25 13:20:12,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:12,453 INFO L225 Difference]: With dead ends: 410 [2018-07-25 13:20:12,453 INFO L226 Difference]: Without dead ends: 408 [2018-07-25 13:20:12,460 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20300 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=61509, Invalid=102111, Unknown=0, NotChecked=0, Total=163620 [2018-07-25 13:20:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-07-25 13:20:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 407. [2018-07-25 13:20:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 13:20:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-25 13:20:12,469 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-25 13:20:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:12,470 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-25 13:20:12,470 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:20:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-25 13:20:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 13:20:12,472 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:12,472 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-25 13:20:12,472 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash 652766837, now seen corresponding path program 201 times [2018-07-25 13:20:12,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:13,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:13,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 13:20:13,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 13:20:13,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 13:20:13,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20708, Invalid=21112, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 13:20:13,677 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 205 states. [2018-07-25 13:20:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:15,683 INFO L93 Difference]: Finished difference Result 412 states and 412 transitions. [2018-07-25 13:20:15,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:20:15,683 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 406 [2018-07-25 13:20:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:15,684 INFO L225 Difference]: With dead ends: 412 [2018-07-25 13:20:15,684 INFO L226 Difference]: Without dead ends: 410 [2018-07-25 13:20:15,691 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20502 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=62118, Invalid=103124, Unknown=0, NotChecked=0, Total=165242 [2018-07-25 13:20:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-07-25 13:20:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 409. [2018-07-25 13:20:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 13:20:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-25 13:20:15,700 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-25 13:20:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:15,700 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-25 13:20:15,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 13:20:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-25 13:20:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 13:20:15,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:15,701 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-25 13:20:15,701 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:15,702 INFO L82 PathProgramCache]: Analyzing trace with hash 243651839, now seen corresponding path program 202 times [2018-07-25 13:20:15,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:16,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:16,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 13:20:16,895 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 13:20:16,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 13:20:16,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20912, Invalid=21318, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:20:16,898 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 206 states. [2018-07-25 13:20:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:18,970 INFO L93 Difference]: Finished difference Result 414 states and 414 transitions. [2018-07-25 13:20:18,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 13:20:18,970 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 408 [2018-07-25 13:20:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:18,971 INFO L225 Difference]: With dead ends: 414 [2018-07-25 13:20:18,971 INFO L226 Difference]: Without dead ends: 412 [2018-07-25 13:20:18,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 407 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20705 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=62730, Invalid=104142, Unknown=0, NotChecked=0, Total=166872 [2018-07-25 13:20:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2018-07-25 13:20:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2018-07-25 13:20:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 13:20:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-25 13:20:18,987 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-25 13:20:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:18,987 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-25 13:20:18,987 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 13:20:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-25 13:20:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 13:20:18,988 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:18,988 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-25 13:20:18,989 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:18,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2073837303, now seen corresponding path program 203 times [2018-07-25 13:20:18,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:20,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:20,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 13:20:20,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 13:20:20,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 13:20:20,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21117, Invalid=21525, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 13:20:20,121 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 207 states. [2018-07-25 13:20:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:22,088 INFO L93 Difference]: Finished difference Result 416 states and 416 transitions. [2018-07-25 13:20:22,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:20:22,088 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 410 [2018-07-25 13:20:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:22,088 INFO L225 Difference]: With dead ends: 416 [2018-07-25 13:20:22,089 INFO L226 Difference]: Without dead ends: 414 [2018-07-25 13:20:22,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 409 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20909 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=63345, Invalid=105165, Unknown=0, NotChecked=0, Total=168510 [2018-07-25 13:20:22,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-07-25 13:20:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 413. [2018-07-25 13:20:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 13:20:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-25 13:20:22,104 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-25 13:20:22,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:22,104 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-25 13:20:22,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 13:20:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-25 13:20:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 13:20:22,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:22,106 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-25 13:20:22,106 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash -92876141, now seen corresponding path program 204 times [2018-07-25 13:20:22,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:23,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:23,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:20:23,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:20:23,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:20:23,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21323, Invalid=21733, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:20:23,245 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 208 states. [2018-07-25 13:20:25,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:25,238 INFO L93 Difference]: Finished difference Result 418 states and 418 transitions. [2018-07-25 13:20:25,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:20:25,238 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 412 [2018-07-25 13:20:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:25,239 INFO L225 Difference]: With dead ends: 418 [2018-07-25 13:20:25,239 INFO L226 Difference]: Without dead ends: 416 [2018-07-25 13:20:25,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21114 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=63963, Invalid=106193, Unknown=0, NotChecked=0, Total=170156 [2018-07-25 13:20:25,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-07-25 13:20:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 415. [2018-07-25 13:20:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 13:20:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-25 13:20:25,255 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-25 13:20:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:25,255 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-25 13:20:25,255 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:20:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-25 13:20:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 13:20:25,256 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:25,256 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-25 13:20:25,256 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:25,257 INFO L82 PathProgramCache]: Analyzing trace with hash 940288413, now seen corresponding path program 205 times [2018-07-25 13:20:25,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:26,382 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:26,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 13:20:26,383 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 13:20:26,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 13:20:26,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21530, Invalid=21942, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 13:20:26,388 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 209 states. [2018-07-25 13:20:28,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:28,485 INFO L93 Difference]: Finished difference Result 420 states and 420 transitions. [2018-07-25 13:20:28,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:20:28,485 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 414 [2018-07-25 13:20:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:28,485 INFO L225 Difference]: With dead ends: 420 [2018-07-25 13:20:28,485 INFO L226 Difference]: Without dead ends: 418 [2018-07-25 13:20:28,490 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21320 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=64584, Invalid=107226, Unknown=0, NotChecked=0, Total=171810 [2018-07-25 13:20:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-07-25 13:20:28,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 417. [2018-07-25 13:20:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 13:20:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-07-25 13:20:28,499 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-07-25 13:20:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:28,500 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-07-25 13:20:28,500 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 13:20:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-07-25 13:20:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 13:20:28,501 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:28,501 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-07-25 13:20:28,501 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:28,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1673979431, now seen corresponding path program 206 times [2018-07-25 13:20:28,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:29,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:29,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 13:20:29,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 13:20:29,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 13:20:29,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21738, Invalid=22152, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:20:29,635 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 210 states. [2018-07-25 13:20:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:31,774 INFO L93 Difference]: Finished difference Result 422 states and 422 transitions. [2018-07-25 13:20:31,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 13:20:31,774 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 416 [2018-07-25 13:20:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:31,774 INFO L225 Difference]: With dead ends: 422 [2018-07-25 13:20:31,774 INFO L226 Difference]: Without dead ends: 420 [2018-07-25 13:20:31,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21527 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=65208, Invalid=108264, Unknown=0, NotChecked=0, Total=173472 [2018-07-25 13:20:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-07-25 13:20:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2018-07-25 13:20:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 13:20:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-07-25 13:20:31,788 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-07-25 13:20:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:31,788 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-07-25 13:20:31,788 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 13:20:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-07-25 13:20:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 13:20:31,789 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:31,789 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-07-25 13:20:31,789 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:31,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1918556111, now seen corresponding path program 207 times [2018-07-25 13:20:31,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:32,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:32,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 13:20:32,995 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 13:20:32,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 13:20:32,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21947, Invalid=22363, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 13:20:32,999 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 211 states. [2018-07-25 13:20:35,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:35,215 INFO L93 Difference]: Finished difference Result 424 states and 424 transitions. [2018-07-25 13:20:35,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:20:35,215 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 418 [2018-07-25 13:20:35,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:35,216 INFO L225 Difference]: With dead ends: 424 [2018-07-25 13:20:35,216 INFO L226 Difference]: Without dead ends: 422 [2018-07-25 13:20:35,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21735 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=65835, Invalid=109307, Unknown=0, NotChecked=0, Total=175142 [2018-07-25 13:20:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-07-25 13:20:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 421. [2018-07-25 13:20:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 13:20:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-07-25 13:20:35,229 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-07-25 13:20:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:35,229 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-07-25 13:20:35,229 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 13:20:35,229 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-07-25 13:20:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 13:20:35,230 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:35,230 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-07-25 13:20:35,231 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:35,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1191505989, now seen corresponding path program 208 times [2018-07-25 13:20:35,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:36,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:36,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:20:36,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:20:36,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:20:36,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22157, Invalid=22575, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:20:36,383 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 212 states. [2018-07-25 13:20:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:38,670 INFO L93 Difference]: Finished difference Result 426 states and 426 transitions. [2018-07-25 13:20:38,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:20:38,671 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 420 [2018-07-25 13:20:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:38,671 INFO L225 Difference]: With dead ends: 426 [2018-07-25 13:20:38,671 INFO L226 Difference]: Without dead ends: 424 [2018-07-25 13:20:38,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 419 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21944 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=66465, Invalid=110355, Unknown=0, NotChecked=0, Total=176820 [2018-07-25 13:20:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-07-25 13:20:38,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 423. [2018-07-25 13:20:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 13:20:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-07-25 13:20:38,684 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-07-25 13:20:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:38,684 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-07-25 13:20:38,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:20:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-07-25 13:20:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 13:20:38,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:38,686 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-07-25 13:20:38,686 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:38,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1718959301, now seen corresponding path program 209 times [2018-07-25 13:20:38,686 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:39,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:39,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 13:20:39,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 13:20:39,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 13:20:39,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22368, Invalid=22788, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 13:20:39,855 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 213 states. [2018-07-25 13:20:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:42,124 INFO L93 Difference]: Finished difference Result 428 states and 428 transitions. [2018-07-25 13:20:42,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:20:42,124 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 422 [2018-07-25 13:20:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:42,125 INFO L225 Difference]: With dead ends: 428 [2018-07-25 13:20:42,125 INFO L226 Difference]: Without dead ends: 426 [2018-07-25 13:20:42,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 421 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22154 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=67098, Invalid=111408, Unknown=0, NotChecked=0, Total=178506 [2018-07-25 13:20:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-07-25 13:20:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2018-07-25 13:20:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 13:20:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-07-25 13:20:42,137 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-07-25 13:20:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:42,137 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-07-25 13:20:42,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 13:20:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-07-25 13:20:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 13:20:42,139 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:42,139 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-07-25 13:20:42,139 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1642574001, now seen corresponding path program 210 times [2018-07-25 13:20:42,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:43,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:43,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 13:20:43,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 13:20:43,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 13:20:43,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22580, Invalid=23002, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:20:43,314 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 214 states. [2018-07-25 13:20:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:45,664 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2018-07-25 13:20:45,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 13:20:45,664 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 424 [2018-07-25 13:20:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:45,665 INFO L225 Difference]: With dead ends: 430 [2018-07-25 13:20:45,665 INFO L226 Difference]: Without dead ends: 428 [2018-07-25 13:20:45,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22365 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=67734, Invalid=112466, Unknown=0, NotChecked=0, Total=180200 [2018-07-25 13:20:45,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-07-25 13:20:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2018-07-25 13:20:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 13:20:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-07-25 13:20:45,677 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-07-25 13:20:45,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:45,677 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-07-25 13:20:45,677 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 13:20:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-07-25 13:20:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 13:20:45,679 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:45,679 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-07-25 13:20:45,679 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:45,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2034296665, now seen corresponding path program 211 times [2018-07-25 13:20:45,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:46,866 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:46,866 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 13:20:46,866 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 13:20:46,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 13:20:46,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22793, Invalid=23217, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:20:46,871 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 215 states. Received shutdown request... [2018-07-25 13:20:48,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:20:48,296 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:20:48,301 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:20:48,301 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:20:48 BoogieIcfgContainer [2018-07-25 13:20:48,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:20:48,302 INFO L168 Benchmark]: Toolchain (without parser) took 259975.76 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 878.0 MB in the end (delta: 598.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 13:20:48,304 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 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 13:20:48,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.14 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 13:20:48,304 INFO L168 Benchmark]: Boogie Preprocessor took 18.72 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 13:20:48,305 INFO L168 Benchmark]: RCFGBuilder took 239.15 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 13:20:48,305 INFO L168 Benchmark]: TraceAbstraction took 259672.86 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 878.0 MB in the end (delta: 588.2 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 13:20:48,307 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 0.17 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 39.14 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 18.72 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 239.15 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 259672.86 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 878.0 MB in the end (delta: 588.2 MB). 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: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (427states) and interpolant automaton (currently 169 states, 215 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 381 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 259.6s OverallTime, 212 OverallIterations, 212 TraceHistogramMax, 163.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 635 SDtfs, 212 SDslu, 18447 SDs, 0 SdLazy, 46331 SolverSat, 45348 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45535 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 45322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601847 ImplicationChecksByTransitivity, 190.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 211 MinimizatonAttempts, 211 StatesRemovedByMinimization, 211 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 75.7s InterpolantComputationTime, 45580 NumberOfCodeBlocks, 45580 NumberOfCodeBlocksAsserted, 212 NumberOfCheckSat, 45368 ConstructedInterpolants, 0 QuantifiedInterpolants, 38563436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 212 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3175972 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/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-20-48-374.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-20-48-374.csv Completed graceful shutdown