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 08:37:15,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:37:15,904 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:37:15,916 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:37:15,917 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:37:15,918 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:37:15,919 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:37:15,921 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:37:15,923 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:37:15,924 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:37:15,925 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 08:37:15,940 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:37:15,940 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:37:15,941 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:37:15,942 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:37:15,943 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:37:15,944 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:37:15,945 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:37:15,945 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:37:15,946 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:37:15,948 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:37:15,973 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:37:15,974 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:37:15,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:37:15,975 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:37:15,975 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:37:15,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:37:15,976 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:37:15,976 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:37:16,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:37:16,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:37:16,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:37:16,069 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:37:16,070 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:37:16,071 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl [2018-07-25 08:37:16,072 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl' [2018-07-25 08:37:16,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:37:16,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:37:16,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:37:16,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:37:16,125 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:37:16,145 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,157 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:37:16,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:37:16,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:37:16,165 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:37:16,176 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,177 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,177 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,178 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,180 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,184 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,185 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:37:16,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:37:16,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:37:16,188 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:37:16,189 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 08:37:16" (1/1) ... [2018-07-25 08:37:16,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-25 08:37:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:37:16,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:37:16,450 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:37:16,452 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 08:37:16 BoogieIcfgContainer [2018-07-25 08:37:16,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:37:16,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:37:16,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:37:16,458 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:37:16,458 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 08:37:16" (1/2) ... [2018-07-25 08:37:16,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2270f692 and model type count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:37:16, skipping insertion in model container [2018-07-25 08:37:16,460 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 08:37:16" (2/2) ... [2018-07-25 08:37:16,463 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl [2018-07-25 08:37:16,475 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:37:16,483 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:37:16,539 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:37:16,540 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:37:16,540 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:37:16,540 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:37:16,541 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:37:16,541 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:37:16,541 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:37:16,541 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:37:16,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:37:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:37:16,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:37:16,569 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:16,570 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:37:16,572 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:16,578 INFO L82 PathProgramCache]: Analyzing trace with hash 947099, now seen corresponding path program 1 times [2018-07-25 08:37:16,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:16,671 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:37:16,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:37:16,680 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:37:16,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:37:16,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:37:16,699 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 08:37:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:16,775 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:37:16,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:37:16,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:37:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:16,800 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:37:16,801 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:37:16,805 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:37:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:37:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 08:37:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:37:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:37:16,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:37:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:16,851 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:37:16,851 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:37:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:37:16,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:37:16,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:16,853 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:37:16,853 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash 910108837, now seen corresponding path program 1 times [2018-07-25 08:37:16,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:16,889 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 08:37:16,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:16,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:37:16,892 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:37:16,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:37:16,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:37:16,893 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 08:37:16,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:16,929 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:37:16,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:37:16,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 08:37:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:16,930 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:37:16,930 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:37:16,931 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:37:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:37:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 08:37:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:37:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:37:16,935 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:37:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:16,935 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:37:16,936 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:37:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:37:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:37:16,936 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:16,937 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:37:16,937 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1558789329, now seen corresponding path program 2 times [2018-07-25 08:37:16,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:16,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:16,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:37:16,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:37:16,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:37:16,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:37:16,983 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-07-25 08:37:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:17,035 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 08:37:17,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:37:17,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-07-25 08:37:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:17,037 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:37:17,037 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:37:17,038 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 08:37:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:37:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-07-25 08:37:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:37:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:37:17,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:37:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:17,042 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:37:17,042 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:37:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:37:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:37:17,043 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:17,043 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:37:17,043 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:17,044 INFO L82 PathProgramCache]: Analyzing trace with hash 946987833, now seen corresponding path program 3 times [2018-07-25 08:37:17,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:17,097 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 08:37:17,099 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:17,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:37:17,100 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:37:17,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:37:17,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:37:17,104 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-07-25 08:37:17,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:17,208 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 08:37:17,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:37:17,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-25 08:37:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:17,209 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:37:17,209 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:37:17,210 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 08:37:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:37:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-07-25 08:37:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:37:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:37:17,217 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:37:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:17,218 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:37:17,218 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:37:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:37:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:37:17,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:17,219 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:37:17,219 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:17,220 INFO L82 PathProgramCache]: Analyzing trace with hash -477812541, now seen corresponding path program 4 times [2018-07-25 08:37:17,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:17,284 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 08:37:17,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:17,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:17,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:17,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:17,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:17,292 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2018-07-25 08:37:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:17,344 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 08:37:17,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:37:17,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:37:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:17,345 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:37:17,346 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:37:17,347 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 08:37:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:37:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-07-25 08:37:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:37:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:37:17,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:37:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:17,352 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:37:17,352 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:37:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:37:17,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:17,354 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:37:17,354 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:17,354 INFO L82 PathProgramCache]: Analyzing trace with hash 383595469, now seen corresponding path program 5 times [2018-07-25 08:37:17,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:17,400 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 08:37:17,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:17,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:17,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:17,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:17,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:17,409 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2018-07-25 08:37:17,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:17,486 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-25 08:37:17,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:37:17,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-07-25 08:37:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:17,487 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:37:17,488 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:37:17,488 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 08:37:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:37:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-07-25 08:37:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:37:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:37:17,494 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 08:37:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:17,495 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:37:17,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:37:17,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:17,496 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:17,496 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 08:37:17,496 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:17,497 INFO L82 PathProgramCache]: Analyzing trace with hash -731995049, now seen corresponding path program 6 times [2018-07-25 08:37:17,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:17,539 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 08:37:17,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:17,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:37:17,541 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:37:17,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:37:17,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:37:17,541 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2018-07-25 08:37:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:17,614 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 08:37:17,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:37:17,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2018-07-25 08:37:17,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:17,615 INFO L225 Difference]: With dead ends: 22 [2018-07-25 08:37:17,615 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:37:17,616 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 08:37:17,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:37:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-07-25 08:37:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:37:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:37:17,624 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 08:37:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:17,624 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:37:17,624 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:37:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:37:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:17,625 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:17,626 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 08:37:17,626 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash 927341153, now seen corresponding path program 7 times [2018-07-25 08:37:17,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:17,678 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 08:37:17,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:17,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:37:17,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:37:17,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:37:17,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:37:17,680 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2018-07-25 08:37:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:17,749 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-25 08:37:17,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:37:17,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-07-25 08:37:17,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:17,751 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:37:17,751 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:37:17,752 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 08:37:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:37:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-07-25 08:37:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:37:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:37:17,757 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 08:37:17,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:17,758 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:37:17,758 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:37:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:37:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:37:17,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:17,759 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 08:37:17,759 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:17,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2116564459, now seen corresponding path program 8 times [2018-07-25 08:37:17,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:17,806 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 08:37:17,807 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:17,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:37:17,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:37:17,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:37:17,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:37:17,811 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 12 states. [2018-07-25 08:37:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:17,888 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-25 08:37:17,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:37:17,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-25 08:37:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:17,890 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:37:17,890 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:37:17,892 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 08:37:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:37:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-07-25 08:37:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:37:17,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:37:17,906 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 08:37:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:17,906 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:37:17,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:37:17,907 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:37:17,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:17,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:17,910 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 08:37:17,910 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1796106507, now seen corresponding path program 9 times [2018-07-25 08:37:17,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:17,970 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 08:37:17,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:17,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:37:17,971 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:37:17,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:37:17,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:37:17,973 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 13 states. [2018-07-25 08:37:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:18,049 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-25 08:37:18,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:37:18,050 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2018-07-25 08:37:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:18,051 INFO L225 Difference]: With dead ends: 28 [2018-07-25 08:37:18,051 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:37:18,052 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 08:37:18,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:37:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-07-25 08:37:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:37:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:37:18,061 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 08:37:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:18,061 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:37:18,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:37:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:37:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:37:18,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:18,063 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 08:37:18,063 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:18,064 INFO L82 PathProgramCache]: Analyzing trace with hash 518446463, now seen corresponding path program 10 times [2018-07-25 08:37:18,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:18,112 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 08:37:18,114 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:18,114 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:37:18,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:37:18,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:37:18,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:37:18,116 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 14 states. [2018-07-25 08:37:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:18,177 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-25 08:37:18,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:37:18,178 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2018-07-25 08:37:18,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:18,179 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:37:18,179 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:37:18,180 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 08:37:18,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:37:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-07-25 08:37:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:37:18,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:37:18,187 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 08:37:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:18,188 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:37:18,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:37:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:37:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:37:18,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:18,190 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 08:37:18,190 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:18,190 INFO L82 PathProgramCache]: Analyzing trace with hash 10791305, now seen corresponding path program 11 times [2018-07-25 08:37:18,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:18,238 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 08:37:18,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:18,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:37:18,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:37:18,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:37:18,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:37:18,242 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 15 states. [2018-07-25 08:37:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:18,320 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-25 08:37:18,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:37:18,320 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2018-07-25 08:37:18,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:18,323 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:37:18,323 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:37:18,324 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 08:37:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:37:18,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-07-25 08:37:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:37:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:37:18,331 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 08:37:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:18,332 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:37:18,332 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:37:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:37:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:37:18,333 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:18,333 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 08:37:18,334 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:18,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1780456211, now seen corresponding path program 12 times [2018-07-25 08:37:18,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:18,385 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 08:37:18,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:18,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:37:18,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:37:18,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:37:18,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:37:18,387 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 16 states. [2018-07-25 08:37:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:18,460 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-25 08:37:18,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:37:18,461 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2018-07-25 08:37:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:18,461 INFO L225 Difference]: With dead ends: 34 [2018-07-25 08:37:18,462 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:37:18,463 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 08:37:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:37:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-07-25 08:37:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:37:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:37:18,469 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 08:37:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:18,469 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:37:18,470 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:37:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:37:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:37:18,471 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:18,471 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 08:37:18,471 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1621381661, now seen corresponding path program 13 times [2018-07-25 08:37:18,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:18,528 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 08:37:18,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:18,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:37:18,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:37:18,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:37:18,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:37:18,531 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 17 states. [2018-07-25 08:37:18,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:18,610 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-25 08:37:18,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:37:18,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-07-25 08:37:18,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:18,611 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:37:18,611 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:37:18,612 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 08:37:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:37:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-07-25 08:37:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:37:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:37:18,618 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 08:37:18,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:18,619 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:37:18,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:37:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:37:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:37:18,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:18,620 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 08:37:18,621 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:18,621 INFO L82 PathProgramCache]: Analyzing trace with hash -925405529, now seen corresponding path program 14 times [2018-07-25 08:37:18,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:18,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:18,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:37:18,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:37:18,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:37:18,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:37:18,686 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 18 states. [2018-07-25 08:37:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:18,777 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-25 08:37:18,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:37:18,778 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 32 [2018-07-25 08:37:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:18,781 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:37:18,781 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:37:18,782 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 08:37:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:37:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-07-25 08:37:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:37:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:37:18,791 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 08:37:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:18,793 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:37:18,793 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:37:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:37:18,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:37:18,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:18,795 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 08:37:18,795 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:18,796 INFO L82 PathProgramCache]: Analyzing trace with hash -256536399, now seen corresponding path program 15 times [2018-07-25 08:37:18,796 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:18,881 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 08:37:18,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:18,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:37:18,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:37:18,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:37:18,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:37:18,883 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 19 states. [2018-07-25 08:37:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:19,001 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-25 08:37:19,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:37:19,001 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2018-07-25 08:37:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:19,002 INFO L225 Difference]: With dead ends: 40 [2018-07-25 08:37:19,003 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:37:19,004 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 08:37:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:37:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-07-25 08:37:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:37:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:37:19,013 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 08:37:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:19,014 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:37:19,014 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:37:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:37:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:37:19,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:19,015 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 08:37:19,016 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:19,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1718396869, now seen corresponding path program 16 times [2018-07-25 08:37:19,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:19,083 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 08:37:19,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:19,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:37:19,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:37:19,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:37:19,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:37:19,085 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 20 states. [2018-07-25 08:37:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:19,180 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-25 08:37:19,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:37:19,180 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 36 [2018-07-25 08:37:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:19,181 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:37:19,181 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:37:19,183 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 08:37:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:37:19,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-07-25 08:37:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:37:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:37:19,196 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 08:37:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:19,197 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:37:19,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:37:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:37:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:37:19,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:19,198 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 08:37:19,198 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:19,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2112002747, now seen corresponding path program 17 times [2018-07-25 08:37:19,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:19,271 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 08:37:19,272 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:19,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:37:19,272 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:37:19,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:37:19,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:37:19,274 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 21 states. [2018-07-25 08:37:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:19,373 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-25 08:37:19,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:37:19,374 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2018-07-25 08:37:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:19,375 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:37:19,375 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:37:19,376 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 08:37:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:37:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-07-25 08:37:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:37:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:37:19,382 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 08:37:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:19,382 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:37:19,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:37:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:37:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:37:19,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:19,384 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 08:37:19,384 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:19,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1884837839, now seen corresponding path program 18 times [2018-07-25 08:37:19,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:19,465 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 08:37:19,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:19,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:37:19,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:37:19,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:37:19,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:37:19,468 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 22 states. [2018-07-25 08:37:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:19,587 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-25 08:37:19,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:37:19,587 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2018-07-25 08:37:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:19,588 INFO L225 Difference]: With dead ends: 46 [2018-07-25 08:37:19,588 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:37:19,590 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 08:37:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:37:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-07-25 08:37:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:37:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:37:19,599 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 08:37:19,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:19,599 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:37:19,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:37:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:37:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:37:19,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:19,601 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 08:37:19,601 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1147088935, now seen corresponding path program 19 times [2018-07-25 08:37:19,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:19,689 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 08:37:19,690 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:19,690 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:37:19,690 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:37:19,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:37:19,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:37:19,693 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 23 states. [2018-07-25 08:37:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:19,803 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-25 08:37:19,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:37:19,803 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2018-07-25 08:37:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:19,804 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:37:19,804 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:37:19,806 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 08:37:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:37:19,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2018-07-25 08:37:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:37:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:37:19,819 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 08:37:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:19,820 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:37:19,820 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:37:19,820 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:37:19,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:37:19,820 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:19,821 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 08:37:19,821 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:19,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1454075235, now seen corresponding path program 20 times [2018-07-25 08:37:19,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:19,908 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 08:37:19,909 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:19,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:37:19,909 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:37:19,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:37:19,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:37:19,911 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 24 states. [2018-07-25 08:37:20,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:20,033 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-25 08:37:20,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:37:20,034 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2018-07-25 08:37:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:20,034 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:37:20,035 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:37:20,036 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 08:37:20,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:37:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2018-07-25 08:37:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:37:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:37:20,043 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 08:37:20,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:20,043 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:37:20,043 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:37:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:37:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:37:20,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:20,044 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 08:37:20,045 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:20,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1501876333, now seen corresponding path program 21 times [2018-07-25 08:37:20,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:20,147 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 08:37:20,148 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:20,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:37:20,149 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:37:20,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:37:20,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:37:20,150 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 25 states. [2018-07-25 08:37:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:20,276 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-25 08:37:20,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:37:20,277 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2018-07-25 08:37:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:20,277 INFO L225 Difference]: With dead ends: 52 [2018-07-25 08:37:20,278 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:37:20,283 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 08:37:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:37:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-07-25 08:37:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:37:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:37:20,291 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 08:37:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:20,292 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:37:20,292 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:37:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:37:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:37:20,293 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:20,293 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 08:37:20,294 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:20,294 INFO L82 PathProgramCache]: Analyzing trace with hash 194091255, now seen corresponding path program 22 times [2018-07-25 08:37:20,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:20,441 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 08:37:20,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:20,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:37:20,442 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:37:20,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:37:20,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:37:20,443 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 26 states. [2018-07-25 08:37:20,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:20,571 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-25 08:37:20,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:37:20,571 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 48 [2018-07-25 08:37:20,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:20,572 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:37:20,572 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:37:20,574 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 08:37:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:37:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-07-25 08:37:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:37:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:37:20,586 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 08:37:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:20,587 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:37:20,587 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:37:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:37:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:37:20,587 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:20,587 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 08:37:20,588 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:20,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1838049025, now seen corresponding path program 23 times [2018-07-25 08:37:20,588 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:20,684 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 08:37:20,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:20,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:37:20,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:37:20,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:37:20,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:37:20,686 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 27 states. [2018-07-25 08:37:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:20,816 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-25 08:37:20,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:37:20,816 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2018-07-25 08:37:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:20,817 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:37:20,817 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:37:20,818 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 08:37:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:37:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2018-07-25 08:37:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:37:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:37:20,824 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 08:37:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:20,825 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:37:20,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:37:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:37:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:37:20,825 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:20,825 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 08:37:20,826 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:20,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1133501067, now seen corresponding path program 24 times [2018-07-25 08:37:20,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:20,922 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 08:37:20,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:20,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:37:20,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:37:20,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:37:20,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:37:20,924 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 28 states. [2018-07-25 08:37:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:21,068 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-25 08:37:21,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:37:21,068 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2018-07-25 08:37:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:21,069 INFO L225 Difference]: With dead ends: 58 [2018-07-25 08:37:21,069 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:37:21,071 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 08:37:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:37:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-07-25 08:37:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:37:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:37:21,083 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 08:37:21,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:21,083 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:37:21,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:37:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:37:21,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:37:21,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:21,084 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 08:37:21,084 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:21,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1627221099, now seen corresponding path program 25 times [2018-07-25 08:37:21,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:21,189 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 08:37:21,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:21,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:37:21,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:37:21,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:37:21,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:37:21,191 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 29 states. [2018-07-25 08:37:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:21,319 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-25 08:37:21,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:37:21,319 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2018-07-25 08:37:21,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:21,320 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:37:21,320 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:37:21,322 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 08:37:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:37:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-07-25 08:37:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:37:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:37:21,328 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 08:37:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:21,328 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:37:21,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:37:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:37:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:37:21,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:21,331 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 08:37:21,331 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:21,331 INFO L82 PathProgramCache]: Analyzing trace with hash -391433697, now seen corresponding path program 26 times [2018-07-25 08:37:21,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:21,426 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 08:37:21,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:21,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:37:21,427 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:37:21,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:37:21,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:37:21,428 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 30 states. [2018-07-25 08:37:21,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:21,571 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-25 08:37:21,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:37:21,572 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2018-07-25 08:37:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:21,572 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:37:21,573 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:37:21,575 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 08:37:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:37:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2018-07-25 08:37:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:37:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:37:21,580 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 08:37:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:21,581 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:37:21,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:37:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:37:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:37:21,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:21,584 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 08:37:21,585 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:21,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1789285929, now seen corresponding path program 27 times [2018-07-25 08:37:21,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:21,679 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 08:37:21,680 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:21,680 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:37:21,680 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:37:21,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:37:21,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:37:21,682 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 31 states. [2018-07-25 08:37:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:21,822 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-25 08:37:21,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:37:21,822 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2018-07-25 08:37:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:21,823 INFO L225 Difference]: With dead ends: 64 [2018-07-25 08:37:21,823 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:37:21,825 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 08:37:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:37:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-07-25 08:37:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:37:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:37:21,830 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 08:37:21,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:21,830 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:37:21,830 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:37:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:37:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:37:21,831 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:21,831 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 08:37:21,831 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:21,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1516806067, now seen corresponding path program 28 times [2018-07-25 08:37:21,832 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:21,929 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 08:37:21,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:21,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:37:21,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:37:21,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:37:21,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:37:21,931 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 32 states. [2018-07-25 08:37:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:22,074 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-25 08:37:22,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:37:22,074 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 60 [2018-07-25 08:37:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:22,075 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:37:22,075 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:37:22,077 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 08:37:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:37:22,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2018-07-25 08:37:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:37:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:37:22,082 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 08:37:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:22,082 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:37:22,082 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:37:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:37:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:37:22,083 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:22,083 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 08:37:22,083 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:22,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1656663741, now seen corresponding path program 29 times [2018-07-25 08:37:22,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:22,183 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 08:37:22,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:22,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:37:22,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:37:22,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:37:22,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:37:22,185 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 33 states. [2018-07-25 08:37:22,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:22,332 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-25 08:37:22,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:37:22,333 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2018-07-25 08:37:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:22,334 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:37:22,334 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:37:22,336 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 08:37:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:37:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2018-07-25 08:37:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:37:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:37:22,341 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 08:37:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:22,341 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:37:22,342 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:37:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:37:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:37:22,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:22,343 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 08:37:22,343 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:22,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1379065017, now seen corresponding path program 30 times [2018-07-25 08:37:22,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:22,447 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 08:37:22,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:22,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:37:22,448 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:37:22,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:37:22,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:37:22,449 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 34 states. [2018-07-25 08:37:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:22,611 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-25 08:37:22,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:37:22,611 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 64 [2018-07-25 08:37:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:22,612 INFO L225 Difference]: With dead ends: 70 [2018-07-25 08:37:22,612 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:37:22,614 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:37:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:37:22,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2018-07-25 08:37:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:37:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:37:22,620 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 08:37:22,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:22,620 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:37:22,620 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:37:22,620 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:37:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:37:22,621 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:22,621 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 08:37:22,621 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1863359825, now seen corresponding path program 31 times [2018-07-25 08:37:22,622 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:22,745 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 08:37:22,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:22,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:37:22,746 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:37:22,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:37:22,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:37:22,748 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 35 states. [2018-07-25 08:37:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:22,964 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-25 08:37:22,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:37:22,965 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 66 [2018-07-25 08:37:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:22,965 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:37:22,965 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:37:22,970 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 08:37:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:37:22,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-07-25 08:37:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:37:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:37:22,976 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 08:37:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:22,976 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:37:22,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:37:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:37:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:37:22,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:22,977 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 08:37:22,977 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash -312623909, now seen corresponding path program 32 times [2018-07-25 08:37:22,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:23,092 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 08:37:23,092 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:23,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:37:23,093 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:37:23,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:37:23,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:37:23,096 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 36 states. [2018-07-25 08:37:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:23,240 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-25 08:37:23,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:37:23,240 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 68 [2018-07-25 08:37:23,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:23,241 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:37:23,241 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:37:23,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:37:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:37:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2018-07-25 08:37:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:37:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:37:23,249 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 08:37:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:23,250 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:37:23,250 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:37:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:37:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:37:23,251 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:23,251 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 08:37:23,251 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:23,252 INFO L82 PathProgramCache]: Analyzing trace with hash 216080869, now seen corresponding path program 33 times [2018-07-25 08:37:23,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:23,358 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 08:37:23,358 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:23,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:37:23,359 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:37:23,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:37:23,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:37:23,360 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 37 states. [2018-07-25 08:37:23,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:23,522 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-25 08:37:23,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:37:23,522 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2018-07-25 08:37:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:23,523 INFO L225 Difference]: With dead ends: 76 [2018-07-25 08:37:23,523 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:37:23,524 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:37:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:37:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2018-07-25 08:37:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:37:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:37:23,531 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 08:37:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:23,531 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:37:23,531 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:37:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:37:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:37:23,532 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:23,532 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 08:37:23,533 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1495231599, now seen corresponding path program 34 times [2018-07-25 08:37:23,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:23,659 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 08:37:23,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:23,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:37:23,660 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:37:23,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:37:23,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:37:23,661 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 38 states. [2018-07-25 08:37:23,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:23,836 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-25 08:37:23,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:37:23,836 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 72 [2018-07-25 08:37:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:23,837 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:37:23,837 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:37:23,840 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:37:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:37:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2018-07-25 08:37:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:37:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:37:23,845 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 08:37:23,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:23,845 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:37:23,845 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:37:23,845 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:37:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:37:23,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:23,846 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 08:37:23,847 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:23,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1896530823, now seen corresponding path program 35 times [2018-07-25 08:37:23,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:23,972 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 08:37:23,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:23,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:37:23,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:37:23,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:37:23,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:37:23,974 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 39 states. [2018-07-25 08:37:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:24,136 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-25 08:37:24,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:37:24,136 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 74 [2018-07-25 08:37:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:24,137 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:37:24,137 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:37:24,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:37:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:37:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2018-07-25 08:37:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:37:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:37:24,144 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 08:37:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:24,145 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:37:24,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:37:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:37:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:37:24,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:24,146 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 08:37:24,146 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:24,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1500040701, now seen corresponding path program 36 times [2018-07-25 08:37:24,148 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:24,262 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 08:37:24,262 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:24,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:37:24,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:37:24,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:37:24,265 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:37:24,265 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 40 states. [2018-07-25 08:37:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:24,426 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-25 08:37:24,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:37:24,427 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 76 [2018-07-25 08:37:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:24,428 INFO L225 Difference]: With dead ends: 82 [2018-07-25 08:37:24,428 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:37:24,429 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:37:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:37:24,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2018-07-25 08:37:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:37:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:37:24,434 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 08:37:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:24,434 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:37:24,434 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:37:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:37:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:37:24,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:24,437 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 08:37:24,437 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:24,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1569844493, now seen corresponding path program 37 times [2018-07-25 08:37:24,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:24,550 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 08:37:24,551 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:24,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:37:24,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:37:24,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:37:24,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:37:24,552 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 41 states. [2018-07-25 08:37:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:24,729 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-25 08:37:24,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:37:24,729 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 78 [2018-07-25 08:37:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:24,730 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:37:24,730 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:37:24,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:37:24,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:37:24,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2018-07-25 08:37:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:37:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:37:24,738 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 08:37:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:24,738 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:37:24,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:37:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:37:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:37:24,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:24,739 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 08:37:24,740 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:24,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1086983575, now seen corresponding path program 38 times [2018-07-25 08:37:24,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:24,857 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 08:37:24,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:24,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:37:24,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:37:24,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:37:24,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:37:24,859 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 42 states. [2018-07-25 08:37:25,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:25,065 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-25 08:37:25,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:37:25,066 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 80 [2018-07-25 08:37:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:25,067 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:37:25,067 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:37:25,069 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 08:37:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:37:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2018-07-25 08:37:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:37:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:37:25,077 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 08:37:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:25,077 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:37:25,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:37:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:37:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:37:25,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:25,078 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 08:37:25,079 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:25,079 INFO L82 PathProgramCache]: Analyzing trace with hash 914109345, now seen corresponding path program 39 times [2018-07-25 08:37:25,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:25,244 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 08:37:25,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:25,245 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:37:25,245 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:37:25,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:37:25,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:37:25,246 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 43 states. [2018-07-25 08:37:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:25,503 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-25 08:37:25,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:37:25,504 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 82 [2018-07-25 08:37:25,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:25,504 INFO L225 Difference]: With dead ends: 88 [2018-07-25 08:37:25,505 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:37:25,505 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 08:37:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:37:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2018-07-25 08:37:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:37:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:37:25,511 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 08:37:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:25,512 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:37:25,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:37:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:37:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:37:25,512 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:25,513 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 08:37:25,513 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2009268437, now seen corresponding path program 40 times [2018-07-25 08:37:25,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:25,628 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 08:37:25,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:25,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:37:25,629 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:37:25,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:37:25,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:37:25,630 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 44 states. [2018-07-25 08:37:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:25,812 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-25 08:37:25,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:37:25,813 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 84 [2018-07-25 08:37:25,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:25,813 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:37:25,814 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:37:25,816 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2709, Invalid=4431, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:37:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:37:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2018-07-25 08:37:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:37:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:37:25,824 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 08:37:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:25,824 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:37:25,824 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:37:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:37:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:37:25,825 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:25,826 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 08:37:25,826 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:25,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1828261941, now seen corresponding path program 41 times [2018-07-25 08:37:25,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:25,962 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 08:37:25,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:25,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:37:25,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:37:25,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:37:25,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:37:25,964 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 45 states. [2018-07-25 08:37:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:26,151 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-25 08:37:26,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:37:26,151 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 86 [2018-07-25 08:37:26,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:26,152 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:37:26,152 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:37:26,154 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 08:37:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:37:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2018-07-25 08:37:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:37:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:37:26,161 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 08:37:26,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:26,163 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:37:26,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:37:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:37:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:37:26,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:26,164 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 08:37:26,164 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:26,164 INFO L82 PathProgramCache]: Analyzing trace with hash 318047935, now seen corresponding path program 42 times [2018-07-25 08:37:26,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:26,299 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 08:37:26,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:26,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:37:26,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:37:26,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:37:26,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:37:26,301 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 46 states. [2018-07-25 08:37:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:26,523 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-25 08:37:26,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:37:26,524 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 88 [2018-07-25 08:37:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:26,526 INFO L225 Difference]: With dead ends: 94 [2018-07-25 08:37:26,526 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:37:26,527 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 08:37:26,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:37:26,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2018-07-25 08:37:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:37:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:37:26,535 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 08:37:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:26,536 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:37:26,536 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:37:26,536 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:37:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:37:26,537 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:26,537 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 08:37:26,537 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:26,538 INFO L82 PathProgramCache]: Analyzing trace with hash 701334217, now seen corresponding path program 43 times [2018-07-25 08:37:26,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:26,677 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 08:37:26,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:26,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:37:26,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:37:26,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:37:26,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:37:26,680 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 47 states. [2018-07-25 08:37:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:26,890 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-25 08:37:26,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:37:26,890 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 90 [2018-07-25 08:37:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:26,891 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:37:26,891 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:37:26,893 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 08:37:26,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:37:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2018-07-25 08:37:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:37:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:37:26,900 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 08:37:26,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:26,901 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:37:26,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:37:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:37:26,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:37:26,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:26,902 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 08:37:26,903 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:26,903 INFO L82 PathProgramCache]: Analyzing trace with hash -327736237, now seen corresponding path program 44 times [2018-07-25 08:37:26,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:27,046 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 08:37:27,047 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:27,047 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:37:27,047 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:37:27,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:37:27,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:37:27,048 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 48 states. [2018-07-25 08:37:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:27,278 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-25 08:37:27,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:37:27,278 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 92 [2018-07-25 08:37:27,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:27,279 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:37:27,279 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:37:27,281 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 08:37:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:37:27,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2018-07-25 08:37:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:37:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:37:27,287 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 08:37:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:27,288 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:37:27,288 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:37:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:37:27,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:37:27,290 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:27,290 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 08:37:27,290 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:27,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1421964451, now seen corresponding path program 45 times [2018-07-25 08:37:27,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:27,459 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 08:37:27,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:27,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:37:27,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:37:27,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:37:27,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:37:27,462 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 49 states. [2018-07-25 08:37:27,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:27,725 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-25 08:37:27,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:37:27,725 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 94 [2018-07-25 08:37:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:27,726 INFO L225 Difference]: With dead ends: 100 [2018-07-25 08:37:27,726 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:37:27,727 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 08:37:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:37:27,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2018-07-25 08:37:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:37:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:37:27,736 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 08:37:27,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:27,736 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:37:27,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:37:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:37:27,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:37:27,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:27,737 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 08:37:27,738 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:27,738 INFO L82 PathProgramCache]: Analyzing trace with hash -708290585, now seen corresponding path program 46 times [2018-07-25 08:37:27,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:27,923 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 08:37:27,923 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:27,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:37:27,924 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:37:27,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:37:27,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:37:27,925 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 50 states. [2018-07-25 08:37:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:28,238 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-25 08:37:28,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:37:28,239 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 96 [2018-07-25 08:37:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:28,239 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:37:28,240 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:37:28,240 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 08:37:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:37:28,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2018-07-25 08:37:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:37:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:37:28,247 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 08:37:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:28,247 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:37:28,247 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:37:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:37:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:37:28,248 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:28,249 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 08:37:28,249 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:28,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2062472719, now seen corresponding path program 47 times [2018-07-25 08:37:28,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:28,393 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 08:37:28,394 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:28,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:37:28,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:37:28,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:37:28,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:37:28,395 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 51 states. [2018-07-25 08:37:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:28,625 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-25 08:37:28,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:37:28,626 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 98 [2018-07-25 08:37:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:28,626 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:37:28,627 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:37:28,628 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 08:37:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:37:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2018-07-25 08:37:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:37:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:37:28,636 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 08:37:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:28,637 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:37:28,637 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:37:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:37:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:37:28,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:28,638 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 08:37:28,638 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:28,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2056412805, now seen corresponding path program 48 times [2018-07-25 08:37:28,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:28,779 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 08:37:28,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:28,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:37:28,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:37:28,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:37:28,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:37:28,781 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 52 states. [2018-07-25 08:37:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:28,999 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-25 08:37:28,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:37:29,000 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 100 [2018-07-25 08:37:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:29,000 INFO L225 Difference]: With dead ends: 106 [2018-07-25 08:37:29,001 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:37:29,002 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 08:37:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:37:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2018-07-25 08:37:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:37:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:37:29,010 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 08:37:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:29,010 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:37:29,010 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:37:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:37:29,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:37:29,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:29,012 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 08:37:29,012 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash -527802747, now seen corresponding path program 49 times [2018-07-25 08:37:29,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:29,149 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 08:37:29,149 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:29,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:37:29,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:37:29,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:37:29,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:37:29,151 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 53 states. [2018-07-25 08:37:29,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:29,381 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-25 08:37:29,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:37:29,381 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 102 [2018-07-25 08:37:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:29,382 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:37:29,383 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:37:29,384 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 08:37:29,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:37:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2018-07-25 08:37:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:37:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:37:29,392 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 08:37:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:29,392 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:37:29,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:37:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:37:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:37:29,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:29,393 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 08:37:29,394 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:29,394 INFO L82 PathProgramCache]: Analyzing trace with hash -412352241, now seen corresponding path program 50 times [2018-07-25 08:37:29,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:29,541 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 08:37:29,542 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:29,542 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:37:29,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:37:29,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:37:29,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:37:29,543 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 54 states. [2018-07-25 08:37:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:29,789 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-25 08:37:29,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:37:29,789 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 104 [2018-07-25 08:37:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:29,790 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:37:29,790 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:37:29,792 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 08:37:29,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:37:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2018-07-25 08:37:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:37:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:37:29,806 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 08:37:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:29,807 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:37:29,807 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:37:29,807 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:37:29,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:37:29,808 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:29,808 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 08:37:29,809 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:29,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1133565671, now seen corresponding path program 51 times [2018-07-25 08:37:29,809 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:29,979 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 08:37:29,979 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:29,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:37:29,979 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:37:29,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:37:29,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:37:29,981 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 55 states. [2018-07-25 08:37:30,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:30,238 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-25 08:37:30,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:37:30,238 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 106 [2018-07-25 08:37:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:30,239 INFO L225 Difference]: With dead ends: 112 [2018-07-25 08:37:30,239 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:37:30,240 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:37:30,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:37:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2018-07-25 08:37:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:37:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:37:30,248 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 08:37:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:30,249 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:37:30,249 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:37:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:37:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:37:30,250 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:30,250 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 08:37:30,250 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:30,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1565030051, now seen corresponding path program 52 times [2018-07-25 08:37:30,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:30,397 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 08:37:30,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:30,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:37:30,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:37:30,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:37:30,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:37:30,399 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 56 states. [2018-07-25 08:37:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:30,655 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-25 08:37:30,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:37:30,655 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 108 [2018-07-25 08:37:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:30,656 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:37:30,656 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:37:30,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4455, Invalid=7317, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:37:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:37:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2018-07-25 08:37:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:37:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:37:30,664 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 08:37:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:30,664 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:37:30,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:37:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:37:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:37:30,665 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:30,666 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 08:37:30,666 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash 755272109, now seen corresponding path program 53 times [2018-07-25 08:37:30,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:30,817 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 08:37:30,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:30,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:37:30,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:37:30,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:37:30,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:37:30,819 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 57 states. [2018-07-25 08:37:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:31,046 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-25 08:37:31,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:37:31,047 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 110 [2018-07-25 08:37:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:31,048 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:37:31,048 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:37:31,049 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 08:37:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:37:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2018-07-25 08:37:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:37:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:37:31,057 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 08:37:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:31,057 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:37:31,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:37:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:37:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:37:31,058 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:31,058 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 08:37:31,058 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash -33029577, now seen corresponding path program 54 times [2018-07-25 08:37:31,059 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:31,206 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 08:37:31,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:31,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:37:31,207 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:37:31,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:37:31,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:37:31,208 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 58 states. [2018-07-25 08:37:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:31,467 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-25 08:37:31,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:37:31,468 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 112 [2018-07-25 08:37:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:31,469 INFO L225 Difference]: With dead ends: 118 [2018-07-25 08:37:31,469 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:37:31,471 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 08:37:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:37:31,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2018-07-25 08:37:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:37:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:37:31,478 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 08:37:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:31,478 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:37:31,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:37:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:37:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:37:31,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:31,480 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 08:37:31,480 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:31,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1676705727, now seen corresponding path program 55 times [2018-07-25 08:37:31,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:31,635 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 08:37:31,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:31,639 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:37:31,639 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:37:31,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:37:31,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:37:31,640 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 59 states. [2018-07-25 08:37:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:31,906 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-25 08:37:31,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:37:31,906 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 114 [2018-07-25 08:37:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:31,907 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:37:31,907 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:37:31,909 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 08:37:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:37:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2018-07-25 08:37:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:37:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:37:31,915 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 08:37:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:31,916 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:37:31,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:37:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:37:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:37:31,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:31,917 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 08:37:31,918 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:31,918 INFO L82 PathProgramCache]: Analyzing trace with hash -701520949, now seen corresponding path program 56 times [2018-07-25 08:37:31,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:32,095 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 08:37:32,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:32,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:37:32,098 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:37:32,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:37:32,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:37:32,100 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 60 states. [2018-07-25 08:37:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:32,385 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-25 08:37:32,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:37:32,386 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 116 [2018-07-25 08:37:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:32,387 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:37:32,387 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:37:32,388 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 08:37:32,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:37:32,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2018-07-25 08:37:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:37:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:37:32,395 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 08:37:32,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:32,395 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:37:32,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:37:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:37:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:37:32,396 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:32,396 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 08:37:32,396 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:32,397 INFO L82 PathProgramCache]: Analyzing trace with hash 148180181, now seen corresponding path program 57 times [2018-07-25 08:37:32,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:32,560 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 08:37:32,560 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:32,561 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:37:32,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:37:32,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:37:32,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:37:32,563 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 61 states. [2018-07-25 08:37:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:32,905 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-25 08:37:32,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:37:32,905 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 118 [2018-07-25 08:37:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:32,906 INFO L225 Difference]: With dead ends: 124 [2018-07-25 08:37:32,906 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:37:32,908 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 08:37:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:37:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2018-07-25 08:37:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:37:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:37:32,916 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 08:37:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:32,917 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:37:32,917 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:37:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:37:32,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:37:32,918 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:32,918 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 08:37:32,919 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:32,919 INFO L82 PathProgramCache]: Analyzing trace with hash 667179871, now seen corresponding path program 58 times [2018-07-25 08:37:32,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:33,174 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 08:37:33,175 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:33,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:37:33,175 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:37:33,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:37:33,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:37:33,176 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 62 states. [2018-07-25 08:37:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:33,405 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-25 08:37:33,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:37:33,406 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 120 [2018-07-25 08:37:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:33,407 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:37:33,407 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:37:33,408 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 08:37:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:37:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2018-07-25 08:37:33,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:37:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:37:33,415 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 08:37:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:33,415 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:37:33,415 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:37:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:37:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:37:33,416 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:33,417 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 08:37:33,417 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1209675625, now seen corresponding path program 59 times [2018-07-25 08:37:33,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:33,559 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 08:37:33,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:33,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:37:33,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:37:33,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:37:33,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:37:33,560 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 63 states. [2018-07-25 08:37:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:33,825 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-25 08:37:33,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:37:33,826 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 122 [2018-07-25 08:37:33,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:33,827 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:37:33,827 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:37:33,828 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:37:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:37:33,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2018-07-25 08:37:33,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:37:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:37:33,834 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 08:37:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:33,835 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:37:33,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:37:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:37:33,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:37:33,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:33,836 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 08:37:33,836 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:33,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1437914893, now seen corresponding path program 60 times [2018-07-25 08:37:33,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:34,012 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 08:37:34,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:34,012 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:37:34,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:37:34,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:37:34,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:37:34,014 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 64 states. [2018-07-25 08:37:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:34,297 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-25 08:37:34,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:37:34,297 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 124 [2018-07-25 08:37:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:34,298 INFO L225 Difference]: With dead ends: 130 [2018-07-25 08:37:34,298 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:37:34,299 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 08:37:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:37:34,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2018-07-25 08:37:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:37:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:37:34,306 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 08:37:34,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:34,306 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:37:34,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:37:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:37:34,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:37:34,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:34,307 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 08:37:34,308 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:34,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1143203837, now seen corresponding path program 61 times [2018-07-25 08:37:34,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:34,494 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 08:37:34,494 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:34,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:37:34,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:37:34,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:37:34,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:37:34,496 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 65 states. [2018-07-25 08:37:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:34,818 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-25 08:37:34,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:37:34,819 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 126 [2018-07-25 08:37:34,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:34,820 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:37:34,820 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:37:34,821 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 08:37:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:37:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2018-07-25 08:37:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:37:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:37:34,829 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 08:37:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:34,829 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:37:34,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:37:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:37:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:37:34,831 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:34,831 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 08:37:34,831 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:34,831 INFO L82 PathProgramCache]: Analyzing trace with hash -892793721, now seen corresponding path program 62 times [2018-07-25 08:37:34,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:35,035 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 08:37:35,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:35,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:37:35,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:37:35,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:37:35,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:37:35,037 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 66 states. [2018-07-25 08:37:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:35,397 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-25 08:37:35,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:37:35,397 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 128 [2018-07-25 08:37:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:35,398 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:37:35,398 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:37:35,400 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6240, Invalid=10272, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:37:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:37:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2018-07-25 08:37:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:37:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:37:35,406 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 08:37:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:35,407 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:37:35,407 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:37:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:37:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:37:35,408 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:35,408 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 08:37:35,409 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:35,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1018640017, now seen corresponding path program 63 times [2018-07-25 08:37:35,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:35,645 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 08:37:35,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:35,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:37:35,646 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:37:35,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:37:35,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:37:35,647 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 67 states. [2018-07-25 08:37:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:35,920 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-25 08:37:35,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:37:35,920 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 130 [2018-07-25 08:37:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:35,921 INFO L225 Difference]: With dead ends: 136 [2018-07-25 08:37:35,922 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:37:35,923 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 08:37:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:37:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2018-07-25 08:37:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:37:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:37:35,930 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 08:37:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:35,931 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:37:35,931 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:37:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:37:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:37:35,932 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:35,932 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 08:37:35,932 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:35,933 INFO L82 PathProgramCache]: Analyzing trace with hash -339540453, now seen corresponding path program 64 times [2018-07-25 08:37:35,933 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:36,105 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 08:37:36,106 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:36,106 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:37:36,106 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:37:36,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:37:36,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:37:36,107 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 68 states. [2018-07-25 08:37:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:36,350 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-25 08:37:36,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:37:36,350 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 132 [2018-07-25 08:37:36,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:36,351 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:37:36,351 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:37:36,353 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 08:37:36,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:37:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2018-07-25 08:37:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:37:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:37:36,360 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 08:37:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:36,360 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:37:36,360 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:37:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:37:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:37:36,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:36,361 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 08:37:36,361 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash 119085861, now seen corresponding path program 65 times [2018-07-25 08:37:36,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:36,548 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 08:37:36,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:36,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:37:36,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:37:36,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:37:36,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:37:36,550 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 69 states. [2018-07-25 08:37:36,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:36,840 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-25 08:37:36,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:37:36,841 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 134 [2018-07-25 08:37:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:36,841 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:37:36,842 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:37:36,843 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 08:37:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:37:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2018-07-25 08:37:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:37:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:37:36,848 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 08:37:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:36,849 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:37:36,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:37:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:37:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:37:36,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:36,850 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 08:37:36,850 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:36,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1522657873, now seen corresponding path program 66 times [2018-07-25 08:37:36,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:37,046 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 08:37:37,047 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:37,047 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:37:37,047 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:37:37,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:37:37,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:37:37,048 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 70 states. [2018-07-25 08:37:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:37,416 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-25 08:37:37,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:37:37,416 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 136 [2018-07-25 08:37:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:37,418 INFO L225 Difference]: With dead ends: 142 [2018-07-25 08:37:37,418 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:37:37,419 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7038, Invalid=11594, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:37:37,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:37:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2018-07-25 08:37:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:37:37,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:37:37,427 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 08:37:37,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:37,428 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:37:37,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:37:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:37:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:37:37,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:37,429 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 08:37:37,430 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1309578681, now seen corresponding path program 67 times [2018-07-25 08:37:37,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:37,645 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 08:37:37,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:37,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:37:37,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:37:37,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:37:37,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:37:37,646 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 71 states. [2018-07-25 08:37:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:38,052 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-25 08:37:38,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:37:38,052 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 138 [2018-07-25 08:37:38,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:38,053 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:37:38,053 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:37:38,055 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 08:37:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:37:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2018-07-25 08:37:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:37:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:37:38,062 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 08:37:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:38,062 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:37:38,062 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:37:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:37:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:37:38,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:38,063 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 08:37:38,064 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:38,064 INFO L82 PathProgramCache]: Analyzing trace with hash 79641411, now seen corresponding path program 68 times [2018-07-25 08:37:38,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:38,412 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 08:37:38,412 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:38,412 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:37:38,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:37:38,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:37:38,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:37:38,414 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 72 states. [2018-07-25 08:37:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:38,694 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-25 08:37:38,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:37:38,694 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 140 [2018-07-25 08:37:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:38,695 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:37:38,695 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:37:38,696 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7455, Invalid=12285, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:37:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:37:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2018-07-25 08:37:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:37:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:37:38,702 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 08:37:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:38,703 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:37:38,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:37:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:37:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:37:38,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:38,704 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 08:37:38,704 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:38,704 INFO L82 PathProgramCache]: Analyzing trace with hash -774068659, now seen corresponding path program 69 times [2018-07-25 08:37:38,704 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:38,899 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 08:37:38,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:38,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:37:38,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:37:38,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:37:38,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:37:38,901 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 73 states. [2018-07-25 08:37:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:39,264 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-25 08:37:39,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:37:39,265 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 142 [2018-07-25 08:37:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:39,266 INFO L225 Difference]: With dead ends: 148 [2018-07-25 08:37:39,266 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:37:39,269 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 08:37:39,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:37:39,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-07-25 08:37:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:37:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:37:39,279 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 08:37:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:39,279 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:37:39,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:37:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:37:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:37:39,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:39,281 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 08:37:39,281 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:39,281 INFO L82 PathProgramCache]: Analyzing trace with hash -850692393, now seen corresponding path program 70 times [2018-07-25 08:37:39,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:39,513 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 08:37:39,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:39,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:37:39,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:37:39,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:37:39,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:37:39,515 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 74 states. [2018-07-25 08:37:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:39,891 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-25 08:37:39,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:37:39,891 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 144 [2018-07-25 08:37:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:39,892 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:37:39,892 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:37:39,894 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7884, Invalid=12996, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:37:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:37:39,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2018-07-25 08:37:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:37:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:37:39,901 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 08:37:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:39,901 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:37:39,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:37:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:37:39,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:37:39,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:39,902 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 08:37:39,903 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1471656735, now seen corresponding path program 71 times [2018-07-25 08:37:39,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:40,110 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 08:37:40,110 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:40,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:37:40,111 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:37:40,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:37:40,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:37:40,112 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 75 states. [2018-07-25 08:37:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:40,430 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-25 08:37:40,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:37:40,431 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 146 [2018-07-25 08:37:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:40,431 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:37:40,432 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:37:40,433 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 08:37:40,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:37:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2018-07-25 08:37:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:37:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:37:40,440 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 08:37:40,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:40,441 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:37:40,441 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:37:40,441 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:37:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:37:40,442 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:40,442 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 08:37:40,442 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:40,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1217935253, now seen corresponding path program 72 times [2018-07-25 08:37:40,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:40,625 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 08:37:40,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:40,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:37:40,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:37:40,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:37:40,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:37:40,627 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 76 states. [2018-07-25 08:37:40,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:40,936 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-25 08:37:40,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:37:40,937 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 148 [2018-07-25 08:37:40,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:40,938 INFO L225 Difference]: With dead ends: 154 [2018-07-25 08:37:40,938 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:37:40,940 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 08:37:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:37:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2018-07-25 08:37:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:37:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:37:40,947 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 08:37:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:40,947 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:37:40,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:37:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:37:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:37:40,948 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:40,948 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 08:37:40,948 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2090240373, now seen corresponding path program 73 times [2018-07-25 08:37:40,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:41,170 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 08:37:41,171 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:41,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:37:41,171 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:37:41,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:37:41,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:37:41,172 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 77 states. [2018-07-25 08:37:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:41,431 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-25 08:37:41,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:37:41,431 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 150 [2018-07-25 08:37:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:41,432 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:37:41,432 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:37:41,434 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 08:37:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:37:41,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2018-07-25 08:37:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:37:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:37:41,441 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 08:37:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:41,442 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:37:41,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:37:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:37:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:37:41,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:41,443 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 08:37:41,443 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:41,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1323749377, now seen corresponding path program 74 times [2018-07-25 08:37:41,443 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:41,606 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 08:37:41,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:41,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:37:41,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:37:41,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:37:41,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:37:41,607 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 78 states. [2018-07-25 08:37:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:41,883 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-25 08:37:41,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:37:41,883 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 152 [2018-07-25 08:37:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:41,884 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:37:41,884 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:37:41,886 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 08:37:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:37:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2018-07-25 08:37:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:37:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:37:41,891 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 08:37:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:41,892 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:37:41,892 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:37:41,892 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:37:41,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:37:41,893 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:41,893 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 08:37:41,893 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:41,893 INFO L82 PathProgramCache]: Analyzing trace with hash -812884983, now seen corresponding path program 75 times [2018-07-25 08:37:41,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:42,077 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 08:37:42,077 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:42,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:37:42,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:37:42,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:37:42,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:37:42,079 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 79 states. [2018-07-25 08:37:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:42,380 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-25 08:37:42,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:37:42,381 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 154 [2018-07-25 08:37:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:42,382 INFO L225 Difference]: With dead ends: 160 [2018-07-25 08:37:42,382 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:37:42,383 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 08:37:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:37:42,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2018-07-25 08:37:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:37:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:37:42,391 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 08:37:42,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:42,392 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:37:42,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:37:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:37:42,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:37:42,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:42,393 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 08:37:42,393 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:42,393 INFO L82 PathProgramCache]: Analyzing trace with hash 501525907, now seen corresponding path program 76 times [2018-07-25 08:37:42,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:42,600 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 08:37:42,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:42,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:37:42,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:37:42,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:37:42,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:37:42,602 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 80 states. [2018-07-25 08:37:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:42,930 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-25 08:37:42,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:37:42,931 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 156 [2018-07-25 08:37:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:42,932 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:37:42,932 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:37:42,933 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 08:37:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:37:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2018-07-25 08:37:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:37:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:37:42,941 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 08:37:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:42,941 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:37:42,941 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:37:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:37:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:37:42,942 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:42,942 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 08:37:42,942 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:42,943 INFO L82 PathProgramCache]: Analyzing trace with hash 930006173, now seen corresponding path program 77 times [2018-07-25 08:37:42,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:43,178 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 08:37:43,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:43,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:37:43,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:37:43,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:37:43,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:37:43,180 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 81 states. [2018-07-25 08:37:43,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:43,554 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-25 08:37:43,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:37:43,554 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 158 [2018-07-25 08:37:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:43,555 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:37:43,555 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:37:43,556 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 08:37:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:37:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2018-07-25 08:37:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:37:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:37:43,562 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 08:37:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:43,562 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:37:43,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:37:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:37:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:37:43,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:43,563 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 08:37:43,563 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash 382681383, now seen corresponding path program 78 times [2018-07-25 08:37:43,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:43,730 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 08:37:43,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:43,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:37:43,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:37:43,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:37:43,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:37:43,732 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 82 states. [2018-07-25 08:37:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:43,989 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-25 08:37:43,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:37:43,990 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 160 [2018-07-25 08:37:43,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:43,991 INFO L225 Difference]: With dead ends: 166 [2018-07-25 08:37:43,991 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:37:43,992 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9720, Invalid=16040, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:37:43,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:37:43,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2018-07-25 08:37:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:37:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:37:43,999 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 08:37:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:43,999 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:37:43,999 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:37:43,999 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:37:44,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:37:44,000 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:44,000 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 08:37:44,000 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1610431695, now seen corresponding path program 79 times [2018-07-25 08:37:44,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:44,170 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 08:37:44,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:44,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:37:44,171 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:37:44,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:37:44,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:37:44,172 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 83 states. [2018-07-25 08:37:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:44,473 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-25 08:37:44,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:37:44,473 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 162 [2018-07-25 08:37:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:44,474 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:37:44,474 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:37:44,476 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 08:37:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:37:44,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2018-07-25 08:37:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:37:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:37:44,482 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 08:37:44,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:44,483 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:37:44,483 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:37:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:37:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:37:44,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:44,483 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 08:37:44,484 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1436685637, now seen corresponding path program 80 times [2018-07-25 08:37:44,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:44,836 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 08:37:44,836 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:44,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:37:44,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:37:44,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:37:44,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:37:44,838 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 84 states. [2018-07-25 08:37:45,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:45,151 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-25 08:37:45,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:37:45,151 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 164 [2018-07-25 08:37:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:45,152 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:37:45,152 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:37:45,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10209, Invalid=16851, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:37:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:37:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2018-07-25 08:37:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:37:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:37:45,163 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 08:37:45,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:45,163 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:37:45,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:37:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:37:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:37:45,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:45,165 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 08:37:45,165 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:45,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1970448443, now seen corresponding path program 81 times [2018-07-25 08:37:45,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:45,359 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 08:37:45,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:45,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:37:45,360 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:37:45,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:37:45,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:37:45,361 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 85 states. [2018-07-25 08:37:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:45,674 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-25 08:37:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:37:45,674 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 166 [2018-07-25 08:37:45,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:45,675 INFO L225 Difference]: With dead ends: 172 [2018-07-25 08:37:45,675 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:37:45,677 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 08:37:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:37:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2018-07-25 08:37:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:37:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:37:45,685 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 08:37:45,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:45,685 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:37:45,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:37:45,686 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:37:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:37:45,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:45,687 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 08:37:45,687 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:45,687 INFO L82 PathProgramCache]: Analyzing trace with hash 479570511, now seen corresponding path program 82 times [2018-07-25 08:37:45,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:45,919 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 08:37:45,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:45,920 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:37:45,920 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:37:45,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:37:45,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:37:45,921 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 86 states. [2018-07-25 08:37:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:46,223 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-25 08:37:46,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:37:46,223 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 168 [2018-07-25 08:37:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:46,224 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:37:46,224 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:37:46,225 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 08:37:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:37:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2018-07-25 08:37:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:37:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:37:46,234 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 08:37:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:46,234 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:37:46,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:37:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:37:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:37:46,235 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:46,235 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 08:37:46,236 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:46,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1305707097, now seen corresponding path program 83 times [2018-07-25 08:37:46,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:46,417 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 08:37:46,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:46,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:37:46,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:37:46,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:37:46,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:37:46,419 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 87 states. [2018-07-25 08:37:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:46,722 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-25 08:37:46,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:37:46,722 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 170 [2018-07-25 08:37:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:46,723 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:37:46,723 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:37:46,725 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 08:37:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:37:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2018-07-25 08:37:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:37:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:37:46,733 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 08:37:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:46,733 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:37:46,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:37:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:37:46,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:37:46,734 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:46,735 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 08:37:46,735 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:46,735 INFO L82 PathProgramCache]: Analyzing trace with hash 654016483, now seen corresponding path program 84 times [2018-07-25 08:37:46,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:46,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:46,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:37:46,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:37:46,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:37:46,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:37:46,935 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 88 states. [2018-07-25 08:37:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:47,268 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-25 08:37:47,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:37:47,268 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 172 [2018-07-25 08:37:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:47,269 INFO L225 Difference]: With dead ends: 178 [2018-07-25 08:37:47,269 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:37:47,271 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11223, Invalid=18533, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:37:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:37:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2018-07-25 08:37:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:37:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:37:47,281 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 08:37:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:47,281 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:37:47,281 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:37:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:37:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:37:47,282 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:47,282 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 08:37:47,282 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:47,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1444561645, now seen corresponding path program 85 times [2018-07-25 08:37:47,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:47,526 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 08:37:47,526 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:47,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:37:47,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:37:47,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:37:47,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:37:47,528 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 89 states. [2018-07-25 08:37:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:47,982 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-25 08:37:47,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:37:47,983 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 174 [2018-07-25 08:37:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:47,984 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:37:47,984 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:37:47,985 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:37:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:37:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2018-07-25 08:37:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:37:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:37:47,994 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 08:37:47,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:47,994 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:37:47,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:37:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:37:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:37:47,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:47,995 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 08:37:47,995 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:47,996 INFO L82 PathProgramCache]: Analyzing trace with hash 949250935, now seen corresponding path program 86 times [2018-07-25 08:37:47,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:48,303 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 08:37:48,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:48,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:37:48,304 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:37:48,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:37:48,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:37:48,305 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 90 states. [2018-07-25 08:37:48,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:48,715 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-25 08:37:48,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:37:48,715 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 176 [2018-07-25 08:37:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:48,716 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:37:48,716 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:37:48,717 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3827 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11748, Invalid=19404, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:37:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:37:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2018-07-25 08:37:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:37:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:37:48,723 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 08:37:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:48,723 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:37:48,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:37:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:37:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:37:48,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:48,725 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 08:37:48,725 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1697028481, now seen corresponding path program 87 times [2018-07-25 08:37:48,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:49,046 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 08:37:49,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:49,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:37:49,047 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:37:49,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:37:49,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:37:49,048 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 91 states. [2018-07-25 08:37:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:49,406 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-25 08:37:49,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:37:49,406 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 178 [2018-07-25 08:37:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:49,407 INFO L225 Difference]: With dead ends: 184 [2018-07-25 08:37:49,407 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:37:49,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:37:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:37:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2018-07-25 08:37:49,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:37:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:37:49,417 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 08:37:49,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:49,418 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:37:49,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:37:49,418 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:37:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:37:49,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:49,419 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 08:37:49,419 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:49,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1243255541, now seen corresponding path program 88 times [2018-07-25 08:37:49,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:49,778 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 08:37:49,778 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:49,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:37:49,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:37:49,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:37:49,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:37:49,781 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 92 states. [2018-07-25 08:37:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:50,263 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-25 08:37:50,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:37:50,264 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 180 [2018-07-25 08:37:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:50,264 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:37:50,265 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:37:50,267 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4004 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12285, Invalid=20295, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:37:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:37:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2018-07-25 08:37:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:37:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:37:50,272 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 08:37:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:50,273 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:37:50,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:37:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:37:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:37:50,273 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:50,274 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 08:37:50,274 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:50,274 INFO L82 PathProgramCache]: Analyzing trace with hash -767719915, now seen corresponding path program 89 times [2018-07-25 08:37:50,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:50,482 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 08:37:50,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:50,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:37:50,482 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:37:50,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:37:50,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:37:50,483 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 93 states. [2018-07-25 08:37:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:50,855 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-25 08:37:50,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:37:50,855 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 182 [2018-07-25 08:37:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:50,856 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:37:50,856 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:37:50,858 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 08:37:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:37:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2018-07-25 08:37:50,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:37:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:37:50,867 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 08:37:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:50,867 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:37:50,867 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:37:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:37:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:37:50,868 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:50,868 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 08:37:50,868 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:50,869 INFO L82 PathProgramCache]: Analyzing trace with hash 955483295, now seen corresponding path program 90 times [2018-07-25 08:37:50,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:51,104 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 08:37:51,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:51,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:37:51,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:37:51,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:37:51,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:37:51,106 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 94 states. [2018-07-25 08:37:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:51,500 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-25 08:37:51,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:37:51,500 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 184 [2018-07-25 08:37:51,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:51,501 INFO L225 Difference]: With dead ends: 190 [2018-07-25 08:37:51,501 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:37:51,502 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 08:37:51,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:37:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2018-07-25 08:37:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:37:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:37:51,510 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 08:37:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:51,510 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:37:51,510 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:37:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:37:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:37:51,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:51,512 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 08:37:51,512 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:51,512 INFO L82 PathProgramCache]: Analyzing trace with hash -903608151, now seen corresponding path program 91 times [2018-07-25 08:37:51,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:51,805 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 08:37:51,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:51,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:37:51,806 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:37:51,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:37:51,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:37:51,807 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 95 states. [2018-07-25 08:37:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:52,335 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-25 08:37:52,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:37:52,335 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 186 [2018-07-25 08:37:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:52,336 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:37:52,336 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:37:52,338 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 08:37:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:37:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2018-07-25 08:37:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:37:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:37:52,345 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 08:37:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:52,346 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:37:52,346 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:37:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:37:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:37:52,347 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:52,347 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 08:37:52,347 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:52,347 INFO L82 PathProgramCache]: Analyzing trace with hash -784092621, now seen corresponding path program 92 times [2018-07-25 08:37:52,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:52,583 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 08:37:52,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:52,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:37:52,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:37:52,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:37:52,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:37:52,585 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 96 states. [2018-07-25 08:37:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:52,982 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-25 08:37:52,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:37:52,982 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 188 [2018-07-25 08:37:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:52,983 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:37:52,983 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:37:52,985 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 08:37:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:37:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2018-07-25 08:37:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:37:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:37:52,993 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 08:37:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:52,994 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:37:52,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:37:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:37:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:37:52,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:52,995 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 08:37:52,995 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:52,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1893785283, now seen corresponding path program 93 times [2018-07-25 08:37:52,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:53,223 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 08:37:53,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:53,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:37:53,224 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:37:53,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:37:53,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:37:53,225 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 97 states. [2018-07-25 08:37:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:53,665 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-25 08:37:53,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:37:53,665 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 190 [2018-07-25 08:37:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:53,666 INFO L225 Difference]: With dead ends: 196 [2018-07-25 08:37:53,666 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:37:53,667 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4464 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13680, Invalid=22610, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:37:53,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:37:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2018-07-25 08:37:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:37:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:37:53,672 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 08:37:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:53,673 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:37:53,673 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:37:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:37:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:37:53,673 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:53,673 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 08:37:53,674 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1138423239, now seen corresponding path program 94 times [2018-07-25 08:37:53,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:53,902 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 08:37:53,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:53,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:37:53,903 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:37:53,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:37:53,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:37:53,904 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 98 states. [2018-07-25 08:37:54,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:54,440 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-25 08:37:54,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:37:54,440 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 192 [2018-07-25 08:37:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:54,441 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:37:54,441 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:37:54,443 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4559 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13968, Invalid=23088, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:37:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:37:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2018-07-25 08:37:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:37:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:37:54,452 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 08:37:54,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:54,452 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:37:54,452 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:37:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:37:54,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:37:54,454 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:54,454 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 08:37:54,454 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:54,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1191981103, now seen corresponding path program 95 times [2018-07-25 08:37:54,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:54,831 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 08:37:54,831 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:54,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:37:54,832 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:37:54,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:37:54,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:37:54,833 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 99 states. [2018-07-25 08:37:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:55,206 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-25 08:37:55,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:37:55,207 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 194 [2018-07-25 08:37:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:55,207 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:37:55,208 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:37:55,209 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:37:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:37:55,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2018-07-25 08:37:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:37:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:37:55,216 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 08:37:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:55,217 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:37:55,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:37:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:37:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:37:55,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:55,218 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 08:37:55,218 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:55,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1262374747, now seen corresponding path program 96 times [2018-07-25 08:37:55,218 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:55,444 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 08:37:55,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:55,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:37:55,445 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:37:55,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:37:55,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:37:55,446 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 100 states. [2018-07-25 08:37:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:55,833 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-25 08:37:55,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:37:55,833 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 196 [2018-07-25 08:37:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:55,834 INFO L225 Difference]: With dead ends: 202 [2018-07-25 08:37:55,834 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:37:55,836 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 08:37:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:37:55,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2018-07-25 08:37:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:37:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:37:55,841 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 08:37:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:55,841 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:37:55,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:37:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:37:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:37:55,842 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:55,842 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 08:37:55,842 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:55,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1961301093, now seen corresponding path program 97 times [2018-07-25 08:37:55,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:56,081 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 08:37:56,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:56,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:37:56,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:37:56,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:37:56,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:37:56,083 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 101 states. [2018-07-25 08:37:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:56,525 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-25 08:37:56,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:37:56,525 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 198 [2018-07-25 08:37:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:56,526 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:37:56,526 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:37:56,527 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 08:37:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:37:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2018-07-25 08:37:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:37:56,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:37:56,532 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 08:37:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:56,533 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:37:56,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:37:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:37:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:37:56,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:56,534 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 08:37:56,534 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash -680345873, now seen corresponding path program 98 times [2018-07-25 08:37:56,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:56,780 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 08:37:56,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:56,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:37:56,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:37:56,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:37:56,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:37:56,782 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 102 states. [2018-07-25 08:37:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:57,235 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-25 08:37:57,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:37:57,235 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 200 [2018-07-25 08:37:57,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:57,236 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:37:57,236 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:37:57,239 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 08:37:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:37:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2018-07-25 08:37:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:37:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:37:57,248 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 08:37:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:57,248 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:37:57,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:37:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:37:57,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:37:57,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:57,249 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 08:37:57,250 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:57,250 INFO L82 PathProgramCache]: Analyzing trace with hash -977408263, now seen corresponding path program 99 times [2018-07-25 08:37:57,250 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:57,555 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 08:37:57,555 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:57,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:37:57,555 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:37:57,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:37:57,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:37:57,556 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 103 states. [2018-07-25 08:37:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:57,938 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-25 08:37:57,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:37:57,938 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 202 [2018-07-25 08:37:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:57,939 INFO L225 Difference]: With dead ends: 208 [2018-07-25 08:37:57,939 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:37:57,941 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:37:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:37:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2018-07-25 08:37:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:37:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:37:57,946 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 08:37:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:57,946 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:37:57,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:37:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:37:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:37:57,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:57,947 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 08:37:57,948 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:57,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1308443779, now seen corresponding path program 100 times [2018-07-25 08:37:57,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:58,340 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 08:37:58,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:58,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:37:58,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:37:58,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:37:58,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:37:58,343 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 104 states. [2018-07-25 08:37:58,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:58,896 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-25 08:37:58,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:37:58,896 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 204 [2018-07-25 08:37:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:58,897 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:37:58,898 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:37:58,900 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15759, Invalid=26061, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:37:58,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:37:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2018-07-25 08:37:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:37:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:37:58,908 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 08:37:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:58,908 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:37:58,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:37:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:37:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:37:58,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:58,910 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 08:37:58,910 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:58,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1010999411, now seen corresponding path program 101 times [2018-07-25 08:37:58,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:59,165 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 08:37:59,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:59,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:37:59,166 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:37:59,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:37:59,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:37:59,167 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 105 states. [2018-07-25 08:37:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:59,622 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-25 08:37:59,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:37:59,622 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 206 [2018-07-25 08:37:59,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:59,623 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:37:59,623 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:37:59,625 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 08:37:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:37:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2018-07-25 08:37:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:37:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:37:59,632 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 08:37:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:59,632 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:37:59,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:37:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:37:59,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:37:59,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:59,633 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 08:37:59,633 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:59,633 INFO L82 PathProgramCache]: Analyzing trace with hash -907878377, now seen corresponding path program 102 times [2018-07-25 08:37:59,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:59,895 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 08:37:59,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:59,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:37:59,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:37:59,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:37:59,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:37:59,898 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 106 states. [2018-07-25 08:38:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:00,397 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-25 08:38:00,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:38:00,397 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 208 [2018-07-25 08:38:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:00,398 INFO L225 Difference]: With dead ends: 214 [2018-07-25 08:38:00,398 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:38:00,400 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 08:38:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:38:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2018-07-25 08:38:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:38:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:38:00,408 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-25 08:38:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:00,409 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:38:00,409 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:38:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:38:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:38:00,410 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:00,410 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-25 08:38:00,410 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:00,410 INFO L82 PathProgramCache]: Analyzing trace with hash -592812511, now seen corresponding path program 103 times [2018-07-25 08:38:00,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:00,931 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 08:38:00,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:00,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:38:00,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:38:00,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:38:00,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:38:00,934 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 107 states. [2018-07-25 08:38:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:01,425 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-25 08:38:01,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:38:01,425 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 210 [2018-07-25 08:38:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:01,426 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:38:01,426 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:38:01,428 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 08:38:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:38:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2018-07-25 08:38:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:38:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:38:01,437 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-25 08:38:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:01,437 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:38:01,437 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:38:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:38:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:38:01,438 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:01,438 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-25 08:38:01,439 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:01,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1537773995, now seen corresponding path program 104 times [2018-07-25 08:38:01,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:01,717 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 08:38:01,717 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:01,717 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:38:01,717 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:38:01,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:38:01,719 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:38:01,719 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 108 states. [2018-07-25 08:38:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:02,172 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-25 08:38:02,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:38:02,173 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 212 [2018-07-25 08:38:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:02,173 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:38:02,174 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:38:02,177 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17013, Invalid=28143, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:38:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:38:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2018-07-25 08:38:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:38:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:38:02,184 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-25 08:38:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:02,185 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:38:02,185 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:38:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:38:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:38:02,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:02,186 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-25 08:38:02,186 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:02,186 INFO L82 PathProgramCache]: Analyzing trace with hash 332006069, now seen corresponding path program 105 times [2018-07-25 08:38:02,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:02,509 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 08:38:02,509 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:02,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:38:02,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:38:02,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:38:02,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:38:02,511 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 109 states. [2018-07-25 08:38:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:03,008 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-25 08:38:03,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:38:03,008 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 214 [2018-07-25 08:38:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:03,009 INFO L225 Difference]: With dead ends: 220 [2018-07-25 08:38:03,009 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:38:03,011 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17334, Invalid=28676, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:38:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:38:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2018-07-25 08:38:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:38:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:38:03,016 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-25 08:38:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:03,016 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:38:03,016 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:38:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:38:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:38:03,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:03,017 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-25 08:38:03,017 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:03,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1230199103, now seen corresponding path program 106 times [2018-07-25 08:38:03,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:03,304 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 08:38:03,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:03,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:38:03,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:38:03,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:38:03,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:38:03,306 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 110 states. [2018-07-25 08:38:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:03,838 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-25 08:38:03,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:38:03,838 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 216 [2018-07-25 08:38:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:03,838 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:38:03,838 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:38:03,840 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 08:38:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:38:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2018-07-25 08:38:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:38:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:38:03,845 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-25 08:38:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:03,846 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:38:03,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:38:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:38:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:38:03,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:03,846 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-25 08:38:03,847 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:03,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1105278281, now seen corresponding path program 107 times [2018-07-25 08:38:03,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:04,135 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 08:38:04,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:04,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:38:04,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:38:04,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:38:04,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:38:04,138 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 111 states. [2018-07-25 08:38:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:04,633 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-25 08:38:04,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:38:04,634 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 218 [2018-07-25 08:38:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:04,634 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:38:04,634 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:38:04,637 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 08:38:04,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:38:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2018-07-25 08:38:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:38:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:38:04,645 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-25 08:38:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:04,645 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:38:04,645 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:38:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:38:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:38:04,646 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:04,646 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-25 08:38:04,646 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:04,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1315452627, now seen corresponding path program 108 times [2018-07-25 08:38:04,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:04,943 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 08:38:04,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:04,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:38:04,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:38:04,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:38:04,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:38:04,945 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 112 states. [2018-07-25 08:38:05,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:05,503 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-25 08:38:05,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:38:05,503 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 220 [2018-07-25 08:38:05,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:05,504 INFO L225 Difference]: With dead ends: 226 [2018-07-25 08:38:05,504 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:38:05,507 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 08:38:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:38:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2018-07-25 08:38:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:38:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:38:05,515 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-25 08:38:05,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:05,515 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:38:05,516 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:38:05,516 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:38:05,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:38:05,517 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:05,517 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-25 08:38:05,517 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:05,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1429536221, now seen corresponding path program 109 times [2018-07-25 08:38:05,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:05,893 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 08:38:05,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:05,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:38:05,894 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:38:05,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:38:05,895 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:38:05,895 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 113 states. [2018-07-25 08:38:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:06,522 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-25 08:38:06,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:38:06,522 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 222 [2018-07-25 08:38:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:06,523 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:38:06,523 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:38:06,527 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18648, Invalid=30858, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:38:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:38:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2018-07-25 08:38:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:38:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:38:06,536 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-25 08:38:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:06,536 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:38:06,536 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:38:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:38:06,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:38:06,537 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:06,537 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-25 08:38:06,538 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:06,538 INFO L82 PathProgramCache]: Analyzing trace with hash -605279641, now seen corresponding path program 110 times [2018-07-25 08:38:06,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:06,906 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 08:38:06,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:06,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:38:06,906 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:38:06,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:38:06,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:38:06,908 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 114 states. [2018-07-25 08:38:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:07,585 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-25 08:38:07,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:38:07,585 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 224 [2018-07-25 08:38:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:07,586 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:38:07,586 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:38:07,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18984, Invalid=31416, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:38:07,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:38:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2018-07-25 08:38:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:38:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:38:07,595 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-25 08:38:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:07,595 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:38:07,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:38:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:38:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:38:07,596 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:07,596 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-25 08:38:07,596 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:07,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1853203343, now seen corresponding path program 111 times [2018-07-25 08:38:07,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:07,980 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 08:38:07,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:07,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:38:07,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:38:07,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:38:07,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:38:07,981 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 115 states. [2018-07-25 08:38:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:08,537 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-25 08:38:08,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:38:08,537 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 226 [2018-07-25 08:38:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:08,537 INFO L225 Difference]: With dead ends: 232 [2018-07-25 08:38:08,538 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:38:08,540 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6327 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:38:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:38:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2018-07-25 08:38:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:38:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:38:08,546 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-25 08:38:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:08,546 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:38:08,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:38:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:38:08,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:38:08,547 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:08,547 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-25 08:38:08,547 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:08,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1482961915, now seen corresponding path program 112 times [2018-07-25 08:38:08,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:08,898 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 08:38:08,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:08,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:38:08,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:38:08,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:38:08,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6557, Invalid=6783, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:38:08,900 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 116 states. [2018-07-25 08:38:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:09,542 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-25 08:38:09,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:38:09,543 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 228 [2018-07-25 08:38:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:09,543 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:38:09,543 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:38:09,546 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19665, Invalid=32547, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:38:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:38:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2018-07-25 08:38:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:38:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:38:09,554 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-25 08:38:09,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:09,555 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:38:09,555 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:38:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:38:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:38:09,556 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:09,556 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-25 08:38:09,556 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:09,556 INFO L82 PathProgramCache]: Analyzing trace with hash -802795259, now seen corresponding path program 113 times [2018-07-25 08:38:09,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:09,922 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 08:38:09,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:09,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:38:09,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:38:09,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:38:09,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:38:09,924 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 117 states. [2018-07-25 08:38:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:10,597 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-25 08:38:10,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:38:10,597 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 230 [2018-07-25 08:38:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:10,598 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:38:10,598 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:38:10,601 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6554 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20010, Invalid=33120, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:38:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:38:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2018-07-25 08:38:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:38:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:38:10,607 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-25 08:38:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:10,608 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:38:10,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:38:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:38:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:38:10,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:10,609 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-25 08:38:10,609 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:10,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1607816079, now seen corresponding path program 114 times [2018-07-25 08:38:10,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:10,985 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 08:38:10,985 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:10,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:38:10,986 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:38:10,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:38:10,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:38:10,987 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 118 states. [2018-07-25 08:38:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:11,706 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-25 08:38:11,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:38:11,706 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 232 [2018-07-25 08:38:11,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:11,707 INFO L225 Difference]: With dead ends: 238 [2018-07-25 08:38:11,707 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:38:11,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20358, Invalid=33698, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:38:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:38:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2018-07-25 08:38:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:38:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:38:11,714 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-25 08:38:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:11,714 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:38:11,714 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:38:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:38:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:38:11,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:11,715 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-25 08:38:11,715 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:11,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1077027943, now seen corresponding path program 115 times [2018-07-25 08:38:11,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:12,076 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 08:38:12,076 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:12,076 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:38:12,077 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:38:12,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:38:12,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:38:12,078 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 119 states. [2018-07-25 08:38:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:12,733 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-25 08:38:12,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:38:12,733 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 234 [2018-07-25 08:38:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:12,733 INFO L225 Difference]: With dead ends: 240 [2018-07-25 08:38:12,733 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:38:12,737 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 08:38:12,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:38:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2018-07-25 08:38:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:38:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:38:12,743 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-25 08:38:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:12,743 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:38:12,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:38:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:38:12,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:38:12,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:12,744 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-25 08:38:12,745 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:12,745 INFO L82 PathProgramCache]: Analyzing trace with hash 63211811, now seen corresponding path program 116 times [2018-07-25 08:38:12,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:13,136 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 08:38:13,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:13,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:38:13,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:38:13,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:38:13,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7023, Invalid=7257, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:38:13,139 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 120 states. [2018-07-25 08:38:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:13,873 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-07-25 08:38:13,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:38:13,874 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 236 [2018-07-25 08:38:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:13,874 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:38:13,874 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 08:38:13,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6902 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21063, Invalid=34869, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:38:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 08:38:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2018-07-25 08:38:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:38:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:38:13,884 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-25 08:38:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:13,884 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:38:13,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:38:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:38:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:38:13,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:13,886 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-25 08:38:13,886 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:13,886 INFO L82 PathProgramCache]: Analyzing trace with hash 616954925, now seen corresponding path program 117 times [2018-07-25 08:38:13,886 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:14,290 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 08:38:14,290 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:14,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:38:14,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:38:14,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:38:14,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7142, Invalid=7378, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:38:14,292 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 121 states. [2018-07-25 08:38:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:15,071 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-07-25 08:38:15,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:38:15,071 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 238 [2018-07-25 08:38:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:15,072 INFO L225 Difference]: With dead ends: 244 [2018-07-25 08:38:15,072 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:38:15,075 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7020 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21420, Invalid=35462, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:38:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:38:15,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2018-07-25 08:38:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:38:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:38:15,084 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-25 08:38:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:15,084 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:38:15,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:38:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:38:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:38:15,085 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:15,085 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-25 08:38:15,085 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:15,086 INFO L82 PathProgramCache]: Analyzing trace with hash 188142775, now seen corresponding path program 118 times [2018-07-25 08:38:15,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:15,498 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 08:38:15,498 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:15,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:38:15,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:38:15,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:38:15,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7262, Invalid=7500, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:38:15,500 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 122 states. [2018-07-25 08:38:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:16,209 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-07-25 08:38:16,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:38:16,209 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 240 [2018-07-25 08:38:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:16,210 INFO L225 Difference]: With dead ends: 246 [2018-07-25 08:38:16,210 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:38:16,213 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21780, Invalid=36060, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:38:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:38:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2018-07-25 08:38:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:38:16,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:38:16,220 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-25 08:38:16,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:16,220 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:38:16,220 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:38:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:38:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:38:16,221 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:16,221 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-25 08:38:16,221 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:16,221 INFO L82 PathProgramCache]: Analyzing trace with hash 416527041, now seen corresponding path program 119 times [2018-07-25 08:38:16,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:16,629 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 08:38:16,629 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:16,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:38:16,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:38:16,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:38:16,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:38:16,631 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 123 states. [2018-07-25 08:38:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:17,363 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-07-25 08:38:17,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:38:17,364 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 242 [2018-07-25 08:38:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:17,364 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:38:17,364 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 08:38:17,368 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 08:38:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 08:38:17,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2018-07-25 08:38:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:38:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:38:17,374 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-25 08:38:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:17,374 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:38:17,374 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:38:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:38:17,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:38:17,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:17,375 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-25 08:38:17,375 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:17,376 INFO L82 PathProgramCache]: Analyzing trace with hash 850474571, now seen corresponding path program 120 times [2018-07-25 08:38:17,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:17,745 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 08:38:17,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:17,746 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:38:17,746 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:38:17,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:38:17,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7505, Invalid=7747, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:38:17,748 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 124 states. [2018-07-25 08:38:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:18,448 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-07-25 08:38:18,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:38:18,449 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 244 [2018-07-25 08:38:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:18,449 INFO L225 Difference]: With dead ends: 250 [2018-07-25 08:38:18,449 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:38:18,452 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7380 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22509, Invalid=37271, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:38:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:38:18,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2018-07-25 08:38:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:38:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:38:18,458 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-25 08:38:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:18,458 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:38:18,458 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:38:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:38:18,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:38:18,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:18,459 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-25 08:38:18,459 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:18,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1262223189, now seen corresponding path program 121 times [2018-07-25 08:38:18,459 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:18,877 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 08:38:18,877 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:18,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:38:18,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:38:18,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:38:18,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7628, Invalid=7872, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:38:18,879 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 125 states. [2018-07-25 08:38:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:19,499 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-07-25 08:38:19,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:38:19,499 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 246 [2018-07-25 08:38:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:19,500 INFO L225 Difference]: With dead ends: 252 [2018-07-25 08:38:19,500 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:38:19,503 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7502 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22878, Invalid=37884, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:38:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:38:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2018-07-25 08:38:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:38:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:38:19,512 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-25 08:38:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:19,512 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:38:19,512 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:38:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:38:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:38:19,513 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:19,513 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-25 08:38:19,514 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:19,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1815653855, now seen corresponding path program 122 times [2018-07-25 08:38:19,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:19,977 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 08:38:19,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:19,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:38:19,978 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:38:19,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:38:19,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7752, Invalid=7998, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:38:19,979 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 126 states. [2018-07-25 08:38:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:20,649 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-07-25 08:38:20,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:38:20,649 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 248 [2018-07-25 08:38:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:20,650 INFO L225 Difference]: With dead ends: 254 [2018-07-25 08:38:20,650 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 08:38:20,653 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7625 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23250, Invalid=38502, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 08:38:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 08:38:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2018-07-25 08:38:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:38:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 08:38:20,659 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-25 08:38:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:20,659 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 08:38:20,659 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:38:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 08:38:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:38:20,660 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:20,660 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-25 08:38:20,660 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:20,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1086579177, now seen corresponding path program 123 times [2018-07-25 08:38:20,661 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:21,045 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 08:38:21,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:21,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:38:21,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:38:21,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:38:21,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:38:21,047 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 127 states. [2018-07-25 08:38:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:21,814 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-07-25 08:38:21,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:38:21,815 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 250 [2018-07-25 08:38:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:21,815 INFO L225 Difference]: With dead ends: 256 [2018-07-25 08:38:21,815 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 08:38:21,818 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 08:38:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 08:38:21,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2018-07-25 08:38:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:38:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 08:38:21,824 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-25 08:38:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:21,824 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 08:38:21,824 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:38:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 08:38:21,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:38:21,825 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:21,825 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-25 08:38:21,825 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash 525482867, now seen corresponding path program 124 times [2018-07-25 08:38:21,825 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:22,256 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 08:38:22,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:22,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:38:22,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:38:22,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:38:22,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8003, Invalid=8253, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:38:22,258 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 128 states. [2018-07-25 08:38:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:22,884 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-07-25 08:38:22,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:38:22,885 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 252 [2018-07-25 08:38:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:22,885 INFO L225 Difference]: With dead ends: 258 [2018-07-25 08:38:22,885 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 08:38:22,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24003, Invalid=39753, Unknown=0, NotChecked=0, Total=63756 [2018-07-25 08:38:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 08:38:22,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2018-07-25 08:38:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:38:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 08:38:22,893 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-25 08:38:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:22,894 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 08:38:22,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:38:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 08:38:22,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:38:22,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:22,895 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-25 08:38:22,895 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:22,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1817159043, now seen corresponding path program 125 times [2018-07-25 08:38:22,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:23,277 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 08:38:23,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:23,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:38:23,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:38:23,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:38:23,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8130, Invalid=8382, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:38:23,279 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 129 states. [2018-07-25 08:38:23,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:23,990 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-07-25 08:38:23,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:38:23,991 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 254 [2018-07-25 08:38:23,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:23,991 INFO L225 Difference]: With dead ends: 260 [2018-07-25 08:38:23,991 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 08:38:23,994 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24384, Invalid=40386, Unknown=0, NotChecked=0, Total=64770 [2018-07-25 08:38:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 08:38:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2018-07-25 08:38:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:38:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 08:38:24,000 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-25 08:38:24,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:24,000 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 08:38:24,000 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:38:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 08:38:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:38:24,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:24,002 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-25 08:38:24,002 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1761795847, now seen corresponding path program 126 times [2018-07-25 08:38:24,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:24,423 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 08:38:24,423 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:24,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:38:24,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:38:24,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:38:24,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8258, Invalid=8512, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:38:24,425 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 130 states. [2018-07-25 08:38:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:25,206 INFO L93 Difference]: Finished difference Result 262 states and 262 transitions. [2018-07-25 08:38:25,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:38:25,206 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 256 [2018-07-25 08:38:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:25,207 INFO L225 Difference]: With dead ends: 262 [2018-07-25 08:38:25,207 INFO L226 Difference]: Without dead ends: 260 [2018-07-25 08:38:25,210 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8127 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24768, Invalid=41024, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 08:38:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-07-25 08:38:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2018-07-25 08:38:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:38:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-25 08:38:25,215 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-25 08:38:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:25,216 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-25 08:38:25,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:38:25,216 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-25 08:38:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:38:25,217 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:25,217 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-25 08:38:25,217 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:25,217 INFO L82 PathProgramCache]: Analyzing trace with hash 868641041, now seen corresponding path program 127 times [2018-07-25 08:38:25,218 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:25,663 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 08:38:25,663 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:25,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:38:25,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:38:25,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:38:25,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:38:25,666 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 131 states. [2018-07-25 08:38:26,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:26,364 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2018-07-25 08:38:26,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:38:26,364 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 258 [2018-07-25 08:38:26,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:26,365 INFO L225 Difference]: With dead ends: 264 [2018-07-25 08:38:26,365 INFO L226 Difference]: Without dead ends: 262 [2018-07-25 08:38:26,368 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 08:38:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-07-25 08:38:26,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2018-07-25 08:38:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:38:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-25 08:38:26,375 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-25 08:38:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:26,376 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-25 08:38:26,376 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:38:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-25 08:38:26,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:38:26,377 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:26,377 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-25 08:38:26,377 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:26,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1540331675, now seen corresponding path program 128 times [2018-07-25 08:38:26,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:26,798 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 08:38:26,798 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:26,798 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:38:26,799 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:38:26,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:38:26,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8517, Invalid=8775, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:38:26,801 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 132 states. [2018-07-25 08:38:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:27,539 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2018-07-25 08:38:27,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:38:27,539 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 260 [2018-07-25 08:38:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:27,540 INFO L225 Difference]: With dead ends: 266 [2018-07-25 08:38:27,540 INFO L226 Difference]: Without dead ends: 264 [2018-07-25 08:38:27,543 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 08:38:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-07-25 08:38:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2018-07-25 08:38:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:38:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-25 08:38:27,549 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-25 08:38:27,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:27,550 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-25 08:38:27,550 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:38:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-25 08:38:27,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:38:27,551 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:27,551 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-25 08:38:27,551 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:27,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1505030747, now seen corresponding path program 129 times [2018-07-25 08:38:27,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:27,977 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 08:38:27,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:27,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:38:27,978 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:38:27,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:38:27,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8648, Invalid=8908, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:38:27,980 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 133 states. [2018-07-25 08:38:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:28,781 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2018-07-25 08:38:28,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:38:28,781 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 262 [2018-07-25 08:38:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:28,782 INFO L225 Difference]: With dead ends: 268 [2018-07-25 08:38:28,782 INFO L226 Difference]: Without dead ends: 266 [2018-07-25 08:38:28,784 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 08:38:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-07-25 08:38:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2018-07-25 08:38:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:38:28,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-25 08:38:28,789 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-25 08:38:28,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:28,790 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-25 08:38:28,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:38:28,790 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-25 08:38:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:38:28,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:28,790 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-25 08:38:28,791 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:28,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1069377583, now seen corresponding path program 130 times [2018-07-25 08:38:28,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:29,207 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 08:38:29,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:29,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:38:29,208 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:38:29,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:38:29,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:38:29,210 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 134 states. [2018-07-25 08:38:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:29,958 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2018-07-25 08:38:29,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:38:29,958 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 264 [2018-07-25 08:38:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:29,959 INFO L225 Difference]: With dead ends: 270 [2018-07-25 08:38:29,959 INFO L226 Difference]: Without dead ends: 268 [2018-07-25 08:38:29,962 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 08:38:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-07-25 08:38:29,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2018-07-25 08:38:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:38:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-25 08:38:29,968 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-25 08:38:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:29,968 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-25 08:38:29,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:38:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-25 08:38:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:38:29,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:29,969 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-25 08:38:29,969 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:29,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1174620217, now seen corresponding path program 131 times [2018-07-25 08:38:29,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:30,413 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 08:38:30,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:30,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:38:30,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:38:30,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:38:30,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:38:30,415 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 135 states. [2018-07-25 08:38:31,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:31,231 INFO L93 Difference]: Finished difference Result 272 states and 272 transitions. [2018-07-25 08:38:31,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:38:31,231 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 266 [2018-07-25 08:38:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:31,231 INFO L225 Difference]: With dead ends: 272 [2018-07-25 08:38:31,232 INFO L226 Difference]: Without dead ends: 270 [2018-07-25 08:38:31,234 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 08:38:31,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-07-25 08:38:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2018-07-25 08:38:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:38:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-25 08:38:31,241 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-25 08:38:31,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:31,241 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-25 08:38:31,241 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:38:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-25 08:38:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:38:31,242 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:31,242 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-25 08:38:31,242 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:31,242 INFO L82 PathProgramCache]: Analyzing trace with hash -766423613, now seen corresponding path program 132 times [2018-07-25 08:38:31,242 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:31,694 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 08:38:31,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:31,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:38:31,695 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:38:31,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:38:31,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9047, Invalid=9313, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:38:31,698 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 136 states. [2018-07-25 08:38:32,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:32,448 INFO L93 Difference]: Finished difference Result 274 states and 274 transitions. [2018-07-25 08:38:32,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:38:32,449 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 268 [2018-07-25 08:38:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:32,449 INFO L225 Difference]: With dead ends: 274 [2018-07-25 08:38:32,449 INFO L226 Difference]: Without dead ends: 272 [2018-07-25 08:38:32,452 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 08:38:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-07-25 08:38:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2018-07-25 08:38:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:38:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-25 08:38:32,458 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-25 08:38:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:32,459 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-25 08:38:32,459 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:38:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-25 08:38:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:38:32,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:32,459 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-25 08:38:32,460 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:32,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2093737779, now seen corresponding path program 133 times [2018-07-25 08:38:32,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:32,981 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 08:38:32,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:32,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:38:32,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:38:32,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:38:32,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9182, Invalid=9450, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:38:32,984 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 137 states. [2018-07-25 08:38:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:33,787 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2018-07-25 08:38:33,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:38:33,788 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 270 [2018-07-25 08:38:33,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:33,788 INFO L225 Difference]: With dead ends: 276 [2018-07-25 08:38:33,788 INFO L226 Difference]: Without dead ends: 274 [2018-07-25 08:38:33,791 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 08:38:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-07-25 08:38:33,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2018-07-25 08:38:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:38:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-25 08:38:33,798 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-25 08:38:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:33,798 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-25 08:38:33,798 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:38:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-25 08:38:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:38:33,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:33,799 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-25 08:38:33,799 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:33,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2037364393, now seen corresponding path program 134 times [2018-07-25 08:38:33,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:34,258 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 08:38:34,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:34,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:38:34,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:38:34,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:38:34,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9318, Invalid=9588, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:38:34,261 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 138 states. [2018-07-25 08:38:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:35,166 INFO L93 Difference]: Finished difference Result 278 states and 278 transitions. [2018-07-25 08:38:35,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:38:35,167 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 272 [2018-07-25 08:38:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:35,167 INFO L225 Difference]: With dead ends: 278 [2018-07-25 08:38:35,167 INFO L226 Difference]: Without dead ends: 276 [2018-07-25 08:38:35,173 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 08:38:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-07-25 08:38:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2018-07-25 08:38:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:38:35,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-25 08:38:35,183 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-25 08:38:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:35,184 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-25 08:38:35,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:38:35,184 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-25 08:38:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:38:35,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:35,185 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-25 08:38:35,185 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:35,185 INFO L82 PathProgramCache]: Analyzing trace with hash 597852001, now seen corresponding path program 135 times [2018-07-25 08:38:35,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:35,715 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 08:38:35,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:35,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:38:35,715 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:38:35,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:38:35,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:38:35,717 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 139 states. [2018-07-25 08:38:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:36,532 INFO L93 Difference]: Finished difference Result 280 states and 280 transitions. [2018-07-25 08:38:36,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:38:36,532 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 274 [2018-07-25 08:38:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:36,533 INFO L225 Difference]: With dead ends: 280 [2018-07-25 08:38:36,533 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 08:38:36,536 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 08:38:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 08:38:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2018-07-25 08:38:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:38:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-25 08:38:36,542 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-25 08:38:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:36,543 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-25 08:38:36,543 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:38:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-25 08:38:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:38:36,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:36,544 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-25 08:38:36,545 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:36,545 INFO L82 PathProgramCache]: Analyzing trace with hash -989898005, now seen corresponding path program 136 times [2018-07-25 08:38:36,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:37,003 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 08:38:37,003 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:37,003 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:38:37,003 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:38:37,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:38:37,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9593, Invalid=9867, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:38:37,005 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 140 states. [2018-07-25 08:38:37,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:37,865 INFO L93 Difference]: Finished difference Result 282 states and 282 transitions. [2018-07-25 08:38:37,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:38:37,865 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 276 [2018-07-25 08:38:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:37,866 INFO L225 Difference]: With dead ends: 282 [2018-07-25 08:38:37,866 INFO L226 Difference]: Without dead ends: 280 [2018-07-25 08:38:37,871 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 08:38:37,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-07-25 08:38:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2018-07-25 08:38:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:38:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-25 08:38:37,882 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-25 08:38:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:37,882 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-25 08:38:37,883 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:38:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-25 08:38:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:38:37,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:37,884 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-25 08:38:37,884 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:37,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2104263691, now seen corresponding path program 137 times [2018-07-25 08:38:37,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:38,484 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 08:38:38,484 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:38,484 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:38:38,484 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:38:38,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:38:38,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9732, Invalid=10008, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:38:38,487 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 141 states. [2018-07-25 08:38:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:39,301 INFO L93 Difference]: Finished difference Result 284 states and 284 transitions. [2018-07-25 08:38:39,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:38:39,301 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 278 [2018-07-25 08:38:39,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:39,302 INFO L225 Difference]: With dead ends: 284 [2018-07-25 08:38:39,302 INFO L226 Difference]: Without dead ends: 282 [2018-07-25 08:38:39,304 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 08:38:39,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-07-25 08:38:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2018-07-25 08:38:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:38:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-25 08:38:39,311 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-25 08:38:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:39,311 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-25 08:38:39,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:38:39,311 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-25 08:38:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:38:39,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:39,312 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-25 08:38:39,312 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:39,312 INFO L82 PathProgramCache]: Analyzing trace with hash 732136063, now seen corresponding path program 138 times [2018-07-25 08:38:39,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:39,789 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 08:38:39,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:39,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:38:39,790 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:38:39,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:38:39,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9872, Invalid=10150, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:38:39,792 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 142 states. [2018-07-25 08:38:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:40,669 INFO L93 Difference]: Finished difference Result 286 states and 286 transitions. [2018-07-25 08:38:40,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:38:40,669 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 280 [2018-07-25 08:38:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:40,670 INFO L225 Difference]: With dead ends: 286 [2018-07-25 08:38:40,670 INFO L226 Difference]: Without dead ends: 284 [2018-07-25 08:38:40,673 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 08:38:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-07-25 08:38:40,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 283. [2018-07-25 08:38:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:38:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-25 08:38:40,679 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-25 08:38:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:40,680 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-25 08:38:40,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:38:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-25 08:38:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:38:40,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:40,681 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-25 08:38:40,681 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:40,681 INFO L82 PathProgramCache]: Analyzing trace with hash -791933303, now seen corresponding path program 139 times [2018-07-25 08:38:40,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:41,166 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 08:38:41,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:41,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:38:41,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:38:41,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:38:41,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:38:41,169 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 143 states. [2018-07-25 08:38:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:42,097 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2018-07-25 08:38:42,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:38:42,097 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 282 [2018-07-25 08:38:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:42,097 INFO L225 Difference]: With dead ends: 288 [2018-07-25 08:38:42,097 INFO L226 Difference]: Without dead ends: 286 [2018-07-25 08:38:42,099 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9869 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2018-07-25 08:38:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-07-25 08:38:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2018-07-25 08:38:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:38:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-25 08:38:42,105 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-25 08:38:42,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:42,105 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-25 08:38:42,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:38:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-25 08:38:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:38:42,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:42,106 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-25 08:38:42,106 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:42,107 INFO L82 PathProgramCache]: Analyzing trace with hash -838746093, now seen corresponding path program 140 times [2018-07-25 08:38:42,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:42,579 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 08:38:42,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:42,580 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:38:42,580 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:38:42,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:38:42,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10155, Invalid=10437, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:38:42,582 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 144 states. [2018-07-25 08:38:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:43,466 INFO L93 Difference]: Finished difference Result 290 states and 290 transitions. [2018-07-25 08:38:43,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:38:43,466 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 284 [2018-07-25 08:38:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:43,467 INFO L225 Difference]: With dead ends: 290 [2018-07-25 08:38:43,467 INFO L226 Difference]: Without dead ends: 288 [2018-07-25 08:38:43,472 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 08:38:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-07-25 08:38:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2018-07-25 08:38:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:38:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-25 08:38:43,479 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-25 08:38:43,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:43,479 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-25 08:38:43,479 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:38:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-25 08:38:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:38:43,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:43,480 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-25 08:38:43,480 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:43,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1418802973, now seen corresponding path program 141 times [2018-07-25 08:38:43,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:43,974 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 08:38:43,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:43,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:38:43,975 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:38:43,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:38:43,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10298, Invalid=10582, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:38:43,977 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 145 states. [2018-07-25 08:38:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:44,908 INFO L93 Difference]: Finished difference Result 292 states and 292 transitions. [2018-07-25 08:38:44,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:38:44,908 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 286 [2018-07-25 08:38:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:44,909 INFO L225 Difference]: With dead ends: 292 [2018-07-25 08:38:44,909 INFO L226 Difference]: Without dead ends: 290 [2018-07-25 08:38:44,912 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10152 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30888, Invalid=51194, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 08:38:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-07-25 08:38:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2018-07-25 08:38:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:38:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-25 08:38:44,919 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-25 08:38:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:44,919 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-25 08:38:44,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:38:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-25 08:38:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:38:44,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:44,920 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-25 08:38:44,920 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1964970919, now seen corresponding path program 142 times [2018-07-25 08:38:44,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:45,468 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 08:38:45,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:45,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:38:45,469 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:38:45,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:38:45,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10442, Invalid=10728, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:38:45,471 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 146 states. [2018-07-25 08:38:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:46,368 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2018-07-25 08:38:46,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:38:46,368 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 288 [2018-07-25 08:38:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:46,369 INFO L225 Difference]: With dead ends: 294 [2018-07-25 08:38:46,369 INFO L226 Difference]: Without dead ends: 292 [2018-07-25 08:38:46,374 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 08:38:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-07-25 08:38:46,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2018-07-25 08:38:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:38:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-25 08:38:46,380 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-25 08:38:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:46,381 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-25 08:38:46,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:38:46,381 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-25 08:38:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:38:46,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:46,382 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-25 08:38:46,382 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:46,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1448610383, now seen corresponding path program 143 times [2018-07-25 08:38:46,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:46,886 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 08:38:46,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:46,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:38:46,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:38:46,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:38:46,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10587, Invalid=10875, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:38:46,889 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 147 states. [2018-07-25 08:38:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:47,878 INFO L93 Difference]: Finished difference Result 296 states and 296 transitions. [2018-07-25 08:38:47,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:38:47,878 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 290 [2018-07-25 08:38:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:47,879 INFO L225 Difference]: With dead ends: 296 [2018-07-25 08:38:47,879 INFO L226 Difference]: Without dead ends: 294 [2018-07-25 08:38:47,883 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 08:38:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-07-25 08:38:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2018-07-25 08:38:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:38:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-25 08:38:47,890 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-25 08:38:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:47,891 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-25 08:38:47,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:38:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-25 08:38:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:38:47,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:47,892 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-25 08:38:47,892 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:47,892 INFO L82 PathProgramCache]: Analyzing trace with hash -545227461, now seen corresponding path program 144 times [2018-07-25 08:38:47,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:48,527 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 08:38:48,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:48,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:38:48,528 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:38:48,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:38:48,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10733, Invalid=11023, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:38:48,529 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 148 states. [2018-07-25 08:38:49,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:49,424 INFO L93 Difference]: Finished difference Result 298 states and 298 transitions. [2018-07-25 08:38:49,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:38:49,424 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 292 [2018-07-25 08:38:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:49,425 INFO L225 Difference]: With dead ends: 298 [2018-07-25 08:38:49,425 INFO L226 Difference]: Without dead ends: 296 [2018-07-25 08:38:49,428 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 08:38:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-07-25 08:38:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2018-07-25 08:38:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:38:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-25 08:38:49,438 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-25 08:38:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:49,439 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-25 08:38:49,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:38:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-25 08:38:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:38:49,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:49,440 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-25 08:38:49,440 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:49,441 INFO L82 PathProgramCache]: Analyzing trace with hash 22366789, now seen corresponding path program 145 times [2018-07-25 08:38:49,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:49,959 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 08:38:49,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:49,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:38:49,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:38:49,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:38:49,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:38:49,962 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 149 states. [2018-07-25 08:38:50,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:50,942 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions. [2018-07-25 08:38:50,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:38:50,942 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 294 [2018-07-25 08:38:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:50,943 INFO L225 Difference]: With dead ends: 300 [2018-07-25 08:38:50,943 INFO L226 Difference]: Without dead ends: 298 [2018-07-25 08:38:50,949 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 08:38:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-07-25 08:38:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2018-07-25 08:38:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:38:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-25 08:38:50,961 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-25 08:38:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:50,961 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-25 08:38:50,961 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:38:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-25 08:38:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:38:50,962 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:50,963 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-25 08:38:50,963 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:50,963 INFO L82 PathProgramCache]: Analyzing trace with hash 19594447, now seen corresponding path program 146 times [2018-07-25 08:38:50,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:51,564 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 08:38:51,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:51,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:38:51,565 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:38:51,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:38:51,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11028, Invalid=11322, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:38:51,567 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 150 states. [2018-07-25 08:38:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:52,520 INFO L93 Difference]: Finished difference Result 302 states and 302 transitions. [2018-07-25 08:38:52,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:38:52,520 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 296 [2018-07-25 08:38:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:52,521 INFO L225 Difference]: With dead ends: 302 [2018-07-25 08:38:52,521 INFO L226 Difference]: Without dead ends: 300 [2018-07-25 08:38:52,524 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10877 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33078, Invalid=54834, Unknown=0, NotChecked=0, Total=87912 [2018-07-25 08:38:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-07-25 08:38:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2018-07-25 08:38:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:38:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-25 08:38:52,530 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-25 08:38:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:52,531 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-25 08:38:52,531 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:38:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-25 08:38:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:38:52,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:52,531 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-25 08:38:52,532 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1650341081, now seen corresponding path program 147 times [2018-07-25 08:38:52,532 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:53,060 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 08:38:53,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:53,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:38:53,061 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:38:53,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:38:53,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:38:53,063 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 151 states. [2018-07-25 08:38:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:54,084 INFO L93 Difference]: Finished difference Result 304 states and 304 transitions. [2018-07-25 08:38:54,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:38:54,084 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 298 [2018-07-25 08:38:54,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:54,085 INFO L225 Difference]: With dead ends: 304 [2018-07-25 08:38:54,085 INFO L226 Difference]: Without dead ends: 302 [2018-07-25 08:38:54,091 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33525, Invalid=55577, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 08:38:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-07-25 08:38:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 301. [2018-07-25 08:38:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:38:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-25 08:38:54,103 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-25 08:38:54,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:54,103 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-25 08:38:54,104 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:38:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-25 08:38:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:38:54,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:54,105 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-25 08:38:54,105 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:54,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1134793315, now seen corresponding path program 148 times [2018-07-25 08:38:54,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:54,782 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 08:38:54,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:54,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:38:54,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:38:54,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:38:54,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11327, Invalid=11625, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:38:54,785 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 152 states. [2018-07-25 08:38:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:55,741 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2018-07-25 08:38:55,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:38:55,741 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 300 [2018-07-25 08:38:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:55,741 INFO L225 Difference]: With dead ends: 306 [2018-07-25 08:38:55,741 INFO L226 Difference]: Without dead ends: 304 [2018-07-25 08:38:55,744 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 08:38:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-07-25 08:38:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2018-07-25 08:38:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:38:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-25 08:38:55,751 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-25 08:38:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:55,751 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-25 08:38:55,751 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:38:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-25 08:38:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:38:55,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:55,752 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-25 08:38:55,752 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:55,752 INFO L82 PathProgramCache]: Analyzing trace with hash -385370771, now seen corresponding path program 149 times [2018-07-25 08:38:55,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:56,297 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 08:38:56,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:56,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:38:56,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:38:56,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:38:56,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11478, Invalid=11778, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:38:56,301 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 153 states. [2018-07-25 08:38:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:57,379 INFO L93 Difference]: Finished difference Result 308 states and 308 transitions. [2018-07-25 08:38:57,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:38:57,379 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 302 [2018-07-25 08:38:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:57,380 INFO L225 Difference]: With dead ends: 308 [2018-07-25 08:38:57,380 INFO L226 Difference]: Without dead ends: 306 [2018-07-25 08:38:57,384 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 08:38:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-07-25 08:38:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2018-07-25 08:38:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:38:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-25 08:38:57,391 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-25 08:38:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:57,391 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-25 08:38:57,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:38:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-25 08:38:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:38:57,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:57,392 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-25 08:38:57,392 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:57,392 INFO L82 PathProgramCache]: Analyzing trace with hash -974176777, now seen corresponding path program 150 times [2018-07-25 08:38:57,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:57,952 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 08:38:57,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:57,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:38:57,953 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:38:57,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:38:57,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11630, Invalid=11932, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:38:57,956 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 154 states. [2018-07-25 08:38:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:58,964 INFO L93 Difference]: Finished difference Result 310 states and 310 transitions. [2018-07-25 08:38:58,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:38:58,965 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 304 [2018-07-25 08:38:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:58,965 INFO L225 Difference]: With dead ends: 310 [2018-07-25 08:38:58,965 INFO L226 Difference]: Without dead ends: 308 [2018-07-25 08:38:58,968 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 08:38:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-07-25 08:38:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2018-07-25 08:38:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:38:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-25 08:38:58,974 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-25 08:38:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:58,975 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-25 08:38:58,975 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:38:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-25 08:38:58,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:38:58,975 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:58,976 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-25 08:38:58,976 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:58,976 INFO L82 PathProgramCache]: Analyzing trace with hash 118934529, now seen corresponding path program 151 times [2018-07-25 08:38:58,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:59,532 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 08:38:59,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:59,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:38:59,532 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:38:59,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:38:59,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11783, Invalid=12087, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:38:59,535 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 155 states. [2018-07-25 08:39:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:00,593 INFO L93 Difference]: Finished difference Result 312 states and 312 transitions. [2018-07-25 08:39:00,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:39:00,593 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 306 [2018-07-25 08:39:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:00,594 INFO L225 Difference]: With dead ends: 312 [2018-07-25 08:39:00,594 INFO L226 Difference]: Without dead ends: 310 [2018-07-25 08:39:00,598 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 08:39:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-07-25 08:39:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2018-07-25 08:39:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:39:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-25 08:39:00,605 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-25 08:39:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:00,605 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-25 08:39:00,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:39:00,605 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-25 08:39:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:39:00,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:00,606 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-25 08:39:00,606 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:00,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1668087925, now seen corresponding path program 152 times [2018-07-25 08:39:00,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:01,191 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 08:39:01,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:01,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:39:01,192 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:39:01,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:39:01,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11937, Invalid=12243, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:39:01,194 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 156 states. [2018-07-25 08:39:02,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:02,204 INFO L93 Difference]: Finished difference Result 314 states and 314 transitions. [2018-07-25 08:39:02,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:39:02,204 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 308 [2018-07-25 08:39:02,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:02,204 INFO L225 Difference]: With dead ends: 314 [2018-07-25 08:39:02,205 INFO L226 Difference]: Without dead ends: 312 [2018-07-25 08:39:02,207 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 08:39:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-07-25 08:39:02,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2018-07-25 08:39:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:39:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-25 08:39:02,214 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-25 08:39:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:02,214 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-25 08:39:02,214 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:39:02,214 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-25 08:39:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:39:02,215 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:02,215 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-25 08:39:02,215 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1009747819, now seen corresponding path program 153 times [2018-07-25 08:39:02,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:02,789 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 08:39:02,789 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:02,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:39:02,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:39:02,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:39:02,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12092, Invalid=12400, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:39:02,792 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 157 states. [2018-07-25 08:39:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:03,910 INFO L93 Difference]: Finished difference Result 316 states and 316 transitions. [2018-07-25 08:39:03,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:39:03,911 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 310 [2018-07-25 08:39:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:03,911 INFO L225 Difference]: With dead ends: 316 [2018-07-25 08:39:03,911 INFO L226 Difference]: Without dead ends: 314 [2018-07-25 08:39:03,915 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11934 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36270, Invalid=60140, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 08:39:03,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-07-25 08:39:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 313. [2018-07-25 08:39:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:39:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-25 08:39:03,922 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-25 08:39:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:03,923 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-25 08:39:03,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:39:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-25 08:39:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:39:03,923 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:03,924 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-25 08:39:03,924 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash 294901535, now seen corresponding path program 154 times [2018-07-25 08:39:03,924 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:04,521 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 08:39:04,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:04,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:39:04,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:39:04,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:39:04,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12248, Invalid=12558, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:39:04,524 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 158 states. [2018-07-25 08:39:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:05,537 INFO L93 Difference]: Finished difference Result 318 states and 318 transitions. [2018-07-25 08:39:05,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:39:05,537 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 312 [2018-07-25 08:39:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:05,537 INFO L225 Difference]: With dead ends: 318 [2018-07-25 08:39:05,537 INFO L226 Difference]: Without dead ends: 316 [2018-07-25 08:39:05,541 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12089 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36738, Invalid=60918, Unknown=0, NotChecked=0, Total=97656 [2018-07-25 08:39:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-07-25 08:39:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2018-07-25 08:39:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:39:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-25 08:39:05,553 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-25 08:39:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:05,553 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-25 08:39:05,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:39:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-25 08:39:05,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:39:05,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:05,555 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-25 08:39:05,555 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:05,555 INFO L82 PathProgramCache]: Analyzing trace with hash -67519703, now seen corresponding path program 155 times [2018-07-25 08:39:05,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:06,385 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 08:39:06,385 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:06,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:39:06,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:39:06,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:39:06,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12405, Invalid=12717, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:39:06,388 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 159 states. [2018-07-25 08:39:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:07,520 INFO L93 Difference]: Finished difference Result 320 states and 320 transitions. [2018-07-25 08:39:07,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:39:07,520 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 314 [2018-07-25 08:39:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:07,521 INFO L225 Difference]: With dead ends: 320 [2018-07-25 08:39:07,521 INFO L226 Difference]: Without dead ends: 318 [2018-07-25 08:39:07,525 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12245 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37209, Invalid=61701, Unknown=0, NotChecked=0, Total=98910 [2018-07-25 08:39:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-07-25 08:39:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2018-07-25 08:39:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:39:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-25 08:39:07,532 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-25 08:39:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:07,533 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-25 08:39:07,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:39:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-25 08:39:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:39:07,533 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:07,534 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-25 08:39:07,534 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:07,534 INFO L82 PathProgramCache]: Analyzing trace with hash -461978445, now seen corresponding path program 156 times [2018-07-25 08:39:07,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:08,203 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 08:39:08,203 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:08,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:39:08,204 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:39:08,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:39:08,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12563, Invalid=12877, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:39:08,205 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 160 states. [2018-07-25 08:39:09,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:09,258 INFO L93 Difference]: Finished difference Result 322 states and 322 transitions. [2018-07-25 08:39:09,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:39:09,258 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 316 [2018-07-25 08:39:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:09,259 INFO L225 Difference]: With dead ends: 322 [2018-07-25 08:39:09,259 INFO L226 Difference]: Without dead ends: 320 [2018-07-25 08:39:09,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12402 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37683, Invalid=62489, Unknown=0, NotChecked=0, Total=100172 [2018-07-25 08:39:09,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-25 08:39:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2018-07-25 08:39:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:39:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-25 08:39:09,269 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-25 08:39:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:09,270 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-25 08:39:09,270 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:39:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-25 08:39:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:39:09,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:09,271 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-25 08:39:09,271 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:09,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1579707459, now seen corresponding path program 157 times [2018-07-25 08:39:09,271 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:09,875 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 08:39:09,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:09,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:39:09,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:39:09,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:39:09,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12722, Invalid=13038, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:39:09,878 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 161 states. [2018-07-25 08:39:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:11,073 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2018-07-25 08:39:11,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:39:11,073 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 318 [2018-07-25 08:39:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:11,074 INFO L225 Difference]: With dead ends: 324 [2018-07-25 08:39:11,074 INFO L226 Difference]: Without dead ends: 322 [2018-07-25 08:39:11,078 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12560 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38160, Invalid=63282, Unknown=0, NotChecked=0, Total=101442 [2018-07-25 08:39:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-07-25 08:39:11,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2018-07-25 08:39:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:39:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-25 08:39:11,085 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-25 08:39:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:11,085 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-25 08:39:11,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:39:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-25 08:39:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:39:11,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:11,086 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-25 08:39:11,086 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:11,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1975465913, now seen corresponding path program 158 times [2018-07-25 08:39:11,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:11,758 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 08:39:11,758 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:11,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:39:11,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:39:11,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:39:11,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12882, Invalid=13200, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:39:11,760 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 162 states. [2018-07-25 08:39:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:12,884 INFO L93 Difference]: Finished difference Result 326 states and 326 transitions. [2018-07-25 08:39:12,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:39:12,884 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 320 [2018-07-25 08:39:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:12,885 INFO L225 Difference]: With dead ends: 326 [2018-07-25 08:39:12,885 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 08:39:12,889 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12719 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38640, Invalid=64080, Unknown=0, NotChecked=0, Total=102720 [2018-07-25 08:39:12,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 08:39:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2018-07-25 08:39:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:39:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-25 08:39:12,896 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-25 08:39:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:12,896 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-25 08:39:12,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:39:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-25 08:39:12,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:39:12,897 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:12,897 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-25 08:39:12,897 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:12,898 INFO L82 PathProgramCache]: Analyzing trace with hash -47250863, now seen corresponding path program 159 times [2018-07-25 08:39:12,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:13,515 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 08:39:13,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:13,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:39:13,516 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:39:13,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:39:13,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13043, Invalid=13363, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:39:13,519 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 163 states. [2018-07-25 08:39:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:14,770 INFO L93 Difference]: Finished difference Result 328 states and 328 transitions. [2018-07-25 08:39:14,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:39:14,770 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 322 [2018-07-25 08:39:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:14,771 INFO L225 Difference]: With dead ends: 328 [2018-07-25 08:39:14,771 INFO L226 Difference]: Without dead ends: 326 [2018-07-25 08:39:14,776 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 08:39:14,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-07-25 08:39:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 325. [2018-07-25 08:39:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:39:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-25 08:39:14,783 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-25 08:39:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:14,783 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-25 08:39:14,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:39:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-25 08:39:14,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:39:14,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:14,785 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-25 08:39:14,785 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:14,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1836507611, now seen corresponding path program 160 times [2018-07-25 08:39:14,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:15,456 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 08:39:15,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:15,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:39:15,456 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:39:15,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:39:15,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13205, Invalid=13527, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:39:15,459 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 164 states. [2018-07-25 08:39:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:16,646 INFO L93 Difference]: Finished difference Result 330 states and 330 transitions. [2018-07-25 08:39:16,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:39:16,646 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 324 [2018-07-25 08:39:16,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:16,647 INFO L225 Difference]: With dead ends: 330 [2018-07-25 08:39:16,647 INFO L226 Difference]: Without dead ends: 328 [2018-07-25 08:39:16,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13040 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39609, Invalid=65691, Unknown=0, NotChecked=0, Total=105300 [2018-07-25 08:39:16,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-07-25 08:39:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2018-07-25 08:39:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:39:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-25 08:39:16,659 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-25 08:39:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:16,659 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-25 08:39:16,659 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:39:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-25 08:39:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:39:16,660 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:16,660 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-25 08:39:16,661 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:16,661 INFO L82 PathProgramCache]: Analyzing trace with hash -347797787, now seen corresponding path program 161 times [2018-07-25 08:39:16,661 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:17,398 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 08:39:17,399 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:17,399 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:39:17,399 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:39:17,401 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:39:17,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13368, Invalid=13692, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:39:17,402 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 165 states. [2018-07-25 08:39:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:18,682 INFO L93 Difference]: Finished difference Result 332 states and 332 transitions. [2018-07-25 08:39:18,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:39:18,683 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 326 [2018-07-25 08:39:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:18,683 INFO L225 Difference]: With dead ends: 332 [2018-07-25 08:39:18,683 INFO L226 Difference]: Without dead ends: 330 [2018-07-25 08:39:18,685 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13202 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40098, Invalid=66504, Unknown=0, NotChecked=0, Total=106602 [2018-07-25 08:39:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2018-07-25 08:39:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2018-07-25 08:39:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:39:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-25 08:39:18,692 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-25 08:39:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:18,692 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-25 08:39:18,692 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:39:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-25 08:39:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:39:18,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:18,693 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-25 08:39:18,693 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:18,694 INFO L82 PathProgramCache]: Analyzing trace with hash 773722479, now seen corresponding path program 162 times [2018-07-25 08:39:18,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:19,348 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 08:39:19,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:19,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:39:19,349 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:39:19,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:39:19,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13532, Invalid=13858, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:39:19,352 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 166 states. [2018-07-25 08:39:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:20,609 INFO L93 Difference]: Finished difference Result 334 states and 334 transitions. [2018-07-25 08:39:20,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:39:20,610 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 328 [2018-07-25 08:39:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:20,610 INFO L225 Difference]: With dead ends: 334 [2018-07-25 08:39:20,610 INFO L226 Difference]: Without dead ends: 332 [2018-07-25 08:39:20,615 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 08:39:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-07-25 08:39:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2018-07-25 08:39:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:39:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-25 08:39:20,627 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-25 08:39:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:20,628 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-25 08:39:20,628 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:39:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-25 08:39:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:39:20,629 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:20,629 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-25 08:39:20,630 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:20,630 INFO L82 PathProgramCache]: Analyzing trace with hash 517906809, now seen corresponding path program 163 times [2018-07-25 08:39:20,630 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:21,394 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 08:39:21,395 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:21,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:39:21,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:39:21,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:39:21,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13697, Invalid=14025, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:39:21,398 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 167 states. [2018-07-25 08:39:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:22,573 INFO L93 Difference]: Finished difference Result 336 states and 336 transitions. [2018-07-25 08:39:22,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:39:22,573 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 330 [2018-07-25 08:39:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:22,574 INFO L225 Difference]: With dead ends: 336 [2018-07-25 08:39:22,574 INFO L226 Difference]: Without dead ends: 334 [2018-07-25 08:39:22,577 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 08:39:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-07-25 08:39:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2018-07-25 08:39:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:39:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-25 08:39:22,584 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-25 08:39:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:22,584 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-25 08:39:22,584 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:39:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-25 08:39:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:39:22,585 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:22,585 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-25 08:39:22,585 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:22,586 INFO L82 PathProgramCache]: Analyzing trace with hash -507816189, now seen corresponding path program 164 times [2018-07-25 08:39:22,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:23,243 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 08:39:23,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:23,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:39:23,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:39:23,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:39:23,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13863, Invalid=14193, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:39:23,247 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 168 states. [2018-07-25 08:39:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:24,527 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2018-07-25 08:39:24,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:39:24,527 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 332 [2018-07-25 08:39:24,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:24,527 INFO L225 Difference]: With dead ends: 338 [2018-07-25 08:39:24,527 INFO L226 Difference]: Without dead ends: 336 [2018-07-25 08:39:24,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13694 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41583, Invalid=68973, Unknown=0, NotChecked=0, Total=110556 [2018-07-25 08:39:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-07-25 08:39:24,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 335. [2018-07-25 08:39:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:39:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-25 08:39:24,539 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-25 08:39:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:24,540 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-25 08:39:24,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:39:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-25 08:39:24,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:39:24,541 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:24,541 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-25 08:39:24,541 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:24,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1614860813, now seen corresponding path program 165 times [2018-07-25 08:39:24,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:25,263 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 08:39:25,263 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:25,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:39:25,264 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:39:25,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:39:25,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14030, Invalid=14362, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:39:25,266 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 169 states. [2018-07-25 08:39:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:26,454 INFO L93 Difference]: Finished difference Result 340 states and 340 transitions. [2018-07-25 08:39:26,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:39:26,454 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 334 [2018-07-25 08:39:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:26,454 INFO L225 Difference]: With dead ends: 340 [2018-07-25 08:39:26,454 INFO L226 Difference]: Without dead ends: 338 [2018-07-25 08:39:26,459 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 08:39:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-07-25 08:39:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2018-07-25 08:39:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:39:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-25 08:39:26,466 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-25 08:39:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:26,467 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-25 08:39:26,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:39:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-25 08:39:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:39:26,468 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:26,468 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-25 08:39:26,468 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:26,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1397994135, now seen corresponding path program 166 times [2018-07-25 08:39:26,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:27,149 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 08:39:27,149 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:27,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:39:27,150 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:39:27,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:39:27,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14198, Invalid=14532, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:39:27,153 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 170 states. [2018-07-25 08:39:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:28,602 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2018-07-25 08:39:28,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:39:28,602 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 336 [2018-07-25 08:39:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:28,602 INFO L225 Difference]: With dead ends: 342 [2018-07-25 08:39:28,602 INFO L226 Difference]: Without dead ends: 340 [2018-07-25 08:39:28,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14027 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=42588, Invalid=70644, Unknown=0, NotChecked=0, Total=113232 [2018-07-25 08:39:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-25 08:39:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 339. [2018-07-25 08:39:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:39:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-25 08:39:28,611 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-25 08:39:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:28,611 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-25 08:39:28,611 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:39:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-25 08:39:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:39:28,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:28,612 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-25 08:39:28,612 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash -852453215, now seen corresponding path program 167 times [2018-07-25 08:39:28,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:29,301 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 08:39:29,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:29,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:39:29,302 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:39:29,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:39:29,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14367, Invalid=14703, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:39:29,305 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 171 states. [2018-07-25 08:39:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:30,616 INFO L93 Difference]: Finished difference Result 344 states and 344 transitions. [2018-07-25 08:39:30,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:39:30,616 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 338 [2018-07-25 08:39:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:30,617 INFO L225 Difference]: With dead ends: 344 [2018-07-25 08:39:30,617 INFO L226 Difference]: Without dead ends: 342 [2018-07-25 08:39:30,622 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 08:39:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-07-25 08:39:30,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 341. [2018-07-25 08:39:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:39:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-25 08:39:30,629 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-25 08:39:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:30,629 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-25 08:39:30,629 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:39:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-25 08:39:30,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:39:30,630 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:30,630 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-25 08:39:30,631 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:30,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1131160619, now seen corresponding path program 168 times [2018-07-25 08:39:30,631 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:31,332 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 08:39:31,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:31,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:39:31,333 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:39:31,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:39:31,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14537, Invalid=14875, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:39:31,336 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 172 states. [2018-07-25 08:39:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:32,553 INFO L93 Difference]: Finished difference Result 346 states and 346 transitions. [2018-07-25 08:39:32,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:39:32,553 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 340 [2018-07-25 08:39:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:32,554 INFO L225 Difference]: With dead ends: 346 [2018-07-25 08:39:32,554 INFO L226 Difference]: Without dead ends: 344 [2018-07-25 08:39:32,557 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14364 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43605, Invalid=72335, Unknown=0, NotChecked=0, Total=115940 [2018-07-25 08:39:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-07-25 08:39:32,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2018-07-25 08:39:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:39:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-25 08:39:32,564 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-25 08:39:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:32,565 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-25 08:39:32,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:39:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-25 08:39:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:39:32,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:32,566 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-25 08:39:32,566 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:32,566 INFO L82 PathProgramCache]: Analyzing trace with hash 418575669, now seen corresponding path program 169 times [2018-07-25 08:39:32,566 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:33,279 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 08:39:33,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:33,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:39:33,280 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:39:33,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:39:33,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14708, Invalid=15048, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:39:33,283 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 173 states. [2018-07-25 08:39:34,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:34,697 INFO L93 Difference]: Finished difference Result 348 states and 348 transitions. [2018-07-25 08:39:34,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:39:34,697 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 342 [2018-07-25 08:39:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:34,698 INFO L225 Difference]: With dead ends: 348 [2018-07-25 08:39:34,698 INFO L226 Difference]: Without dead ends: 346 [2018-07-25 08:39:34,703 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14534 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=44118, Invalid=73188, Unknown=0, NotChecked=0, Total=117306 [2018-07-25 08:39:34,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-07-25 08:39:34,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 345. [2018-07-25 08:39:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:39:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-25 08:39:34,710 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-25 08:39:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:34,710 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-25 08:39:34,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:39:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-25 08:39:34,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:39:34,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:34,711 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-25 08:39:34,711 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:34,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1475761217, now seen corresponding path program 170 times [2018-07-25 08:39:34,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:35,483 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 08:39:35,484 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:35,484 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:39:35,484 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:39:35,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:39:35,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14880, Invalid=15222, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:39:35,488 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 174 states. [2018-07-25 08:39:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:36,794 INFO L93 Difference]: Finished difference Result 350 states and 350 transitions. [2018-07-25 08:39:36,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:39:36,794 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 344 [2018-07-25 08:39:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:36,795 INFO L225 Difference]: With dead ends: 350 [2018-07-25 08:39:36,795 INFO L226 Difference]: Without dead ends: 348 [2018-07-25 08:39:36,800 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 08:39:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-07-25 08:39:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2018-07-25 08:39:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:39:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-25 08:39:36,808 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-25 08:39:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:36,808 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-25 08:39:36,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:39:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-25 08:39:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:39:36,809 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:36,809 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-25 08:39:36,809 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:36,809 INFO L82 PathProgramCache]: Analyzing trace with hash -867375159, now seen corresponding path program 171 times [2018-07-25 08:39:36,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:37,538 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 08:39:37,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:37,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:39:37,539 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:39:37,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:39:37,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15053, Invalid=15397, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:39:37,541 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 175 states. [2018-07-25 08:39:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:38,878 INFO L93 Difference]: Finished difference Result 352 states and 352 transitions. [2018-07-25 08:39:38,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:39:38,878 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 346 [2018-07-25 08:39:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:38,879 INFO L225 Difference]: With dead ends: 352 [2018-07-25 08:39:38,879 INFO L226 Difference]: Without dead ends: 350 [2018-07-25 08:39:38,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14877 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=45153, Invalid=74909, Unknown=0, NotChecked=0, Total=120062 [2018-07-25 08:39:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-07-25 08:39:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2018-07-25 08:39:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:39:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-25 08:39:38,889 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-25 08:39:38,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:38,889 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-25 08:39:38,889 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:39:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-25 08:39:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:39:38,890 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:38,890 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-25 08:39:38,891 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash -323925677, now seen corresponding path program 172 times [2018-07-25 08:39:38,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:39,620 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 08:39:39,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:39,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:39:39,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:39:39,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:39:39,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15227, Invalid=15573, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:39:39,624 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 176 states. [2018-07-25 08:39:41,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:41,026 INFO L93 Difference]: Finished difference Result 354 states and 354 transitions. [2018-07-25 08:39:41,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:39:41,026 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 348 [2018-07-25 08:39:41,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:41,026 INFO L225 Difference]: With dead ends: 354 [2018-07-25 08:39:41,027 INFO L226 Difference]: Without dead ends: 352 [2018-07-25 08:39:41,032 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 08:39:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-07-25 08:39:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 351. [2018-07-25 08:39:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:39:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-25 08:39:41,039 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-25 08:39:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:41,039 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-25 08:39:41,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:39:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-25 08:39:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:39:41,040 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:41,041 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-25 08:39:41,041 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:41,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2054983587, now seen corresponding path program 173 times [2018-07-25 08:39:41,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:41,827 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 08:39:41,827 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:41,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:39:41,828 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:39:41,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:39:41,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15402, Invalid=15750, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:39:41,830 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 177 states. [2018-07-25 08:39:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:43,199 INFO L93 Difference]: Finished difference Result 356 states and 356 transitions. [2018-07-25 08:39:43,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:39:43,200 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 350 [2018-07-25 08:39:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:43,200 INFO L225 Difference]: With dead ends: 356 [2018-07-25 08:39:43,200 INFO L226 Difference]: Without dead ends: 354 [2018-07-25 08:39:43,205 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 08:39:43,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-07-25 08:39:43,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 353. [2018-07-25 08:39:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:39:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-25 08:39:43,213 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-25 08:39:43,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:43,213 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-25 08:39:43,213 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:39:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-25 08:39:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:39:43,214 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:43,214 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-25 08:39:43,214 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:43,214 INFO L82 PathProgramCache]: Analyzing trace with hash 845675751, now seen corresponding path program 174 times [2018-07-25 08:39:43,214 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:43,957 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 08:39:43,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:43,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:39:43,958 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:39:43,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:39:43,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15578, Invalid=15928, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:39:43,961 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 178 states. [2018-07-25 08:39:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:45,384 INFO L93 Difference]: Finished difference Result 358 states and 358 transitions. [2018-07-25 08:39:45,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:39:45,384 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 352 [2018-07-25 08:39:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:45,385 INFO L225 Difference]: With dead ends: 358 [2018-07-25 08:39:45,385 INFO L226 Difference]: Without dead ends: 356 [2018-07-25 08:39:45,387 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 08:39:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-25 08:39:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 355. [2018-07-25 08:39:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:39:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-25 08:39:45,395 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-25 08:39:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:45,395 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-25 08:39:45,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:39:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-25 08:39:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:39:45,396 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:45,396 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-25 08:39:45,396 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash 945524465, now seen corresponding path program 175 times [2018-07-25 08:39:45,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:46,145 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 08:39:46,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:46,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:39:46,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:39:46,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:39:46,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15755, Invalid=16107, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:39:46,150 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 179 states. [2018-07-25 08:39:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:47,666 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2018-07-25 08:39:47,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:39:47,666 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 354 [2018-07-25 08:39:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:47,666 INFO L225 Difference]: With dead ends: 360 [2018-07-25 08:39:47,666 INFO L226 Difference]: Without dead ends: 358 [2018-07-25 08:39:47,673 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15575 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47259, Invalid=78411, Unknown=0, NotChecked=0, Total=125670 [2018-07-25 08:39:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-07-25 08:39:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 357. [2018-07-25 08:39:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:39:47,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-25 08:39:47,680 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-25 08:39:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:47,680 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-25 08:39:47,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:39:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-25 08:39:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:39:47,681 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:47,682 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-25 08:39:47,682 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:47,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1884109189, now seen corresponding path program 176 times [2018-07-25 08:39:47,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:48,500 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 08:39:48,501 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:48,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:39:48,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:39:48,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:39:48,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15933, Invalid=16287, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:39:48,503 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 180 states. [2018-07-25 08:39:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:49,885 INFO L93 Difference]: Finished difference Result 362 states and 362 transitions. [2018-07-25 08:39:49,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:39:49,885 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 356 [2018-07-25 08:39:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:49,885 INFO L225 Difference]: With dead ends: 362 [2018-07-25 08:39:49,886 INFO L226 Difference]: Without dead ends: 360 [2018-07-25 08:39:49,890 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15752 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47793, Invalid=79299, Unknown=0, NotChecked=0, Total=127092 [2018-07-25 08:39:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-07-25 08:39:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2018-07-25 08:39:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:39:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-25 08:39:49,898 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-25 08:39:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:49,898 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-25 08:39:49,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:39:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-25 08:39:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:39:49,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:49,899 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-25 08:39:49,900 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1847214981, now seen corresponding path program 177 times [2018-07-25 08:39:49,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:50,668 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 08:39:50,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:50,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:39:50,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:39:50,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:39:50,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16112, Invalid=16468, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:39:50,672 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 181 states. [2018-07-25 08:39:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:52,140 INFO L93 Difference]: Finished difference Result 364 states and 364 transitions. [2018-07-25 08:39:52,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:39:52,140 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 358 [2018-07-25 08:39:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:52,140 INFO L225 Difference]: With dead ends: 364 [2018-07-25 08:39:52,140 INFO L226 Difference]: Without dead ends: 362 [2018-07-25 08:39:52,143 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 08:39:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-07-25 08:39:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2018-07-25 08:39:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:39:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-25 08:39:52,151 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-25 08:39:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:52,152 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-25 08:39:52,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:39:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-25 08:39:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:39:52,153 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:52,153 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-25 08:39:52,153 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:52,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1352050191, now seen corresponding path program 178 times [2018-07-25 08:39:52,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:52,932 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 08:39:52,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:52,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:39:52,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:39:52,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:39:52,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16292, Invalid=16650, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:39:52,936 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 182 states. [2018-07-25 08:39:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:54,465 INFO L93 Difference]: Finished difference Result 366 states and 366 transitions. [2018-07-25 08:39:54,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:39:54,465 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 360 [2018-07-25 08:39:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:54,466 INFO L225 Difference]: With dead ends: 366 [2018-07-25 08:39:54,466 INFO L226 Difference]: Without dead ends: 364 [2018-07-25 08:39:54,474 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 08:39:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-07-25 08:39:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 363. [2018-07-25 08:39:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:39:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-25 08:39:54,482 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-25 08:39:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:54,482 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-25 08:39:54,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:39:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-25 08:39:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:39:54,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:54,483 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-25 08:39:54,483 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:54,483 INFO L82 PathProgramCache]: Analyzing trace with hash -2054910439, now seen corresponding path program 179 times [2018-07-25 08:39:54,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:55,314 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 08:39:55,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:55,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:39:55,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:39:55,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:39:55,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16473, Invalid=16833, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:39:55,318 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 183 states. [2018-07-25 08:39:56,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:56,821 INFO L93 Difference]: Finished difference Result 368 states and 368 transitions. [2018-07-25 08:39:56,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:39:56,821 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 362 [2018-07-25 08:39:56,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:56,822 INFO L225 Difference]: With dead ends: 368 [2018-07-25 08:39:56,822 INFO L226 Difference]: Without dead ends: 366 [2018-07-25 08:39:56,827 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16289 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=49413, Invalid=81993, Unknown=0, NotChecked=0, Total=131406 [2018-07-25 08:39:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-07-25 08:39:56,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2018-07-25 08:39:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:39:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-25 08:39:56,835 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-25 08:39:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:56,835 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-25 08:39:56,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:39:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-25 08:39:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:39:56,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:56,836 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-25 08:39:56,836 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:56,837 INFO L82 PathProgramCache]: Analyzing trace with hash 915970979, now seen corresponding path program 180 times [2018-07-25 08:39:56,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:57,633 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 08:39:57,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:57,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:39:57,634 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:39:57,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:39:57,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16655, Invalid=17017, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:39:57,637 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 184 states. [2018-07-25 08:39:59,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:59,127 INFO L93 Difference]: Finished difference Result 370 states and 370 transitions. [2018-07-25 08:39:59,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:39:59,128 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 364 [2018-07-25 08:39:59,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:59,128 INFO L225 Difference]: With dead ends: 370 [2018-07-25 08:39:59,128 INFO L226 Difference]: Without dead ends: 368 [2018-07-25 08:39:59,132 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16470 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=49959, Invalid=82901, Unknown=0, NotChecked=0, Total=132860 [2018-07-25 08:39:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-07-25 08:39:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 367. [2018-07-25 08:39:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:39:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-25 08:39:59,140 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-25 08:39:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:59,140 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-25 08:39:59,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:39:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-25 08:39:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:39:59,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:59,141 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-25 08:39:59,141 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:59,141 INFO L82 PathProgramCache]: Analyzing trace with hash -220238163, now seen corresponding path program 181 times [2018-07-25 08:39:59,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:59,949 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 08:39:59,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:59,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:39:59,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:39:59,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:39:59,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16838, Invalid=17202, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:39:59,953 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 185 states. [2018-07-25 08:40:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:01,555 INFO L93 Difference]: Finished difference Result 372 states and 372 transitions. [2018-07-25 08:40:01,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:40:01,556 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 366 [2018-07-25 08:40:01,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:01,556 INFO L225 Difference]: With dead ends: 372 [2018-07-25 08:40:01,556 INFO L226 Difference]: Without dead ends: 370 [2018-07-25 08:40:01,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16652 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=50508, Invalid=83814, Unknown=0, NotChecked=0, Total=134322 [2018-07-25 08:40:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-07-25 08:40:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2018-07-25 08:40:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:40:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-25 08:40:01,570 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-25 08:40:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:01,570 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-25 08:40:01,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:40:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-25 08:40:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:40:01,571 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:01,571 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-25 08:40:01,571 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:01,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1195530441, now seen corresponding path program 182 times [2018-07-25 08:40:01,572 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:02,442 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 08:40:02,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:02,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:40:02,442 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:40:02,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:40:02,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17022, Invalid=17388, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:40:02,446 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 186 states. [2018-07-25 08:40:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:04,034 INFO L93 Difference]: Finished difference Result 374 states and 374 transitions. [2018-07-25 08:40:04,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:40:04,034 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 368 [2018-07-25 08:40:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:04,035 INFO L225 Difference]: With dead ends: 374 [2018-07-25 08:40:04,035 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 08:40:04,041 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 08:40:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 08:40:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 371. [2018-07-25 08:40:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:40:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-25 08:40:04,049 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-25 08:40:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:04,049 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-25 08:40:04,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:40:04,049 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-25 08:40:04,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:40:04,050 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:04,050 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-25 08:40:04,050 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2146428225, now seen corresponding path program 183 times [2018-07-25 08:40:04,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:04,977 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 08:40:04,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:04,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:40:04,977 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:40:04,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:40:04,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17207, Invalid=17575, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:40:04,979 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 187 states. [2018-07-25 08:40:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:06,486 INFO L93 Difference]: Finished difference Result 376 states and 376 transitions. [2018-07-25 08:40:06,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:40:06,486 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 370 [2018-07-25 08:40:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:06,487 INFO L225 Difference]: With dead ends: 376 [2018-07-25 08:40:06,487 INFO L226 Difference]: Without dead ends: 374 [2018-07-25 08:40:06,492 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17019 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=51615, Invalid=85655, Unknown=0, NotChecked=0, Total=137270 [2018-07-25 08:40:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-07-25 08:40:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 373. [2018-07-25 08:40:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:40:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-25 08:40:06,500 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-25 08:40:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:06,500 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-25 08:40:06,500 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:40:06,500 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-25 08:40:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:40:06,501 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:06,501 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-25 08:40:06,501 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1133168843, now seen corresponding path program 184 times [2018-07-25 08:40:06,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:07,345 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 08:40:07,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:07,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:40:07,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:40:07,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:40:07,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17393, Invalid=17763, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:40:07,349 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 188 states. [2018-07-25 08:40:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:08,927 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2018-07-25 08:40:08,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:40:08,927 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 372 [2018-07-25 08:40:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:08,928 INFO L225 Difference]: With dead ends: 378 [2018-07-25 08:40:08,928 INFO L226 Difference]: Without dead ends: 376 [2018-07-25 08:40:08,931 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 08:40:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-07-25 08:40:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 375. [2018-07-25 08:40:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:40:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-25 08:40:08,939 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-25 08:40:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:08,940 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-25 08:40:08,940 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:40:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-25 08:40:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:40:08,941 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:08,941 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-25 08:40:08,941 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1946488363, now seen corresponding path program 185 times [2018-07-25 08:40:08,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:09,799 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 08:40:09,799 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:09,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:40:09,800 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:40:09,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:40:09,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17580, Invalid=17952, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:40:09,803 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 189 states. [2018-07-25 08:40:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:11,453 INFO L93 Difference]: Finished difference Result 380 states and 380 transitions. [2018-07-25 08:40:11,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:40:11,453 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 374 [2018-07-25 08:40:11,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:11,453 INFO L225 Difference]: With dead ends: 380 [2018-07-25 08:40:11,454 INFO L226 Difference]: Without dead ends: 378 [2018-07-25 08:40:11,460 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 08:40:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-07-25 08:40:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 377. [2018-07-25 08:40:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:40:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-25 08:40:11,468 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-25 08:40:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:11,468 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-25 08:40:11,468 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:40:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-25 08:40:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:40:11,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:11,469 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-25 08:40:11,469 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:11,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2030370911, now seen corresponding path program 186 times [2018-07-25 08:40:11,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:12,369 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 08:40:12,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:12,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:40:12,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:40:12,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:40:12,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17768, Invalid=18142, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:40:12,373 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 190 states. [2018-07-25 08:40:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:14,082 INFO L93 Difference]: Finished difference Result 382 states and 382 transitions. [2018-07-25 08:40:14,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:40:14,083 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 376 [2018-07-25 08:40:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:14,084 INFO L225 Difference]: With dead ends: 382 [2018-07-25 08:40:14,084 INFO L226 Difference]: Without dead ends: 380 [2018-07-25 08:40:14,090 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 08:40:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-07-25 08:40:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 379. [2018-07-25 08:40:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:40:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-25 08:40:14,098 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-25 08:40:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:14,098 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-25 08:40:14,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:40:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-25 08:40:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:40:14,100 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:14,100 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-25 08:40:14,100 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1271239785, now seen corresponding path program 187 times [2018-07-25 08:40:14,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:15,044 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 08:40:15,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:15,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:40:15,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:40:15,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:40:15,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17957, Invalid=18333, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:40:15,047 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 191 states. [2018-07-25 08:40:16,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:16,661 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2018-07-25 08:40:16,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:40:16,661 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 378 [2018-07-25 08:40:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:16,662 INFO L225 Difference]: With dead ends: 384 [2018-07-25 08:40:16,662 INFO L226 Difference]: Without dead ends: 382 [2018-07-25 08:40:16,667 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17765 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=53865, Invalid=89397, Unknown=0, NotChecked=0, Total=143262 [2018-07-25 08:40:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-07-25 08:40:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 381. [2018-07-25 08:40:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:40:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-25 08:40:16,675 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-25 08:40:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:16,675 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-25 08:40:16,676 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:40:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-25 08:40:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:40:16,677 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:16,677 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-25 08:40:16,677 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1890668019, now seen corresponding path program 188 times [2018-07-25 08:40:16,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:17,560 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 08:40:17,561 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:17,561 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:40:17,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:40:17,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:40:17,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18147, Invalid=18525, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:40:17,565 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 192 states. [2018-07-25 08:40:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:19,219 INFO L93 Difference]: Finished difference Result 386 states and 386 transitions. [2018-07-25 08:40:19,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:40:19,219 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 380 [2018-07-25 08:40:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:19,220 INFO L225 Difference]: With dead ends: 386 [2018-07-25 08:40:19,220 INFO L226 Difference]: Without dead ends: 384 [2018-07-25 08:40:19,224 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 08:40:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-07-25 08:40:19,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 383. [2018-07-25 08:40:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:40:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-25 08:40:19,232 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-25 08:40:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:19,232 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-25 08:40:19,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:40:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-25 08:40:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:40:19,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:19,234 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-25 08:40:19,234 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:19,234 INFO L82 PathProgramCache]: Analyzing trace with hash 160746749, now seen corresponding path program 189 times [2018-07-25 08:40:19,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:20,113 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 08:40:20,113 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:20,113 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:40:20,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:40:20,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:40:20,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18338, Invalid=18718, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:40:20,117 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 193 states. [2018-07-25 08:40:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:21,870 INFO L93 Difference]: Finished difference Result 388 states and 388 transitions. [2018-07-25 08:40:21,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:40:21,870 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 382 [2018-07-25 08:40:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:21,871 INFO L225 Difference]: With dead ends: 388 [2018-07-25 08:40:21,871 INFO L226 Difference]: Without dead ends: 386 [2018-07-25 08:40:21,877 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 08:40:21,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-07-25 08:40:21,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 385. [2018-07-25 08:40:21,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:40:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-25 08:40:21,951 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-25 08:40:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:21,951 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-25 08:40:21,951 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:40:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-25 08:40:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:40:21,952 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:21,952 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-25 08:40:21,953 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:21,953 INFO L82 PathProgramCache]: Analyzing trace with hash -141250169, now seen corresponding path program 190 times [2018-07-25 08:40:21,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:22,861 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 08:40:22,862 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:22,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:40:22,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:40:22,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:40:22,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18530, Invalid=18912, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:40:22,866 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 194 states. [2018-07-25 08:40:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:24,617 INFO L93 Difference]: Finished difference Result 390 states and 390 transitions. [2018-07-25 08:40:24,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:40:24,617 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 384 [2018-07-25 08:40:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:24,618 INFO L225 Difference]: With dead ends: 390 [2018-07-25 08:40:24,618 INFO L226 Difference]: Without dead ends: 388 [2018-07-25 08:40:24,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18335 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=55584, Invalid=92256, Unknown=0, NotChecked=0, Total=147840 [2018-07-25 08:40:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-07-25 08:40:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 387. [2018-07-25 08:40:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:40:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-25 08:40:24,633 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-25 08:40:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:24,633 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-25 08:40:24,633 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:40:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-25 08:40:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:40:24,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:24,635 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-25 08:40:24,635 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:24,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1697487761, now seen corresponding path program 191 times [2018-07-25 08:40:24,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:25,593 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 08:40:25,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:25,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:40:25,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:40:25,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:40:25,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18723, Invalid=19107, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:40:25,597 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 195 states. [2018-07-25 08:40:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:27,327 INFO L93 Difference]: Finished difference Result 392 states and 392 transitions. [2018-07-25 08:40:27,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:40:27,327 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 386 [2018-07-25 08:40:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:27,328 INFO L225 Difference]: With dead ends: 392 [2018-07-25 08:40:27,328 INFO L226 Difference]: Without dead ends: 390 [2018-07-25 08:40:27,337 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 08:40:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-07-25 08:40:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 389. [2018-07-25 08:40:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:40:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-25 08:40:27,346 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-25 08:40:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:27,347 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-25 08:40:27,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:40:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-25 08:40:27,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:40:27,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:27,348 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-25 08:40:27,349 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:27,349 INFO L82 PathProgramCache]: Analyzing trace with hash -801887461, now seen corresponding path program 192 times [2018-07-25 08:40:27,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:28,276 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 08:40:28,276 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:28,276 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:40:28,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:40:28,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:40:28,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18917, Invalid=19303, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:40:28,280 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 196 states. [2018-07-25 08:40:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:29,968 INFO L93 Difference]: Finished difference Result 394 states and 394 transitions. [2018-07-25 08:40:29,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:40:29,968 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 388 [2018-07-25 08:40:29,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:29,969 INFO L225 Difference]: With dead ends: 394 [2018-07-25 08:40:29,969 INFO L226 Difference]: Without dead ends: 392 [2018-07-25 08:40:29,974 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18720 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=56745, Invalid=94187, Unknown=0, NotChecked=0, Total=150932 [2018-07-25 08:40:29,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-07-25 08:40:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 391. [2018-07-25 08:40:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:40:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-25 08:40:29,983 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-25 08:40:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:29,983 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-25 08:40:29,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:40:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-25 08:40:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:40:29,984 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,984 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-25 08:40:29,984 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1814757339, now seen corresponding path program 193 times [2018-07-25 08:40:29,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,917 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 08:40:30,917 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:40:30,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:40:30,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:40:30,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19112, Invalid=19500, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:40:30,922 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 197 states. [2018-07-25 08:40:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,726 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2018-07-25 08:40:32,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:40:32,726 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 390 [2018-07-25 08:40:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,727 INFO L225 Difference]: With dead ends: 396 [2018-07-25 08:40:32,727 INFO L226 Difference]: Without dead ends: 394 [2018-07-25 08:40:32,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18914 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=57330, Invalid=95160, Unknown=0, NotChecked=0, Total=152490 [2018-07-25 08:40:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-07-25 08:40:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2018-07-25 08:40:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:40:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-25 08:40:32,739 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-25 08:40:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,739 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-25 08:40:32,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:40:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-25 08:40:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:40:32,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,741 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-25 08:40:32,741 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,741 INFO L82 PathProgramCache]: Analyzing trace with hash -225133905, now seen corresponding path program 194 times [2018-07-25 08:40:32,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,688 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 08:40:33,689 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:40:33,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:40:33,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:40:33,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19308, Invalid=19698, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:40:33,694 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 198 states. [2018-07-25 08:40:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,602 INFO L93 Difference]: Finished difference Result 398 states and 398 transitions. [2018-07-25 08:40:35,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:40:35,603 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 392 [2018-07-25 08:40:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,603 INFO L225 Difference]: With dead ends: 398 [2018-07-25 08:40:35,603 INFO L226 Difference]: Without dead ends: 396 [2018-07-25 08:40:35,606 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19109 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=57918, Invalid=96138, Unknown=0, NotChecked=0, Total=154056 [2018-07-25 08:40:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-07-25 08:40:35,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 395. [2018-07-25 08:40:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:40:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-25 08:40:35,615 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-25 08:40:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,615 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-25 08:40:35,615 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:40:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-25 08:40:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:40:35,616 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,616 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-25 08:40:35,616 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1605371207, now seen corresponding path program 195 times [2018-07-25 08:40:35,617 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,571 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 08:40:36,571 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:40:36,571 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:40:36,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:40:36,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19505, Invalid=19897, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:40:36,575 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 199 states. [2018-07-25 08:40:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,465 INFO L93 Difference]: Finished difference Result 400 states and 400 transitions. [2018-07-25 08:40:38,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:40:38,465 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 394 [2018-07-25 08:40:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,466 INFO L225 Difference]: With dead ends: 400 [2018-07-25 08:40:38,466 INFO L226 Difference]: Without dead ends: 398 [2018-07-25 08:40:38,473 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19305 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=58509, Invalid=97121, Unknown=0, NotChecked=0, Total=155630 [2018-07-25 08:40:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-07-25 08:40:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2018-07-25 08:40:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:40:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-25 08:40:38,481 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-25 08:40:38,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,481 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-25 08:40:38,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:40:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-25 08:40:38,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:40:38,483 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,483 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-25 08:40:38,483 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,483 INFO L82 PathProgramCache]: Analyzing trace with hash -868523965, now seen corresponding path program 196 times [2018-07-25 08:40:38,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,501 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 08:40:39,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:40:39,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:40:39,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:40:39,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19703, Invalid=20097, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:40:39,506 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 200 states. [2018-07-25 08:40:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,380 INFO L93 Difference]: Finished difference Result 402 states and 402 transitions. [2018-07-25 08:40:41,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:40:41,380 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 396 [2018-07-25 08:40:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,381 INFO L225 Difference]: With dead ends: 402 [2018-07-25 08:40:41,381 INFO L226 Difference]: Without dead ends: 400 [2018-07-25 08:40:41,387 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19502 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=59103, Invalid=98109, Unknown=0, NotChecked=0, Total=157212 [2018-07-25 08:40:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-07-25 08:40:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 399. [2018-07-25 08:40:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:40:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-25 08:40:41,396 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-25 08:40:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,396 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-25 08:40:41,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:40:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-25 08:40:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:40:41,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,397 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-25 08:40:41,397 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1427928243, now seen corresponding path program 197 times [2018-07-25 08:40:41,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,426 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 08:40:42,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:40:42,427 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:40:42,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:40:42,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19902, Invalid=20298, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:40:42,429 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 201 states. [2018-07-25 08:40:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:44,366 INFO L93 Difference]: Finished difference Result 404 states and 404 transitions. [2018-07-25 08:40:44,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:40:44,366 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 398 [2018-07-25 08:40:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:44,366 INFO L225 Difference]: With dead ends: 404 [2018-07-25 08:40:44,366 INFO L226 Difference]: Without dead ends: 402 [2018-07-25 08:40:44,373 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 397 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19700 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=59700, Invalid=99102, Unknown=0, NotChecked=0, Total=158802 [2018-07-25 08:40:44,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-07-25 08:40:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 401. [2018-07-25 08:40:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:40:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-25 08:40:44,381 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-25 08:40:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:44,381 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-25 08:40:44,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:40:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-25 08:40:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:40:44,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:44,383 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-25 08:40:44,383 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2144527401, now seen corresponding path program 198 times [2018-07-25 08:40:44,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:45,365 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 08:40:45,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:45,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:40:45,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:40:45,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:40:45,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20102, Invalid=20500, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:40:45,370 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 202 states. [2018-07-25 08:40:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:47,148 INFO L93 Difference]: Finished difference Result 406 states and 406 transitions. [2018-07-25 08:40:47,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:40:47,148 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 400 [2018-07-25 08:40:47,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:47,149 INFO L225 Difference]: With dead ends: 406 [2018-07-25 08:40:47,149 INFO L226 Difference]: Without dead ends: 404 [2018-07-25 08:40:47,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 399 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19899 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60300, Invalid=100100, Unknown=0, NotChecked=0, Total=160400 [2018-07-25 08:40:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-07-25 08:40:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 403. [2018-07-25 08:40:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:40:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-25 08:40:47,163 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-25 08:40:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:47,163 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-25 08:40:47,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:40:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-25 08:40:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:40:47,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:47,164 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-25 08:40:47,164 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:47,165 INFO L82 PathProgramCache]: Analyzing trace with hash 693416417, now seen corresponding path program 199 times [2018-07-25 08:40:47,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:48,173 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 08:40:48,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:48,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:40:48,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:40:48,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:40:48,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20303, Invalid=20703, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:40:48,178 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 203 states. [2018-07-25 08:40:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:50,020 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2018-07-25 08:40:50,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:40:50,020 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 402 [2018-07-25 08:40:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:50,021 INFO L225 Difference]: With dead ends: 408 [2018-07-25 08:40:50,021 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 08:40:50,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 401 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20099 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60903, Invalid=101103, Unknown=0, NotChecked=0, Total=162006 [2018-07-25 08:40:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 08:40:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2018-07-25 08:40:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:40:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-25 08:40:50,034 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-25 08:40:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:50,034 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-25 08:40:50,034 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:40:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-25 08:40:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:40:50,035 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:50,035 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-25 08:40:50,035 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash 653192555, now seen corresponding path program 200 times [2018-07-25 08:40:50,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:51,037 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 08:40:51,037 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:51,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:40:51,038 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:40:51,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:40:51,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20505, Invalid=20907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:40:51,042 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 204 states. [2018-07-25 08:40:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:53,057 INFO L93 Difference]: Finished difference Result 410 states and 410 transitions. [2018-07-25 08:40:53,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:40:53,058 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 404 [2018-07-25 08:40:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:53,058 INFO L225 Difference]: With dead ends: 410 [2018-07-25 08:40:53,058 INFO L226 Difference]: Without dead ends: 408 [2018-07-25 08:40:53,062 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20300 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=61509, Invalid=102111, Unknown=0, NotChecked=0, Total=163620 [2018-07-25 08:40:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-07-25 08:40:53,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 407. [2018-07-25 08:40:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:40:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-25 08:40:53,071 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-25 08:40:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:53,071 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-25 08:40:53,071 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:40:53,071 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-25 08:40:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:40:53,073 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:53,073 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-25 08:40:53,073 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:53,074 INFO L82 PathProgramCache]: Analyzing trace with hash 652766837, now seen corresponding path program 201 times [2018-07-25 08:40:53,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:54,115 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 08:40:54,115 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:54,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:40:54,116 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:40:54,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:40:54,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20708, Invalid=21112, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:40:54,120 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 205 states. [2018-07-25 08:40:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:56,136 INFO L93 Difference]: Finished difference Result 412 states and 412 transitions. [2018-07-25 08:40:56,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:40:56,136 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 406 [2018-07-25 08:40:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:56,137 INFO L225 Difference]: With dead ends: 412 [2018-07-25 08:40:56,137 INFO L226 Difference]: Without dead ends: 410 [2018-07-25 08:40:56,140 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20502 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=62118, Invalid=103124, Unknown=0, NotChecked=0, Total=165242 [2018-07-25 08:40:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-07-25 08:40:56,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 409. [2018-07-25 08:40:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:40:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-25 08:40:56,148 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-25 08:40:56,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:56,149 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-25 08:40:56,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:40:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-25 08:40:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:40:56,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:56,150 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-25 08:40:56,150 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:56,150 INFO L82 PathProgramCache]: Analyzing trace with hash 243651839, now seen corresponding path program 202 times [2018-07-25 08:40:56,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:57,177 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 08:40:57,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:57,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:40:57,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:40:57,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:40:57,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20912, Invalid=21318, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:40:57,186 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 206 states. [2018-07-25 08:40:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:59,282 INFO L93 Difference]: Finished difference Result 414 states and 414 transitions. [2018-07-25 08:40:59,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:40:59,282 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 408 [2018-07-25 08:40:59,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:59,283 INFO L225 Difference]: With dead ends: 414 [2018-07-25 08:40:59,283 INFO L226 Difference]: Without dead ends: 412 [2018-07-25 08:40:59,290 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 08:40:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2018-07-25 08:40:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2018-07-25 08:40:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:40:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-25 08:40:59,299 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-25 08:40:59,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:59,299 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-25 08:40:59,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:40:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-25 08:40:59,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:40:59,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:59,300 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-25 08:40:59,301 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:59,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2073837303, now seen corresponding path program 203 times [2018-07-25 08:40:59,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:00,404 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 08:41:00,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:00,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:41:00,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:41:00,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:41:00,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21117, Invalid=21525, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:41:00,409 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 207 states. [2018-07-25 08:41:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:02,478 INFO L93 Difference]: Finished difference Result 416 states and 416 transitions. [2018-07-25 08:41:02,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:41:02,479 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 410 [2018-07-25 08:41:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:02,479 INFO L225 Difference]: With dead ends: 416 [2018-07-25 08:41:02,479 INFO L226 Difference]: Without dead ends: 414 [2018-07-25 08:41:02,486 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 08:41:02,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-07-25 08:41:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 413. [2018-07-25 08:41:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:41:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-25 08:41:02,496 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-25 08:41:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:02,496 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-25 08:41:02,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:41:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-25 08:41:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:41:02,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:02,498 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-25 08:41:02,498 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:02,498 INFO L82 PathProgramCache]: Analyzing trace with hash -92876141, now seen corresponding path program 204 times [2018-07-25 08:41:02,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:03,593 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 08:41:03,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:03,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:41:03,595 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:41:03,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:41:03,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21323, Invalid=21733, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:41:03,599 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 208 states. [2018-07-25 08:41:05,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:05,680 INFO L93 Difference]: Finished difference Result 418 states and 418 transitions. [2018-07-25 08:41:05,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:41:05,680 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 412 [2018-07-25 08:41:05,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:05,681 INFO L225 Difference]: With dead ends: 418 [2018-07-25 08:41:05,681 INFO L226 Difference]: Without dead ends: 416 [2018-07-25 08:41:05,688 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 08:41:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-07-25 08:41:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 415. [2018-07-25 08:41:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:41:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-25 08:41:05,699 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-25 08:41:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:05,699 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-25 08:41:05,699 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:41:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-25 08:41:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:41:05,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:05,700 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-25 08:41:05,700 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:05,700 INFO L82 PathProgramCache]: Analyzing trace with hash 940288413, now seen corresponding path program 205 times [2018-07-25 08:41:05,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:06,793 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 08:41:06,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:06,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:41:06,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:41:06,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:41:06,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21530, Invalid=21942, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:41:06,797 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 209 states. [2018-07-25 08:41:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:08,931 INFO L93 Difference]: Finished difference Result 420 states and 420 transitions. [2018-07-25 08:41:08,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:41:08,931 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 414 [2018-07-25 08:41:08,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:08,932 INFO L225 Difference]: With dead ends: 420 [2018-07-25 08:41:08,932 INFO L226 Difference]: Without dead ends: 418 [2018-07-25 08:41:08,939 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21320 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=64584, Invalid=107226, Unknown=0, NotChecked=0, Total=171810 [2018-07-25 08:41:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-07-25 08:41:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 417. [2018-07-25 08:41:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 08:41:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-07-25 08:41:08,948 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-07-25 08:41:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:08,948 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-07-25 08:41:08,948 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:41:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-07-25 08:41:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 08:41:08,949 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:08,950 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-07-25 08:41:08,950 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:08,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1673979431, now seen corresponding path program 206 times [2018-07-25 08:41:08,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:10,162 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 08:41:10,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:10,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:41:10,163 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:41:10,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:41:10,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21738, Invalid=22152, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:41:10,166 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 210 states. [2018-07-25 08:41:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:12,332 INFO L93 Difference]: Finished difference Result 422 states and 422 transitions. [2018-07-25 08:41:12,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:41:12,333 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 416 [2018-07-25 08:41:12,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:12,333 INFO L225 Difference]: With dead ends: 422 [2018-07-25 08:41:12,333 INFO L226 Difference]: Without dead ends: 420 [2018-07-25 08:41:12,340 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21527 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=65208, Invalid=108264, Unknown=0, NotChecked=0, Total=173472 [2018-07-25 08:41:12,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-07-25 08:41:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2018-07-25 08:41:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:41:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-07-25 08:41:12,349 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-07-25 08:41:12,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:12,350 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-07-25 08:41:12,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:41:12,350 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-07-25 08:41:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:41:12,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:12,351 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-07-25 08:41:12,351 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:12,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1918556111, now seen corresponding path program 207 times [2018-07-25 08:41:12,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:13,588 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 08:41:13,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:13,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:41:13,589 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:41:13,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:41:13,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21947, Invalid=22363, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:41:13,591 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 211 states. [2018-07-25 08:41:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:15,798 INFO L93 Difference]: Finished difference Result 424 states and 424 transitions. [2018-07-25 08:41:15,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:41:15,799 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 418 [2018-07-25 08:41:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:15,799 INFO L225 Difference]: With dead ends: 424 [2018-07-25 08:41:15,799 INFO L226 Difference]: Without dead ends: 422 [2018-07-25 08:41:15,806 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 08:41:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-07-25 08:41:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 421. [2018-07-25 08:41:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:41:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-07-25 08:41:15,815 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-07-25 08:41:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:15,815 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-07-25 08:41:15,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:41:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-07-25 08:41:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 08:41:15,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:15,817 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-07-25 08:41:15,817 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:15,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1191505989, now seen corresponding path program 208 times [2018-07-25 08:41:15,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:17,074 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 08:41:17,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:17,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:41:17,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:41:17,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:41:17,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22157, Invalid=22575, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:41:17,077 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 212 states. [2018-07-25 08:41:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:19,272 INFO L93 Difference]: Finished difference Result 426 states and 426 transitions. [2018-07-25 08:41:19,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:41:19,272 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 420 [2018-07-25 08:41:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:19,272 INFO L225 Difference]: With dead ends: 426 [2018-07-25 08:41:19,272 INFO L226 Difference]: Without dead ends: 424 [2018-07-25 08:41:19,279 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 08:41:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-07-25 08:41:19,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 423. [2018-07-25 08:41:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:41:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-07-25 08:41:19,288 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-07-25 08:41:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:19,289 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-07-25 08:41:19,289 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:41:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-07-25 08:41:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:41:19,290 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:19,290 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-07-25 08:41:19,290 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1718959301, now seen corresponding path program 209 times [2018-07-25 08:41:19,290 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:20,583 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 08:41:20,584 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:20,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:41:20,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:41:20,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:41:20,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22368, Invalid=22788, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:41:20,586 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 213 states. [2018-07-25 08:41:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:22,735 INFO L93 Difference]: Finished difference Result 428 states and 428 transitions. [2018-07-25 08:41:22,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:41:22,735 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 422 [2018-07-25 08:41:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:22,736 INFO L225 Difference]: With dead ends: 428 [2018-07-25 08:41:22,736 INFO L226 Difference]: Without dead ends: 426 [2018-07-25 08:41:22,743 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 08:41:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-07-25 08:41:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2018-07-25 08:41:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:41:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-07-25 08:41:22,753 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-07-25 08:41:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:22,753 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-07-25 08:41:22,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:41:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-07-25 08:41:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:41:22,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:22,754 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-07-25 08:41:22,754 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:22,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1642574001, now seen corresponding path program 210 times [2018-07-25 08:41:22,755 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:24,012 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 08:41:24,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:24,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:41:24,013 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:41:24,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:41:24,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22580, Invalid=23002, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:41:24,018 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 214 states. [2018-07-25 08:41:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:26,280 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2018-07-25 08:41:26,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:41:26,280 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 424 [2018-07-25 08:41:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:26,281 INFO L225 Difference]: With dead ends: 430 [2018-07-25 08:41:26,281 INFO L226 Difference]: Without dead ends: 428 [2018-07-25 08:41:26,287 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22365 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=67734, Invalid=112466, Unknown=0, NotChecked=0, Total=180200 [2018-07-25 08:41:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-07-25 08:41:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2018-07-25 08:41:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:41:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-07-25 08:41:26,297 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-07-25 08:41:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:26,297 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-07-25 08:41:26,297 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:41:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-07-25 08:41:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:41:26,298 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:26,298 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-07-25 08:41:26,299 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:26,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2034296665, now seen corresponding path program 211 times [2018-07-25 08:41:26,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:27,552 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 08:41:27,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:27,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:41:27,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:41:27,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:41:27,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22793, Invalid=23217, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:41:27,558 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 215 states. [2018-07-25 08:41:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:29,698 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2018-07-25 08:41:29,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:41:29,699 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 426 [2018-07-25 08:41:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:29,699 INFO L225 Difference]: With dead ends: 432 [2018-07-25 08:41:29,699 INFO L226 Difference]: Without dead ends: 430 [2018-07-25 08:41:29,706 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22577 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=68373, Invalid=113529, Unknown=0, NotChecked=0, Total=181902 [2018-07-25 08:41:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-07-25 08:41:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 429. [2018-07-25 08:41:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 08:41:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 429 transitions. [2018-07-25 08:41:29,715 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 429 transitions. Word has length 426 [2018-07-25 08:41:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:29,715 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 429 transitions. [2018-07-25 08:41:29,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:41:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 429 transitions. [2018-07-25 08:41:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 08:41:29,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:29,717 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1] [2018-07-25 08:41:29,717 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:29,717 INFO L82 PathProgramCache]: Analyzing trace with hash 748922083, now seen corresponding path program 212 times [2018-07-25 08:41:29,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:30,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:30,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:41:30,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:41:30,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:41:30,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23007, Invalid=23433, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:41:30,993 INFO L87 Difference]: Start difference. First operand 429 states and 429 transitions. Second operand 216 states. [2018-07-25 08:41:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:33,298 INFO L93 Difference]: Finished difference Result 434 states and 434 transitions. [2018-07-25 08:41:33,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:41:33,299 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 428 [2018-07-25 08:41:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:33,299 INFO L225 Difference]: With dead ends: 434 [2018-07-25 08:41:33,299 INFO L226 Difference]: Without dead ends: 432 [2018-07-25 08:41:33,305 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22790 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=69015, Invalid=114597, Unknown=0, NotChecked=0, Total=183612 [2018-07-25 08:41:33,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-07-25 08:41:33,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 431. [2018-07-25 08:41:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 08:41:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-07-25 08:41:33,315 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 428 [2018-07-25 08:41:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:33,315 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-07-25 08:41:33,315 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:41:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-07-25 08:41:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 08:41:33,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:33,317 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1, 1] [2018-07-25 08:41:33,317 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:33,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1840437267, now seen corresponding path program 213 times [2018-07-25 08:41:33,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:34,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:34,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:41:34,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:41:34,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:41:34,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23222, Invalid=23650, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:41:34,589 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 217 states. [2018-07-25 08:41:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:36,878 INFO L93 Difference]: Finished difference Result 436 states and 436 transitions. [2018-07-25 08:41:36,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:41:36,878 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 430 [2018-07-25 08:41:36,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:36,879 INFO L225 Difference]: With dead ends: 436 [2018-07-25 08:41:36,879 INFO L226 Difference]: Without dead ends: 434 Received shutdown request... [2018-07-25 08:41:36,887 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 429 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23004 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=69660, Invalid=115670, Unknown=0, NotChecked=0, Total=185330 [2018-07-25 08:41:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-25 08:41:36,888 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:41:36,893 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:41:36,893 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 08:41:36 BoogieIcfgContainer [2018-07-25 08:41:36,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:41:36,894 INFO L168 Benchmark]: Toolchain (without parser) took 260771.45 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 2.0 GB in the end (delta: -560.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-25 08:41:36,896 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:41:36,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:41:36,896 INFO L168 Benchmark]: Boogie Preprocessor took 22.12 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:41:36,897 INFO L168 Benchmark]: RCFGBuilder took 265.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:41:36,897 INFO L168 Benchmark]: TraceAbstraction took 260439.15 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 2.0 GB in the end (delta: -571.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-25 08:41:36,900 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.05 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 22.12 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 265.00 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 260439.15 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 2.0 GB in the end (delta: -571.0 MB). Peak memory consumption was 1.4 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 executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 260.3s OverallTime, 214 OverallIterations, 214 TraceHistogramMax, 164.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 643 SDtfs, 214 SDslu, 18710 SDs, 0 SdLazy, 47293 SolverSat, 46304 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46438 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 46224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1656146 ImplicationChecksByTransitivity, 190.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=431occurred in iteration=213, 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, 214 MinimizatonAttempts, 213 StatesRemovedByMinimization, 213 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 7.3s SatisfiabilityAnalysisTime, 75.2s InterpolantComputationTime, 46438 NumberOfCodeBlocks, 46438 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 46224 ConstructedInterpolants, 0 QuantifiedInterpolants, 39660834 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 214 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3266710 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_08-41-36-913.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_08-41-36-913.csv Completed graceful shutdown