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/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:40:30,078 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:40:30,081 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:40:30,094 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:40:30,094 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:40:30,096 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:40:30,097 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:40:30,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:40:30,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:40:30,102 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:40:30,103 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:40:30,103 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:40:30,104 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:40:30,105 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:40:30,107 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:40:30,107 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:40:30,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:40:30,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:40:30,112 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:40:30,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:40:30,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:40:30,117 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:40:30,120 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:40:30,120 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:40:30,120 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:40:30,121 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:40:30,122 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:40:30,123 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:40:30,124 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:40:30,125 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:40:30,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:40:30,126 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:40:30,126 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:40:30,127 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:40:30,128 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:40:30,128 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:40:30,129 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:40:30,143 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:40:30,143 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:40:30,144 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:40:30,144 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:40:30,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:40:30,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:40:30,145 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:40:30,145 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:40:30,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:40:30,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:40:30,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:40:30,240 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:40:30,241 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:40:30,242 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl [2018-07-25 08:40:30,242 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl' [2018-07-25 08:40:30,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:40:30,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:40:30,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:40:30,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:40:30,301 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:40:30,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:40:30,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:40:30,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:40:30,343 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:40:30,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:40:30,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:40:30,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:40:30,367 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:40:30,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/1) ... [2018-07-25 08:40:30,453 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-25 08:40:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:40:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:40:30,625 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:40:30,627 INFO L202 PluginConnector]: Adding new model functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:40:30 BoogieIcfgContainer [2018-07-25 08:40:30,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:40:30,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:40:30,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:40:30,633 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:40:30,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:30" (1/2) ... [2018-07-25 08:40:30,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfdd3d3 and model type functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:40:30, skipping insertion in model container [2018-07-25 08:40:30,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:40:30" (2/2) ... [2018-07-25 08:40:30,638 INFO L112 eAbstractionObserver]: Analyzing ICFG functions1.i_3.bplTransformedIcfg_BEv2_8.bpl [2018-07-25 08:40:30,649 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:40:30,659 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:40:30,715 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:40:30,716 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:40:30,717 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:40:30,717 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:40:30,717 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:40:30,717 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:40:30,718 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:40:30,718 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:40:30,718 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:40:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-07-25 08:40:30,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:40:30,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,750 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:40:30,755 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-07-25 08:40:30,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,856 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 08:40:30,858 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:40:30,858 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:40:30,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:40:30,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:40:30,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:40:30,877 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-07-25 08:40:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,904 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-07-25 08:40:30,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:40:30,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:40:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,918 INFO L225 Difference]: With dead ends: 8 [2018-07-25 08:40:30,918 INFO L226 Difference]: Without dead ends: 5 [2018-07-25 08:40:30,922 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:40:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-25 08:40:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-25 08:40:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-25 08:40:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-25 08:40:30,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-25 08:40:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,962 INFO L472 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-25 08:40:30,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:40:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-25 08:40:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:40:30,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,963 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:40:30,963 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,964 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-07-25 08:40:30,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:40:31,013 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:40:31,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:40:31,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:40:31,014 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-25 08:40:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,036 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-25 08:40:31,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:40:31,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:40:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,038 INFO L225 Difference]: With dead ends: 8 [2018-07-25 08:40:31,038 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 08:40:31,039 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:40:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 08:40:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 08:40:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:40:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:40:31,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-25 08:40:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,043 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:40:31,043 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:40:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:40:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:40:31,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,044 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:40:31,045 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,045 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-07-25 08:40:31,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:40:31,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:40:31,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:40:31,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:40:31,092 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-07-25 08:40:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,111 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:40:31,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:40:31,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-25 08:40:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,113 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:40:31,113 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:40:31,114 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:40:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:40:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:40:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:40:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:40:31,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-25 08:40:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,119 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:40:31,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:40:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:40:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:40:31,120 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,120 INFO L354 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-07-25 08:40:31,120 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,121 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-07-25 08:40:31,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,171 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 08:40:31,172 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,172 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:40:31,172 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:40:31,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:40:31,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:40:31,173 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 08:40:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,192 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-25 08:40:31,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:40:31,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 08:40:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,193 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:40:31,193 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:40:31,194 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:40:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:40:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:40:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:40:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:40:31,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-07-25 08:40:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,198 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:40:31,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:40:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:40:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:40:31,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,199 INFO L354 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-07-25 08:40:31,199 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-07-25 08:40:31,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,254 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:40:31,255 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:40:31,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:40:31,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:40:31,256 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-25 08:40:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,276 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:40:31,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:40:31,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 08:40:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,278 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:40:31,278 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:40:31,279 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:40:31,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:40:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:40:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:40:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:40:31,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-07-25 08:40:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,285 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:40:31,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:40:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:40:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:40:31,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,287 INFO L354 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-07-25 08:40:31,287 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,289 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-07-25 08:40:31,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:40:31,380 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:40:31,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:40:31,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:40:31,381 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-07-25 08:40:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,407 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:40:31,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:40:31,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-25 08:40:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,408 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:40:31,408 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:40:31,409 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:40:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:40:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:40:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:40:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:40:31,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-07-25 08:40:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,413 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:40:31,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:40:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:40:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:40:31,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,414 INFO L354 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-07-25 08:40:31,414 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-07-25 08:40:31,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:40:31,474 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:40:31,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:40:31,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:40:31,475 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-07-25 08:40:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,498 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:40:31,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:40:31,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-07-25 08:40:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,499 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:40:31,499 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:40:31,500 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:40:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:40:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:40:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:40:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:40:31,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-07-25 08:40:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,505 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:40:31,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:40:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:40:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:40:31,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,506 INFO L354 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-07-25 08:40:31,506 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,508 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-07-25 08:40:31,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:40:31,630 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:40:31,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:40:31,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:40:31,632 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-07-25 08:40:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,662 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 08:40:31,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:40:31,663 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-07-25 08:40:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,664 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:40:31,664 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:40:31,666 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:40:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:40:31,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:40:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:40:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:40:31,675 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-25 08:40:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,676 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:40:31,676 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:40:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:40:31,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:40:31,677 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,677 INFO L354 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-07-25 08:40:31,679 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,679 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-07-25 08:40:31,684 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:40:31,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:40:31,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:40:31,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:31,793 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-07-25 08:40:31,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,841 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:40:31,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:40:31,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-07-25 08:40:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,847 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:40:31,847 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:40:31,848 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:31,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:40:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:40:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:40:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:40:31,854 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-07-25 08:40:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,855 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:40:31,855 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:40:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:40:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:40:31,861 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,861 INFO L354 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-07-25 08:40:31,862 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,864 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-07-25 08:40:31,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:31,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:40:31,971 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:40:31,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:40:31,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:40:31,972 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-07-25 08:40:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,992 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 08:40:31,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:40:31,993 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-07-25 08:40:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,993 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:40:31,994 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:40:31,996 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:40:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:40:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:40:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:40:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:40:32,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-07-25 08:40:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,002 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:40:32,008 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:40:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:40:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:40:32,009 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,010 INFO L354 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-07-25 08:40:32,010 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-07-25 08:40:32,010 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:40:32,068 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:40:32,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:40:32,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:40:32,069 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-25 08:40:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,085 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:40:32,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:40:32,086 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-25 08:40:32,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,087 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:40:32,087 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:40:32,088 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:40:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:40:32,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:40:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:40:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:40:32,092 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-07-25 08:40:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,096 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:40:32,096 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:40:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:40:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:40:32,097 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,097 INFO L354 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-07-25 08:40:32,098 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-07-25 08:40:32,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:40:32,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:40:32,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:40:32,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:40:32,148 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-07-25 08:40:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,168 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 08:40:32,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:40:32,170 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-07-25 08:40:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,171 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:40:32,171 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:40:32,172 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:40:32,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:40:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:40:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:40:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:40:32,179 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-07-25 08:40:32,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,180 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:40:32,180 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:40:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:40:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:40:32,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,183 INFO L354 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-07-25 08:40:32,184 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,184 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-07-25 08:40:32,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:40:32,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:40:32,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:40:32,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:40:32,253 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-07-25 08:40:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,274 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:40:32,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:40:32,275 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-07-25 08:40:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,276 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:40:32,276 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:40:32,277 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:40:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:40:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:40:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:40:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:40:32,282 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-07-25 08:40:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,283 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:40:32,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:40:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:40:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:40:32,284 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,284 INFO L354 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-07-25 08:40:32,285 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,285 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-07-25 08:40:32,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,380 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:40:32,381 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:40:32,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:40:32,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:40:32,382 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-07-25 08:40:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,420 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-25 08:40:32,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:40:32,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-07-25 08:40:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,421 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:40:32,421 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:40:32,422 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:40:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:40:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:40:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:40:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:40:32,427 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-07-25 08:40:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,428 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:40:32,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:40:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:40:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:40:32,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,429 INFO L354 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-07-25 08:40:32,429 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-07-25 08:40:32,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:40:32,492 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:40:32,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:40:32,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:40:32,493 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-25 08:40:32,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,518 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:40:32,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:40:32,519 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-25 08:40:32,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,520 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:40:32,520 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:40:32,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:40:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:40:32,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:40:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:40:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:40:32,528 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-07-25 08:40:32,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,528 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:40:32,529 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:40:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:40:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:40:32,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,532 INFO L354 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-07-25 08:40:32,532 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-07-25 08:40:32,532 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:40:32,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:40:32,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:40:32,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:40:32,616 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-07-25 08:40:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,642 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 08:40:32,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:40:32,642 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-07-25 08:40:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,643 INFO L225 Difference]: With dead ends: 22 [2018-07-25 08:40:32,643 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:40:32,644 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:40:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:40:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:40:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:40:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:40:32,654 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-07-25 08:40:32,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,654 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:40:32,654 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:40:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:40:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:40:32,656 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,657 INFO L354 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-07-25 08:40:32,657 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,657 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-07-25 08:40:32,657 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,727 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:40:32,728 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:40:32,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:40:32,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:40:32,729 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-07-25 08:40:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,747 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:40:32,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:40:32,748 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-07-25 08:40:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,748 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:40:32,748 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:40:32,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:40:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:40:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:40:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:40:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:40:32,753 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-07-25 08:40:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,754 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:40:32,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:40:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:40:32,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:40:32,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,755 INFO L354 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-07-25 08:40:32,755 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,756 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-07-25 08:40:32,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:40:32,831 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:40:32,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:40:32,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:40:32,832 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-07-25 08:40:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,855 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-25 08:40:32,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:40:32,855 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-07-25 08:40:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,856 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:40:32,856 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:40:32,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:40:32,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:40:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:40:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:40:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:40:32,867 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-07-25 08:40:32,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,868 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:40:32,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:40:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:40:32,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:40:32,871 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,871 INFO L354 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-07-25 08:40:32,871 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-07-25 08:40:32,872 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:32,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:40:32,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:40:32,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:40:32,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:40:32,983 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-07-25 08:40:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,010 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:40:33,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:40:33,010 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-07-25 08:40:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,013 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:40:33,013 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:40:33,014 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:40:33,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:40:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:40:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:40:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:40:33,021 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-07-25 08:40:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,022 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:40:33,022 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:40:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:40:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:40:33,023 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,023 INFO L354 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-07-25 08:40:33,023 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,024 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-07-25 08:40:33,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:33,106 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,106 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:40:33,106 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:40:33,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:40:33,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:40:33,108 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-07-25 08:40:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,142 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-25 08:40:33,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:40:33,143 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-07-25 08:40:33,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,144 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:40:33,144 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:40:33,146 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:40:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:40:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:40:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:40:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:40:33,151 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-07-25 08:40:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,152 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:40:33,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:40:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:40:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:40:33,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,154 INFO L354 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-07-25 08:40:33,156 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,156 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-07-25 08:40:33,156 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,258 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 08:40:33,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:40:33,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:40:33,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:40:33,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:40:33,262 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-07-25 08:40:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,289 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:40:33,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:40:33,290 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-07-25 08:40:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,290 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:40:33,291 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:40:33,291 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:40:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:40:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:40:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:40:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:40:33,299 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-07-25 08:40:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,299 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:40:33,299 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:40:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:40:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:40:33,300 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,300 INFO L354 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-07-25 08:40:33,301 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,301 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-07-25 08:40:33,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:33,406 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,406 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:40:33,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:40:33,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:40:33,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:40:33,408 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-07-25 08:40:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,442 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-25 08:40:33,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:40:33,443 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-07-25 08:40:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,444 INFO L225 Difference]: With dead ends: 28 [2018-07-25 08:40:33,444 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:40:33,445 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:40:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:40:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:40:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:40:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:40:33,448 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-07-25 08:40:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,449 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:40:33,449 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:40:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:40:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:40:33,450 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,450 INFO L354 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-07-25 08:40:33,450 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-07-25 08:40:33,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:33,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:40:33,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:40:33,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:40:33,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:40:33,554 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-07-25 08:40:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,575 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:40:33,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:40:33,575 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-07-25 08:40:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,576 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:40:33,576 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:40:33,577 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:40:33,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:40:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:40:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:40:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:40:33,580 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-07-25 08:40:33,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,581 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:40:33,581 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:40:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:40:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:40:33,582 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,582 INFO L354 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-07-25 08:40:33,582 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,583 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-07-25 08:40:33,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:33,696 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:40:33,697 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:40:33,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:40:33,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:40:33,702 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-07-25 08:40:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,723 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-25 08:40:33,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:40:33,724 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-07-25 08:40:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,724 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:40:33,725 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:40:33,725 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:40:33,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:40:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:40:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:40:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:40:33,732 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-07-25 08:40:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,736 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:40:33,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:40:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:40:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:40:33,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,737 INFO L354 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-07-25 08:40:33,738 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-07-25 08:40:33,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:33,862 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:40:33,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:40:33,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:40:33,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:40:33,864 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-07-25 08:40:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,888 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:40:33,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:40:33,889 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-07-25 08:40:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,890 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:40:33,890 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:40:33,891 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:40:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:40:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:40:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:40:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:40:33,895 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-07-25 08:40:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,895 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:40:33,895 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:40:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:40:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:40:33,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,896 INFO L354 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-07-25 08:40:33,897 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-07-25 08:40:33,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:40:34,022 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:40:34,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:40:34,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:40:34,024 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-07-25 08:40:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,049 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-25 08:40:34,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:40:34,050 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-07-25 08:40:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,050 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:40:34,051 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:40:34,052 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:40:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:40:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:40:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:40:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:40:34,056 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-07-25 08:40:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,056 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:40:34,056 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:40:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:40:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:34,057 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,057 INFO L354 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-07-25 08:40:34,058 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,058 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-07-25 08:40:34,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:40:34,208 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:40:34,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:40:34,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:40:34,209 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-07-25 08:40:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,241 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:40:34,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:40:34,241 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-07-25 08:40:34,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,242 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:40:34,242 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:40:34,243 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:40:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:40:34,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:40:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:40:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:40:34,249 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-07-25 08:40:34,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,249 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:40:34,249 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:40:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:40:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:40:34,250 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,250 INFO L354 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-07-25 08:40:34,251 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,251 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-07-25 08:40:34,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,406 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:40:34,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:40:34,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:40:34,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:40:34,407 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-07-25 08:40:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,445 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-25 08:40:34,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:40:34,445 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-07-25 08:40:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,446 INFO L225 Difference]: With dead ends: 34 [2018-07-25 08:40:34,446 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:40:34,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:40:34,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:40:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:40:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:40:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:40:34,458 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-07-25 08:40:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,458 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:40:34,458 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:40:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:40:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:40:34,459 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,459 INFO L354 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-07-25 08:40:34,459 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-07-25 08:40:34,460 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:40:34,623 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:40:34,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:40:34,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:40:34,624 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-07-25 08:40:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,656 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:40:34,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:40:34,657 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-07-25 08:40:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,658 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:40:34,658 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:40:34,662 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:40:34,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:40:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:40:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:40:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:40:34,670 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-07-25 08:40:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,670 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:40:34,670 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:40:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:40:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:40:34,671 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,671 INFO L354 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-07-25 08:40:34,672 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-07-25 08:40:34,672 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:34,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:40:34,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:40:34,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:40:34,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:40:34,900 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-07-25 08:40:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,933 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-25 08:40:34,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:40:34,933 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-07-25 08:40:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,934 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:40:34,934 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:40:34,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:40:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:40:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:40:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:40:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:40:34,941 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-07-25 08:40:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,942 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 08:40:34,942 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:40:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:40:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:40:34,942 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,942 INFO L354 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-07-25 08:40:34,943 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-07-25 08:40:34,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:40:35,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:40:35,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:40:35,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:40:35,098 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-07-25 08:40:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,126 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:40:35,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:40:35,127 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-07-25 08:40:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,127 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:40:35,127 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:40:35,129 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:40:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:40:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:40:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:40:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:40:35,132 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-07-25 08:40:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,132 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:40:35,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:40:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:40:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:40:35,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,133 INFO L354 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-07-25 08:40:35,133 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-07-25 08:40:35,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,295 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:40:35,295 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:40:35,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:40:35,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:40:35,297 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-07-25 08:40:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,320 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-25 08:40:35,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:40:35,320 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-07-25 08:40:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,321 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:40:35,321 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:40:35,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:40:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:40:35,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:40:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:40:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:40:35,331 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-07-25 08:40:35,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,331 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:40:35,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:40:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:40:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:40:35,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,332 INFO L354 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-07-25 08:40:35,336 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,336 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-07-25 08:40:35,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:40:35,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:40:35,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:40:35,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:40:35,516 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-07-25 08:40:35,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,545 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:40:35,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:40:35,545 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-07-25 08:40:35,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,546 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:40:35,546 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:40:35,548 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:40:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:40:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:40:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:40:35,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:40:35,552 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-07-25 08:40:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,552 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:40:35,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:40:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:40:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:40:35,553 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,553 INFO L354 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-07-25 08:40:35,553 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-07-25 08:40:35,553 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:40:35,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:40:35,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:40:35,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:40:35,739 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-07-25 08:40:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,770 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-25 08:40:35,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:40:35,770 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-07-25 08:40:35,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,771 INFO L225 Difference]: With dead ends: 40 [2018-07-25 08:40:35,771 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:40:35,772 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:40:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:40:35,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:40:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:40:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:40:35,775 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-07-25 08:40:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,775 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:40:35,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:40:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:40:35,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:40:35,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,776 INFO L354 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-07-25 08:40:35,777 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,777 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-07-25 08:40:35,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:35,966 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:40:35,966 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:40:35,967 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:40:35,968 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:40:35,968 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-07-25 08:40:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,998 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:40:35,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:40:35,998 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-07-25 08:40:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,999 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:40:35,999 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:40:36,000 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:40:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:40:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:40:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:40:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:40:36,003 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-07-25 08:40:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,003 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:40:36,003 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:40:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:40:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:40:36,004 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,004 INFO L354 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-07-25 08:40:36,004 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-07-25 08:40:36,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:36,204 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:40:36,205 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:40:36,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:40:36,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:40:36,206 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-07-25 08:40:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,239 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-25 08:40:36,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:40:36,240 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-07-25 08:40:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,240 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:40:36,241 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:40:36,242 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:40:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:40:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:40:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:40:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:40:36,245 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-07-25 08:40:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,245 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:40:36,246 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:40:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:40:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:40:36,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,246 INFO L354 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-07-25 08:40:36,246 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,247 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-07-25 08:40:36,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:36,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:40:36,459 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:40:36,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:40:36,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:40:36,460 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-07-25 08:40:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,484 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:40:36,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:40:36,484 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-07-25 08:40:36,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,485 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:40:36,485 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:40:36,486 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:40:36,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:40:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:40:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:40:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:40:36,489 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-07-25 08:40:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,489 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:40:36,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:40:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:40:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:40:36,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,490 INFO L354 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-07-25 08:40:36,490 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-07-25 08:40:36,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:36,685 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:40:36,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:40:36,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:40:36,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:40:36,687 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-07-25 08:40:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,717 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-25 08:40:36,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:40:36,717 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-07-25 08:40:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,718 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:40:36,718 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:40:36,719 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:40:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:40:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:40:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:40:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:40:36,723 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-07-25 08:40:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,723 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:40:36,723 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:40:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:40:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:40:36,724 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,724 INFO L354 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-07-25 08:40:36,724 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-07-25 08:40:36,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:36,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:40:36,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:40:36,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:40:36,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:40:36,935 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-07-25 08:40:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,968 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:40:36,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:40:36,968 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-07-25 08:40:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,969 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:40:36,969 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:40:36,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:40:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:40:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:40:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:40:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:40:36,973 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-07-25 08:40:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,973 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:40:36,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:40:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:40:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:40:36,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,974 INFO L354 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-07-25 08:40:36,974 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-07-25 08:40:36,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:37,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:40:37,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:40:37,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:40:37,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:40:37,189 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-07-25 08:40:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,217 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-25 08:40:37,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:40:37,217 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-07-25 08:40:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,218 INFO L225 Difference]: With dead ends: 46 [2018-07-25 08:40:37,218 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:40:37,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:40:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:40:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:40:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:40:37,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:40:37,222 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-07-25 08:40:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,222 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:40:37,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:40:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:40:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:40:37,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,223 INFO L354 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-07-25 08:40:37,223 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-07-25 08:40:37,224 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:37,489 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:40:37,489 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:40:37,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:40:37,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:40:37,492 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-07-25 08:40:37,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,533 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:40:37,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:40:37,534 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-07-25 08:40:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,535 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:40:37,535 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:40:37,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:40:37,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:40:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:40:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:40:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:40:37,540 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-07-25 08:40:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,540 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:40:37,540 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:40:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:40:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:40:37,541 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,541 INFO L354 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-07-25 08:40:37,541 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-07-25 08:40:37,542 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:37,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:40:37,855 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:40:37,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:40:37,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:40:37,857 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-07-25 08:40:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,886 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-25 08:40:37,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:40:37,887 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-07-25 08:40:37,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,887 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:40:37,888 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:40:37,889 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:40:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:40:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:40:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:40:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:40:37,892 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-07-25 08:40:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,893 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:40:37,893 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:40:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:40:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:40:37,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,894 INFO L354 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-07-25 08:40:37,894 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,894 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-07-25 08:40:37,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:38,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:40:38,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:40:38,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:40:38,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:40:38,103 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-07-25 08:40:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,137 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:40:38,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:40:38,137 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-07-25 08:40:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,138 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:40:38,138 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:40:38,139 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:40:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:40:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:40:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:40:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:40:38,143 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-07-25 08:40:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,144 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:40:38,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:40:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:40:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:40:38,144 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,145 INFO L354 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-07-25 08:40:38,145 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-07-25 08:40:38,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:38,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:40:38,349 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:40:38,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:40:38,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:40:38,351 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-07-25 08:40:38,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,390 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-25 08:40:38,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:40:38,390 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-07-25 08:40:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,391 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:40:38,391 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:40:38,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:40:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:40:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:40:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:40:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:40:38,396 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-07-25 08:40:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,397 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:40:38,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:40:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:40:38,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:40:38,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,398 INFO L354 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-07-25 08:40:38,398 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-07-25 08:40:38,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:38,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:40:38,625 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:40:38,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:40:38,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:40:38,628 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-07-25 08:40:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,662 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:40:38,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:40:38,662 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-07-25 08:40:38,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,663 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:40:38,663 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:40:38,665 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:40:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:40:38,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:40:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:40:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:40:38,668 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-07-25 08:40:38,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,669 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:40:38,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:40:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:40:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:40:38,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,670 INFO L354 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-07-25 08:40:38,670 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-07-25 08:40:38,670 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:38,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:40:38,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:40:38,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:40:38,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:40:38,913 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-07-25 08:40:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,948 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-25 08:40:38,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:40:38,949 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-07-25 08:40:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,949 INFO L225 Difference]: With dead ends: 52 [2018-07-25 08:40:38,949 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:40:38,950 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:40:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:40:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:40:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:40:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:40:38,953 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-07-25 08:40:38,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,954 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:40:38,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:40:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:40:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:40:38,955 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,955 INFO L354 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-07-25 08:40:38,955 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-07-25 08:40:38,956 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:39,181 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,181 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:40:39,182 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:40:39,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:40:39,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:40:39,183 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-07-25 08:40:39,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,214 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:40:39,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:40:39,214 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-07-25 08:40:39,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,215 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:40:39,215 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:40:39,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:40:39,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:40:39,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:40:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:40:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:40:39,219 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-07-25 08:40:39,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,220 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:40:39,220 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:40:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:40:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:40:39,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,220 INFO L354 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-07-25 08:40:39,221 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-07-25 08:40:39,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:39,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:40:39,459 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:40:39,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:40:39,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:40:39,460 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-07-25 08:40:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,490 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-25 08:40:39,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:40:39,490 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-07-25 08:40:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,491 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:40:39,491 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:40:39,493 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:40:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:40:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:40:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:40:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:40:39,496 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-07-25 08:40:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,496 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:40:39,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:40:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:40:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:40:39,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,497 INFO L354 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-07-25 08:40:39,497 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,498 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-07-25 08:40:39,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:39,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:40:39,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:40:39,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:40:39,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:40:39,738 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-07-25 08:40:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,777 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:40:39,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:40:39,777 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-07-25 08:40:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,778 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:40:39,778 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:40:39,779 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:40:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:40:39,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:40:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:40:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:40:39,783 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-07-25 08:40:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,784 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:40:39,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:40:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:40:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:40:39,785 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,785 INFO L354 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-07-25 08:40:39,786 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-07-25 08:40:39,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:40,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:40:40,034 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:40:40,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:40:40,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:40:40,035 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-07-25 08:40:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,074 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-25 08:40:40,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:40:40,074 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-07-25 08:40:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,075 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:40:40,075 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:40:40,076 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:40:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:40:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:40:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:40:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:40:40,079 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-07-25 08:40:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,079 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:40:40,079 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:40:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:40:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:40:40,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,080 INFO L354 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-07-25 08:40:40,080 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,080 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-07-25 08:40:40,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:40,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,351 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:40:40,352 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:40:40,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:40:40,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:40:40,354 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-07-25 08:40:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,411 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:40:40,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:40:40,411 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-07-25 08:40:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,412 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:40:40,412 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:40:40,413 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:40:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:40:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:40:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:40:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:40:40,420 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-07-25 08:40:40,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,421 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:40:40,421 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:40:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:40:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:40:40,421 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,422 INFO L354 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-07-25 08:40:40,422 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,422 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-07-25 08:40:40,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:40,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:40:40,708 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:40:40,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:40:40,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:40:40,710 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-07-25 08:40:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,748 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-25 08:40:40,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:40:40,749 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-07-25 08:40:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,749 INFO L225 Difference]: With dead ends: 58 [2018-07-25 08:40:40,749 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:40:40,751 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:40:40,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:40:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:40:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:40:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:40:40,754 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-07-25 08:40:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,755 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:40:40,755 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:40:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:40:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:40:40,756 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,756 INFO L354 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-07-25 08:40:40,756 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-07-25 08:40:40,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:41,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:40:41,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:40:41,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:40:41,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:40:41,054 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-07-25 08:40:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,092 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:40:41,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:40:41,092 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-07-25 08:40:41,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,093 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:40:41,093 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:40:41,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:40:41,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:40:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:40:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:40:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:40:41,096 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-07-25 08:40:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,097 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:40:41,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:40:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:40:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:40:41,097 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,098 INFO L354 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-07-25 08:40:41,098 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-07-25 08:40:41,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:41,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:40:41,324 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:40:41,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:40:41,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:40:41,325 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-07-25 08:40:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,371 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-25 08:40:41,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:40:41,372 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-07-25 08:40:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,372 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:40:41,373 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:40:41,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:40:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:40:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:40:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:40:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:40:41,378 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-07-25 08:40:41,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,378 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:40:41,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:40:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:40:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:40:41,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,379 INFO L354 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-07-25 08:40:41,379 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-07-25 08:40:41,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:41,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:40:41,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:40:41,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:40:41,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:40:41,630 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-07-25 08:40:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,677 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:40:41,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:40:41,677 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-07-25 08:40:41,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,678 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:40:41,678 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:40:41,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:40:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:40:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:40:41,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:40:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:40:41,682 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-07-25 08:40:41,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,683 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:40:41,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:40:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:40:41,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:40:41,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,684 INFO L354 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-07-25 08:40:41,684 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,684 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-07-25 08:40:41,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:41,946 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:40:41,946 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:40:41,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:40:41,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:40:41,948 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-07-25 08:40:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,988 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-25 08:40:41,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:40:41,989 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-07-25 08:40:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,989 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:40:41,990 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:40:41,991 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:40:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:40:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:40:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:40:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:40:41,993 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-07-25 08:40:41,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,994 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:40:41,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:40:41,994 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:40:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:40:41,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,995 INFO L354 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-07-25 08:40:41,995 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-07-25 08:40:41,996 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:42,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:40:42,264 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:40:42,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:40:42,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:40:42,266 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-07-25 08:40:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:42,324 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:40:42,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:40:42,324 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-07-25 08:40:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:42,325 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:40:42,325 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:40:42,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:40:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:40:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:40:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:40:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:40:42,331 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-07-25 08:40:42,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:42,331 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:40:42,331 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:40:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:40:42,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:40:42,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:42,332 INFO L354 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-07-25 08:40:42,333 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:42,333 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-07-25 08:40:42,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:42,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:40:42,619 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:40:42,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:40:42,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:40:42,621 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-07-25 08:40:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:42,674 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-25 08:40:42,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:40:42,674 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-07-25 08:40:42,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:42,675 INFO L225 Difference]: With dead ends: 64 [2018-07-25 08:40:42,675 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:40:42,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:40:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:40:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:40:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:40:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:40:42,679 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-07-25 08:40:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:42,679 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:40:42,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:40:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:40:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:40:42,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:42,680 INFO L354 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-07-25 08:40:42,680 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-07-25 08:40:42,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:42,955 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:40:42,956 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:40:42,957 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:40:42,957 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:40:42,958 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-07-25 08:40:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,008 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:40:43,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:40:43,009 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-07-25 08:40:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,009 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:40:43,010 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:40:43,011 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:40:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:40:43,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:40:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:40:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:40:43,014 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-07-25 08:40:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:43,015 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:40:43,015 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:40:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:40:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:40:43,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:43,016 INFO L354 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-07-25 08:40:43,016 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:43,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-07-25 08:40:43,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:43,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:43,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:40:43,312 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:40:43,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:40:43,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:40:43,314 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-07-25 08:40:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,368 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-25 08:40:43,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:40:43,368 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-07-25 08:40:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,369 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:40:43,369 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:40:43,370 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:40:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:40:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:40:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:40:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:40:43,374 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-07-25 08:40:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:43,374 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:40:43,375 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:40:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:40:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:40:43,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:43,375 INFO L354 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-07-25 08:40:43,376 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:43,376 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-07-25 08:40:43,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:43,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:43,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:40:43,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:40:43,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:40:43,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:40:43,723 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-07-25 08:40:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,778 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:40:43,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:40:43,779 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-07-25 08:40:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,779 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:40:43,779 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:40:43,781 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:40:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:40:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:40:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:40:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:40:43,785 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-07-25 08:40:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:43,785 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:40:43,785 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:40:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:40:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:40:43,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:43,786 INFO L354 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-07-25 08:40:43,787 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:43,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-07-25 08:40:43,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:44,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:44,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:40:44,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:40:44,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:40:44,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:40:44,195 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-07-25 08:40:44,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:44,277 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-25 08:40:44,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:40:44,278 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-07-25 08:40:44,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:44,278 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:40:44,279 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:40:44,280 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:40:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:40:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:40:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:40:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:40:44,283 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-07-25 08:40:44,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:44,284 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:40:44,284 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:40:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:40:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:40:44,285 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:44,285 INFO L354 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-07-25 08:40:44,285 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:44,286 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-07-25 08:40:44,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:44,581 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:44,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:40:44,582 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:40:44,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:40:44,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:40:44,585 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-07-25 08:40:44,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:44,655 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:40:44,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:40:44,655 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-07-25 08:40:44,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:44,656 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:40:44,656 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:40:44,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:40:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:40:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:40:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:40:44,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:40:44,661 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-07-25 08:40:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:44,661 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:40:44,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:40:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:40:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:40:44,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:44,662 INFO L354 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-07-25 08:40:44,662 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:44,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-07-25 08:40:44,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:44,971 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:44,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:40:44,972 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:40:44,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:40:44,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:40:44,974 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-07-25 08:40:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:45,029 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-25 08:40:45,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:40:45,029 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-07-25 08:40:45,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:45,030 INFO L225 Difference]: With dead ends: 70 [2018-07-25 08:40:45,030 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:40:45,033 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:40:45,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:40:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:40:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:40:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:40:45,037 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-07-25 08:40:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:45,038 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:40:45,038 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:40:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:40:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:40:45,039 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:45,039 INFO L354 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-07-25 08:40:45,039 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:45,040 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-07-25 08:40:45,040 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:45,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:45,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:40:45,369 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:40:45,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:40:45,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:40:45,371 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-07-25 08:40:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:45,436 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:40:45,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:40:45,436 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-07-25 08:40:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:45,437 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:40:45,437 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:40:45,439 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:40:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:40:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:40:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:40:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:40:45,442 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-07-25 08:40:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:45,443 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:40:45,443 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:40:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:40:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:40:45,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:45,444 INFO L354 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-07-25 08:40:45,444 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-07-25 08:40:45,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:45,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:45,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:40:45,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:40:45,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:40:45,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:40:45,783 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-07-25 08:40:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:45,853 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-25 08:40:45,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:40:45,853 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-07-25 08:40:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:45,854 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:40:45,854 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:40:45,855 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:40:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:40:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:40:45,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:40:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:40:45,859 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-07-25 08:40:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:45,859 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:40:45,860 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:40:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:40:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:40:45,862 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:45,862 INFO L354 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-07-25 08:40:45,862 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:45,862 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-07-25 08:40:45,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:46,205 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:46,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:40:46,206 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:40:46,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:40:46,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:40:46,208 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-07-25 08:40:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:46,261 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:40:46,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:40:46,261 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-07-25 08:40:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:46,262 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:40:46,262 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:40:46,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:40:46,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:40:46,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:40:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:40:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:40:46,267 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-07-25 08:40:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:46,267 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:40:46,268 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:40:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:40:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:40:46,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:46,269 INFO L354 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-07-25 08:40:46,269 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:46,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-07-25 08:40:46,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:46,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:46,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:40:46,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:40:46,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:40:46,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:40:46,627 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-07-25 08:40:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:46,674 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-25 08:40:46,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:40:46,674 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-07-25 08:40:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:46,675 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:40:46,675 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:40:46,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:40:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:40:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:40:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:40:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:40:46,680 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-07-25 08:40:46,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:46,681 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:40:46,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:40:46,681 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:40:46,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:40:46,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:46,682 INFO L354 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-07-25 08:40:46,682 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:46,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-07-25 08:40:46,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:47,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:47,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:40:47,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:40:47,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:40:47,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:40:47,066 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-07-25 08:40:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:47,175 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:40:47,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:40:47,175 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-07-25 08:40:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:47,176 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:40:47,176 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:40:47,178 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:40:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:40:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:40:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:40:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:40:47,181 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-07-25 08:40:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:47,182 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:40:47,182 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:40:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:40:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:40:47,182 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:47,183 INFO L354 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-07-25 08:40:47,183 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:47,183 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-07-25 08:40:47,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:47,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:47,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:40:47,532 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:40:47,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:40:47,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:40:47,535 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-07-25 08:40:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:47,607 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-25 08:40:47,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:40:47,608 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-07-25 08:40:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:47,609 INFO L225 Difference]: With dead ends: 76 [2018-07-25 08:40:47,609 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:40:47,610 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:40:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:40:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:40:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:40:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:40:47,614 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-07-25 08:40:47,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:47,614 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:40:47,614 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:40:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:40:47,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:40:47,615 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:47,615 INFO L354 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-07-25 08:40:47,615 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:47,616 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-07-25 08:40:47,616 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:47,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:47,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:40:47,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:40:47,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:40:47,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:40:47,972 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-07-25 08:40:48,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:48,055 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:40:48,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:40:48,055 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-07-25 08:40:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:48,056 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:40:48,056 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:40:48,058 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:40:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:40:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:40:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:40:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:40:48,061 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-07-25 08:40:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:48,061 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:40:48,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:40:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:40:48,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:40:48,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:48,062 INFO L354 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-07-25 08:40:48,063 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:48,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-07-25 08:40:48,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:48,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:48,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:40:48,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:40:48,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:40:48,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:40:48,424 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-07-25 08:40:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:48,507 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-25 08:40:48,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:40:48,507 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-07-25 08:40:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:48,508 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:40:48,508 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:40:48,510 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:40:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:40:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:40:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:40:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:40:48,513 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-07-25 08:40:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:48,514 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:40:48,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:40:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:40:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:40:48,515 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:48,515 INFO L354 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-07-25 08:40:48,515 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:48,515 INFO L82 PathProgramCache]: Analyzing trace with hash 881630595, now seen corresponding path program 72 times [2018-07-25 08:40:48,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:48,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:48,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:40:48,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:40:48,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:40:48,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:40:48,860 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-07-25 08:40:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:48,944 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:40:48,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:40:48,945 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-07-25 08:40:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:48,946 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:40:48,946 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:40:48,947 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:40:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:40:48,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:40:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:40:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:40:48,951 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-07-25 08:40:48,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:48,951 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:40:48,951 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:40:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:40:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:40:48,952 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:48,952 INFO L354 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-07-25 08:40:48,953 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:48,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1560746476, now seen corresponding path program 73 times [2018-07-25 08:40:48,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:49,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:49,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:40:49,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:40:49,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:40:49,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:40:49,309 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-07-25 08:40:49,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:49,402 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-25 08:40:49,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:40:49,403 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-07-25 08:40:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:49,403 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:40:49,404 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:40:49,405 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:40:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:40:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:40:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:40:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:40:49,408 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-07-25 08:40:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:49,409 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:40:49,409 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:40:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:40:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:40:49,409 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:49,410 INFO L354 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-07-25 08:40:49,410 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:49,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1138502307, now seen corresponding path program 74 times [2018-07-25 08:40:49,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:49,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:49,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:40:49,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:40:49,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:40:49,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:40:49,775 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-07-25 08:40:49,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:49,864 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:40:49,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:40:49,865 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-07-25 08:40:49,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:49,866 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:40:49,866 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:40:49,867 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:40:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:40:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:40:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:40:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:40:49,870 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-07-25 08:40:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:49,871 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:40:49,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:40:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:40:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:40:49,872 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:49,872 INFO L354 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-07-25 08:40:49,872 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:49,872 INFO L82 PathProgramCache]: Analyzing trace with hash 933834956, now seen corresponding path program 75 times [2018-07-25 08:40:49,872 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:50,327 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:50,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:40:50,328 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:40:50,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:40:50,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:40:50,330 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-07-25 08:40:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:50,421 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-25 08:40:50,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:40:50,421 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-07-25 08:40:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:50,422 INFO L225 Difference]: With dead ends: 82 [2018-07-25 08:40:50,422 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:40:50,423 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:40:50,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:40:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:40:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:40:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:40:50,427 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-07-25 08:40:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:50,428 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:40:50,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:40:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:40:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:40:50,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:50,429 INFO L354 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-07-25 08:40:50,429 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1115885629, now seen corresponding path program 76 times [2018-07-25 08:40:50,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:50,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:50,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:40:50,833 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:40:50,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:40:50,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:40:50,835 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-07-25 08:40:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:50,908 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:40:50,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:40:50,908 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-07-25 08:40:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:50,909 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:40:50,909 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:40:50,910 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:40:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:40:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:40:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:40:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:40:50,914 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-07-25 08:40:50,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:50,914 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:40:50,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:40:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:40:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:40:50,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:50,915 INFO L354 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-07-25 08:40:50,915 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:50,916 INFO L82 PathProgramCache]: Analyzing trace with hash -232714324, now seen corresponding path program 77 times [2018-07-25 08:40:50,916 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:51,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:51,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:40:51,260 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:40:51,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:40:51,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:40:51,263 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-07-25 08:40:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:51,315 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-25 08:40:51,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:40:51,315 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-07-25 08:40:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:51,316 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:40:51,316 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:40:51,317 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:40:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:40:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:40:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:40:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:40:51,321 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-07-25 08:40:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:51,321 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:40:51,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:40:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:40:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:40:51,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:51,322 INFO L354 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-07-25 08:40:51,323 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1375792355, now seen corresponding path program 78 times [2018-07-25 08:40:51,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:51,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:51,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:40:51,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:40:51,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:40:51,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:40:51,678 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-07-25 08:40:51,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:51,759 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:40:51,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:40:51,759 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-07-25 08:40:51,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:51,760 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:40:51,760 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:40:51,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:40:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:40:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:40:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:40:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:40:51,765 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-07-25 08:40:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:51,765 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:40:51,765 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:40:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:40:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:40:51,766 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:51,766 INFO L354 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-07-25 08:40:51,766 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:51,767 INFO L82 PathProgramCache]: Analyzing trace with hash -300108148, now seen corresponding path program 79 times [2018-07-25 08:40:51,767 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:52,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:52,134 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:40:52,134 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:40:52,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:40:52,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:40:52,136 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-07-25 08:40:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:52,238 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-25 08:40:52,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:40:52,239 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-07-25 08:40:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:52,240 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:40:52,240 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:40:52,241 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:40:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:40:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:40:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:40:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:40:52,244 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-07-25 08:40:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:52,244 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:40:52,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:40:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:40:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:40:52,245 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:52,245 INFO L354 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-07-25 08:40:52,246 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:52,246 INFO L82 PathProgramCache]: Analyzing trace with hash -713416189, now seen corresponding path program 80 times [2018-07-25 08:40:52,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:52,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:52,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:40:52,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:40:52,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:40:52,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:40:52,613 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-07-25 08:40:52,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:52,697 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:40:52,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:40:52,697 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-07-25 08:40:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:52,698 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:40:52,698 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:40:52,699 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:40:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:40:52,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:40:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:40:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:40:52,703 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-07-25 08:40:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:52,703 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:40:52,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:40:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:40:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:40:52,704 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:52,705 INFO L354 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-07-25 08:40:52,705 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:52,705 INFO L82 PathProgramCache]: Analyzing trace with hash -641063572, now seen corresponding path program 81 times [2018-07-25 08:40:52,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:53,077 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:53,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:40:53,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:40:53,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:40:53,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:40:53,080 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-07-25 08:40:53,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:53,140 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-25 08:40:53,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:40:53,141 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-07-25 08:40:53,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:53,142 INFO L225 Difference]: With dead ends: 88 [2018-07-25 08:40:53,142 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:40:53,143 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:40:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:40:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:40:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:40:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:40:53,146 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-07-25 08:40:53,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:53,147 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:40:53,147 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:40:53,147 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:40:53,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:40:53,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:53,148 INFO L354 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-07-25 08:40:53,148 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:53,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1601867555, now seen corresponding path program 82 times [2018-07-25 08:40:53,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:53,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:53,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:40:53,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:40:53,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:40:53,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:40:53,561 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-07-25 08:40:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:53,675 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:40:53,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:40:53,676 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-07-25 08:40:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:53,676 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:40:53,677 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:40:53,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:40:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:40:53,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:40:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:40:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:40:53,681 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-07-25 08:40:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:53,681 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:40:53,682 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:40:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:40:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:40:53,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:53,683 INFO L354 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-07-25 08:40:53,683 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:53,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1881711540, now seen corresponding path program 83 times [2018-07-25 08:40:53,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:54,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:54,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:40:54,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:40:54,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:40:54,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:40:54,038 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-07-25 08:40:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:54,096 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-25 08:40:54,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:40:54,096 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-07-25 08:40:54,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:54,097 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:40:54,097 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:40:54,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:40:54,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:40:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:40:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:40:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:40:54,102 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-07-25 08:40:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:54,102 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:40:54,102 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:40:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:40:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:40:54,103 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:54,103 INFO L354 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-07-25 08:40:54,103 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1796486211, now seen corresponding path program 84 times [2018-07-25 08:40:54,104 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:54,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:54,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:40:54,478 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:40:54,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:40:54,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:40:54,481 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-07-25 08:40:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:54,596 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:40:54,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:40:54,596 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-07-25 08:40:54,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:54,597 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:40:54,597 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:40:54,599 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:40:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:40:54,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:40:54,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:40:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:40:54,604 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-07-25 08:40:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:54,605 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:40:54,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:40:54,605 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:40:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:40:54,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:54,606 INFO L354 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-07-25 08:40:54,606 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:54,607 INFO L82 PathProgramCache]: Analyzing trace with hash -143500500, now seen corresponding path program 85 times [2018-07-25 08:40:54,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:55,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:55,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:40:55,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:40:55,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:40:55,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:40:55,055 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-07-25 08:40:55,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:55,133 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-25 08:40:55,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:40:55,133 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-07-25 08:40:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:55,134 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:40:55,134 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:40:55,136 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:40:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:40:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:40:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:40:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:40:55,140 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-07-25 08:40:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:55,140 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:40:55,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:40:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:40:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:40:55,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:55,141 INFO L354 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-07-25 08:40:55,142 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash -153546397, now seen corresponding path program 86 times [2018-07-25 08:40:55,142 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:55,554 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:55,554 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:40:55,554 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:40:55,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:40:55,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:40:55,557 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-07-25 08:40:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:55,680 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:40:55,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:40:55,681 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-07-25 08:40:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:55,682 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:40:55,682 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:40:55,683 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:40:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:40:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:40:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:40:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:40:55,687 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-07-25 08:40:55,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:55,687 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:40:55,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:40:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:40:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:40:55,688 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:55,688 INFO L354 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-07-25 08:40:55,689 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash -464969204, now seen corresponding path program 87 times [2018-07-25 08:40:55,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:56,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:56,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:40:56,125 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:40:56,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:40:56,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:40:56,128 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-07-25 08:40:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:56,186 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-25 08:40:56,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:40:56,186 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-07-25 08:40:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:56,187 INFO L225 Difference]: With dead ends: 94 [2018-07-25 08:40:56,187 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:40:56,188 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:40:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:40:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:40:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:40:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:40:56,192 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-07-25 08:40:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:56,192 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:40:56,192 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:40:56,192 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:40:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:40:56,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:56,193 INFO L354 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-07-25 08:40:56,194 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:56,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1529141629, now seen corresponding path program 88 times [2018-07-25 08:40:56,194 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 08:40:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:56,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:56,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:40:56,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:40:56,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:40:56,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:40:56,717 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-07-25 08:40:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:56,856 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:40:56,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:40:56,856 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-07-25 08:40:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:56,857 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:40:56,858 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:40:56,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:40:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:40:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:40:56,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:40:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:40:56,864 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-07-25 08:40:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:56,864 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:40:56,865 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:40:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:40:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:40:56,866 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:56,866 INFO L354 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-07-25 08:40:56,866 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash -158748436, now seen corresponding path program 89 times [2018-07-25 08:40:56,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:57,376 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:57,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:40:57,377 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:40:57,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:40:57,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:40:57,379 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-07-25 08:40:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:57,486 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-25 08:40:57,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:40:57,486 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-07-25 08:40:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:57,487 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:40:57,487 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:40:57,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:40:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:40:57,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:40:57,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:40:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:40:57,492 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-07-25 08:40:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:57,493 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:40:57,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:40:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:40:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:40:57,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:57,494 INFO L354 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-07-25 08:40:57,494 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:57,494 INFO L82 PathProgramCache]: Analyzing trace with hash -626232413, now seen corresponding path program 90 times [2018-07-25 08:40:57,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:57,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:57,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:40:57,888 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:40:57,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:40:57,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:40:57,890 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-07-25 08:40:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:57,958 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:40:57,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:40:57,959 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-07-25 08:40:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:57,959 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:40:57,960 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:40:57,961 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:40:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:40:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:40:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:40:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:40:57,965 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-07-25 08:40:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:57,965 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:40:57,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:40:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:40:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:40:57,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:57,967 INFO L354 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-07-25 08:40:57,967 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:57,967 INFO L82 PathProgramCache]: Analyzing trace with hash 2061633484, now seen corresponding path program 91 times [2018-07-25 08:40:57,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:58,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:58,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:40:58,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:40:58,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:40:58,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:40:58,424 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-07-25 08:40:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:58,565 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-25 08:40:58,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:40:58,566 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-07-25 08:40:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:58,567 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:40:58,567 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:40:58,569 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:40:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:40:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:40:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:40:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:40:58,572 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-07-25 08:40:58,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:58,573 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:40:58,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:40:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:40:58,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:40:58,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:58,574 INFO L354 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-07-25 08:40:58,576 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:58,577 INFO L82 PathProgramCache]: Analyzing trace with hash -513869629, now seen corresponding path program 92 times [2018-07-25 08:40:58,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:58,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:58,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:40:58,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:40:58,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:40:58,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:40:58,994 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-07-25 08:40:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:59,146 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:40:59,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:40:59,146 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-07-25 08:40:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:59,147 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:40:59,147 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:40:59,148 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:40:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:40:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:40:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:40:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:40:59,151 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-07-25 08:40:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:59,152 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:40:59,152 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:40:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:40:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:40:59,153 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:59,153 INFO L354 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-07-25 08:40:59,153 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1249912492, now seen corresponding path program 93 times [2018-07-25 08:40:59,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:59,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:59,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:40:59,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:40:59,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:40:59,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:40:59,600 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-07-25 08:40:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:59,702 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-25 08:40:59,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:40:59,703 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-07-25 08:40:59,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:59,703 INFO L225 Difference]: With dead ends: 100 [2018-07-25 08:40:59,704 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:40:59,704 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:40:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:40:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:40:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:40:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:40:59,710 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-07-25 08:40:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:59,710 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:40:59,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:40:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:40:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:40:59,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:59,712 INFO L354 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-07-25 08:40:59,712 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:59,712 INFO L82 PathProgramCache]: Analyzing trace with hash 92583395, now seen corresponding path program 94 times [2018-07-25 08:40:59,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:00,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:00,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:41:00,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:41:00,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:41:00,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:41:00,114 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-07-25 08:41:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:00,185 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:41:00,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:41:00,186 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-07-25 08:41:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:00,186 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:41:00,187 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:41:00,188 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:41:00,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:41:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:41:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:41:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:41:00,192 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-07-25 08:41:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:00,192 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:41:00,193 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:41:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:41:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:41:00,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:00,194 INFO L354 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-07-25 08:41:00,194 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:00,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1424880244, now seen corresponding path program 95 times [2018-07-25 08:41:00,194 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:00,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:00,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:41:00,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:41:00,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:41:00,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:41:00,622 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-07-25 08:41:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:00,690 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-25 08:41:00,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:41:00,690 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-07-25 08:41:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:00,692 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:41:00,692 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:41:00,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:41:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:41:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:41:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:41:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:41:00,696 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-07-25 08:41:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:00,697 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:41:00,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:41:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:41:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:41:00,702 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:00,702 INFO L354 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-07-25 08:41:00,702 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1221612797, now seen corresponding path program 96 times [2018-07-25 08:41:00,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:01,079 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:01,079 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:41:01,079 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:41:01,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:41:01,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:41:01,081 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-07-25 08:41:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:01,167 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:41:01,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:41:01,167 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-07-25 08:41:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:01,168 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:41:01,168 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:41:01,169 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:41:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:41:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:41:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:41:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:41:01,172 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-07-25 08:41:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:01,173 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:41:01,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:41:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:41:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:41:01,173 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:01,174 INFO L354 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-07-25 08:41:01,174 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:01,174 INFO L82 PathProgramCache]: Analyzing trace with hash 784710764, now seen corresponding path program 97 times [2018-07-25 08:41:01,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:01,608 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:01,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:41:01,609 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:41:01,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:41:01,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:41:01,611 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-07-25 08:41:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:01,706 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-25 08:41:01,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:41:01,706 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-07-25 08:41:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:01,707 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:41:01,707 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:41:01,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:41:01,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:41:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:41:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:41:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:41:01,711 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-07-25 08:41:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:01,712 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:41:01,712 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:41:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:41:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:41:01,712 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:01,713 INFO L354 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-07-25 08:41:01,713 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1443768285, now seen corresponding path program 98 times [2018-07-25 08:41:01,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:02,161 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:02,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:41:02,162 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:41:02,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:41:02,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:41:02,164 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-07-25 08:41:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:02,272 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:41:02,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:41:02,273 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-07-25 08:41:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:02,274 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:41:02,274 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:41:02,275 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:41:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:41:02,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:41:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:41:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:41:02,278 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-07-25 08:41:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:02,278 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:41:02,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:41:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:41:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:41:02,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:02,279 INFO L354 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-07-25 08:41:02,280 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:02,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1807142068, now seen corresponding path program 99 times [2018-07-25 08:41:02,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:02,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:02,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:41:02,682 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:41:02,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:41:02,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:41:02,684 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-07-25 08:41:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:02,781 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-25 08:41:02,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:41:02,781 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-07-25 08:41:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:02,782 INFO L225 Difference]: With dead ends: 106 [2018-07-25 08:41:02,782 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:41:02,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:41:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:41:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:41:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:41:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:41:02,786 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-07-25 08:41:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:02,787 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:41:02,787 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:41:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:41:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:41:02,788 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:02,788 INFO L354 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-07-25 08:41:02,788 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:02,788 INFO L82 PathProgramCache]: Analyzing trace with hash -186827453, now seen corresponding path program 100 times [2018-07-25 08:41:02,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:03,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:03,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:41:03,164 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:41:03,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:41:03,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:41:03,166 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-07-25 08:41:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:03,253 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:41:03,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:41:03,253 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-07-25 08:41:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:03,254 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:41:03,254 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:41:03,255 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:41:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:41:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:41:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:41:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:41:03,263 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-07-25 08:41:03,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:03,263 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:41:03,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:41:03,263 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:41:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:41:03,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:03,264 INFO L354 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-07-25 08:41:03,264 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1496681940, now seen corresponding path program 101 times [2018-07-25 08:41:03,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:03,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:03,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:41:03,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:41:03,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:41:03,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:41:03,816 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-07-25 08:41:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:03,915 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-25 08:41:03,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:41:03,916 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-07-25 08:41:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:03,917 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:41:03,917 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:41:03,919 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:41:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:41:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:41:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:41:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:41:03,923 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-07-25 08:41:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:03,923 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:41:03,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:41:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:41:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:41:03,924 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:03,924 INFO L354 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-07-25 08:41:03,924 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:03,925 INFO L82 PathProgramCache]: Analyzing trace with hash 847501923, now seen corresponding path program 102 times [2018-07-25 08:41:03,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:04,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:04,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:41:04,283 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:41:04,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:41:04,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:41:04,284 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-07-25 08:41:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:04,395 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:41:04,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:41:04,396 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-07-25 08:41:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:04,397 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:41:04,397 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:41:04,398 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:41:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:41:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:41:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:41:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:41:04,401 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-07-25 08:41:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:04,401 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:41:04,401 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:41:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:41:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:41:04,402 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:04,402 INFO L354 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-07-25 08:41:04,403 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:04,403 INFO L82 PathProgramCache]: Analyzing trace with hash 502757644, now seen corresponding path program 103 times [2018-07-25 08:41:04,403 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:04,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:04,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:41:04,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:41:04,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:41:04,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:41:04,842 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-07-25 08:41:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:04,961 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-25 08:41:04,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:41:04,961 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-07-25 08:41:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:04,962 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:41:04,962 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:41:04,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:41:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:41:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:41:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:41:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:41:04,966 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-07-25 08:41:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:04,966 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:41:04,966 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:41:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:41:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:41:04,967 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:04,967 INFO L354 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-07-25 08:41:04,967 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1594380413, now seen corresponding path program 104 times [2018-07-25 08:41:04,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:05,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:05,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:41:05,317 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:41:05,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:41:05,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:41:05,319 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-07-25 08:41:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:05,447 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:41:05,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:41:05,447 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-07-25 08:41:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:05,448 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:41:05,448 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:41:05,449 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:41:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:41:05,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:41:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:41:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:41:05,452 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-07-25 08:41:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:05,453 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:41:05,453 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:41:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:41:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:41:05,454 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:05,454 INFO L354 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-07-25 08:41:05,454 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:05,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2113816556, now seen corresponding path program 105 times [2018-07-25 08:41:05,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:05,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:05,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:41:05,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:41:05,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:41:05,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:41:05,840 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-07-25 08:41:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:05,899 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-25 08:41:05,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:41:05,899 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-07-25 08:41:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:05,900 INFO L225 Difference]: With dead ends: 112 [2018-07-25 08:41:05,900 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:41:05,901 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:41:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:41:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:41:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:41:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:41:05,904 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-07-25 08:41:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:05,904 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:41:05,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:41:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:41:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:41:05,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:05,905 INFO L354 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-07-25 08:41:05,905 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:05,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1103805603, now seen corresponding path program 106 times [2018-07-25 08:41:05,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:06,268 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:06,268 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:41:06,269 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:41:06,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:41:06,270 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:41:06,270 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-07-25 08:41:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:06,379 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:41:06,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:41:06,379 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-07-25 08:41:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:06,380 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:41:06,380 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:41:06,381 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:41:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:41:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:41:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:41:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:41:06,385 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-07-25 08:41:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:06,385 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:41:06,385 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:41:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:41:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:41:06,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:06,386 INFO L354 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-07-25 08:41:06,386 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash -141762868, now seen corresponding path program 107 times [2018-07-25 08:41:06,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:06,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:06,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:41:06,787 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:41:06,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:41:06,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:41:06,789 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-07-25 08:41:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:06,932 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-25 08:41:06,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:41:06,932 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-07-25 08:41:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:06,933 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:41:06,933 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:41:06,933 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:41:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:41:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:41:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:41:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:41:06,937 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-07-25 08:41:06,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:06,938 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:41:06,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:41:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:41:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:41:06,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:06,939 INFO L354 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-07-25 08:41:06,939 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:06,939 INFO L82 PathProgramCache]: Analyzing trace with hash -99679805, now seen corresponding path program 108 times [2018-07-25 08:41:06,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:07,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:07,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:41:07,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:41:07,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:41:07,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:41:07,291 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-07-25 08:41:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:07,387 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:41:07,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:41:07,387 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-07-25 08:41:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:07,388 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:41:07,388 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:41:07,389 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:41:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:41:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:41:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:41:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:41:07,393 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-07-25 08:41:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:07,393 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:41:07,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:41:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:41:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:41:07,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:07,394 INFO L354 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-07-25 08:41:07,395 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:07,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1204895148, now seen corresponding path program 109 times [2018-07-25 08:41:07,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:07,778 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:07,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:41:07,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:41:07,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:41:07,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:41:07,780 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-07-25 08:41:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:07,939 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-25 08:41:07,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:41:07,940 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-07-25 08:41:07,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:07,941 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:41:07,941 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:41:07,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:41:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:41:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:41:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:41:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:41:07,946 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-07-25 08:41:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:07,946 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:41:07,946 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:41:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:41:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:41:07,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:07,947 INFO L354 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-07-25 08:41:07,948 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:07,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1302954269, now seen corresponding path program 110 times [2018-07-25 08:41:07,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:08,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:08,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:41:08,422 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:41:08,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:41:08,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:41:08,424 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-07-25 08:41:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:08,492 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:41:08,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:41:08,492 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-07-25 08:41:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:08,493 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:41:08,493 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:41:08,494 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:41:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:41:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:41:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:41:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:41:08,498 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-07-25 08:41:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:08,498 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:41:08,498 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:41:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:41:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:41:08,499 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:08,499 INFO L354 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-07-25 08:41:08,499 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:08,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1736874868, now seen corresponding path program 111 times [2018-07-25 08:41:08,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:08,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:08,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:41:08,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:41:08,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:41:08,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:41:08,927 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-07-25 08:41:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:09,087 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-25 08:41:09,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:41:09,088 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-07-25 08:41:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:09,088 INFO L225 Difference]: With dead ends: 118 [2018-07-25 08:41:09,088 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:41:09,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:41:09,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:41:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:41:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:41:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:41:09,093 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-07-25 08:41:09,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:09,093 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:41:09,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:41:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:41:09,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:41:09,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:09,094 INFO L354 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-07-25 08:41:09,094 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:09,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1991455747, now seen corresponding path program 112 times [2018-07-25 08:41:09,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:09,545 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:09,545 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:41:09,545 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:41:09,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:41:09,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:41:09,547 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-07-25 08:41:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:09,668 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:41:09,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:41:09,668 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-07-25 08:41:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:09,669 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:41:09,669 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:41:09,670 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:41:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:41:09,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:41:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:41:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:41:09,673 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-07-25 08:41:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:09,674 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:41:09,674 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:41:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:41:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:41:09,675 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:09,675 INFO L354 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-07-25 08:41:09,675 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1605587820, now seen corresponding path program 113 times [2018-07-25 08:41:09,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:10,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:10,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:41:10,159 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:41:10,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:41:10,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:41:10,161 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-07-25 08:41:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:10,292 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-25 08:41:10,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:41:10,292 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-07-25 08:41:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:10,293 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:41:10,293 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:41:10,294 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:41:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:41:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:41:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:41:10,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:41:10,298 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-07-25 08:41:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:10,298 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:41:10,298 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:41:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:41:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:41:10,299 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:10,299 INFO L354 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-07-25 08:41:10,299 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:10,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1766383325, now seen corresponding path program 114 times [2018-07-25 08:41:10,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:10,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:10,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:41:10,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:41:10,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:41:10,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:41:10,684 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-07-25 08:41:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:10,796 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:41:10,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:41:10,796 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-07-25 08:41:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:10,797 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:41:10,797 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:41:10,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:41:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:41:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:41:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:41:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:41:10,801 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-07-25 08:41:10,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:10,801 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:41:10,801 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:41:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:41:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:41:10,802 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:10,802 INFO L354 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-07-25 08:41:10,802 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:10,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1076693580, now seen corresponding path program 115 times [2018-07-25 08:41:10,803 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:11,203 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:11,203 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:41:11,203 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:41:11,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:41:11,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:41:11,205 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-07-25 08:41:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:11,406 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-25 08:41:11,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:41:11,406 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-07-25 08:41:11,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:11,407 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:41:11,407 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:41:11,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:41:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:41:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:41:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:41:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:41:11,412 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-07-25 08:41:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:11,413 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:41:11,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:41:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:41:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:41:11,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:11,414 INFO L354 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-07-25 08:41:11,414 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash -982235581, now seen corresponding path program 116 times [2018-07-25 08:41:11,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:11,858 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:11,858 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:41:11,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:41:11,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:41:11,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:41:11,860 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-07-25 08:41:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:12,014 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:41:12,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:41:12,014 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-07-25 08:41:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:12,015 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:41:12,015 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:41:12,016 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:41:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:41:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:41:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:41:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:41:12,018 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-07-25 08:41:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:12,019 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:41:12,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:41:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:41:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:41:12,019 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:12,019 INFO L354 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-07-25 08:41:12,020 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:12,020 INFO L82 PathProgramCache]: Analyzing trace with hash -384530132, now seen corresponding path program 117 times [2018-07-25 08:41:12,020 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:12,481 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:12,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:41:12,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:41:12,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:41:12,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:41:12,483 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-07-25 08:41:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:12,635 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-25 08:41:12,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:41:12,635 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-07-25 08:41:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:12,636 INFO L225 Difference]: With dead ends: 124 [2018-07-25 08:41:12,636 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:41:12,637 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:41:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:41:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:41:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:41:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:41:12,640 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-07-25 08:41:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:12,640 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:41:12,640 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:41:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:41:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:41:12,641 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:12,641 INFO L354 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-07-25 08:41:12,641 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:12,642 INFO L82 PathProgramCache]: Analyzing trace with hash 964469603, now seen corresponding path program 118 times [2018-07-25 08:41:12,642 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:13,115 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:13,115 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:41:13,115 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:41:13,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:41:13,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:41:13,117 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-07-25 08:41:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:13,270 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:41:13,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:41:13,270 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-07-25 08:41:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:13,271 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:41:13,271 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:41:13,272 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:41:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:41:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:41:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:41:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:41:13,275 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-07-25 08:41:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:13,275 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:41:13,275 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:41:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:41:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:41:13,276 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:13,276 INFO L354 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-07-25 08:41:13,276 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:13,276 INFO L82 PathProgramCache]: Analyzing trace with hash -166211572, now seen corresponding path program 119 times [2018-07-25 08:41:13,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:13,935 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 08:41:13,935 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:13,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:41:13,936 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:41:13,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:41:13,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:41:13,938 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-07-25 08:41:14,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:14,061 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-25 08:41:14,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:41:14,061 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-07-25 08:41:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:14,062 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:41:14,062 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:41:14,063 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:41:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:41:14,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:41:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:41:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:41:14,067 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-07-25 08:41:14,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:14,067 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:41:14,067 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:41:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:41:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:41:14,068 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:14,068 INFO L354 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-07-25 08:41:14,068 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash -857589629, now seen corresponding path program 120 times [2018-07-25 08:41:14,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:14,631 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:14,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:41:14,631 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:41:14,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:41:14,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:41:14,633 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-07-25 08:41:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:14,819 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:41:14,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:41:14,819 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-07-25 08:41:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:14,819 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:41:14,819 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:41:14,821 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:41:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:41:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:41:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:41:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:41:14,824 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-07-25 08:41:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:14,825 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:41:14,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:41:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:41:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:41:14,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:14,826 INFO L354 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-07-25 08:41:14,826 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash -815472916, now seen corresponding path program 121 times [2018-07-25 08:41:14,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:15,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:15,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:41:15,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:41:15,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:41:15,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:41:15,302 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-07-25 08:41:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:15,440 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-25 08:41:15,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:41:15,440 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-07-25 08:41:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:15,441 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:41:15,441 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:41:15,442 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:41:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:41:15,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:41:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:41:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:41:15,445 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-07-25 08:41:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:15,445 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:41:15,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:41:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:41:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:41:15,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:15,446 INFO L354 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-07-25 08:41:15,447 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:15,447 INFO L82 PathProgramCache]: Analyzing trace with hash 490145187, now seen corresponding path program 122 times [2018-07-25 08:41:15,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:15,850 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:15,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:41:15,851 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:41:15,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:41:15,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:41:15,852 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-07-25 08:41:16,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:16,027 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:41:16,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:41:16,028 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-07-25 08:41:16,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:16,029 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:41:16,029 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:41:16,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:41:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:41:16,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:41:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:41:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:41:16,033 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-07-25 08:41:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:16,033 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:41:16,034 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:41:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:41:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:41:16,034 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:16,034 INFO L354 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-07-25 08:41:16,035 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1985366580, now seen corresponding path program 123 times [2018-07-25 08:41:16,035 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:16,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:16,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:41:16,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:41:16,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:41:16,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:41:16,575 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-07-25 08:41:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:16,746 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-25 08:41:16,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:41:16,746 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-07-25 08:41:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:16,747 INFO L225 Difference]: With dead ends: 130 [2018-07-25 08:41:16,747 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:41:16,748 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:41:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:41:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:41:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:41:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:41:16,752 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-07-25 08:41:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:16,752 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:41:16,753 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:41:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:41:16,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:41:16,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:16,753 INFO L354 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-07-25 08:41:16,754 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:16,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1416820029, now seen corresponding path program 124 times [2018-07-25 08:41:16,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:17,311 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:17,311 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:41:17,311 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:41:17,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:41:17,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:41:17,314 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-07-25 08:41:17,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:17,548 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:41:17,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:41:17,549 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-07-25 08:41:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:17,549 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:41:17,549 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:41:17,551 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:41:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:41:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:41:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:41:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:41:17,553 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-07-25 08:41:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:17,554 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:41:17,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:41:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:41:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:41:17,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:17,554 INFO L354 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-07-25 08:41:17,555 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:17,555 INFO L82 PathProgramCache]: Analyzing trace with hash -971746132, now seen corresponding path program 125 times [2018-07-25 08:41:17,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:18,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:18,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:41:18,004 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:41:18,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:41:18,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:41:18,006 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-07-25 08:41:18,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:18,136 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-25 08:41:18,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:41:18,136 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-07-25 08:41:18,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:18,136 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:41:18,136 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:41:18,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:41:18,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:41:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:41:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:41:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:41:18,141 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-07-25 08:41:18,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:18,141 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:41:18,141 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:41:18,141 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:41:18,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:41:18,142 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:18,142 INFO L354 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-07-25 08:41:18,142 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:18,142 INFO L82 PathProgramCache]: Analyzing trace with hash -59357213, now seen corresponding path program 126 times [2018-07-25 08:41:18,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:18,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:18,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:41:18,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:41:18,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:41:18,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:41:18,613 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-07-25 08:41:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:18,831 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:41:18,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:41:18,831 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-07-25 08:41:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:18,832 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:41:18,832 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:41:18,833 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:41:18,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:41:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:41:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:41:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:41:18,837 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-07-25 08:41:18,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:18,837 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:41:18,837 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:41:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:41:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:41:18,838 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:18,838 INFO L354 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-07-25 08:41:18,838 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1840071796, now seen corresponding path program 127 times [2018-07-25 08:41:18,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:19,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:19,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:41:19,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:41:19,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:41:19,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:41:19,410 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-07-25 08:41:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:19,503 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-25 08:41:19,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:41:19,503 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-07-25 08:41:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:19,504 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:41:19,504 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:41:19,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:41:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:41:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:41:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:41:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:41:19,508 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-07-25 08:41:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:19,509 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:41:19,509 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:41:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:41:19,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:41:19,510 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:19,510 INFO L354 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-07-25 08:41:19,510 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:19,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1207649021, now seen corresponding path program 128 times [2018-07-25 08:41:19,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:20,054 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:20,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:41:20,055 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:41:20,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:41:20,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:41:20,057 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-07-25 08:41:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:20,254 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:41:20,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:41:20,254 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-07-25 08:41:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:20,254 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:41:20,255 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:41:20,256 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:41:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:41:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:41:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:41:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:41:20,259 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-07-25 08:41:20,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:20,259 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:41:20,260 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:41:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:41:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:41:20,260 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:20,260 INFO L354 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-07-25 08:41:20,261 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:20,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1217587820, now seen corresponding path program 129 times [2018-07-25 08:41:20,261 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:20,836 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:20,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:41:20,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:41:20,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:41:20,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:41:20,839 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-07-25 08:41:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:21,073 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-25 08:41:21,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:41:21,073 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-07-25 08:41:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:21,074 INFO L225 Difference]: With dead ends: 136 [2018-07-25 08:41:21,074 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:41:21,075 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:41:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:41:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:41:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:41:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:41:21,078 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-07-25 08:41:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:21,079 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:41:21,079 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:41:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:41:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:41:21,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:21,080 INFO L354 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-07-25 08:41:21,080 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:21,080 INFO L82 PathProgramCache]: Analyzing trace with hash -909481437, now seen corresponding path program 130 times [2018-07-25 08:41:21,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:21,628 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:21,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:41:21,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:41:21,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:41:21,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:41:21,631 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-07-25 08:41:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:21,858 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:41:21,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:41:21,859 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-07-25 08:41:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:21,859 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:41:21,859 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:41:21,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:41:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:41:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:41:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:41:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:41:21,863 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-07-25 08:41:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:21,863 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:41:21,863 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:41:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:41:21,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:41:21,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:21,864 INFO L354 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-07-25 08:41:21,864 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:21,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1870848332, now seen corresponding path program 131 times [2018-07-25 08:41:21,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:22,420 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:22,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:41:22,420 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:41:22,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:41:22,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:41:22,423 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-07-25 08:41:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:22,719 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-25 08:41:22,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:41:22,720 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-07-25 08:41:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:22,720 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:41:22,720 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:41:22,722 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:41:22,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:41:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:41:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:41:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:41:22,725 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-07-25 08:41:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:22,726 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:41:22,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:41:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:41:22,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:41:22,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:22,727 INFO L354 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-07-25 08:41:22,727 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:22,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2133242045, now seen corresponding path program 132 times [2018-07-25 08:41:22,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:23,210 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:23,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:41:23,210 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:41:23,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:41:23,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:41:23,212 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-07-25 08:41:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:23,345 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:41:23,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:41:23,345 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-07-25 08:41:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:23,345 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:41:23,346 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:41:23,347 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:41:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:41:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:41:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:41:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:41:23,350 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-07-25 08:41:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:23,350 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:41:23,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:41:23,350 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:41:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:41:23,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:23,351 INFO L354 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-07-25 08:41:23,351 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:23,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1705992148, now seen corresponding path program 133 times [2018-07-25 08:41:23,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:23,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:23,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:41:23,886 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:41:23,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:41:23,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:41:23,889 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-07-25 08:41:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:24,126 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-25 08:41:24,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:41:24,126 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-07-25 08:41:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:24,127 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:41:24,127 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:41:24,129 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:41:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:41:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:41:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:41:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:41:24,133 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-07-25 08:41:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:24,133 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:41:24,133 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:41:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:41:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:41:24,134 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:24,135 INFO L354 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-07-25 08:41:24,135 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1346147229, now seen corresponding path program 134 times [2018-07-25 08:41:24,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:24,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:24,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:41:24,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:41:24,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:41:24,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:41:24,790 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-07-25 08:41:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:25,005 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:41:25,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:41:25,005 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-07-25 08:41:25,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:25,005 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:41:25,006 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:41:25,007 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:41:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:41:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:41:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:41:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:41:25,010 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-07-25 08:41:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:25,010 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:41:25,010 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:41:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:41:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:41:25,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:25,011 INFO L354 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-07-25 08:41:25,011 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:25,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1219110668, now seen corresponding path program 135 times [2018-07-25 08:41:25,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:25,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:25,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:41:25,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:41:25,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:41:25,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:41:25,503 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-07-25 08:41:25,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:25,781 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-25 08:41:25,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:41:25,782 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-07-25 08:41:25,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:25,782 INFO L225 Difference]: With dead ends: 142 [2018-07-25 08:41:25,782 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:41:25,784 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:41:25,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:41:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:41:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:41:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:41:25,787 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-07-25 08:41:25,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:25,788 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:41:25,788 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:41:25,788 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:41:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:41:25,789 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:25,789 INFO L354 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-07-25 08:41:25,789 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:25,789 INFO L82 PathProgramCache]: Analyzing trace with hash -862273149, now seen corresponding path program 136 times [2018-07-25 08:41:25,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:26,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:26,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:41:26,407 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:41:26,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:41:26,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:41:26,410 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-07-25 08:41:26,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:26,519 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:41:26,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:41:26,519 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-07-25 08:41:26,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:26,520 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:41:26,520 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:41:26,521 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:41:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:41:26,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:41:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:41:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:41:26,523 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-07-25 08:41:26,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:26,524 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:41:26,524 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:41:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:41:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:41:26,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:26,524 INFO L354 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-07-25 08:41:26,524 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash -960662036, now seen corresponding path program 137 times [2018-07-25 08:41:26,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:27,113 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:27,113 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:41:27,113 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:41:27,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:41:27,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:41:27,116 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-07-25 08:41:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:27,427 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-25 08:41:27,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:41:27,427 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-07-25 08:41:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:27,428 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:41:27,428 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:41:27,429 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:41:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:41:27,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:41:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:41:27,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:41:27,431 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-07-25 08:41:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:27,431 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:41:27,432 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:41:27,432 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:41:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:41:27,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:27,432 INFO L354 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-07-25 08:41:27,432 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:27,432 INFO L82 PathProgramCache]: Analyzing trace with hash 284249763, now seen corresponding path program 138 times [2018-07-25 08:41:27,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:28,053 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:28,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:41:28,054 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:41:28,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:41:28,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:41:28,057 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-07-25 08:41:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:28,342 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:41:28,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:41:28,342 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-07-25 08:41:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:28,342 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:41:28,342 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:41:28,343 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:41:28,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:41:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:41:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:41:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:41:28,347 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-07-25 08:41:28,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:28,347 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:41:28,347 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:41:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:41:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:41:28,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:28,348 INFO L354 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-07-25 08:41:28,348 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:28,348 INFO L82 PathProgramCache]: Analyzing trace with hash 221809868, now seen corresponding path program 139 times [2018-07-25 08:41:28,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:28,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:28,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:41:28,943 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:41:28,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:41:28,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:41:28,946 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-07-25 08:41:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:29,299 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-25 08:41:29,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:41:29,299 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-07-25 08:41:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:29,300 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:41:29,300 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:41:29,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:41:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:41:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:41:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:41:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:41:29,305 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-07-25 08:41:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:29,305 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:41:29,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:41:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:41:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:41:29,306 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:29,306 INFO L354 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-07-25 08:41:29,306 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:29,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1713826877, now seen corresponding path program 140 times [2018-07-25 08:41:29,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:30,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:30,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:41:30,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:41:30,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:41:30,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:41:30,068 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-07-25 08:41:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:30,298 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:41:30,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:41:30,298 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-07-25 08:41:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:30,299 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:41:30,299 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:41:30,300 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:41:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:41:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:41:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:41:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:41:30,302 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-07-25 08:41:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:30,303 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:41:30,303 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:41:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:41:30,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:41:30,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:30,303 INFO L354 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-07-25 08:41:30,304 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:30,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1589023828, now seen corresponding path program 141 times [2018-07-25 08:41:30,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:30,880 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:30,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:41:30,880 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:41:30,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:41:30,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:41:30,883 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-07-25 08:41:31,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:31,017 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-25 08:41:31,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:41:31,018 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-07-25 08:41:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:31,018 INFO L225 Difference]: With dead ends: 148 [2018-07-25 08:41:31,018 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:41:31,020 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:41:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:41:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:41:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:41:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:41:31,023 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-07-25 08:41:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:31,023 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:41:31,023 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:41:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:41:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:41:31,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:31,025 INFO L354 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-07-25 08:41:31,025 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:31,026 INFO L82 PathProgramCache]: Analyzing trace with hash -2015096605, now seen corresponding path program 142 times [2018-07-25 08:41:31,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:31,855 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:31,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:41:31,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:41:31,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:41:31,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:41:31,859 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-07-25 08:41:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:32,139 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:41:32,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:41:32,140 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-07-25 08:41:32,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:32,140 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:41:32,140 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:41:32,141 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:41:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:41:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:41:32,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:41:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:41:32,144 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-07-25 08:41:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:32,144 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:41:32,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:41:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:41:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:41:32,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:32,145 INFO L354 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-07-25 08:41:32,146 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:32,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1956516492, now seen corresponding path program 143 times [2018-07-25 08:41:32,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:33,007 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:33,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:41:33,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:41:33,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:41:33,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:41:33,009 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-07-25 08:41:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:33,348 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-25 08:41:33,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:41:33,348 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-07-25 08:41:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:33,349 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:41:33,349 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:41:33,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:41:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:41:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:41:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:41:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:41:33,353 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-07-25 08:41:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:33,353 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:41:33,353 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:41:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:41:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:41:33,354 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:33,354 INFO L354 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-07-25 08:41:33,354 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:33,354 INFO L82 PathProgramCache]: Analyzing trace with hash 522470915, now seen corresponding path program 144 times [2018-07-25 08:41:33,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:33,966 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:33,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:41:33,967 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:41:33,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:41:33,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:41:33,969 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-07-25 08:41:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:34,239 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:41:34,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:41:34,239 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-07-25 08:41:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:34,240 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:41:34,240 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:41:34,241 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:41:34,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:41:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:41:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:41:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:41:34,244 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-07-25 08:41:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:34,244 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:41:34,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:41:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:41:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:41:34,245 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:34,245 INFO L354 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-07-25 08:41:34,245 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:34,245 INFO L82 PathProgramCache]: Analyzing trace with hash -983269012, now seen corresponding path program 145 times [2018-07-25 08:41:34,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:34,890 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:34,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:41:34,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:41:34,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:41:34,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:41:34,893 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-07-25 08:41:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:35,242 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-25 08:41:35,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:41:35,243 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-07-25 08:41:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:35,243 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:41:35,243 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:41:35,245 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:41:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:41:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:41:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:41:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:41:35,247 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-07-25 08:41:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:35,248 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:41:35,248 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:41:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:41:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:41:35,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:35,249 INFO L354 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-07-25 08:41:35,249 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:35,249 INFO L82 PathProgramCache]: Analyzing trace with hash -416566493, now seen corresponding path program 146 times [2018-07-25 08:41:35,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:35,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:35,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:41:35,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:41:35,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:41:35,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:41:35,933 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-07-25 08:41:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:36,320 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:41:36,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:41:36,321 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-07-25 08:41:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:36,321 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:41:36,321 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:41:36,323 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:41:36,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:41:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:41:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:41:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:41:36,326 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-07-25 08:41:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:36,326 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:41:36,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:41:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:41:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:41:36,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:36,328 INFO L354 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-07-25 08:41:36,328 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:36,328 INFO L82 PathProgramCache]: Analyzing trace with hash -28657588, now seen corresponding path program 147 times [2018-07-25 08:41:36,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:37,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:37,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:41:37,016 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:41:37,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:41:37,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:41:37,019 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-07-25 08:41:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:37,435 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-25 08:41:37,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:41:37,435 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-07-25 08:41:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:37,436 INFO L225 Difference]: With dead ends: 154 [2018-07-25 08:41:37,436 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:41:37,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:41:37,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:41:37,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:41:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:41:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:41:37,440 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-07-25 08:41:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:37,441 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:41:37,441 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:41:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:41:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:41:37,442 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:37,442 INFO L354 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-07-25 08:41:37,442 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:37,442 INFO L82 PathProgramCache]: Analyzing trace with hash -888383421, now seen corresponding path program 148 times [2018-07-25 08:41:37,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:38,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:38,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:41:38,222 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:41:38,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:41:38,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:41:38,225 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-07-25 08:41:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:38,673 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:41:38,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:41:38,673 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-07-25 08:41:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:38,674 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:41:38,674 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:41:38,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:41:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:41:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:41:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:41:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:41:38,679 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-07-25 08:41:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:38,679 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:41:38,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:41:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:41:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:41:38,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:38,680 INFO L354 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-07-25 08:41:38,680 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1770080468, now seen corresponding path program 149 times [2018-07-25 08:41:38,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:39,352 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:39,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:41:39,352 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:41:39,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:41:39,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:41:39,355 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-07-25 08:41:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:39,716 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-25 08:41:39,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:41:39,716 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-07-25 08:41:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:39,717 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:41:39,717 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:41:39,718 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:41:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:41:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:41:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:41:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:41:39,720 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-07-25 08:41:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:39,721 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:41:39,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:41:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:41:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:41:39,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:39,721 INFO L354 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-07-25 08:41:39,721 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:39,722 INFO L82 PathProgramCache]: Analyzing trace with hash 962082147, now seen corresponding path program 150 times [2018-07-25 08:41:39,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:40,357 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:40,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:41:40,357 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:41:40,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:41:40,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:41:40,360 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-07-25 08:41:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:40,830 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:41:40,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:41:40,830 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-07-25 08:41:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:40,831 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:41:40,831 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:41:40,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:41:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:41:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:41:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:41:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:41:40,834 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-07-25 08:41:40,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:40,835 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:41:40,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:41:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:41:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:41:40,835 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:40,835 INFO L354 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-07-25 08:41:40,835 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:40,836 INFO L82 PathProgramCache]: Analyzing trace with hash -240222708, now seen corresponding path program 151 times [2018-07-25 08:41:40,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:41,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:41,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:41:41,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:41:41,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:41:41,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:41:41,533 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-07-25 08:41:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:41,971 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-25 08:41:41,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:41:41,971 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-07-25 08:41:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:41,972 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:41:41,972 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:41:41,973 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:41:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:41:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:41:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:41:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:41:41,976 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-07-25 08:41:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:41,976 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:41:41,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:41:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:41:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:41:41,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:41,977 INFO L354 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-07-25 08:41:41,977 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:41,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1143032451, now seen corresponding path program 152 times [2018-07-25 08:41:41,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:42,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:42,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:41:42,735 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:41:42,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:41:42,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:41:42,737 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-07-25 08:41:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:43,183 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:41:43,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:41:43,183 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-07-25 08:41:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:43,184 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:41:43,184 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:41:43,185 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:41:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:41:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:41:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:41:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:41:43,188 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-07-25 08:41:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:43,188 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:41:43,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:41:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:41:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:41:43,189 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:43,189 INFO L354 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-07-25 08:41:43,189 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:43,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1074269420, now seen corresponding path program 153 times [2018-07-25 08:41:43,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:43,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:43,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:41:43,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:41:43,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:41:43,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:41:43,892 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-07-25 08:41:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:44,350 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-25 08:41:44,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:41:44,350 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-07-25 08:41:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:44,350 INFO L225 Difference]: With dead ends: 160 [2018-07-25 08:41:44,350 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:41:44,352 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:41:44,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:41:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:41:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:41:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:41:44,355 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-07-25 08:41:44,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:44,355 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:41:44,355 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:41:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:41:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:41:44,356 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:44,356 INFO L354 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-07-25 08:41:44,356 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:44,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1057384541, now seen corresponding path program 154 times [2018-07-25 08:41:44,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:45,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:45,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:41:45,058 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:41:45,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:41:45,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:41:45,061 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-07-25 08:41:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:45,551 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:41:45,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:41:45,552 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-07-25 08:41:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:45,552 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:41:45,552 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:41:45,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:41:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:41:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:41:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:41:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:41:45,556 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-07-25 08:41:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:45,556 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:41:45,556 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:41:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:41:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:41:45,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:45,557 INFO L354 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-07-25 08:41:45,557 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:45,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1580819404, now seen corresponding path program 155 times [2018-07-25 08:41:45,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:46,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:46,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:41:46,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:41:46,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:41:46,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:41:46,369 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-07-25 08:41:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:46,679 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-25 08:41:46,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:41:46,679 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-07-25 08:41:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:46,679 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:41:46,679 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:41:46,681 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:41:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:41:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:41:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:41:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:41:46,683 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-07-25 08:41:46,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:46,683 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:41:46,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:41:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:41:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:41:46,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:46,684 INFO L354 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-07-25 08:41:46,684 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:46,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1760763075, now seen corresponding path program 156 times [2018-07-25 08:41:46,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:47,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:47,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:41:47,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:41:47,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:41:47,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:41:47,455 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-07-25 08:41:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:47,617 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:41:47,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:41:47,617 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-07-25 08:41:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:47,618 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:41:47,618 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:41:47,619 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:41:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:41:47,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:41:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:41:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:41:47,621 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-07-25 08:41:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:47,621 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:41:47,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:41:47,621 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:41:47,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:41:47,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:47,622 INFO L354 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-07-25 08:41:47,622 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1250917716, now seen corresponding path program 157 times [2018-07-25 08:41:47,622 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:48,329 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:48,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:41:48,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:41:48,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:41:48,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:41:48,332 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-07-25 08:41:48,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,612 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-25 08:41:48,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:41:48,613 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-07-25 08:41:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,613 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:41:48,613 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:41:48,615 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:41:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:41:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:41:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:41:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:41:48,617 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-07-25 08:41:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,617 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:41:48,617 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:41:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:41:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:41:48,618 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,618 INFO L354 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-07-25 08:41:48,618 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,618 INFO L82 PathProgramCache]: Analyzing trace with hash -123741725, now seen corresponding path program 158 times [2018-07-25 08:41:48,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:41:49,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:41:49,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:41:49,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:41:49,411 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-07-25 08:41:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,935 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:41:49,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:41:49,935 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-07-25 08:41:49,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,935 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:41:49,936 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:41:49,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:41:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:41:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:41:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:41:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:41:49,940 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-07-25 08:41:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,940 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:41:49,940 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:41:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:41:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:41:49,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,941 INFO L354 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-07-25 08:41:49,941 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,941 INFO L82 PathProgramCache]: Analyzing trace with hash 458975628, now seen corresponding path program 159 times [2018-07-25 08:41:49,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:41:50,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:41:50,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:41:50,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:41:50,735 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-07-25 08:41:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,305 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-25 08:41:51,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:41:51,306 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-07-25 08:41:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,306 INFO L225 Difference]: With dead ends: 166 [2018-07-25 08:41:51,306 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:41:51,308 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:41:51,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:41:51,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:41:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:41:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:41:51,311 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-07-25 08:41:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,311 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:41:51,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:41:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:41:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:41:51,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,312 INFO L354 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-07-25 08:41:51,313 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1343344387, now seen corresponding path program 160 times [2018-07-25 08:41:51,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:52,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:52,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:41:52,093 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:41:52,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:41:52,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:41:52,097 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-07-25 08:41:52,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:52,517 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:41:52,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:41:52,517 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-07-25 08:41:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:52,517 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:41:52,517 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:41:52,518 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:41:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:41:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:41:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:41:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:41:52,521 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-07-25 08:41:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:52,521 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:41:52,521 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:41:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:41:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:41:52,522 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:52,522 INFO L354 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-07-25 08:41:52,522 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1305995156, now seen corresponding path program 161 times [2018-07-25 08:41:52,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:53,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:53,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:41:53,312 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:41:53,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:41:53,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:41:53,317 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-07-25 08:41:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:53,534 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-25 08:41:53,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:41:53,534 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-07-25 08:41:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:53,535 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:41:53,535 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:41:53,537 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:41:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:41:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:41:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:41:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:41:53,539 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-07-25 08:41:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:53,539 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:41:53,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:41:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:41:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:41:53,540 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:53,540 INFO L354 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-07-25 08:41:53,540 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:53,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1831142365, now seen corresponding path program 162 times [2018-07-25 08:41:53,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:54,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:54,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:41:54,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:41:54,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:41:54,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:41:54,406 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-07-25 08:41:54,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:54,781 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:41:54,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:41:54,781 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-07-25 08:41:54,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:54,782 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:41:54,782 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:41:54,783 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:41:54,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:41:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:41:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:41:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:41:54,785 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-07-25 08:41:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:54,786 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:41:54,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:41:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:41:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:41:54,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:54,787 INFO L354 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-07-25 08:41:54,787 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:54,787 INFO L82 PathProgramCache]: Analyzing trace with hash -930836660, now seen corresponding path program 163 times [2018-07-25 08:41:54,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:55,603 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:55,603 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:41:55,603 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:41:55,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:41:55,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:41:55,606 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-07-25 08:41:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:56,249 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-25 08:41:56,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:41:56,249 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-07-25 08:41:56,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:56,250 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:41:56,250 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:41:56,251 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:41:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:41:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:41:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:41:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:41:56,253 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-07-25 08:41:56,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:56,254 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:41:56,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:41:56,254 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:41:56,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:41:56,254 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:56,254 INFO L354 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-07-25 08:41:56,255 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:56,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1208836419, now seen corresponding path program 164 times [2018-07-25 08:41:56,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:57,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:57,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:41:57,047 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:41:57,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:41:57,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:41:57,050 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-07-25 08:41:57,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:57,537 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:41:57,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:41:57,537 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-07-25 08:41:57,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:57,538 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:41:57,538 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:41:57,540 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:41:57,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:41:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:41:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:41:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:41:57,543 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-07-25 08:41:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:57,543 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:41:57,543 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:41:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:41:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:41:57,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:57,544 INFO L354 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-07-25 08:41:57,544 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:57,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1180774868, now seen corresponding path program 165 times [2018-07-25 08:41:57,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:58,398 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:58,399 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:41:58,399 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:41:58,401 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:41:58,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:41:58,402 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-07-25 08:41:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:58,649 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-25 08:41:58,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:41:58,649 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-07-25 08:41:58,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:58,649 INFO L225 Difference]: With dead ends: 172 [2018-07-25 08:41:58,649 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:41:58,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:41:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:41:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:41:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:41:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:41:58,654 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-07-25 08:41:58,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:58,654 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:41:58,655 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:41:58,655 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:41:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:41:58,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:58,655 INFO L354 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-07-25 08:41:58,656 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:58,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2050686563, now seen corresponding path program 166 times [2018-07-25 08:41:58,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:59,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:59,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:41:59,501 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:41:59,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:41:59,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:41:59,504 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-07-25 08:42:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:00,231 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:42:00,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:42:00,231 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-07-25 08:42:00,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:00,231 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:42:00,231 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:42:00,233 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:42:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:42:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:42:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:42:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:42:00,236 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-07-25 08:42:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:00,236 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:42:00,236 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:42:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:42:00,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:42:00,237 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:00,237 INFO L354 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-07-25 08:42:00,238 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:00,238 INFO L82 PathProgramCache]: Analyzing trace with hash -853224180, now seen corresponding path program 167 times [2018-07-25 08:42:00,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:01,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:01,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:42:01,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:42:01,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:42:01,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:42:01,148 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-07-25 08:42:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:01,540 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-25 08:42:01,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:42:01,541 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-07-25 08:42:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:01,541 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:42:01,541 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:42:01,542 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:42:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:42:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:42:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:42:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:42:01,545 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-07-25 08:42:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:01,545 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:42:01,545 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:42:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:42:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:42:01,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:01,546 INFO L354 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-07-25 08:42:01,546 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:01,546 INFO L82 PathProgramCache]: Analyzing trace with hash -680143997, now seen corresponding path program 168 times [2018-07-25 08:42:01,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:02,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:02,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:42:02,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:42:02,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:42:02,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:42:02,378 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-07-25 08:42:02,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:02,689 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:42:02,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:42:02,689 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-07-25 08:42:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:02,690 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:42:02,690 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:42:02,692 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:42:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:42:02,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:42:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:42:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:42:02,694 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-07-25 08:42:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:02,694 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:42:02,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:42:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:42:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:42:02,695 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:02,695 INFO L354 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-07-25 08:42:02,695 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:02,695 INFO L82 PathProgramCache]: Analyzing trace with hash 390374380, now seen corresponding path program 169 times [2018-07-25 08:42:02,695 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:03,540 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:03,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:42:03,540 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:42:03,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:42:03,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:42:03,544 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-07-25 08:42:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:04,298 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-25 08:42:04,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:42:04,298 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-07-25 08:42:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:04,299 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:42:04,299 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:42:04,300 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:42:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:42:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:42:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:42:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:42:04,303 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-07-25 08:42:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:04,303 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:42:04,303 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:42:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:42:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:42:04,303 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:04,303 INFO L354 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-07-25 08:42:04,304 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:04,304 INFO L82 PathProgramCache]: Analyzing trace with hash -783294301, now seen corresponding path program 170 times [2018-07-25 08:42:04,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:05,126 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:05,126 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:42:05,126 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:42:05,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:42:05,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:42:05,131 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-07-25 08:42:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:05,393 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:42:05,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:42:05,394 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-07-25 08:42:05,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:05,394 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:42:05,394 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:42:05,396 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:42:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:42:05,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:42:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:42:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:42:05,399 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-07-25 08:42:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:05,399 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:42:05,399 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:42:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:42:05,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:42:05,400 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:05,400 INFO L354 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-07-25 08:42:05,400 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:05,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1487682252, now seen corresponding path program 171 times [2018-07-25 08:42:05,401 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:06,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:06,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:42:06,331 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:42:06,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:42:06,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:42:06,335 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-07-25 08:42:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:07,108 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-25 08:42:07,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:42:07,109 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-07-25 08:42:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:07,109 INFO L225 Difference]: With dead ends: 178 [2018-07-25 08:42:07,109 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:42:07,111 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:42:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:42:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:42:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:42:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:42:07,114 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-07-25 08:42:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:07,114 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:42:07,114 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:42:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:42:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:42:07,115 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:07,115 INFO L354 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-07-25 08:42:07,116 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:07,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1126488637, now seen corresponding path program 172 times [2018-07-25 08:42:07,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:08,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:08,029 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:42:08,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:42:08,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:42:08,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:42:08,032 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-07-25 08:42:08,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:08,532 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:42:08,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:42:08,532 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-07-25 08:42:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:08,533 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:42:08,533 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:42:08,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:42:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:42:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:42:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:42:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:42:08,537 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-07-25 08:42:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:08,538 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:42:08,538 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:42:08,538 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:42:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:42:08,538 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:08,539 INFO L354 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-07-25 08:42:08,539 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:08,539 INFO L82 PathProgramCache]: Analyzing trace with hash -561407572, now seen corresponding path program 173 times [2018-07-25 08:42:08,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:09,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:09,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:42:09,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:42:09,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:42:09,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:42:09,447 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-07-25 08:42:10,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:10,093 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-25 08:42:10,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:42:10,093 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-07-25 08:42:10,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:10,094 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:42:10,094 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:42:10,096 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:42:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:42:10,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:42:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:42:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:42:10,099 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-07-25 08:42:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:10,099 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:42:10,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:42:10,100 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:42:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:42:10,100 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:10,100 INFO L354 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-07-25 08:42:10,101 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:10,101 INFO L82 PathProgramCache]: Analyzing trace with hash -223763741, now seen corresponding path program 174 times [2018-07-25 08:42:10,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:11,078 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:11,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:42:11,079 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:42:11,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:42:11,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:42:11,081 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-07-25 08:42:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:11,672 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:42:11,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:42:11,672 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-07-25 08:42:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:11,673 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:42:11,673 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:42:11,674 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:42:11,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:42:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:42:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:42:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:42:11,676 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-07-25 08:42:11,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:11,677 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:42:11,677 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:42:11,677 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:42:11,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:42:11,677 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:11,677 INFO L354 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-07-25 08:42:11,677 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1653260428, now seen corresponding path program 175 times [2018-07-25 08:42:11,678 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:12,570 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:12,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:42:12,570 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:42:12,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:42:12,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:42:12,574 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-07-25 08:42:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:13,219 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-25 08:42:13,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:42:13,219 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-07-25 08:42:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:13,219 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:42:13,219 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:42:13,221 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:42:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:42:13,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:42:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:42:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:42:13,224 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-07-25 08:42:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:13,224 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:42:13,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:42:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:42:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:42:13,224 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:13,225 INFO L354 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-07-25 08:42:13,225 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash -288532477, now seen corresponding path program 176 times [2018-07-25 08:42:13,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:14,163 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:14,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:42:14,163 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:42:14,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:42:14,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:42:14,167 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-07-25 08:42:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:14,734 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:42:14,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:42:14,734 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-07-25 08:42:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:14,735 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:42:14,735 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:42:14,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:42:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:42:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:42:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:42:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:42:14,739 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-07-25 08:42:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:14,740 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:42:14,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:42:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:42:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:42:14,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:14,741 INFO L354 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-07-25 08:42:14,741 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:14,741 INFO L82 PathProgramCache]: Analyzing trace with hash -354570388, now seen corresponding path program 177 times [2018-07-25 08:42:14,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:15,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:15,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:42:15,770 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:42:15,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:42:15,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:42:15,772 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-07-25 08:42:16,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:16,379 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-25 08:42:16,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:42:16,379 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-07-25 08:42:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:16,380 INFO L225 Difference]: With dead ends: 184 [2018-07-25 08:42:16,380 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:42:16,381 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:42:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:42:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:42:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:42:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:42:16,384 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-07-25 08:42:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:16,384 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:42:16,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:42:16,385 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:42:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:42:16,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:16,385 INFO L354 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-07-25 08:42:16,386 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:16,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1893221667, now seen corresponding path program 178 times [2018-07-25 08:42:16,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:17,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:17,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:42:17,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:42:17,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:42:17,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:42:17,241 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-07-25 08:42:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:17,602 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:42:17,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:42:17,602 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-07-25 08:42:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:17,603 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:42:17,603 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:42:17,605 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:42:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:42:17,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:42:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:42:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:42:17,608 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-07-25 08:42:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:17,608 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:42:17,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:42:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:42:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:42:17,609 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:17,609 INFO L354 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-07-25 08:42:17,609 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:17,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1439668660, now seen corresponding path program 179 times [2018-07-25 08:42:17,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:18,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:18,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:42:18,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:42:18,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:42:18,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:42:18,588 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-07-25 08:42:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:19,554 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-25 08:42:19,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:42:19,554 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-07-25 08:42:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:19,555 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:42:19,555 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:42:19,557 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:42:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:42:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:42:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:42:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:42:19,560 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-07-25 08:42:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:19,560 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:42:19,561 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:42:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:42:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:42:19,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:19,561 INFO L354 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-07-25 08:42:19,562 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:19,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1680053693, now seen corresponding path program 180 times [2018-07-25 08:42:19,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:20,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:20,565 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:42:20,565 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:42:20,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:42:20,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:42:20,569 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-07-25 08:42:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:20,890 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:42:20,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:42:20,890 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-07-25 08:42:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:20,891 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:42:20,891 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:42:20,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:42:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:42:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:42:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:42:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:42:20,895 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-07-25 08:42:20,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:20,896 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:42:20,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:42:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:42:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:42:20,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:20,896 INFO L354 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-07-25 08:42:20,896 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:20,897 INFO L82 PathProgramCache]: Analyzing trace with hash -542055124, now seen corresponding path program 181 times [2018-07-25 08:42:20,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:21,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:21,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:42:21,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:42:21,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:42:21,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:42:21,939 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-07-25 08:42:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:22,752 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-25 08:42:22,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:42:22,752 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-07-25 08:42:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:22,752 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:42:22,753 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:42:22,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:42:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:42:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:42:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:42:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:42:22,757 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-07-25 08:42:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:22,757 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:42:22,757 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:42:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:42:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:42:22,758 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:22,758 INFO L354 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-07-25 08:42:22,758 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:22,758 INFO L82 PathProgramCache]: Analyzing trace with hash 376162147, now seen corresponding path program 182 times [2018-07-25 08:42:22,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:23,773 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:23,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:42:23,774 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:42:23,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:42:23,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:42:23,778 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-07-25 08:42:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:24,705 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:42:24,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:42:24,705 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-07-25 08:42:24,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:24,706 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:42:24,706 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:42:24,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:42:24,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:42:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:42:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:42:24,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:42:24,712 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-07-25 08:42:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:24,712 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:42:24,712 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:42:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:42:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:42:24,713 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:24,713 INFO L354 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-07-25 08:42:24,713 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1223873524, now seen corresponding path program 183 times [2018-07-25 08:42:24,714 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:25,764 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:25,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:42:25,765 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:42:25,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:42:25,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:42:25,769 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-07-25 08:42:26,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:26,042 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-25 08:42:26,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:42:26,042 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-07-25 08:42:26,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:26,042 INFO L225 Difference]: With dead ends: 190 [2018-07-25 08:42:26,042 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:42:26,044 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:42:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:42:26,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:42:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:42:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:42:26,047 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-07-25 08:42:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:26,047 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:42:26,047 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:42:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:42:26,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:42:26,048 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:26,048 INFO L354 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-07-25 08:42:26,048 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:26,048 INFO L82 PathProgramCache]: Analyzing trace with hash 714628227, now seen corresponding path program 184 times [2018-07-25 08:42:26,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:27,120 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:27,120 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:42:27,120 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:42:27,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:42:27,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:42:27,125 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-07-25 08:42:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:28,002 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:42:28,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:42:28,002 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-07-25 08:42:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:28,002 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:42:28,002 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:42:28,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:42:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:42:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:42:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:42:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:42:28,007 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-07-25 08:42:28,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:28,007 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:42:28,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:42:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:42:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:42:28,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:28,008 INFO L354 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-07-25 08:42:28,008 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash 678640364, now seen corresponding path program 185 times [2018-07-25 08:42:28,008 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:29,031 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:29,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:42:29,031 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:42:29,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:42:29,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:42:29,036 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-07-25 08:42:30,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:30,059 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-25 08:42:30,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:42:30,060 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-07-25 08:42:30,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:30,060 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:42:30,060 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:42:30,063 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:42:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:42:30,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:42:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:42:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:42:30,066 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-07-25 08:42:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:30,067 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:42:30,067 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:42:30,067 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:42:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:42:30,068 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:30,068 INFO L354 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-07-25 08:42:30,068 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash -436983389, now seen corresponding path program 186 times [2018-07-25 08:42:30,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:31,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:31,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:42:31,185 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:42:31,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:42:31,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:42:31,189 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-07-25 08:42:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,600 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:42:31,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:42:31,600 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-07-25 08:42:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,600 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:42:31,601 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:42:31,601 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:42:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:42:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:42:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:42:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:42:31,604 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-07-25 08:42:31,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,604 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:42:31,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:42:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:42:31,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:42:31,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,605 INFO L354 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-07-25 08:42:31,605 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,605 INFO L82 PathProgramCache]: Analyzing trace with hash -661581364, now seen corresponding path program 187 times [2018-07-25 08:42:31,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:32,654 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:42:32,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:42:32,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:42:32,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:42:32,659 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-07-25 08:42:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,173 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-25 08:42:33,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:42:33,173 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-07-25 08:42:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,174 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:42:33,174 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:42:33,176 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:42:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:42:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:42:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:42:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:42:33,179 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-07-25 08:42:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,179 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:42:33,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:42:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:42:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:42:33,179 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,180 INFO L354 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-07-25 08:42:33,180 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,180 INFO L82 PathProgramCache]: Analyzing trace with hash 965816003, now seen corresponding path program 188 times [2018-07-25 08:42:33,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:34,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:34,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:42:34,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:42:34,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:42:34,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:42:34,324 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-07-25 08:42:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,376 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:42:35,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:42:35,376 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-07-25 08:42:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,377 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:42:35,377 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:42:35,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:42:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:42:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:42:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:42:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:42:35,382 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-07-25 08:42:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,382 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:42:35,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:42:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:42:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:42:35,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,383 INFO L354 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-07-25 08:42:35,383 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash -124473172, now seen corresponding path program 189 times [2018-07-25 08:42:35,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:36,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:36,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:42:36,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:42:36,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:42:36,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:42:36,521 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-07-25 08:42:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:37,588 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-25 08:42:37,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:42:37,589 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-07-25 08:42:37,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:37,589 INFO L225 Difference]: With dead ends: 196 [2018-07-25 08:42:37,589 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:42:37,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:42:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:42:37,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:42:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:42:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:42:37,593 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-07-25 08:42:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:37,594 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:42:37,594 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:42:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:42:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:42:37,595 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:37,595 INFO L354 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-07-25 08:42:37,595 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:37,595 INFO L82 PathProgramCache]: Analyzing trace with hash 436300771, now seen corresponding path program 190 times [2018-07-25 08:42:37,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:38,674 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:38,674 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:42:38,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:42:38,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:42:38,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:42:38,679 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-07-25 08:42:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:39,298 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:42:39,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:42:39,298 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-07-25 08:42:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:39,299 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:42:39,299 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:42:39,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:42:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:42:39,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:42:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:42:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:42:39,304 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-07-25 08:42:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:39,304 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:42:39,304 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:42:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:42:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:42:39,305 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:39,305 INFO L354 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-07-25 08:42:39,305 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:39,305 INFO L82 PathProgramCache]: Analyzing trace with hash 640423820, now seen corresponding path program 191 times [2018-07-25 08:42:39,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:40,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:40,451 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:42:40,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:42:40,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:42:40,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:42:40,457 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-07-25 08:42:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:40,785 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-25 08:42:40,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:42:40,785 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-07-25 08:42:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:40,786 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:42:40,786 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:42:40,788 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:42:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:42:40,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:42:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:42:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:42:40,792 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-07-25 08:42:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:40,792 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:42:40,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:42:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:42:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:42:40,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:40,793 INFO L354 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-07-25 08:42:40,794 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:40,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1621696253, now seen corresponding path program 192 times [2018-07-25 08:42:40,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:42,020 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:42,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:42:42,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:42:42,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:42:42,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:42:42,024 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-07-25 08:42:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:42,573 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:42:42,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:42:42,573 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-07-25 08:42:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:42,574 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:42:42,574 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:42:42,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:42:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:42:42,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:42:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:42:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:42:42,579 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-07-25 08:42:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:42,580 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:42:42,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:42:42,580 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:42:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:42:42,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:42,581 INFO L354 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-07-25 08:42:42,581 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1267025516, now seen corresponding path program 193 times [2018-07-25 08:42:42,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:43,617 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:43,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:42:43,617 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:42:43,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:42:43,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:42:43,622 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-07-25 08:42:44,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:44,659 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-25 08:42:44,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:42:44,659 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-07-25 08:42:44,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:44,660 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:42:44,660 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:42:44,663 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:42:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:42:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:42:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:42:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:42:44,666 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-07-25 08:42:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:44,667 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:42:44,667 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:42:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:42:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:42:44,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:44,668 INFO L354 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-07-25 08:42:44,668 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:44,668 INFO L82 PathProgramCache]: Analyzing trace with hash 623087139, now seen corresponding path program 194 times [2018-07-25 08:42:44,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:45,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:45,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:42:45,751 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:42:45,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:42:45,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:42:45,755 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-07-25 08:42:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:47,047 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:42:47,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:42:47,048 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-07-25 08:42:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:47,048 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:42:47,048 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:42:47,051 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:42:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:42:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:42:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:42:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:42:47,054 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-07-25 08:42:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:47,054 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:42:47,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:42:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:42:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:42:47,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:47,055 INFO L354 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-07-25 08:42:47,055 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:47,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2135833932, now seen corresponding path program 195 times [2018-07-25 08:42:47,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:48,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:48,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:42:48,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:42:48,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:42:48,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:42:48,311 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-07-25 08:42:49,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:49,569 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-25 08:42:49,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:42:49,569 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-07-25 08:42:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:49,570 INFO L225 Difference]: With dead ends: 202 [2018-07-25 08:42:49,570 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:42:49,572 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:42:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:42:49,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:42:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:42:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:42:49,575 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-07-25 08:42:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:49,575 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:42:49,575 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:42:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:42:49,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:42:49,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:49,576 INFO L354 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-07-25 08:42:49,576 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:49,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1786344259, now seen corresponding path program 196 times [2018-07-25 08:42:49,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:50,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:50,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:42:50,824 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:42:50,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:42:50,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:42:50,830 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-07-25 08:42:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:52,181 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:42:52,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:42:52,181 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-07-25 08:42:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:52,182 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:42:52,182 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:42:52,184 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:42:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:42:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:42:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:42:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:42:52,187 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-07-25 08:42:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:52,187 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:42:52,187 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:42:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:42:52,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:42:52,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:52,188 INFO L354 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-07-25 08:42:52,188 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:52,188 INFO L82 PathProgramCache]: Analyzing trace with hash -457901012, now seen corresponding path program 197 times [2018-07-25 08:42:52,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:53,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:53,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:42:53,444 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:42:53,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:42:53,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:42:53,446 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-07-25 08:42:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:54,494 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-25 08:42:54,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:42:54,494 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-07-25 08:42:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:54,495 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:42:54,495 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:42:54,496 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:42:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:42:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:42:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:42:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:42:54,498 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-07-25 08:42:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:54,499 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:42:54,499 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:42:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:42:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:42:54,499 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:54,500 INFO L354 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-07-25 08:42:54,500 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1310027677, now seen corresponding path program 198 times [2018-07-25 08:42:54,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:55,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:55,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:42:55,739 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:42:55,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:42:55,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:42:55,744 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-07-25 08:42:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:56,769 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:42:56,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:42:56,769 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-07-25 08:42:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:56,770 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:42:56,770 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:42:56,772 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:42:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:42:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:42:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:42:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:42:56,775 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-07-25 08:42:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:56,775 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:42:56,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:42:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:42:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:42:56,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:56,776 INFO L354 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-07-25 08:42:56,776 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:56,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1956150516, now seen corresponding path program 199 times [2018-07-25 08:42:56,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:58,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:58,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:42:58,056 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:42:58,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:42:58,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:42:58,063 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-07-25 08:42:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:59,028 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-25 08:42:59,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:42:59,028 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-07-25 08:42:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:59,029 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:42:59,029 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:42:59,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:42:59,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:42:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:42:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:42:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:42:59,035 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-07-25 08:42:59,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:59,036 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:42:59,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:42:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:42:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:42:59,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:59,037 INFO L354 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-07-25 08:42:59,037 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash -511122045, now seen corresponding path program 200 times [2018-07-25 08:42:59,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:00,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:00,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:43:00,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:43:00,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:43:00,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:43:00,389 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-07-25 08:43:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:01,307 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:43:01,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:43:01,307 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-07-25 08:43:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:01,307 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:43:01,307 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:43:01,310 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:43:01,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:43:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:43:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:43:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:43:01,312 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-07-25 08:43:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:01,312 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:43:01,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:43:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:43:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:43:01,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:01,313 INFO L354 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-07-25 08:43:01,313 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:01,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1335087596, now seen corresponding path program 201 times [2018-07-25 08:43:01,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:02,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:02,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:43:02,500 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:43:02,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:43:02,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:43:02,505 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-07-25 08:43:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:03,499 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-25 08:43:03,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:43:03,500 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-07-25 08:43:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:03,500 INFO L225 Difference]: With dead ends: 208 [2018-07-25 08:43:03,500 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:43:03,503 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:43:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:43:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:43:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:43:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:43:03,506 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-07-25 08:43:03,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:03,506 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:43:03,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:43:03,506 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:43:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:43:03,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:03,507 INFO L354 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-07-25 08:43:03,507 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:03,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1561955677, now seen corresponding path program 202 times [2018-07-25 08:43:03,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:04,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:04,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:43:04,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:43:04,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:43:04,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:43:04,902 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-07-25 08:43:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:05,932 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:43:05,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:43:05,932 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-07-25 08:43:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:05,933 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:43:05,933 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:43:05,934 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:43:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:43:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:43:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:43:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:43:05,937 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-07-25 08:43:05,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:05,937 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:43:05,937 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:43:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:43:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:43:05,938 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:05,938 INFO L354 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-07-25 08:43:05,938 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:05,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1175983924, now seen corresponding path program 203 times [2018-07-25 08:43:05,938 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:07,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:07,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:43:07,270 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:43:07,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:43:07,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:43:07,276 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-07-25 08:43:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:08,594 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-25 08:43:08,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:43:08,594 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-07-25 08:43:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:08,595 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:43:08,595 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:43:08,597 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:43:08,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:43:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:43:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:43:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:43:08,601 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-07-25 08:43:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:08,601 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:43:08,602 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:43:08,602 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:43:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:43:08,602 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:08,602 INFO L354 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-07-25 08:43:08,602 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2095761469, now seen corresponding path program 204 times [2018-07-25 08:43:08,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:09,966 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:09,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:43:09,966 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:43:09,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:43:09,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:43:09,973 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-07-25 08:43:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:11,508 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:43:11,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:43:11,508 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-07-25 08:43:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:11,509 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:43:11,509 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:43:11,512 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:43:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:43:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:43:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:43:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:43:11,515 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-07-25 08:43:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:11,515 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:43:11,515 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:43:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:43:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:43:11,516 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:11,516 INFO L354 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-07-25 08:43:11,516 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:11,516 INFO L82 PathProgramCache]: Analyzing trace with hash -544094292, now seen corresponding path program 205 times [2018-07-25 08:43:11,517 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:12,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:12,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:43:12,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:43:12,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:43:12,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:43:12,859 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-07-25 08:43:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:14,162 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-25 08:43:14,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:43:14,163 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-07-25 08:43:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:14,163 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:43:14,163 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:43:14,166 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:43:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:43:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:43:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:43:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:43:14,169 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-07-25 08:43:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:14,169 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:43:14,169 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:43:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:43:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:43:14,170 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:14,170 INFO L354 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-07-25 08:43:14,170 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:14,170 INFO L82 PathProgramCache]: Analyzing trace with hash 312947939, now seen corresponding path program 206 times [2018-07-25 08:43:14,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:15,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:15,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:43:15,469 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:43:15,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:43:15,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:43:15,478 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-07-25 08:43:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:16,972 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:43:16,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:43:16,972 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-07-25 08:43:16,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:16,973 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:43:16,973 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:43:16,976 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:43:16,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:43:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:43:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:43:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:43:16,979 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-07-25 08:43:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:16,979 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:43:16,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:43:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:43:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:43:16,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:16,980 INFO L354 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-07-25 08:43:16,980 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:16,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1111453324, now seen corresponding path program 207 times [2018-07-25 08:43:16,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:18,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:18,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:43:18,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:43:18,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:43:18,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:43:18,378 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-07-25 08:43:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:19,605 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-25 08:43:19,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:43:19,605 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-07-25 08:43:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:19,606 INFO L225 Difference]: With dead ends: 214 [2018-07-25 08:43:19,606 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:43:19,609 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:43:19,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:43:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:43:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:43:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:43:19,613 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-07-25 08:43:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:19,613 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:43:19,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:43:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:43:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:43:19,614 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:19,614 INFO L354 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-07-25 08:43:19,614 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:19,615 INFO L82 PathProgramCache]: Analyzing trace with hash 95316483, now seen corresponding path program 208 times [2018-07-25 08:43:19,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:21,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:21,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:43:21,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:43:21,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:43:21,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:43:21,047 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-07-25 08:43:21,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:21,933 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:43:21,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:43:21,933 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-07-25 08:43:21,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:21,934 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:43:21,934 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:43:21,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:43:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:43:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:43:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:43:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:43:21,939 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-07-25 08:43:21,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:21,940 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:43:21,940 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:43:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:43:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:43:21,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:21,940 INFO L354 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-07-25 08:43:21,941 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1340154516, now seen corresponding path program 209 times [2018-07-25 08:43:21,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:23,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:23,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:43:23,381 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:43:23,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:43:23,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:43:23,383 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-07-25 08:43:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:23,977 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-25 08:43:23,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:43:23,977 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-07-25 08:43:23,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:23,978 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:43:23,978 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:43:23,979 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:43:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:43:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:43:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:43:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:43:23,982 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-07-25 08:43:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:23,982 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:43:23,982 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:43:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:43:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:43:23,983 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:23,983 INFO L354 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-07-25 08:43:23,983 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1404884771, now seen corresponding path program 210 times [2018-07-25 08:43:23,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:25,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:25,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:43:25,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:43:25,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:43:25,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:43:25,351 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-07-25 08:43:26,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:26,573 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:43:26,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:43:26,573 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-07-25 08:43:26,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:26,573 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:43:26,573 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:43:26,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:43:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:43:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:43:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:43:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:43:26,579 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-07-25 08:43:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:26,579 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:43:26,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:43:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:43:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:43:26,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:26,580 INFO L354 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-07-25 08:43:26,580 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:26,581 INFO L82 PathProgramCache]: Analyzing trace with hash 601756748, now seen corresponding path program 211 times [2018-07-25 08:43:26,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:28,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:28,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:43:28,024 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:43:28,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:43:28,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:43:28,030 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-07-25 08:43:29,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:29,817 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-25 08:43:29,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:43:29,817 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-07-25 08:43:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:29,818 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:43:29,818 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:43:29,820 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:43:29,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:43:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:43:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:43:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:43:29,824 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-07-25 08:43:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:29,825 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:43:29,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:43:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:43:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:43:29,826 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:29,826 INFO L354 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-07-25 08:43:29,826 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:29,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1474591811, now seen corresponding path program 212 times [2018-07-25 08:43:29,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:31,324 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:31,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:43:31,324 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:43:31,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:43:31,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:43:31,330 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-07-25 08:43:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:32,600 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:43:32,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:43:32,601 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-07-25 08:43:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:32,601 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:43:32,601 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:43:32,604 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:43:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:43:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:43:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:43:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:43:32,607 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-07-25 08:43:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:32,607 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:43:32,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:43:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:43:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:43:32,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:32,608 INFO L354 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-07-25 08:43:32,608 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:32,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1532292308, now seen corresponding path program 213 times [2018-07-25 08:43:32,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:34,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:34,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:43:34,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:43:34,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:43:34,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:43:34,051 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-07-25 08:43:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:34,538 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-25 08:43:34,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:43:34,538 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-07-25 08:43:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:34,539 INFO L225 Difference]: With dead ends: 220 [2018-07-25 08:43:34,539 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:43:34,541 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:43:34,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:43:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:43:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:43:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:43:34,544 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-07-25 08:43:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:34,544 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:43:34,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:43:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:43:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:43:34,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:34,545 INFO L354 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-07-25 08:43:34,545 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash -256419485, now seen corresponding path program 214 times [2018-07-25 08:43:34,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:35,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:35,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:43:35,947 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:43:35,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:43:35,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:43:35,952 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-07-25 08:43:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:36,920 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:43:36,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:43:36,920 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-07-25 08:43:36,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:36,920 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:43:36,921 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:43:36,923 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:43:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:43:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:43:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:43:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:43:36,926 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-07-25 08:43:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:36,926 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:43:36,926 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:43:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:43:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:43:36,926 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:36,927 INFO L354 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-07-25 08:43:36,927 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:36,927 INFO L82 PathProgramCache]: Analyzing trace with hash 640932364, now seen corresponding path program 215 times [2018-07-25 08:43:36,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:38,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:38,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:43:38,336 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:43:38,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:43:38,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:43:38,341 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-07-25 08:43:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:40,261 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-25 08:43:40,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:43:40,261 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-07-25 08:43:40,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:40,261 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:43:40,261 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:43:40,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:43:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:43:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:43:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:43:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:43:40,267 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-07-25 08:43:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:40,267 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:43:40,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:43:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:43:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:43:40,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:40,268 INFO L354 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-07-25 08:43:40,268 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:40,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1605931389, now seen corresponding path program 216 times [2018-07-25 08:43:40,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:41,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:41,695 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:43:41,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:43:41,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:43:41,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:43:41,699 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-07-25 08:43:42,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:42,961 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:43:42,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:43:42,962 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-07-25 08:43:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:42,962 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:43:42,962 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:43:42,964 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:43:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:43:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:43:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:43:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:43:42,967 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-07-25 08:43:42,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:42,967 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:43:42,967 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:43:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:43:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:43:42,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:42,968 INFO L354 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-07-25 08:43:42,968 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1755736300, now seen corresponding path program 217 times [2018-07-25 08:43:42,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:44,384 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:44,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:43:44,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:43:44,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:43:44,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:43:44,390 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-07-25 08:43:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:45,479 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-25 08:43:45,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:43:45,480 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-07-25 08:43:45,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:45,480 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:43:45,480 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:43:45,483 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:43:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:43:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:43:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:43:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:43:45,485 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-07-25 08:43:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:45,486 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:43:45,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:43:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:43:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:43:45,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:45,486 INFO L354 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-07-25 08:43:45,487 INFO L415 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:45,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1406747741, now seen corresponding path program 218 times [2018-07-25 08:43:45,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:47,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:47,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:43:47,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:43:47,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:43:47,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:43:47,032 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-07-25 08:43:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:48,855 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:43:48,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:43:48,855 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-07-25 08:43:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:48,856 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:43:48,856 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:43:48,857 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:43:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:43:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:43:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:43:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:43:48,859 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-07-25 08:43:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:48,859 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:43:48,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 08:43:48,860 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:43:48,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:43:48,860 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:48,860 INFO L354 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-07-25 08:43:48,860 INFO L415 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:48,860 INFO L82 PathProgramCache]: Analyzing trace with hash -659505204, now seen corresponding path program 219 times [2018-07-25 08:43:48,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:50,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:50,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:43:50,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:43:50,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:43:50,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:43:50,296 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-07-25 08:43:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:51,022 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-25 08:43:51,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:43:51,022 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-07-25 08:43:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:51,023 INFO L225 Difference]: With dead ends: 226 [2018-07-25 08:43:51,023 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:43:51,026 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:43:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:43:51,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:43:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:43:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:43:51,028 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-07-25 08:43:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:51,029 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:43:51,029 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:43:51,029 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:43:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:43:51,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:51,029 INFO L354 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-07-25 08:43:51,030 INFO L415 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1030176963, now seen corresponding path program 220 times [2018-07-25 08:43:51,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:52,582 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:52,582 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 08:43:52,582 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 08:43:52,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 08:43:52,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:43:52,585 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-07-25 08:43:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:53,561 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:43:53,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:43:53,561 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-07-25 08:43:53,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:53,561 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:43:53,562 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:43:53,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:43:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:43:53,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:43:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:43:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:43:53,565 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-07-25 08:43:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:53,565 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:43:53,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 08:43:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:43:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:43:53,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:53,566 INFO L354 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-07-25 08:43:53,566 INFO L415 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:53,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1870716588, now seen corresponding path program 221 times [2018-07-25 08:43:53,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:55,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:55,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:43:55,066 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:43:55,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:43:55,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:43:55,075 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-07-25 08:43:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:57,098 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-25 08:43:57,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:43:57,098 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-07-25 08:43:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:57,099 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:43:57,099 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:43:57,102 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:43:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:43:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:43:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:43:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:43:57,105 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-07-25 08:43:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:57,105 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:43:57,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:43:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:43:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:43:57,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:57,106 INFO L354 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-07-25 08:43:57,106 INFO L415 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:57,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2137326109, now seen corresponding path program 222 times [2018-07-25 08:43:57,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:58,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:58,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 08:43:58,628 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 08:43:58,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 08:43:58,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:43:58,634 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-07-25 08:43:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:59,558 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:43:59,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:43:59,558 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-07-25 08:43:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:59,559 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:43:59,559 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:43:59,560 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:43:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:43:59,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:43:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:43:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:43:59,562 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-07-25 08:43:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:59,562 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:43:59,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 08:43:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:43:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:43:59,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:59,563 INFO L354 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-07-25 08:43:59,563 INFO L415 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1832598132, now seen corresponding path program 223 times [2018-07-25 08:43:59,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:01,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:01,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:44:01,011 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:44:01,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:44:01,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:44:01,017 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-07-25 08:44:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:03,171 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-25 08:44:03,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:44:03,172 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-07-25 08:44:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:03,172 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:44:03,172 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:44:03,176 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:44:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:44:03,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:44:03,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:44:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:44:03,179 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-07-25 08:44:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:03,179 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:44:03,179 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:44:03,179 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:44:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:44:03,180 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:03,180 INFO L354 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-07-25 08:44:03,180 INFO L415 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:03,180 INFO L82 PathProgramCache]: Analyzing trace with hash -975965437, now seen corresponding path program 224 times [2018-07-25 08:44:03,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:04,744 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:04,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-25 08:44:04,744 INFO L451 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-25 08:44:04,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-25 08:44:04,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:44:04,752 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-07-25 08:44:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:05,310 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:44:05,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:44:05,311 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-07-25 08:44:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:05,311 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:44:05,311 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:44:05,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:44:05,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:44:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:44:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:44:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:44:05,317 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-07-25 08:44:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:05,317 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:44:05,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-25 08:44:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:44:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:44:05,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:05,318 INFO L354 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-07-25 08:44:05,318 INFO L415 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash -190155668, now seen corresponding path program 225 times [2018-07-25 08:44:05,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:06,884 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:06,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 08:44:06,885 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:44:06,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:44:06,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:44:06,891 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-07-25 08:44:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:09,044 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-25 08:44:09,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:44:09,044 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-07-25 08:44:09,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:09,044 INFO L225 Difference]: With dead ends: 232 [2018-07-25 08:44:09,045 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:44:09,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:44:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:44:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 08:44:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:44:09,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:44:09,051 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-07-25 08:44:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:09,052 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:44:09,052 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:44:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:44:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:44:09,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:09,053 INFO L354 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-07-25 08:44:09,053 INFO L415 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:09,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1599856605, now seen corresponding path program 226 times [2018-07-25 08:44:09,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:10,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:10,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-25 08:44:10,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-25 08:44:10,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-25 08:44:10,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:44:10,640 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-07-25 08:44:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:11,924 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:44:11,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 08:44:11,925 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-07-25 08:44:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:11,925 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:44:11,925 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:44:11,928 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:44:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:44:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:44:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:44:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:44:11,931 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-07-25 08:44:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:11,931 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:44:11,931 INFO L473 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-25 08:44:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:44:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:44:11,932 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:11,932 INFO L354 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-07-25 08:44:11,932 INFO L415 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:11,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1944054604, now seen corresponding path program 227 times [2018-07-25 08:44:11,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:13,520 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:13,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 08:44:13,520 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 08:44:13,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 08:44:13,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:44:13,527 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-07-25 08:44:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:15,767 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-25 08:44:15,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:44:15,767 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-07-25 08:44:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:15,768 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:44:15,768 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:44:15,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:44:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:44:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:44:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:44:15,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:44:15,774 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-07-25 08:44:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:15,775 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:44:15,775 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 08:44:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:44:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:44:15,775 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:15,775 INFO L354 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-07-25 08:44:15,775 INFO L415 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:15,776 INFO L82 PathProgramCache]: Analyzing trace with hash 136152387, now seen corresponding path program 228 times [2018-07-25 08:44:15,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:17,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:17,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-25 08:44:17,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-25 08:44:17,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-25 08:44:17,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:44:17,409 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-07-25 08:44:18,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:18,006 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:44:18,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-25 08:44:18,006 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-07-25 08:44:18,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:18,007 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:44:18,007 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:44:18,010 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:44:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:44:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:44:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:44:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:44:18,063 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-07-25 08:44:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:18,063 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:44:18,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-25 08:44:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:44:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:44:18,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:18,064 INFO L354 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-07-25 08:44:18,064 INFO L415 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:18,064 INFO L82 PathProgramCache]: Analyzing trace with hash -74241492, now seen corresponding path program 229 times [2018-07-25 08:44:18,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:19,669 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:19,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 08:44:19,669 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 08:44:19,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 08:44:19,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:44:19,676 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-07-25 08:44:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:21,993 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-25 08:44:21,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 08:44:21,994 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-07-25 08:44:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:21,994 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:44:21,994 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:44:21,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:44:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:44:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 08:44:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:44:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:44:22,001 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-07-25 08:44:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:22,001 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:44:22,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-25 08:44:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:44:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:44:22,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:22,002 INFO L354 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-07-25 08:44:22,002 INFO L415 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:22,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1993482851, now seen corresponding path program 230 times [2018-07-25 08:44:22,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:23,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:23,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-25 08:44:23,698 INFO L451 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-25 08:44:23,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-25 08:44:23,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:44:23,701 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-07-25 08:44:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:25,022 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:44:25,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-25 08:44:25,022 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-07-25 08:44:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:25,022 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:44:25,023 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:44:25,024 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:44:25,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:44:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:44:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:44:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:44:25,026 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-07-25 08:44:25,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:25,026 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:44:25,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-25 08:44:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:44:25,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:44:25,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:25,027 INFO L354 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-07-25 08:44:25,027 INFO L415 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:25,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1668428044, now seen corresponding path program 231 times [2018-07-25 08:44:25,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:26,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:26,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-25 08:44:26,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-25 08:44:26,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-25 08:44:26,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:44:26,641 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-07-25 08:44:27,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:27,869 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-25 08:44:27,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 08:44:27,869 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-07-25 08:44:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:27,870 INFO L225 Difference]: With dead ends: 238 [2018-07-25 08:44:27,870 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:44:27,873 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:44:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:44:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 08:44:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 08:44:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 08:44:27,876 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-07-25 08:44:27,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:27,876 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 08:44:27,876 INFO L473 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-25 08:44:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 08:44:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 08:44:27,877 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:27,877 INFO L354 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-07-25 08:44:27,877 INFO L415 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:27,877 INFO L82 PathProgramCache]: Analyzing trace with hash 181663619, now seen corresponding path program 232 times [2018-07-25 08:44:27,877 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:29,605 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:29,605 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:29,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234] total 234 [2018-07-25 08:44:29,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-07-25 08:44:29,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-07-25 08:44:29,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:44:29,609 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-07-25 08:44:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:31,369 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:44:31,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-25 08:44:31,369 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-07-25 08:44:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:31,369 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:44:31,369 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:44:31,371 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:44:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:44:31,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:44:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:44:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:44:31,373 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-07-25 08:44:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:31,373 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:44:31,374 INFO L473 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-07-25 08:44:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:44:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:44:31,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:31,374 INFO L354 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-07-25 08:44:31,374 INFO L415 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:31,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1336606700, now seen corresponding path program 233 times [2018-07-25 08:44:31,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:33,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:33,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-25 08:44:33,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-25 08:44:33,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-25 08:44:33,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:44:33,016 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-07-25 08:44:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:34,585 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-25 08:44:34,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 08:44:34,585 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-07-25 08:44:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:34,586 INFO L225 Difference]: With dead ends: 240 [2018-07-25 08:44:34,586 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:44:34,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:44:34,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:44:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:44:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:44:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 08:44:34,592 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-07-25 08:44:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:34,592 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 08:44:34,592 INFO L473 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-25 08:44:34,593 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 08:44:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:44:34,593 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:34,593 INFO L354 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-07-25 08:44:34,593 INFO L415 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:34,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1514863453, now seen corresponding path program 234 times [2018-07-25 08:44:34,594 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:36,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:36,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-25 08:44:36,286 INFO L451 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-25 08:44:36,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-25 08:44:36,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:44:36,290 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-07-25 08:44:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:37,999 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:44:37,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-25 08:44:37,999 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-07-25 08:44:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:38,000 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:44:38,000 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:44:38,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:44:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:44:38,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:44:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:44:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:44:38,005 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-07-25 08:44:38,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:38,005 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:44:38,005 INFO L473 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-25 08:44:38,005 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:44:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:44:38,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:38,006 INFO L354 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-07-25 08:44:38,006 INFO L415 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash 283875020, now seen corresponding path program 235 times [2018-07-25 08:44:38,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:39,694 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:39,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-25 08:44:39,695 INFO L451 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-25 08:44:39,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-25 08:44:39,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:44:39,701 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. Received shutdown request... [2018-07-25 08:44:41,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-25 08:44:41,420 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:44:41,425 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:44:41,425 INFO L202 PluginConnector]: Adding new model functions1.i_3.bplTransformedIcfg_BEv2_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:44:41 BoogieIcfgContainer [2018-07-25 08:44:41,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:44:41,426 INFO L168 Benchmark]: Toolchain (without parser) took 251127.23 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 24.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-25 08:44:41,428 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 08:44:41,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.37 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 08:44:41,428 INFO L168 Benchmark]: Boogie Preprocessor took 23.13 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 08:44:41,429 INFO L168 Benchmark]: RCFGBuilder took 260.83 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 08:44:41,429 INFO L168 Benchmark]: TraceAbstraction took 250797.30 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 13.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-25 08:44:41,432 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 41.37 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 23.13 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 260.83 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 250797.30 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 13.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (239states) and interpolant automaton (currently 233 states, 238 states before enhancement), while ReachableStatesComputation was computing reachable states (231 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 250.7s OverallTime, 236 OverallIterations, 235 TraceHistogramMax, 96.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 706 SDtfs, 0 SDslu, 15014 SDs, 0 SdLazy, 43209 SolverSat, 439 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28202 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 27966 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=235, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 235 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 11.6s SatisfiabilityAnalysisTime, 136.8s InterpolantComputationTime, 28438 NumberOfCodeBlocks, 28438 NumberOfCodeBlocksAsserted, 236 NumberOfCheckSat, 28202 ConstructedInterpolants, 0 QuantifiedInterpolants, 13340018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 236 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2190670 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/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-44-41-447.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/functions1.i_3.bplTransformedIcfg_BEv2_8.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-44-41-447.csv Completed graceful shutdown