YES Problem 1: (VAR v_NonEmpty:S X:S X1:S X2:S Y:S Z:S) (RULES a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ) (STRATEGY INNERMOST) Problem 1: Dependency Pairs Processor: -> Pairs: A__2ND(cons(X:S,X1:S)) -> A__2ND(cons1(mark(X:S),mark(X1:S))) A__2ND(cons(X:S,X1:S)) -> MARK(X:S) A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) Problem 1: SCC Processor: -> Pairs: A__2ND(cons(X:S,X1:S)) -> A__2ND(cons1(mark(X:S),mark(X1:S))) A__2ND(cons(X:S,X1:S)) -> MARK(X:S) A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A__2ND(cons(X:S,X1:S)) -> A__2ND(cons1(mark(X:S),mark(X1:S))) A__2ND(cons(X:S,X1:S)) -> MARK(X:S) A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) ->->-> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) Problem 1: Reduction Pairs Processor: -> Pairs: A__2ND(cons(X:S,X1:S)) -> A__2ND(cons1(mark(X:S),mark(X1:S))) A__2ND(cons(X:S,X1:S)) -> MARK(X:S) A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) -> Usable rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 2 ->Bound: 1 ->Interpretation: [a__2nd](X) = [1 1;1 1].X + [1;1] [a__from](X) = [1 1;1 0].X + [0;1] [mark](X) = [1 0;0 1].X [2nd](X) = [1 1;1 1].X + [1;1] [cons](X1,X2) = [1 1;0 0].X1 + [0 0;1 0].X2 + [0;1] [cons1](X1,X2) = [1 1;0 0].X1 + [1 0;0 0].X2 [fSNonEmpty] = 0 [from](X) = [1 1;1 0].X + [0;1] [s](X) = [1 0;0 0].X [A__2ND](X) = [1 1;1 1].X + [1;1] [A__FROM](X) = [1 1;1 1].X + [1;1] [MARK](X) = [1 0;1 0].X + [1;1] Problem 1: SCC Processor: -> Pairs: A__2ND(cons(X:S,X1:S)) -> MARK(X:S) A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A__2ND(cons(X:S,X1:S)) -> MARK(X:S) A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) ->->-> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) Problem 1: Reduction Pairs Processor: -> Pairs: A__2ND(cons(X:S,X1:S)) -> MARK(X:S) A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) -> Usable rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 2 ->Bound: 1 ->Interpretation: [a__2nd](X) = [1 1;1 1].X + [1;1] [a__from](X) = [1 1;1 1].X + [1;1] [mark](X) = [1 0;0 1].X [2nd](X) = [1 1;1 1].X + [1;1] [cons](X1,X2) = [0 0;1 1].X1 + [0 1;0 0].X2 + [0;1] [cons1](X1,X2) = [0 0;0 1].X1 + [0 0;0 1].X2 + [0;1] [fSNonEmpty] = 0 [from](X) = [1 1;1 1].X + [1;1] [s](X) = [0 0;1 1].X [A__2ND](X) = [1 1;1 1].X + [0;1] [A__FROM](X) = [1 1;1 1].X + [1;1] [MARK](X) = [0 1;0 1].X + [0;1] Problem 1: SCC Processor: -> Pairs: A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) ->->-> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) Problem 1: Reduction Pairs Processor: -> Pairs: A__2ND(cons(X:S,X1:S)) -> MARK(X1:S) A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) -> Usable rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 2 ->Bound: 1 ->Interpretation: [a__2nd](X) = [1 1;1 1].X + [1;1] [a__from](X) = [0 1;1 1].X + [1;0] [mark](X) = [1 0;0 1].X [2nd](X) = [1 1;1 1].X + [1;1] [cons](X1,X2) = [0 0;1 1].X1 + [0 1;0 0].X2 + [1;0] [cons1](X1,X2) = [0 0;1 1].X1 + [0 0;0 1].X2 [fSNonEmpty] = 0 [from](X) = [0 1;1 1].X + [1;0] [s](X) = [0 0;0 1].X [A__2ND](X) = [1 1;1 1].X + [1;1] [A__FROM](X) = [0 1;0 1].X + [1;0] [MARK](X) = [0 1;0 1].X + [1;0] Problem 1: SCC Processor: -> Pairs: A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) ->->-> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) Problem 1: Reduction Pairs Processor: -> Pairs: A__2ND(cons1(X:S,cons(Y:S,Z:S))) -> MARK(Y:S) A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) -> Usable rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 2 ->Bound: 1 ->Interpretation: [a__2nd](X) = [1 1;1 1].X + [1;1] [a__from](X) = [1 1;1 0].X + [0;1] [mark](X) = [1 0;0 1].X [2nd](X) = [1 1;1 1].X + [1;1] [cons](X1,X2) = [1 1;0 0].X1 + [0 0;1 0].X2 + [0;1] [cons1](X1,X2) = [1 0;0 1].X1 + [1 0;0 0].X2 + [1;0] [fSNonEmpty] = 0 [from](X) = [1 1;1 0].X + [0;1] [s](X) = [1 0;0 0].X [A__2ND](X) = [1 1;1 1].X + [1;1] [A__FROM](X) = [1 1;1 1].X + [1;1] [MARK](X) = [1 0;1 0].X + [1;1] Problem 1: SCC Processor: -> Pairs: A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> A__2ND(mark(X:S)) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) ->->-> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) Problem 1: Reduction Pairs Processor: -> Pairs: A__FROM(X:S) -> MARK(X:S) MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) -> Usable rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Interpretation type: Linear ->Coefficients: Natural Numbers ->Dimension: 2 ->Bound: 1 ->Interpretation: [a__2nd](X) = [1 1;1 1].X + [1;1] [a__from](X) = [1 1;1 0].X + [1;1] [mark](X) = [1 0;0 1].X [2nd](X) = [1 1;1 1].X + [1;1] [cons](X1,X2) = [1 1;0 0].X1 + [0 0;1 0].X2 [cons1](X1,X2) = [1 1;0 0].X1 + [1 0;0 0].X2 [fSNonEmpty] = 0 [from](X) = [1 1;1 0].X + [1;1] [s](X) = [1 0;0 0].X [A__2ND](X) = 0 [A__FROM](X) = [1 0;1 1].X + [1;0] [MARK](X) = [1 0;1 0].X Problem 1: SCC Processor: -> Pairs: MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> A__FROM(mark(X:S)) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Strongly Connected Components: ->->Cycle: ->->-> Pairs: MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) ->->-> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) Problem 1: Subterm Processor: -> Pairs: MARK(2nd(X:S)) -> MARK(X:S) MARK(cons(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X1:S) MARK(cons1(X1:S,X2:S)) -> MARK(X2:S) MARK(from(X:S)) -> MARK(X:S) MARK(s(X:S)) -> MARK(X:S) -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Projection: pi(MARK) = 1 Problem 1: SCC Processor: -> Pairs: Empty -> Rules: a__2nd(cons(X:S,X1:S)) -> a__2nd(cons1(mark(X:S),mark(X1:S))) a__2nd(cons1(X:S,cons(Y:S,Z:S))) -> mark(Y:S) a__2nd(X:S) -> 2nd(X:S) a__from(X:S) -> cons(mark(X:S),from(s(X:S))) a__from(X:S) -> from(X:S) mark(2nd(X:S)) -> a__2nd(mark(X:S)) mark(cons(X1:S,X2:S)) -> cons(mark(X1:S),X2:S) mark(cons1(X1:S,X2:S)) -> cons1(mark(X1:S),mark(X2:S)) mark(from(X:S)) -> a__from(mark(X:S)) mark(s(X:S)) -> s(mark(X:S)) ->Strongly Connected Components: There is no strongly connected component The problem is finite.