WORST_CASE(?,O(n^1)) * Step 1: NaturalMI WORST_CASE(?,O(n^1)) + Considered Problem: - Strict TRS: activate(X) -> X activate(n__first(X1,X2)) -> first(X1,X2) activate(n__from(X)) -> from(X) first(X1,X2) -> n__first(X1,X2) first(0(),X) -> nil() first(s(X),cons(Y,Z)) -> cons(Y,n__first(X,activate(Z))) from(X) -> cons(X,n__from(s(X))) from(X) -> n__from(X) - Signature: {activate/1,first/2,from/1} / {0/0,cons/2,n__first/2,n__from/1,nil/0,s/1} - Obligation: innermost runtime complexity wrt. defined symbols {activate,first,from} and constructors {0,cons,n__first ,n__from,nil,s} + Applied Processor: NaturalMI {miDimension = 1, miDegree = 1, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Nothing} + Details: We apply a matrix interpretation of kind constructor based matrix interpretation: The following argument positions are considered usable: uargs(cons) = {2}, uargs(n__first) = {2} Following symbols are considered usable: {activate,first,from} TcT has computed the following interpretation: p(0) = [8] p(activate) = [6] x1 + [8] p(cons) = [1] x1 + [1] x2 + [1] p(first) = [6] x2 + [7] p(from) = [4] x1 + [13] p(n__first) = [1] x2 + [0] p(n__from) = [1] x1 + [3] p(nil) = [2] p(s) = [8] Following rules are strictly oriented: activate(X) = [6] X + [8] > [1] X + [0] = X activate(n__first(X1,X2)) = [6] X2 + [8] > [6] X2 + [7] = first(X1,X2) activate(n__from(X)) = [6] X + [26] > [4] X + [13] = from(X) first(X1,X2) = [6] X2 + [7] > [1] X2 + [0] = n__first(X1,X2) first(0(),X) = [6] X + [7] > [2] = nil() first(s(X),cons(Y,Z)) = [6] Y + [6] Z + [13] > [1] Y + [6] Z + [9] = cons(Y,n__first(X,activate(Z))) from(X) = [4] X + [13] > [1] X + [12] = cons(X,n__from(s(X))) from(X) = [4] X + [13] > [1] X + [3] = n__from(X) Following rules are (at-least) weakly oriented: WORST_CASE(?,O(n^1))