Input TRS: 1: from(X) -> cons(X,n__from(s(X))) 2: first(0(),Z) -> nil() 3: first(s(X),cons(Y,Z)) -> cons(Y,n__first(X,activate(Z))) 4: sel(0(),cons(X,Z)) -> X 5: sel(s(X),cons(Y,Z)) -> sel(X,activate(Z)) 6: from(X) -> n__from(X) 7: first(X1,X2) -> n__first(X1,X2) 8: activate(n__from(X)) -> from(X) 9: activate(n__first(X1,X2)) -> first(X1,X2) 10: activate(X) -> X Number of strict rules: 10 Direct Order(PosReal,>,Poly) ... failed. Freezing ... failed. Dependency Pairs: #1: #activate(n__first(X1,X2)) -> #first(X1,X2) #2: #sel(s(X),cons(Y,Z)) -> #sel(X,activate(Z)) #3: #sel(s(X),cons(Y,Z)) -> #activate(Z) #4: #first(s(X),cons(Y,Z)) -> #activate(Z) #5: #activate(n__from(X)) -> #from(X) Number of SCCs: 2, DPs: 3, edges: 3 SCC { #2 } Removing DPs: Order(PosReal,>,Sum)... succeeded. s(x1) weight: (/ 1 4) + x1 n__first(x1,x2) weight: (/ 3 4) + x1 activate(x1) weight: (/ 1 4) n__from(x1) weight: (/ 3 4) #activate(x1) weight: 0 0() weight: 0 #sel(x1,x2) weight: x1 from(x1) weight: (/ 1 2) sel(x1,x2) weight: 0 #first(x1,x2) weight: 0 nil() weight: 0 first(x1,x2) weight: (/ 1 2) #from(x1) weight: 0 cons(x1,x2) weight: (/ 3 4) + x1 Usable rules: { } Removed DPs: #2 Number of SCCs: 1, DPs: 2, edges: 2 SCC { #1 #4 } Removing DPs: Order(PosReal,>,Sum)... succeeded. s(x1) weight: (/ 1 8) + x1 n__first(x1,x2) weight: (/ 3 8) + x1 + x2 activate(x1) weight: (/ 1 8) n__from(x1) weight: (/ 3 8) #activate(x1) weight: (/ 1 8) + x1 0() weight: 0 #sel(x1,x2) weight: 0 from(x1) weight: (/ 1 4) sel(x1,x2) weight: 0 #first(x1,x2) weight: x1 + x2 nil() weight: 0 first(x1,x2) weight: (/ 1 4) #from(x1) weight: 0 cons(x1,x2) weight: (/ 1 8) + x1 + x2 Usable rules: { } Removed DPs: #1 #4 Number of SCCs: 0, DPs: 0, edges: 0 YES