YES Input TRS: 1: from(X) -> cons(X,n__from(s(X))) 2: head(cons(X,XS)) -> X 3: 2nd(cons(X,XS)) -> head(activate(XS)) 4: take(0(),XS) -> nil() 5: take(s(N),cons(X,XS)) -> cons(X,n__take(N,activate(XS))) 6: sel(0(),cons(X,XS)) -> X 7: sel(s(N),cons(X,XS)) -> sel(N,activate(XS)) 8: from(X) -> n__from(X) 9: take(X1,X2) -> n__take(X1,X2) 10: activate(n__from(X)) -> from(X) 11: activate(n__take(X1,X2)) -> take(X1,X2) 12: activate(X) -> X Number of strict rules: 12 Direct POLO(bPol) ... failed. Uncurrying ... failed. Dependency Pairs: #1: #activate(n__take(X1,X2)) -> #take(X1,X2) #2: #sel(s(N),cons(X,XS)) -> #sel(N,activate(XS)) #3: #sel(s(N),cons(X,XS)) -> #activate(XS) #4: #activate(n__from(X)) -> #from(X) #5: #take(s(N),cons(X,XS)) -> #activate(XS) #6: #2nd(cons(X,XS)) -> #head(activate(XS)) #7: #2nd(cons(X,XS)) -> #activate(XS) Number of SCCs: 2, DPs: 3 SCC { #2 } POLO(Sum)... succeeded. s w: x1 + 1 #take w: 0 activate w: x1 + 1 take w: x1 + x2 + 38978 n__from w: 19306 #activate w: 0 2nd w: 0 #head w: 0 0 w: 44083 n__take w: x1 + x2 + 38978 #sel w: x1 + x2 from w: 19307 sel w: 0 nil w: 0 #2nd w: 0 #from w: 0 head w: 0 cons w: x2 + 1 USABLE RULES: { 1 4 5 8..12 } Removed DPs: #2 Number of SCCs: 1, DPs: 2 SCC { #1 #5 } POLO(Sum)... succeeded. s w: x1 + 1 #take w: x1 + x2 activate w: x1 + 18919 take w: x1 + x2 + 18919 n__from w: 35231 #activate w: x1 2nd w: 0 #head w: 0 0 w: 44083 n__take w: x1 + x2 + 1 #sel w: x2 from w: 54150 sel w: 0 nil w: 0 #2nd w: 0 #from w: 0 head w: 0 cons w: x2 + 18919 USABLE RULES: { 1 4 5 8..12 } Removed DPs: #1 #5 Number of SCCs: 0, DPs: 0