YES TRS: a__filter(cons(X,Y),0(),M) -> cons(0(),filter(Y,M,M)) a__filter(cons(X,Y),s(N),M) -> cons(mark(X),filter(Y,N,M)) a__sieve(cons(0(),Y)) -> cons(0(),sieve(Y)) a__sieve(cons(s(N),Y)) -> cons(s(mark(N)),sieve(filter(Y,N,N))) a__nats(N) -> cons(mark(N),nats(s(N))) a__zprimes() -> a__sieve(a__nats(s(s(0())))) mark(filter(X1,X2,X3)) -> a__filter(mark(X1),mark(X2),mark(X3)) mark(sieve(X)) -> a__sieve(mark(X)) mark(nats(X)) -> a__nats(mark(X)) mark(zprimes()) -> a__zprimes() mark(cons(X1,X2)) -> cons(mark(X1),X2) mark(0()) -> 0() mark(s(X)) -> s(mark(X)) a__filter(X1,X2,X3) -> filter(X1,X2,X3) a__sieve(X) -> sieve(X) a__nats(X) -> nats(X) a__zprimes() -> zprimes() max/plus interpretations on N: a__filter_A(x1,x2,x3) = max{8, x1, x2, x3} a__filter#_A(x1,x2,x3) = max{8, x1, x2, x3} cons_A(x1,x2) = max{6, 3 + x1, x2} cons#_A(x1,x2) = max{6, 3 + x1, x2} 0_A = 4 0#_A = 4 filter_A(x1,x2,x3) = max{8, x1, x2, x3} filter#_A(x1,x2,x3) = max{8, x1, x2, x3} s_A(x1) = max{0, x1} s#_A(x1) = max{0, x1} mark_A(x1) = max{0, x1} mark#_A(x1) = max{0, x1} a__sieve_A(x1) = max{14, 6 + x1} a__sieve#_A(x1) = max{14, 6 + x1} sieve_A(x1) = max{14, 6 + x1} sieve#_A(x1) = max{14, 6 + x1} a__nats_A(x1) = max{7, 8 + x1} a__nats#_A(x1) = max{7, 8 + x1} nats_A(x1) = max{8, 8 + x1} nats#_A(x1) = max{8, 8 + x1} a__zprimes_A = 19 a__zprimes#_A = 19 zprimes_A = 19 zprimes#_A = 19 precedence: 0 > mark > a__zprimes > a__sieve = a__nats = zprimes > a__filter = s = nats > cons > filter = sieve