MAYBE MAYBE TRS: { cond2(true(), x, y) -> cond3(gr(x, 0()), x, y), cond2(false(), x, y) -> cond4(gr(y, 0()), x, y), gr(0(), x) -> false(), gr(s(x), 0()) -> true(), gr(s(x), s(y)) -> gr(x, y), cond1(true(), x, y) -> cond2(gr(x, y), x, y), cond3(true(), x, y) -> cond3(gr(x, 0()), p(x), y), cond3(false(), x, y) -> cond1(and(gr(x, 0()), gr(y, 0())), x, y), cond4(true(), x, y) -> cond4(gr(y, 0()), x, p(y)), cond4(false(), x, y) -> cond1(and(gr(x, 0()), gr(y, 0())), x, y), p(0()) -> 0(), p(s(x)) -> x, and(x, false()) -> false(), and(true(), true()) -> true(), and(false(), x) -> false() } DUP: We consider a duplicating system. Trs: { cond2(true(), x, y) -> cond3(gr(x, 0()), x, y), cond2(false(), x, y) -> cond4(gr(y, 0()), x, y), gr(0(), x) -> false(), gr(s(x), 0()) -> true(), gr(s(x), s(y)) -> gr(x, y), cond1(true(), x, y) -> cond2(gr(x, y), x, y), cond3(true(), x, y) -> cond3(gr(x, 0()), p(x), y), cond3(false(), x, y) -> cond1(and(gr(x, 0()), gr(y, 0())), x, y), cond4(true(), x, y) -> cond4(gr(y, 0()), x, p(y)), cond4(false(), x, y) -> cond1(and(gr(x, 0()), gr(y, 0())), x, y), p(0()) -> 0(), p(s(x)) -> x, and(x, false()) -> false(), and(true(), true()) -> true(), and(false(), x) -> false() } Fail