[M] -> { S3[i0, i1, i2] -> [i0] : i0 >= 1 and i0 <= M and i1 >= 1 + i0 and i1 <= M and i2 >= 1 and i2 <= -1 + i0; S4[i0, i1] -> [i1] : i0 >= 1 and i0 <= M and i1 >= 1 + i0 and i1 <= M; S1[i0, i1] -> [i0] : i0 >= 1 and i0 <= M and i1 >= 1 and i1 <= -1 + i0; S2[i0] -> [0] : i0 >= 1 and i0 <= M }
[M] -> {  : M >= 2 }
[M] -> { [i] -> separate[o0] }