j = i + 1 ⊦ getintarray(r, 0, i, st[r -- j ', val]) = getintarray(r, 0, i, st)
[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ i0 = i - j ↔ i = i0 + j])], [EXTRATERMS : (j, 1, i)]]