| i + j ≤ i0, i ≤ i0 ⊦ bytevalues(getarray(r0, i, j, st[r0 -- i0 ', val])) = bytevalues(getarray(r0, i, j, st)) |
⊦ i0 < i ∨ i + j ≤ i0 → getarray(r, i, j, st[r -- i0 ', val]) = getarray(r, i, j, st)
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i + j = j + i])], [EXTRATERMS : (val, i0, st, j, i, r0)]]