| 0 ≤ j, j < i ⊦ (addarray(r, ty, i, st)[r -- j ']) = initial_value(ty) |
⊦ addarray(r, ty, i, st) = addarray(r, initial_value(ty), i, st[r -- _type, typeval(mkarraytype(ty))][r -- _length, intval(i)])
⊦ 0 ≤ j ∧ j < i → (addarray(r, val, i, st)[r -- j ']) = val
[[CONCRETESIMPRULES : ()]]