| ⊦ addarray(r, ty, i, st) .refs = st .refs ++ r |
⊦ addarray(r, ty, i, st) = addarray(r, initial_value(ty), i, st[r -- _type, typeval(mkarraytype(ty))][r -- _length, intval(i)])
⊦ addarray(r, initial_value(ty), i, st[r -- _type, typeval(mkarraytype(ty))][r -- _length, intval(i)]) .refs = st .refs ++ r
[[CONCRETESIMPRULES : ()]]