| is_primtype(ty), okarray(r, ty, st), r ∈ st, ¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ mkarraytype(ty) ⊦ r = jvmref |
⊦ is_valid_ref(str, r, st) ↔ is_obj(str, r, st) ∨ is_array(str, r, st)
is_primtype(ty), okarray(r, ty, st), r ∈ st, ¬ (is_obj(str, r, st) ∨ is_array(str, r, st)) ∨ ¬ st[r -- _type] .type ≤ mkarraytype(ty) ⊦ r = jvmref
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, r, str)]]