Proof step 72 from proof okarray-union-03 (previous step)

User applied rule insert rewrite lemma

And obtained the following new goals

• Proof step 1:

  ⊦ okarray(val, ty, i, st) ↔ okreftype(val, mkarraytype(ty), st) ∧ val .refval ≠ jvmref ∧ (val .refval -- _length) × intval(i) ∈ st ∧ 0 ≤ i ∧ is_arrayref(val .refval, i, st) ∧ (∀ j. 0 ≤ j ∧ j < i → oktype(st[val .refval -- j '], ty, st))

• Proof step 71:

  okarray(val, ty, i, st) ⊦ okreftype(val, mkarraytype(ty), st0 ∪ st) ∧ val .refval ≠ jvmref ∧ (val .refval -- _length) × intval(i) ∈ st0 ∪ st ∧ 0 ≤ i ∧ is_arrayref(val .refval, i, st0 ∪ st) ∧ (∀ j. 0 ≤ j ∧ j < i → oktype((st0 ∪ st)[val .refval -- j '], ty, st0 ∪ st))

Rule argument

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st0 ∪ st, i, ty, val)]]