Proof step 21 from proof okarray-put-other (previous step)

User applied rule insert rewrite lemma

And obtained the following new goals

• Proof step 1:

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

• Proof step 20:

  ⊦ r = r1, okreftype(refval(r), mkarraytype(ty), st[r1 -- sk, val]) ∧ r ≠ jvmref ∧ r -- _length ∈ st[r1 -- sk, val] ∧ is_integervalue(st[r1 -- sk, val][r -- _length]) ∧ 0 ≤ (st[r1 -- sk, val][r -- _length]) .intval ∧ is_arrayref(r, (st[r1 -- sk, val][r -- _length]) .intval, st[r1 -- sk, val]) ∧ (∀ j. 0 ≤ j ∧ j < (st[r1 -- sk, val][r -- _length]) .intval → oktype(st[r1 -- sk, val][r -- j '], ty, st[r1 -- sk, val])) ↔ okarray(r, ty, st)

Rule argument

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r1 -- sk, val], ty, r)]]