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Proof step 8 from proof byteval (previous step)

r ∈ st, 0 ≤ i + i0, okarray(r, byte_type, st), i + j < st[r -- _length] .intval, i0 ≤ j ⊦ r = jvmref, byteval(st[r -- (i + i0) '] .byteval) = st[r -- (i + i0) '], is_bytevalue(st[r -- (i + i0) '])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ 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 7:
r ∈ st, 0 ≤ i + i0, okreftype(refval(r), mkarraytype(byte_type), 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 '], byte_type, st)), i + j < st[r -- _length] .intval, i0 ≤ j ⊦ r = jvmref, byteval(st[r -- (i + i0) '] .byteval) = st[r -- (i + i0) '], is_bytevalue(st[r -- (i + i0) '])

Rule argument

[crewrite-arg: okarrayNotNull, F, [st, ty, r] → [st, byte_type, r]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, byte_type, r)]]