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Proof step 17 from proof okbar-norefval (previous step)

st[r -- i '] = refval(r1), i < st[r -- _length] .intval, okbytearray(r, st), 0 ≤ i, 0 < st[r -- _length] .intval ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ okbytearray(r, st) ↔ okarray(r, byte_type, st)
Proof step 16:
st[r -- i '] = refval(r1), i < st[r -- _length] .intval, okarray(r, byte_type, st), 0 ≤ i, 0 < st[r -- _length] .intval ⊦

Rule argument

[crewrite-arg: okbytearray-01, F, [st, r] → [st, r]]

Additional information

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