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Proof step 21 from proof getbar-subset (previous step)

r -- _length ∈ st, okbytearray(r, st), st ⊆ st0, j < st[r -- _length] .intval, r ∈ st, 0 ≤ j, 0 < st[r -- _length] .intval ⊦ noval .byteval = st0[r -- j '] .byteval, r -- j ' ∈ st

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ okbytearray(r, st) ↔ okarray(r, byte_type, st)
Proof step 20:
r -- _length ∈ st, okarray(r, byte_type, st), st ⊆ st0, j < st[r -- _length] .intval, r ∈ st, 0 ≤ j, 0 < st[r -- _length] .intval ⊦ noval .byteval = st0[r -- j '] .byteval, r -- j ' ∈ st

Rule argument

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

Additional information

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