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Proof step 9 from proof getbar-lastrec (previous step)

0 ≤ i0 ⊦ getbytearray(r, i, i0 + 1, st) = getbytearray(r, i, i0, st) + st[r -- (i + i0) '] .byteval '

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ getbytearray(r, i, j, st) = bytevalues(getarray(r, i, j, st))
Proof step 8:
0 ≤ i0 ⊦ bytevalues(getarray(r, i, i0 + 1, st)) = getbytearray(r, i, i0, st) + st[r -- (i + i0) '] .byteval '

Rule argument

[crewrite-arg: getByteArray, F, [st, j, i, r] → [st, i0 + 1, i, r]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, i0 + 1, i, r)]]