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Proof step 3 from proof okbar-01 (previous step)

okbytearray(r, st) ⊦ val2int(st[r -- _length]) = 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 2:
⊦ okarray(r, ty, st) → val2int(st[r -- _length]) = st[r -- _length] .intval

Rule argument

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

Additional information

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