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Proof step 6 from proof okbytearray-is-byte (previous step)

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

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ okbytearray(r, st) ∧ 0 ≤ i ∧ i < st[r -- _length] .intval → (¬ is_bytevalue(st[r -- i ']) ↔ false)
Proof step 5:
¬ (okbytearray(st[r -- sks] .refval, st) ∧ 0 ≤ i ∧ i < st[st[r -- sks] .refval -- _length] .intval), 0 < st[r -- (sks + _length ')] .intval, 0 ≤ i, i < st[r -- (sks + _length ')] .intval, okbytearray(st[r -- sks] .refval, st) ⊦ sks = [], is_bytevalue(st[st[r -- sks] .refval -- i '])

Rule argument

[crewrite-arg: okbar-byteval , F , [i, r, st] → [i, st[r -- sks] .refval, st] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (i, st[r -- sks] .refval, st)]]