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

i + i0 < st[r -- _length] .intval, okarray(r, byte_type, st), 0 ≤ i + i0, 0 < st[r -- _length] .intval, r ∈ st ⊦ byteval(st[r -- (i + i0) '] .byteval) = st[r -- (i + i0) '], r = jvmref

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ 0 ≤ i + i0 ∧ i0 ≤ j ∧ i + j < st[r -- _length] .intval ∧ okarray(r, byte_type, st) → byteval(st[r -- (i + i0) '] .byteval) = st[r -- (i + i0) ']

Rule argument

[crewrite-arg: byteval, F, [i, i0, j, st, r] → [i, i0, i0, st, r]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i + j + i0 = (i + j) + i0], [CSIMPSEQ : ⊦ i + j = j + i], [CSIMPSEQ : ⊦ ¬ i ≤ j ↔ j < i], [CSIMPSEQ : ⊦ i ≤ j → (¬ ¬ j < i ↔ false)], [CSIMPSEQ : ⊦ ¬ i < i], [CSIMPSEQ : ⊦ ¬ i < j ↔ j ≤ i], [CSIMPSEQ : ⊦ i < j → (¬ ¬ j ≤ i ↔ false)])], [EXTRATERMS : (i, i0, i0, st, r)]]