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Proof step 3 from proof getbar-restn-03 (previous step)

n→i(n) ≤ st[r -- _length] .intval ⊦ restn(n, getbytearray(r, 0, st[r -- _length] .intval, st)) = getbytearray(r, n→i(n), st[r -- _length] .intval - n→i(n), st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ n→i(n) ≤ j ∧ 0 ≤ i → restn(n, getbytearray(r, i, j, st)) = getbytearray(r, i + n→i(n), j - n→i(n), st)

Rule argument

[crewrite-arg: bar-restn , F , [st, j, i, r, n] → [st, st[r -- _length] .intval, 0, r, n] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i ≤ j → (¬ ¬ j < i ↔ false)], [CSIMPSEQ : ⊦ ¬ i ≤ j ↔ j < i], [CSIMPSEQ : ⊦ i + 0 = i], [CSIMPSEQ : ⊦ i + j + i0 = (i + j) + i0], [CSIMPSEQ : ⊦ i + j = j + i])], [EXTRATERMS : (st, st[r -- _length] .intval, 0, r, n)]]