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Proof step 24 from proof getintarray-in (previous step)

0 < st[r -- _length] .intval, 0 ≤ j, j < st[r -- _length] .intval ⊦ (getarray(r, 0, st[r -- _length] .intval, st)[i→n(j)]) .intval = st[r -- j '] .intval

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 23:
⊦ n→i(n) < j → (getarray(r, i, j, st)[n]) = st[r -- (i + n→i(n)) ']

Rule argument

[crewrite-arg: get-get , F , [n, st, j, i, r] → [i→n(j), st, st[r -- _length] .intval, 0, r] ]

Additional information

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