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Proof step 10 from proof getarray-get (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ getarray(r, i, j, st) = [] ↔ j ≤ 0
Proof step 3:
⊦ 0 < j → # getarray(r, i, j, st) = i→n(j)
Proof step 9:
0 < st[r -- _length] .intval, n < i→n(st[r -- _length] .intval) ⊦ (getarray(r, 0, st[r -- _length] .intval, st)[n]) = st[r -- n→i(n) '], st[r -- _length] .intval = 0

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i→n(i) = 0 ↔ i = 0], [CSIMPFORWARD : ⊦ i < j ∧ 0 ≤ i → 0 < j], [CSIMPFORWARD : ⊦ m < n → n ≠ 0], [CSIMPSEQ : ⊦ ¬ i ≤ j ↔ j < i])]]