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Proof step 7 from proof getar-at (conclusion)

⊦ is_bytevalue(getarray(r, i, j, st)[n]) ∧ n→i(n) < j → (getarray(r, i, j, st)[n]) = byteval(getbytearray(r, i, j, st)[n])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ n→i(n) < j → (getarray(r, i, j, st)[n]) = st[r -- (i + n→i(n)) ']
Proof step 2:
⊦ getbytearray(r, i, j, st) = bytevalues(getarray(r, i, j, st))
Proof step 6:
n→i(n) < j, is_bytevalue(st[r -- (i + n→i(n)) ']), 0 < j ⊦ st[r -- (i + n→i(n)) '] = byteval(bytevalues(getarray(r, i, j, st))[n])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ n→i(m) < j → 0 < j])]]