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Proof step 29 from proof putarray-addarray-override (previous step)

sk = i0 ', is_indexkey(sk), 0 ≤ i, i + n→i(# vals) ≤ n→i(# vals0) ⊦ r0 -- sk ∈ addarray(r, ty, vals0, st) ∨ r0 = r ∧ i ≤ i0 ∧ i0 < i + n→i(# vals) ↔ r0 -- sk ∈ addarray(r, ty, firstn(i→n(i), vals0) + vals + restn(i→n(i) + # vals, vals0), st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 28:
0 ≤ i, i + n→i(# vals) ≤ n→i(# vals0) ⊦ r0 -- i0 ' ∈ addarray(r, ty, vals0, st) ∨ r0 = r ∧ i ≤ i0 ∧ i0 < i + n→i(# vals) ↔ r0 -- i0 ' ∈ addarray(r, ty, firstn(i→n(i), vals0) + vals + restn(i→n(i) + # vals, vals0), st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_indexkey(i ')], [CSIMPSEQ : ⊦ i + j = j + i], [CSIMPSEQ : ⊦ i + j + i0 = (i + j) + i0])]]