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Proof step 9 from proof get-rest (previous step)

getarray(r, i, 2, st) = val + vals ∧ getarray(r, i, 2, st) ≠ [], ∀ i1, r, i, st. i→n(i1) < i→n(1) → (0 ≤ i1 → getarray(r, i, i1 + 1, st) .rest = getarray(r, i + 1, i1, st)) ⊦ vals = st[r -- (i + 1) '] '

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
⊦ getarray(r, i, j, st) = [] ↔ j ≤ 0
Proof step 8:
getarray(r, i, 2, st) = val ' + vals, val ∈ getarray(r, i, 2, st), ∀ i1, r, i, st. i→n(i1) < i→n(1) → (0 ≤ i1 → getarray(r, i, i1 + 1, st) .rest = getarray(r, i + 1, i1, st)) ⊦ vals = st[r -- (i + 1) '] '

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (vals + vals0) + vals1 = vals + vals0 + vals1], [CSIMPFORWARD : ⊦ val ' + vals = vals0 → val ∈ vals0], [CSIMPSEQ : ⊦ val + vals = val ' + vals])]]