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Proof step 14 from proof add-at-neg (conclusion)

⊦ i < 0 → (addarray(r, ty, vals, st)[r -- i ']) = st[r -- i ']

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
i < 0 ⊦ (addarray(r, ty, vals, st)[r -- i ']) = st[r -- i ']

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ j < i ∧ i ≤ 0 → j < 0])]]