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Proof step 8 from proof add-notin (previous step)

sk ≠ fv .1, ∀ sk, r, class, st. sk = _type ∨ (addobj(r, class, fis0, st)[r -- sk]) = st[r -- sk] ∨ sk ∈ fis0 ⊦ (addobj(r, class, fis0, st)[r -- sk]) = st[r -- sk], sk = _type, sk ∈ fv ', sk ∈ fis0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
∀ sk, r, class, st. sk = _type ∨ (addobj(r, class, fis0, st)[r -- sk]) = st[r -- sk] ∨ sk ∈ fis0 ⊦ sk = fv .1, sk = _type, (addobj(r, class, fis0, st)[r -- sk]) = st[r -- sk], sk ∈ fis0, sk ∈ fv '

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]