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Proof step 5 from proof add-in-06 (previous step)

∀ sk, r, class1, st. sk ∈ fis0 → r -- sk ∈ addobj(r, class1, fis0, st) ⊦ sk ∈ fv + fis0 → r -- sk ∈ addobj(r, class1, fv + fis0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
sk ∈ fv ' + fis0, ∀ sk, r, class1, st. sk ∈ fis0 → r -- sk ∈ addobj(r, class1, fis0, st) ⊦ r -- sk ∈ addobj(r, class1, fv ' + fis0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ fv + fis = fv ' + fis])]]