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Proof step 9 from proof add-in-04 (previous step)

r -- sk ∈ addobj(r0, class1, fv ' + fis0, st), r ∈ st, ∀ r, sk, r0, class1, st. r -- sk ∈ addobj(r0, class1, fis0, st) ∧ r ∈ st → r = r0 ∨ r -- sk ∈ st ⊦ r = r0, r -- sk ∈ st

User applied rule structural induction

And obtained the following new goals

Proof step 8:
⊦ r -- sk0 ∈ addobj(r0, class1, (sk × val) ' + fis0, st) ∧ r ∈ st ∧ (∀ r, sk, r0, class1, st. r -- sk ∈ addobj(r0, class1, fis0, st) ∧ r ∈ st → r = r0 ∨ r -- sk ∈ st) → r = r0 ∨ r -- sk0 ∈ st

Rule argument

[VARWITHFMAVARSARG : fv, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : fieldvalue generated by ×;])]]