Proof step 19 from proof ac-in-03-02 (previous step)
r -- sk ∈ addclass(class1, fis0, st), r ∈ st, ∀ r, sk, class1, st. r -- sk ∈ addclass(class1, fis0, st) ∧ r ∈ st → r = jvmref ∨ r -- sk ∈ st
⊦
class = class1, r = jvmref, r -- sk ∈ st
Heuristic quantifier closing applied rule all left