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Proof step 6 from proof is_obj-notin-01 (previous step)

st[r -- _type] = typeval(mkclasstype(class)), r ∈ st, ∀ sk. sk ∈ instfields(class) → goodfieldandtype(r, sk, st), r -- _type ∈ st, class+∃(str, class), sk ∈ instfields(class) ⊦ r = jvmref, is_abstract(class), r -- sk ∈ st

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 3, [QUANTTERMLIST : (sk)]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ r -- sk ∈ st → ¬ goodfieldandtype(r, sk, st)])], [EXTRATERMS : (sk)]]