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Proof step 4 from proof validstatfields-union (previous step)

sk ∈ statfields(class), tdname∃(str, class), initdone(class, st0), ∀ class, sk. tdname∃(str, class) ∧ initdone(class, st0) ∧ sk ∈ statfields(class) → validstatfield(str, sk, st0) ⊦ jvmref ∈ st, validstatfield(str, sk, st ∪ st0)

Heuristic quantifier closing applied rule all left

And obtained the following new goals

Proof step 3:
⊦ validstatfield(str, sk, st0) ∧ ¬ jvmref ∈ st → validstatfield(str, sk, st ∪ st0)

Rule argument

[EXRARG : pos: left 4, [QUANTTERMLIST : (class, sk)]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (class, sk)]]