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Proof step 4 from proof initsubset-validstatfields-forward (previous step)

init⊆(str, st, st0), ∀ sk. sk ∈ sks → validstatfield(str, sk, st), sk ∈ sks ⊦ validstatfield(str, sk, st0), validstatfield(str, sk, st)

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 2, [QUANTTERMLIST : (sk)]]

Additional information

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