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Proof step 3 from proof nouninit-undone (previous step)

initundone(class, st), nouninit(claset, st), class ∈ claset ⊦ claset = ∅, # claset = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ nouninit(claset, st) ↔ (∀ class. class ∈ claset → ¬ initundone(class, st))
Proof step 2:
initundone(class, st), ∀ class. class ∈ claset → ¬ initundone(class, st), class ∈ claset ⊦ claset = ∅, # claset = 0

Rule argument

[crewrite-arg: nouninit, F, [st, claset] → [st, claset]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, claset)]]