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Proof step 5 from proof init-set (previous step)

init(claset, st), class0 ∈ claset ⊦ claset = ∅, # claset = 0, class = class0, initdone(class0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ init(claset, st) ↔ (∀ class. class ∈ claset → initdone(class, st))
Proof step 4:
∀ class. class ∈ claset → initdone(class, st), class0 ∈ claset ⊦ claset = ∅, # claset = 0, class = class0, initdone(class0, st)

Rule argument

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

Additional information

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