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Proof step 2 from proof eqmode (conclusion)

⊦ st =mode st

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ st =mode st0 ↔ st = st0 ∨ (∃ r, class1. st = (st0[r -- _type, typeval(mkclasstype(class1))][_mode, throw(r, mkclasstype(class1))]) ∧ newref(r, st0))

Rule argument

[crewrite-arg: equalXmode, F, [st0, st] → [st, st]]

Additional information

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