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Proof step 3 from proof classof-01 (previous step)

⊦ sk = _type, st[r -- _type] = typeval(mkclasstype(class1)) ∧ r ≠ jvmref ∧ r -- _type ∈ st[r0 -- sk, val] ↔ classof(r, class1, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ classof(r, class1, st) ↔ r ≠ jvmref ∧ r -- _type ∈ st ∧ st[r -- _type] = typeval(mkclasstype(class1))

Rule argument

[crewrite-arg: classOf, F, [st, class1, r] → [st, class1, r]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ rk ∈ st → st[rk] = ∅[rk]], [CSIMPSEQ : ⊦ rk ∈ st[rk0, val] ↔ rk = rk0 ∨ rk ∈ st], [CSIMPSEQ : ⊦ r -- sk = r0 -- sk0 ↔ r = r0 ∧ sk = sk0], [CSIMPSEQ : ⊦ r -- sk = r0 -- sk0 ↔ ¬ ¬ (r = r0 ∧ sk = sk0)])], [EXTRATERMS : (st, class1, r)]]