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Proof step 4 from proof okclass-02 (previous step)

classof(r, class1, st), r ∈ st ⊦ r = jvmref, reftypep(refval(r), st) ∧ (refval(r) .refval ≠ jvmref → refval(r) .refval -- _type ∈ st ∧ st[refval(r) .refval -- _type] = typeval(mkclasstype(class1)))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
classof(r, class1, st), r ∈ st ⊦ r = jvmref, r -- _type ∈ st ∧ st[r -- _type] = typeval(mkclasstype(class1))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ refval(r) .refval = r], [CSIMPSEQ : ⊦ r ∈ st → reftypep(refval(r), st)])]]