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Proof step 3 from proof isobj-notin-05 (previous step)

is_obj(r, st) ⊦ r ∈ st

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ is_obj(r, st) ↔ r ≠ jvmref ∧ r -- _type ∈ st ∧ is_typevalue(st[r -- _type]) ∧ is_classtype(st[r -- _type] .type) ∧ is_obj(r, st[r -- _type] .type .class, st)
Proof step 2:
⊦ ¬ r ∈ st → ¬ is_obj(r, class, st)

Rule argument

[crewrite-arg: is-any-object, F, [st, r] → [st, r]]

Additional information

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