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Proof step 26 from proof compatobj-isobj (previous step)

st[r -- _type] .type = mkclasstype(class), class+∃(str, class), compatfields(str, r, instfields(class), st) ⊦ r = jvmref, is_obj(r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ 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 25:
st[r -- _type] .type = mkclasstype(class), class+∃(str, class), compatfields(str, r, instfields(class), st) ⊦ r = jvmref, 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)

Rule argument

[speclemmaarg: , 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) ,[st, r] → [st, r] ,F ,addfuns , ,is-any-object ]

Additional information

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