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Proof step 13 from proof is_obj-no-refval-01 (previous step)

mkfs(str2 .class, mkarraytype(ty), str1 .field) ' ∈ instfields(st[r -- _type] .type .class), class+∃(str, st[r -- _type] .type .class), is_obj(r, st) ⊦ is_referencevalue(st[r -- mkfs(str2 .class, mkarraytype(ty), str1 .field) ']), is_abstract(st[r -- _type] .type .class)

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 12:
mkfs(str2 .class, mkarraytype(ty), str1 .field) ' ∈ instfields(st[r -- _type] .type .class), class+∃(str, st[r -- _type] .type .class), 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) ⊦ is_referencevalue(st[r -- mkfs(str2 .class, mkarraytype(ty), str1 .field) ']), is_abstract(st[r -- _type] .type .class)

Rule argument

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

Additional information

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