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Proof step 11 from proof junkref-subspec-samesubclasses (previous step)

st[r -- mkfs(class, ty, fieldvar) '] = refval(r0), same-subclasses-contains(st[r -- _type] .type .jtelemtype .class, str, str0), is_obj(str, r, st), is_obj(str0, r, st), mkfs(class, ty, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), junkrefs(str, r0 ' + refs1, st[r0 -- _type] .type, st), st[r0 -- _type] .type ≤ ty, ∀ str0, str, r1, st0, refs. # refs < # (r0 + refs1) → ( same-subclasses-contains(st0[r1 -- _type] .type .jtelemtype .class, str, str0) ∧ junkrefs(str, r1 ' + refs, st0[r1 -- _type] .type, st0) → junkref(str0, r1, st0)) ⊦ r0 = jvmref, r = jvmref, has_classtype(st[r0 -- _type] .type), same-subclasses-contains(st[r0 -- _type] .type .jtelemtype .class, str, str0), junkref(str0, r0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[speclemmaarg: , ¬ has_classtype(st[r -- _type] .type) ∧ junkref(str, r, st) → junkref(str1, r, st) ,[str, st, r, str1] → [str, st, r0, str0] ,F ,junkrefs , ,junkref-primarray-level-01 ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (str, st, r0, str0)]]