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Proof step 24 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), ∀ 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, junkrefs(str, r0 ' + refs1, st[r0 -- _type] .type, st), st[r0 -- _type] .type ≤ ty, junkref(str0, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[speclemmaarg: , r ≠ jvmref ∧ (¬ is_valid_ref(str, r, st) ∨ ¬ st[r -- _type] .type ≤ ty) → junkrefs(str, r ' + refs, ty, st) ,[st, ty, refs, r, str] → [st, st[r0 -- _type] .type, refs1, r0, str] ,F ,junkrefs , ,junkrefs-is-junk ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, st[r0 -- _type] .type, refs1, r0, str)]]