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Proof step 31 from proof junkrefs-union (previous step)

is_obj(str, r, st), (st0 ∪ st)[r -- _type] .type ≤ ty, st[r -- _type] .type ≤ ty, mkfs(class, ty1, fieldvar) ' ∈ instfields((st0 ∪ st)[r -- _type] .type .class), is_referencevalue((st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) ']), junkrefs(str, (st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, ty1, st0 ∪ st), ∀ str0, ty0, st1, st2. junkrefs(str0, (st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, ty0, st1 ∪ st2) → junkrefs(str0, (st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, ty0, st2) ⊦ r = jvmref, ∃ fs0. fs0 ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs0 ']) ∧ (st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) '] .refval = st[r -- fs0 '] .refval ∧ junkrefs(str, (st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, fs0 .type, st)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 30:
(st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) '] = refval(r0), is_obj(str, r, st), (st0 ∪ st)[r -- _type] .type ≤ ty, st[r -- _type] .type ≤ ty, mkfs(class, ty1, fieldvar) ' ∈ instfields((st0 ∪ st)[r -- _type] .type .class), is_referencevalue((st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) ']), junkrefs(str, r0 ' + refs, ty1, st0 ∪ st), ∀ str0, ty0, st1, st2. junkrefs(str0, r0 ' + refs, ty0, st1 ∪ st2) → junkrefs(str0, r0 ' + refs, ty0, st2) ⊦ r = jvmref, ∃ fs0. fs0 ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs0 ']) ∧ r0 = st[r -- fs0 '] .refval ∧ junkrefs(str, r0 ' + refs, fs0 .type, st)

Rule argument

[speclemmaarg: ,is_referencevalue(val) → (r = val .refval ↔ val = refval(r)) ,[val, r] → [(st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) '], r0] ,T ,javavalue , ,elim-13 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_referencevalue(val) → ( r = val .refval ↔ val = refval(r))])], [EXTRATERMS : ((st0 ∪ st)[r -- mkfs(class, ty1, fieldvar) '], r0)]]