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Proof step 24 from proof junkref-class-02 (previous step)

fs ' ∈ instfields(st[r -- _type] .type .class), is_reftype(fs .type), is_obj(str, r, st), is_referencevalue(st[r -- fs ']), junkref(str, st[r -- fs '] .refval, st) ∨ ¬ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ⊦ st[r -- fs '] .refval = jvmref, ∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ']) ∧ st[r -- fs '] .refval ≠ jvmref ∧ (¬ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ∨ junkref(str, st[r -- fs '] .refval, st))

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 23:
fs = mkfs(class, ty, fieldvar), fs ' ∈ instfields(st[r -- _type] .type .class), is_reftype(ty), is_obj(str, r, st), is_referencevalue(st[r -- fs ']), junkref(str, st[r -- fs '] .refval, st) ∨ ¬ st[st[r -- fs '] .refval -- _type] .type ≤ ty ⊦ st[r -- fs '] .refval = jvmref, ∃ fs. fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ']) ∧ st[r -- fs '] .refval ≠ jvmref ∧ (¬ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ∨ junkref(str, st[r -- fs '] .refval, st))

Rule argument

[speclemmaarg: , class = fs .class ∧ ty = fs .type ∧ fieldvar = fs .field ↔ fs = mkfs(class, ty, fieldvar) ,[fs, class, ty, fieldvar] → [fs, class, ty, fieldvar] ,T ,fieldspec , ,elim ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ class = fs .class ∧ ty = fs .type ∧ fieldvar = fs .field ↔ fs = mkfs(class, ty, fieldvar)])], [EXTRATERMS : (fs, class, ty, fieldvar)]]