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Proof step 16 from proof junkref-put-other-fieldclass (previous step)

junkref(str, r, st[r0 -- fs ', val]), path∃(str, r, r0, st) ⊦ is_arraytype(st[r0 -- _type] .type), is_classtype(st[r0 -- _type] .type), r0 = jvmref, fs ' = _type, junkref(str, r, st), contains(str, st[r -- _type] .type, fs)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[speclemmaarg: , ¬ is_reftype(st[r0 -- _type] .type) ∧ r0 ≠ jvmref → ¬ path∃(str, r, r0, st) ,[st, r0, r, str] → [st, r0, r, str] ,F ,compatible , ,pathex-noreftype ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_classtype(ty) → ( is_reftype(ty) ↔ is_arraytype(ty))])], [EXTRATERMS : (st, r0, r, str)]]