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Proof step 4 from proof isobj-put-samefield-02 (previous step)

st[r -- _type] = typeval(mkclasstype(class)), goodfieldsandtypes(r, instfields(class), st), okval(val, ty), r -- _type ∈ st, r ∈ st ⊦ mkfs(class0, ty, fieldvar) ' = _type, r = jvmref, goodfieldsandtypes(r, instfields(class), st[r -- mkfs(class0, ty, fieldvar) ', val])

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[speclemmaarg: , ¬ goodfieldsandtypes (r, sks, st[r0 -- mkfs(class0, ty, fieldvar) ', val]) ∧ mkfs(class0, ty, fieldvar) ' ≠ _type ∧ oktype(val, ty, st) → ¬ goodfieldsandtypes(r, sks, st) ,[r, sks, st, r0, class0, ty, fieldvar, val] → [r, instfields(class), st, r, class0, ty, fieldvar, val] ,F ,okfuns , ,gfts-not-01 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ oktype(val, ty, st) ↔ okval(val, ty)])], [EXTRATERMS : (r, instfields(class), st, r, class0, ty, fieldvar, val)]]