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Proof step 5 from proof good-field-subset (previous step)

st ⊆ st0, r -- mkfs(class, ty, fieldvar) ' ∈ st, r ∈ st ⊦ r -- mkfs(class, ty, fieldvar) ' ∈ st0 ∧ okval(st0[r -- mkfs(class, ty, fieldvar) '], ty) ↔ okval(st[r -- mkfs(class, ty, fieldvar) '], ty)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ rk ∈ st ∧ st ⊆ st1 → st1[rk] = st[rk]

Rule argument

[speclemmaarg: ,rk ∈ st ∧ st ⊆ st1 → st1[rk] = st[rk] ,[rk, st, st1] → [r -- mkfs(class, ty, fieldvar) ', st, st0] ,F ,store ,javastore ,superset-elem-eq ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ rk ∈ st ∧ ¬ rk ∈ st0 → ¬ st ⊆ st0])], [EXTRATERMS : (r -- mkfs(class, ty, fieldvar) ', st, st0)]]