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Proof step 20 from proof compatfields-mode (previous step)

sk .fs = mkfs(class0, ty, fieldvar), is_fskey(sk), r -- sk ∈ st, sk ∈ instfields(class), r ∈ st, compat(str, st[r -- sk], ty, st) ⊦ r = jvmref, compat(str, st[r -- sk], ty, st[_mode, val])

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 19:
sk = fs ', fs = mkfs(class0, ty, fieldvar), is_fskey(sk), r -- sk ∈ st, sk ∈ instfields(class), r ∈ st, compat(str, st[r -- sk], ty, st) ⊦ r = jvmref, compat(str, st[r -- sk], ty, st[_mode, val])

Rule argument

[speclemmaarg: ,is_fskey(sk) → (fs = sk .fs ↔ sk = fs ') ,[sk, fs] → [sk, fs] ,T ,storekey , ,elim-03 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_fskey(sk) → (fs = sk .fs ↔ sk = fs ')])], [EXTRATERMS : (sk, fs)]]