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Proof step 25 from proof validrefkeynotnull-put-byteval (previous step)

sk .fs .type = byte_type, is_bytevalue(st[r -- sk]), validrefkeynotnull(str, rk, ty, st), is_fskey(sk) ⊦ sk = _type, sk = _length, r = jvmref, validrefkeynotnull(str, rk, ty, st[r -- sk, byteval(by)])

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 24:
sk = fs ', fs .type = byte_type, is_bytevalue(st[r -- sk]), validrefkeynotnull(str, rk, ty, st), is_fskey(sk) ⊦ sk = _type, sk = _length, r = jvmref, validrefkeynotnull(str, rk, ty, st[r -- sk, byteval(by)])

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)]]