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Proof step 12 from proof validrefnotnull-put-byteval (previous step)

sk = fs ', fs .type = byte_type, is_bytevalue(st[r -- sk]), validrefnotnull(str, r0, ty, st), is_fskey(sk) ⊦ sk = _type, sk = _length, r = jvmref, r0 = jvmref, validrefnotnull(str, r0, ty, st[r -- sk, byteval(by)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 11:
fs .type = byte_type, is_bytevalue(st[r -- fs ']), validrefnotnull(str, r0, ty, st) ⊦ fs ' = _type, fs ' = _length, r = jvmref, r0 = jvmref, validrefnotnull(str, r0, ty, st[r -- fs ', byteval(by)])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(fs ')])]]