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Proof step 11 from proof validref-put-norefval (previous step)

sk = fs ', validref(str, r, ty, st), is_fskey(sk), okval(val, fs .type) ⊦ sk = _length, fs .type = void_type, validref(str, r, ty, st[r1 -- sk, val]), is_referencevalue(val)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
validref(str, r, ty, st), okval(val, fs .type) ⊦ fs ' = _length, fs .type = void_type, validref(str, r, ty, st[r1 -- fs ', val]), is_referencevalue(val)

Rule argument

[emptyarg]

Additional information

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