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Proof step 15 from proof validstatfields-put-norefval-field-better (previous step)

fs = mkfs(class, ty, fieldvar), okval(val, ty), validstatfields(str, st) ⊦ fs ' = _length, is_referencevalue(val), validstatfields(str, st[r -- fs ', val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 14:
okval(val, ty), validstatfields(str, st) ⊦ mkfs(class, ty, fieldvar) ' = _length, is_referencevalue(val), validstatfields(str, st[r -- mkfs(class, ty, fieldvar) ', val])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]