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Proof step 4 from proof validval-field-byteval (previous step)

¬ is_referencevalue(byteval(by)) ⊦ okval(byteval(by), mkfs(class, ty, fieldvar) .type) ∧ mkfs(class, ty, fieldvar) ' ≠ _length ↔ ty = byte_type

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
⊦ okval(byteval(by), ty) ∧ mkfs(class, ty, fieldvar) ' ≠ _length ↔ ty = byte_type

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_referencevalue(byteval(by))], [CSIMPSEQ : ⊦ mkfs(class, ty, fieldvar) .type = ty])]]