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Proof step 4 from proof validFields-put (previous step)

rk ∈ st ⊦ unique_al(fis) ∧ ¬ _type ∈ fis ∧ ¬ _length ∈ fis ∧ hasKeys(r, fis .keys, st[rk, val]) ↔ validFields(r, fis, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ validFields(r, fis, st) ↔ unique_al(fis) ∧ ¬ _type ∈ fis ∧ ¬ _length ∈ fis ∧ hasKeys(r, fis .keys, st)
Proof step 3:
⊦ rk ∈ st → (hasKeys(r, sks, st[rk, val]) ↔ hasKeys(r, sks, st))

Rule argument

[crewrite-arg: validFields, F, [st, fis, r] → [st, fis, r]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, fis, r)]]