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Proof step 8 from proof validFields-empty-01 (previous step)

unique_al(fis) ∧ ¬ _type ∈ fis ∧ ¬ _length ∈ fis ∧ hasKeys(r, fis .keys, ∅) ⊦ fis = []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
hasKeys(r, fis .keys, ∅), unique_al(fis) ⊦ fis = [], _type ∈ fis, _length ∈ fis

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]