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Proof step 17 from proof addclass-validFields (previous step)

⊦ r = jvmref, unique_al(fis) ∧ ¬ _type ∈ fis ∧ ¬ _length ∈ fis ∧ hasKeys(r, fis .keys, addclass(class, fis0, st)) ↔ unique_al(fis) ∧ ¬ _type ∈ fis ∧ ¬ _length ∈ fis ∧ hasKeys(r, fis .keys, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 16:
unique_al(fis) ⊦ r = jvmref, hasKeys(r, fis .keys, addclass(class, fis0, st)) ↔ hasKeys(r, fis .keys, st), _length ∈ fis, _type ∈ fis

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]