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Proof step 4 from proof validstatfields-rec (previous step)

sk = sk ∨ sk ∈ sks → validstatfield(str, sk, st), ∀ sk0. sk0 ∈ sks → validstatfield(str, sk0, st) ⊦ validstatfield(str, sk, st) ∧ (sk0 ∈ sks → validstatfield(str, sk0, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
validstatfield(str, sk, st), sk0 ∈ sks, ∀ sk0. sk0 ∈ sks → validstatfield(str, sk0, st) ⊦ validstatfield(str, sk0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]