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Proof step 6 from proof validstatfields-levelsubset (previous step)

validstatfield(str, sk, st) ∧ level⊆(str, str0), level⊆(str, str0), validstatfield(str, sk, st), validstatfields(str, sks0, st), ∀ str, str0, st. level⊆(str, str0) ∧ validstatfields(str, sks0, st) → validstatfields(str0, sks0, st) ⊦ true ∧ validstatfields(str0, sks0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
level⊆(str, str0), validstatfield(str, sk, st), validstatfields(str, sks0, st), ∀ str, str0, st. level⊆(str, str0) ∧ validstatfields(str, sks0, st) → validstatfields(str0, sks0, st) ⊦ validstatfields(str0, sks0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]