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Proof step 6 from proof validfieldlist-superset (previous step)

validfield(str, r, sk, st) ∧ st ⊆ st0, validfieldlist(str, r, sks0, st), validfield(str, r, sk, st), st ⊆ st0, ∀ str, r, st, st0. validfieldlist(str, r, sks0, st) ∧ st ⊆ st0 → validfieldlist(str, r, sks0, st0) ⊦ true ∧ validfieldlist(str, r, sks0, st0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
validfieldlist(str, r, sks0, st), validfield(str, r, sk, st), st ⊆ st0, ∀ str, r, st, st0. validfieldlist(str, r, sks0, st) ∧ st ⊆ st0 → validfieldlist(str, r, sks0, st0) ⊦ validfieldlist(str, r, sks0, st0)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]