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Proof step 10 from proof validstatfields-levelsubset (previous step)

level⊆(str, str0), validstatfields(str, sks, st) ⊦ validstatfields(str0, sks, st)

User applied rule structural induction

And obtained the following new goals

Proof step 1:
⊦ validstatfields(str, [], st)
Proof step 9:
∀ str, str0, st. level⊆(str, str0) ∧ validstatfields(str, sks0, st) → validstatfields(str0, sks0, st), level⊆(str, str0), validstatfields(str, sk + sks0, st) ⊦ validstatfields(str0, sk + sks0, st)

Rule argument

[VARWITHVARSEQSARG : sks, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : storekeys generated by [], +;])]]