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Proof step 9 from proof contains-array (previous step)

contains(str, mkarraytype(ty) ' + tys) ⊦ tys = [], contains(str, ty ' + tys .rest)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 8:
tys = ty0 + tys0, contains(str, mkarraytype(ty) ' + tys) ⊦ tys = [], contains(str, ty ' + tys0)

Rule argument

[speclemmaarg: tys ≠ [] ,ty = tys .first ∧ tys0 = tys .rest ↔ tys = ty + tys0 ,[tys, ty, tys0] → [tys, ty0, tys0] ,T ,list-data ,javatypes ,elim-list-c ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : tys ≠ [] ⊦ ty = tys .first ∧ tys0 = tys .rest ↔ tys = ty + tys0])], [EXTRATERMS : (tys, ty0, tys0)]]