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Proof step 10 from proof contains-array (conclusion)

⊦ ¬ contains(str, ty ' + tys .rest) ∧ tys ≠ [] → ¬ contains(str, mkarraytype(ty) ' + tys)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
contains(str, mkarraytype(ty) ' + tys) ⊦ tys = [], contains(str, ty ' + tys .rest)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]