existsi (atom default), (LEMCounterexampleModel).Frame
α : Type
inst✝ : Inhabited α
⊢ ∃ p, ∃ x ∈ 𝔽(𝗘𝗙𝗤), ¬ValidOnFrame x (p ⋎ (p ⟶ ⊥))
α : Type
inst✝ : Inhabited α
⊢ LEMCounterexampleModel.Frame ∈ 𝔽(𝗘𝗙𝗤) ∧ ¬ValidOnFrame LEMCounterexampleModel.Frame (atom default ⋎ (atom default ⟶ ⊥))