refine ⟨⟨aaa, δ⟩, ⟨_in_Hβ, ?_⟩⟩
ψ : Formula
W : Type
M : KripkeModel W
w : W
α β : Program
δ : List Program
Gs : List Formula
Gγ_in : (Gs, ε) ∈ H α
aaa : List Formula
w_Con : evaluate M w (Con (Yset (Gs ∪ aaa, δ) ψ))
_in_Hβ : (aaa, δ) ∈ H β
⊢ ∃ Fδ ∈ H β, evaluate M w (Con (Yset Fδ ψ))
ψ : Formula
W : Type
M : KripkeModel W
w : W
α β : Program
δ : List Program
Gs : List Formula
Gγ_in : (Gs, ε) ∈ H α
aaa : List Formula
w_Con : evaluate M w (Con (Yset (Gs ∪ aaa, δ) ψ))
_in_Hβ : (aaa, δ) ∈ H β
⊢ evaluate M w (Con (Yset (aaa, δ) ψ))