clear a1
case h.h.mp
α : Type
inst✝ : DecidableEq α
p q : ℕ
a1 : ∃ stop_state_list, (p = 0 ∧ stop_state_list = [1]) ∧ q ∈ stop_state_list
stop_state_list : List ℕ
a2 : (p = 0 ∧ stop_state_list = [1]) ∧ q ∈ stop_state_list
⊢ p = 0 ∧ q = 1
case h.h.mp
α : Type
inst✝ : DecidableEq α
p q : ℕ
stop_state_list : List ℕ
a2 : (p = 0 ∧ stop_state_list = [1]) ∧ q ∈ stop_state_list
⊢ p = 0 ∧ q = 1