simp at h
case base
nfa : NFA
i l : ℕ
c : Char
start : ℕ
cs' : List Char
i✝ : ℕ
h✝ : start ≤ i✝
cs : List Char
h : cs ++ [c] = []
⊢ ∃ j k, nfa.pathIn start i✝ j cs ∧ k ∈ nfa.charStep j c ∧ i✝ ∈ nfa.εClosure k
no goals