exact .base assm
case base
cs : List Char
nfa : NFA
start start' i i' : ℕ
inBounds :
  ∀ (i j : ℕ),
    start' ≤ i → ∀ (h₂ : i < nfa.nodes.size), (∃ c, j ∈ nfa[i].charStep c) ∨ j ∈ nfa[i].εStep → start ≤ j → start' ≤ j
i✝ : ℕ
h✝ : start ≤ i✝
assm : start' ≤ i✝
⊢ nfa.pathIn start' i✝ i✝ []
no goals