simp only at incrementalChecker_success
case left.h_4
α : Type u_1
β : Type u_2
σ : Type u_3
inst✝² : DecidableEq α
inst✝¹ : Clause α β
inst✝ : Formula α β σ
f : σ
f_readyForRupAdd : readyForRupAdd f
f_readyForRatAdd : readyForRatAdd f
p : α → Bool
pf : p ⊨ f
action✝ : Action β α
ids✝ : Array Nat
aWellFormed : wellFormedAction (Action.del ids✝)
incrementalChecker_success : (Formula.delete f ids✝, out_of_proof).snd = success
⊢ False
no goals