next ids =>
unfold incrementalLRATChecker at incrementalChecker_res_unsat
simp only at incrementalChecker_res_unsat
intro p pf
exact incrementalChecker_res_unsat p (limplies_delete p pf)
case right.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
action✝ : Action β α
ids✝ : Array Nat
aWellFormed : wellFormedAction (Action.del ids✝)
incrementalChecker_res_unsat : unsatisfiable α (incrementalLRATChecker f (Action.del ids✝)).fst
incrementalChecker_res : (Formula.delete f ids✝, out_of_proof).snd = out_of_proof
⊢ unsatisfiable α f
no goals