fact: Definition is_classic_lit (l:literal) : bool := match l with | POS _ => true | NEG f => f.(is_dec) end.
imports: Cdcl.PatriciaR Cdcl.KeyInt Cdcl.ReifClasses Cdcl.Lib Bool Setoid ZifyBool ZArith Uint63 Lia List Cdcl.Syntax Cdcl.Clause