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