fact: Definition merge_clause (cl1 cl2 : clause) : clause := let (cln1,clp1) := split_clause cl1 in let (cln2,clp2) := split_clause cl2 in cln1 ++ cln2 ++ clp1 ++ clp2.
imports: ZArith List Bool Lia Morphisms Cdcl.Syntax Cdcl.Lib Cdcl.Lit Cdcl.Clause