fact: Fixpoint eval_formula_lform (f:LForm): eval_formula f <-> eval_formula (lform f).
imports: Cdcl.PatriciaR Cdcl.KeyInt Cdcl.ReifClasses Cdcl.Lib Bool Setoid ZifyBool ZArith Uint63 Lia List Cdcl.Syntax Cdcl.Clause