∀ (ctx : Int.Linear.Context) (lhs rhs : Int.Linear.Expr) (p : Int.Linear.Poly),
  Int.Linear.norm_eq_cert lhs rhs p = true →
    ¬Int.Linear.Expr.denote ctx lhs = Int.Linear.Expr.denote ctx rhs → ¬Int.Linear.Poly.denote' ctx p = 0