gap of projection of complete graphs is not so large??

bipartite.sage

@@ -5,6 +5,7 @@ from sage.matroids.all import *
 from sage.graphs.all import *
 import gurobipy as gp
 from gurobipy import GRB
+from fractions import Fraction
 
 env = gp.Env(empty=True)
 env.setParam("OutputFlag",0)
@@ -57,5 +58,5 @@ for N in range(2,10):
             if gap > maxgap:
                 maxgap = gap
                 maxcol = v
-
-        print(f"K_{{{N},{M}}}, gap = {maxgap}, column = {maxcol}")
+        frac=str(Fraction(maxgap).limit_denominator(m))
+        print(f"K_{{{N},{M}}}   gap ≈ {frac:<8} column = {maxcol}")