Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:17 2013

Optimize a model with 228 rows, 644 columns and 1682 nonzeros
Presolve removed 208 rows and 589 columns
Presolve time: 0.01s
Presolved: 20 rows, 55 columns, 110 nonzeros
Variable types: 41 continuous, 14 integer (14 binary)

Root relaxation: objective 5.420106e+03, 5 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 5420.10604    0    1          - 5420.10604     -      -    0s
H    0     0                    5441.6169227 5420.10604  0.40%     -    0s
     0     0 5441.57484    0    2 5441.61692 5441.57484  0.00%     -    0s

Cutting planes:
  Cover: 1

Explored 0 nodes (13 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.441616922671e+03, best bound 5.441574836777e+03, gap 0.0008%