Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:48 2013

Optimize a model with 260 rows, 1590 columns and 6220 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.01s
Presolved: 250 rows, 1580 columns, 5710 nonzeros
Variable types: 1520 continuous, 60 integer (60 binary)

Root relaxation: objective 1.997658e+04, 125 iterations, 0.00 seconds

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

     0     0 19976.5790    0    6          - 19976.5790     -      -    0s
     0     0 19978.9192    0    8          - 19978.9192     -      -    0s
     0     0 19992.5955    0    7          - 19992.5955     -      -    0s
     0     0 19992.5955    0    7          - 19992.5955     -      -    0s
H    0     0                    20237.680152 19992.5955  1.21%     -    0s
     0     2 20107.3656    0    7 20237.6802 20107.3656  0.64%     -    0s
*   10     4               9    20158.515969 20152.6456  0.03%   8.9    0s
*   18     3              10    20158.428444 20156.4699  0.01%   5.4    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 19 nodes (422 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.015842844375e+04, best bound 2.015646986638e+04, gap 0.0097%