Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:48 2013

Optimize a model with 220 rows, 1170 columns and 2760 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.00s
Presolved: 210 rows, 1160 columns, 2650 nonzeros
Variable types: 1120 continuous, 40 integer (40 binary)

Root relaxation: objective 1.791602e+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 17916.0191    0    9          - 17916.0191     -      -    0s
     0     0 17923.4727    0    8          - 17923.4727     -      -    0s
     0     0 17923.4727    0    7          - 17923.4727     -      -    0s
H    0     0                    18033.954572 17923.4727  0.61%     -    0s
H    0     0                    17999.520498 17923.4727  0.42%     -    0s
     0     1 17976.1575    0    6 17999.5205 17976.1575  0.13%     -    0s
*    5     4               5    17983.774558 17982.7986  0.01%   4.6    0s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 6 nodes (262 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798377455783e+04, best bound 1.798279859767e+04, gap 0.0054%