Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:43 2013

Optimize a model with 240 rows, 1320 columns and 2810 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.00s
Presolved: 220 rows, 1290 columns, 2580 nonzeros
Variable types: 1200 continuous, 90 integer (90 binary)

Root relaxation: objective 1.791602e+04, 118 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    3          - 17916.0191     -      -    0s
     0     0 17928.9278    0    3          - 17928.9278     -      -    0s
     0     0 17930.1616    0    4          - 17930.1616     -      -    0s
     0     0 17930.1616    0    4          - 17930.1616     -      -    0s
     0     0 17930.1616    0    4          - 17930.1616     -      -    0s
H    0     0                    17999.520498 17930.1616  0.39%     -    0s
     0     2 17946.6536    0    3 17999.5205 17946.6536  0.29%     -    0s
*    5     4               3    17984.059480 17970.9954  0.07%   5.0    0s
*    8     2               3    17983.774558 17982.3984  0.01%   4.1    0s

Cutting planes:
  Gomory: 3
  Flow cover: 6

Explored 9 nodes (208 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798377455783e+04, best bound 1.798239837766e+04, gap 0.0077%