Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:56 2013

Optimize a model with 1140 rows, 4020 columns and 10010 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.10s
Presolved: 1120 rows, 3990 columns, 7980 nonzeros
Variable types: 3000 continuous, 990 integer (990 binary)

Root relaxation: objective 1.836170e+04, 135 iterations, 0.00 seconds

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

     0     0 18361.7044    0    1          - 18361.7044     -      -    0s
     0     0 18362.8838    0    2          - 18362.8838     -      -    0s
     0     0 18362.8838    0    2          - 18362.8838     -      -    0s
H    0     0                    19131.784475 18362.8838  4.02%     -    0s
     0     2 18365.9631    0    2 19131.7845 18365.9631  4.00%     -    0s
*   14    13               8    18429.232912 18382.4688  0.25%   5.3    0s
*   16    11               9    18429.179415 18382.4688  0.25%   5.0    0s
*   45    27              18    18420.422271 18389.9330  0.17%   3.6    0s
*  100    48              12    18420.015771 18396.0155  0.13%   3.3    0s
*  158    44              13    18419.246789 18397.5455  0.12%   3.2    0s
*  160    44              14    18418.270942 18397.5455  0.11%   3.2    0s
*  162    43              15    18418.263500 18397.5455  0.11%   3.2    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 440 nodes (1651 simplex iterations) in 0.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.841826350024e+04, best bound 1.841644746717e+04, gap 0.0099%