Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:04:28 2013

Optimize a model with 300 rows, 6220 columns and 46170 nonzeros
Presolve removed 10 rows and 1130 columns
Presolve time: 0.07s
Presolved: 290 rows, 5090 columns, 42170 nonzeros
Variable types: 5010 continuous, 80 integer (80 binary)

Root relaxation: objective 1.791602e+04, 157 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   15          - 17916.0191     -      -    0s
     0     0 17916.5551    0   15          - 17916.5551     -      -    0s
     0     0 17916.6771    0   15          - 17916.6771     -      -    0s
     0     0 17916.8597    0   15          - 17916.8597     -      -    0s
     0     0 17916.8597    0   15          - 17916.8597     -      -    0s
H    0     0                    18010.150756 17916.8597  0.52%     -    0s
     0     2 17920.2502    0   10 18010.1508 17920.2502  0.50%     -    0s
*   22    17              22    17995.318519 17969.2629  0.14%   6.8    0s
*   37    14              12    17984.798210 17982.2095  0.01%   4.8    0s
*   45    11              10    17984.443210 17982.2237  0.01%   4.2    0s
*   63    10              13    17984.224091 17982.4300  0.01%   3.5    0s

Cutting planes:
  Flow cover: 3

Explored 64 nodes (575 simplex iterations) in 0.36 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798422409141e+04, best bound 1.798243002227e+04, gap 0.0100%