Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:01:32 2013

Optimize a model with 2100 rows, 101300 columns and 204000 nonzeros
Presolve removed 200 rows and 200 columns
Presolve time: 0.64s
Presolved: 1900 rows, 101100 columns, 203300 nonzeros
Variable types: 100700 continuous, 400 integer (400 binary)

Root relaxation: objective 8.570461e+05, 7568 iterations, 0.73 seconds

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

     0     0 857046.104    0    1          - 857046.104     -      -    1s
H    0     0                    879012.06458 857046.104  2.50%     -    1s
     0     0 857083.616    0    1 879012.065 857083.616  2.49%     -    2s
     0     0 857090.755    0    1 879012.065 857090.755  2.49%     -    2s
     0     0 857102.778    0    1 879012.065 857102.778  2.49%     -    2s
     0     0 857106.918    0    1 879012.065 857106.918  2.49%     -    2s
     0     0 857107.685    0    1 879012.065 857107.685  2.49%     -    2s
     0     0 857116.174    0    1 879012.065 857116.174  2.49%     -    3s
     0     0 857116.174    0    1 879012.065 857116.174  2.49%     -    3s
     0     0 857118.606    0    1 879012.065 857118.606  2.49%     -    3s
     0     0 857119.977    0    1 879012.065 857119.977  2.49%     -    4s
     0     0 857121.659    0    1 879012.065 857121.659  2.49%     -    4s
     0     0 857122.113    0    1 879012.065 857122.113  2.49%     -    4s
     0     0 857122.801    0    1 879012.065 857122.801  2.49%     -    5s
     0     0 857123.222    0    1 879012.065 857123.222  2.49%     -    5s
     0     0 857123.222    0    1 879012.065 857123.222  2.49%     -    5s
     0     2 857266.430    0    1 879012.065 857266.430  2.47%     -    6s
    25    27 859530.379   25    3 879012.065 858223.542  2.36%  73.8   10s
H   27    18                    862271.92178 858223.542  0.47%  68.9   10s
    71    24 861399.898   71    1 862271.922 858223.542  0.47%  48.8   15s
*  104    13              16    859216.39098 858413.538  0.09%  47.2   18s
   127    14 858708.905   11    1 859216.391 858617.155  0.07%  49.4   20s
*  162    28               9    859207.42663 858637.485  0.07%  42.3   21s
*  172    21              10    859185.93790 858753.068  0.05%  40.6   21s
*  190     9              15    859001.15552 858875.027  0.01%  37.7   21s

Cutting planes:
  Flow cover: 13

Explored 195 nodes (15716 simplex iterations) in 22.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.590011555227e+05, best bound 8.589590274305e+05, gap 0.0049%