Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:51:52 2013

Optimize a model with 1900 rows, 101700 columns and 204100 nonzeros
Presolve removed 200 rows and 300 columns
Presolve time: 0.46s
Presolved: 1700 rows, 101400 columns, 202800 nonzeros
Variable types: 101000 continuous, 400 integer (400 binary)

Root relaxation: objective 8.570461e+05, 8754 iterations, 0.67 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 857083.871    0    1 879012.065 857083.871  2.49%     -    1s
     0     0 857092.639    0    1 879012.065 857092.639  2.49%     -    2s
     0     0 857104.523    0    1 879012.065 857104.523  2.49%     -    2s
     0     0 857106.406    0    1 879012.065 857106.406  2.49%     -    2s
     0     0 857109.604    0    1 879012.065 857109.604  2.49%     -    2s
     0     0 857114.092    0    1 879012.065 857114.092  2.49%     -    3s
     0     0 857116.348    0    1 879012.065 857116.348  2.49%     -    3s
     0     0 857118.448    0    1 879012.065 857118.448  2.49%     -    3s
     0     0 857120.320    0    1 879012.065 857120.320  2.49%     -    3s
     0     0 857121.933    0    1 879012.065 857121.933  2.49%     -    4s
     0     0 857123.550    0    1 879012.065 857123.550  2.49%     -    4s
     0     0 857123.674    0    1 879012.065 857123.674  2.49%     -    4s
     0     0 857124.158    0    1 879012.065 857124.158  2.49%     -    4s
     0     0 857124.228    0    1 879012.065 857124.228  2.49%     -    5s
     0     0 857124.228    0    1 879012.065 857124.228  2.49%     -    5s
     0     2 857600.516    0    1 879012.065 857600.516  2.44%     -    5s
    18    20 859133.836   18    1 879012.065 858217.999  2.37%  89.9   10s
H   54    18                    862271.92178 858217.999  0.47%  50.6   14s
    57    17 860502.509   57    1 862271.922 858217.999  0.47%  51.3   15s
H  108     9                    859216.39098 858413.538  0.09%  46.4   19s
   112     6 858436.754    3    1 859216.391 858436.754  0.09%  45.5   20s
H  162    12                    859207.42663 858735.087  0.05%  43.9   23s
*  178    10              14    859185.93790 858866.520  0.04%  41.6   23s
H  189     4                    859001.15552 858882.223  0.01%  40.1   24s

Cutting planes:
  Flow cover: 15

Explored 190 nodes (17158 simplex iterations) in 24.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.590011555227e+05, best bound 8.589372593434e+05, gap 0.0074%