Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:49:28 2013

Optimize a model with 2860 rows, 676260 columns and 1352260 nonzeros
Presolve time: 2.84s
Presolved: 2860 rows, 676260 columns, 1352260 nonzeros
Variable types: 676000 continuous, 260 integer (260 binary)

Root relaxation: objective 6.102914e+05, 22697 iterations, 4.34 seconds

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

     0     0 610291.361    0    5          - 610291.361     -      -    7s
H    0     0                    630789.00000 610291.361  3.25%     -    9s
H    0     0                    610590.00000 610291.361  0.05%     -   11s
     0     0 610418.481    0    5 610590.000 610418.481  0.03%     -   13s
     0     0 610418.481    0    5 610590.000 610418.481  0.03%     -   17s
     0     0 610418.937    0    5 610590.000 610418.937  0.03%     -   19s
     0     0 610422.371    0    4 610590.000 610422.371  0.03%     -   20s
     0     0 610423.596    0    3 610590.000 610423.596  0.03%     -   20s
     0     0 610424.429    0    3 610590.000 610424.429  0.03%     -   20s
     0     0 610430.523    0    3 610590.000 610430.523  0.03%     -   21s
     0     0 610430.523    0    3 610590.000 610430.523  0.03%     -   21s
     0     0 610430.523    0    3 610590.000 610430.523  0.03%     -   22s
     0     0 610519.699    0    3 610590.000 610519.699  0.01%     -   23s
     0     0 610536.158    0    3 610590.000 610536.158  0.01%     -   24s

Cutting planes:
  Implied bound: 101
  Flow cover: 1

Explored 0 nodes (34601 simplex iterations) in 24.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.105900000000e+05, best bound 6.105361579603e+05, gap 0.0088%