Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:34:23 2013

Optimize a model with 2200 rows, 103800 columns and 214900 nonzeros
Presolve removed 100 rows and 1300 columns
Presolve time: 0.35s
Presolved: 2100 rows, 102500 columns, 212900 nonzeros
Variable types: 102100 continuous, 400 integer (400 binary)

Root relaxation: objective 7.672886e+05, 5736 iterations, 0.57 seconds

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

     0     0 767288.564    0    6          - 767288.564     -      -    1s
     0     0 767323.887    0    4          - 767323.887     -      -    1s
     0     0 767323.887    0    4          - 767323.887     -      -    2s
     0     0 767323.887    0    4          - 767323.887     -      -    2s
     0     0 767323.887    0    4          - 767323.887     -      -    2s
     0     0 767323.887    0    4          - 767323.887     -      -    3s
     0     0 767323.887    0    4          - 767323.887     -      -    4s
H    0     0                    776276.14513 767323.887  1.15%     -    4s
     0     2 767332.914    0    4 776276.145 767332.914  1.15%     -    6s
*   19     5              19    768339.12297 767711.122  0.08%  50.7    9s
    23     3 767857.706    3    2 768339.123 767726.122  0.08%  62.2   10s

Cutting planes:
  Flow cover: 5

Explored 51 nodes (9513 simplex iterations) in 11.85 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.683391229688e+05, best bound 7.682847531384e+05, gap 0.0071%