Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:32:30 2013

Optimize a model with 2400 rows, 102800 columns and 215900 nonzeros
Presolve removed 100 rows and 100 columns
Presolve time: 0.40s
Presolved: 2300 rows, 102700 columns, 213800 nonzeros
Variable types: 102200 continuous, 500 integer (500 binary)

Root relaxation: objective 7.672886e+05, 6746 iterations, 0.73 seconds

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

     0     0 767288.564    0    9          - 767288.564     -      -    1s
     0     0 767328.491    0    6          - 767328.491     -      -    2s
     0     0 767328.491    0    6          - 767328.491     -      -    2s
     0     0 767328.491    0    6          - 767328.491     -      -    3s
     0     0 767328.491    0    6          - 767328.491     -      -    3s
     0     0 767328.491    0    6          - 767328.491     -      -    4s
     0     0 767328.491    0    6          - 767328.491     -      -    4s
     0     0 767328.491    0    6          - 767328.491     -      -    5s
H    0     0                    777448.83957 767328.491  1.30%     -    5s
     0     2 767336.603    0    6 777448.840 767336.603  1.30%     -    6s
    15    14 768251.825   15    3 777448.840 767724.122  1.25%  64.1   10s
*   23     5              23    768346.06878 767724.122  0.08%  45.9   11s

Cutting planes:
  Flow cover: 5

Explored 46 nodes (11023 simplex iterations) in 13.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.683460687757e+05, best bound 7.683240123860e+05, gap 0.0029%