Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:18:14 2013

Optimize a model with 1700 rows, 75650 columns and 651700 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 1.40s
Presolved: 1650 rows, 75600 columns, 601650 nonzeros
Variable types: 75100 continuous, 500 integer (500 binary)

Root relaxation: objective 1.824192e+05, 2919 iterations, 0.32 seconds

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

     0     0 182419.206    0    3          - 182419.206     -      -    2s
     0     0 182420.768    0    3          - 182420.768     -      -    3s
     0     0 182423.854    0    6          - 182423.854     -      -    3s
     0     0 182423.930    0    6          - 182423.930     -      -    3s
     0     0 182423.930    0    6          - 182423.930     -      -    4s
     0     2 182425.701    0    6          - 182425.701     -      -   12s
    25    27 183891.351   24    1          - 182491.962     -   34.0   15s
*   58    22              55    184471.55226 182491.962  1.07%  18.7   17s
H   88    15                    183080.99103 182846.630  0.13%  15.5   19s
*   92    12              31    182891.04835 182846.630  0.02%  14.9   19s

Cutting planes:
  Flow cover: 4

Explored 97 nodes (4666 simplex iterations) in 19.84 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.828910483535e+05, best bound 1.828739620406e+05, gap 0.0093%