Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:01:18 2013

Optimize a model with 1700 rows, 128000 columns and 1351050 nonzeros
Presolve removed 50 rows and 2450 columns
Presolve time: 3.50s
Presolved: 1650 rows, 125550 columns, 1251050 nonzeros
Variable types: 125050 continuous, 500 integer (500 binary)

Root relaxation: objective 2.246016e+05, 2521 iterations, 0.33 seconds

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

     0     0 224601.597    0    8          - 224601.597     -      -    4s
     0     0 224601.597    0    8          - 224601.597     -      -    5s
     0     0 224601.597    0    8          - 224601.597     -      -    6s
     0     0 224601.597    0    8          - 224601.597     -      -    6s
     0     0 224601.597    0    8          - 224601.597     -      -    7s
     0     0 224601.597    0    8          - 224601.597     -      -    8s
     0     0 224601.597    0    8          - 224601.597     -      -    8s
     0     2 224601.597    0    8          - 224601.597     -      -   21s
    36    38 225150.099   31    6          - 224626.644     -   22.8   25s
   131   133 225434.582  112    8          - 224626.644     -    9.3   30s
*  213   211             194    226562.18804 224626.644  0.85%   6.5   33s
   281   268 225168.385   65    8 226562.188 224647.909  0.84%   6.5   35s
H  300   145                    225388.75178 224647.909  0.33%   6.1   35s
*  310     8               5    224847.24808 224666.271  0.08%   6.4   35s

Cutting planes:
  Flow cover: 3

Explored 343 nodes (8267 simplex iterations) in 37.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.248472480793e+05, best bound 2.248433936216e+05, gap 0.0017%