Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:15:29 2013

Optimize a model with 1700 rows, 75650 columns and 651700 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 1.41s
Presolved: 1650 rows, 75600 columns, 601650 nonzeros
Variable types: 75100 continuous, 500 integer (500 binary)

Root relaxation: objective 2.252562e+05, 3320 iterations, 0.32 seconds

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

     0     0 225256.157    0    3          - 225256.157     -      -    2s
     0     0 225258.397    0    3          - 225258.397     -      -    3s
     0     0 225258.449    0    3          - 225258.449     -      -    3s
     0     0 225258.449    0    3          - 225258.449     -      -    4s
     0     2 225259.189    0    3          - 225259.189     -      -   11s
    32    34 225953.704   32    3          - 225510.706     -   28.3   15s
    79    81 225998.880   79    1          - 225510.706     -   13.3   20s
*  117    18             117    226068.65674 225510.706  0.25%   9.9   23s
*  130     1              11    225915.15199 225667.582  0.11%  14.7   23s

Cutting planes:
  Flow cover: 1

Explored 132 nodes (5678 simplex iterations) in 23.92 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.259151519913e+05, best bound 2.259151519913e+05, gap 0.0%