Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:54:17 2013

Optimize a model with 1600 rows, 76750 columns and 650950 nonzeros
Presolve removed 50 rows and 1250 columns
Presolve time: 1.71s
Presolved: 1550 rows, 75500 columns, 600950 nonzeros
Variable types: 75050 continuous, 450 integer (450 binary)

Root relaxation: objective 2.252562e+05, 3264 iterations, 0.26 seconds

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

     0     0 225256.157    0    7          - 225256.157     -      -    2s
     0     0 225260.433    0    7          - 225260.433     -      -    3s
     0     0 225260.740    0    7          - 225260.740     -      -    3s
     0     0 225260.740    0    7          - 225260.740     -      -    4s
     0     2 225268.227    0    7          - 225268.227     -      -   12s
    14    16 226147.237   12    7          - 225394.647     -   70.4   15s
   111   113 226812.509  107    7          - 225394.647     -   15.9   20s
*  223   178             208    227447.13347 225394.647  0.90%  10.1   24s
   241   189 226107.854   20    7 227447.133 225486.706  0.86%  12.2   25s
H  307   188                    226879.48868 225486.706  0.61%  10.6   25s
H  334    12                    225943.68351 225491.442  0.20%  12.3   26s
*  340    11              30    225941.32620 225491.442  0.20%  12.1   26s
*  352     5              11    225915.15199 225516.706  0.18%  13.7   27s

Cutting planes:
  Flow cover: 1

Explored 364 nodes (10151 simplex iterations) in 27.92 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%