Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:13:07 2013

Optimize a model with 5800 rows, 35150 columns and 85250 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.43s
Presolved: 5750 rows, 35100 columns, 80200 nonzeros
Variable types: 30100 continuous, 5000 integer (5000 binary)

Root relaxation: objective 1.749223e+05, 3570 iterations, 0.17 seconds

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

     0     0 174922.321    0    4          - 174922.321     -      -    0s
     0     0 174958.978    0    4          - 174958.978     -      -    1s
     0     0 174959.439    0    2          - 174959.439     -      -    1s
     0     0 174959.439    0    2          - 174959.439     -      -    1s
     0     0 174959.607    0    2          - 174959.607     -      -    1s
     0     0 174959.607    0    2          - 174959.607     -      -    1s
     0     2 174959.607    0    2          - 174959.607     -      -    2s
*   23    11              12    176767.92131 175455.364  0.74%  79.5    4s
    69    11 175875.915   55    2 176767.921 175455.364  0.74%  32.5    5s
   280    17 176406.980  263    2 176767.921 175455.364  0.74%  14.6   10s
   526    18 175862.002    4    2 176767.921 175636.745  0.64%   9.4   15s
H  568    16                    176540.28205 175636.745  0.51%  10.0   15s
H  650     3                    176230.60939 176145.284  0.05%  10.1   16s
*  767     3              44    176210.41881 176203.629  0.00%   8.8   18s

Cutting planes:
  Gomory: 1
  Implied bound: 40
  Flow cover: 1

Explored 768 nodes (11399 simplex iterations) in 18.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.762104188093e+05, best bound 1.762036292354e+05, gap 0.0039%