Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:18:18 2013

Optimize a model with 800 rows, 25350 columns and 50950 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.11s
Presolved: 750 rows, 25300 columns, 50750 nonzeros
Variable types: 25250 continuous, 50 integer (50 binary)

Root relaxation: objective 1.749223e+05, 1697 iterations, 0.07 seconds

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

     0     0 174922.321    0    2          - 174922.321     -      -    0s
H    0     0                    181970.74324 174922.321  3.87%     -    0s
     0     0 174945.409    0    2 181970.743 174945.409  3.86%     -    0s
     0     0 174956.018    0    2 181970.743 174956.018  3.85%     -    0s
     0     0 174958.761    0    2 181970.743 174958.761  3.85%     -    0s
     0     0 174958.761    0    2 181970.743 174958.761  3.85%     -    0s
     0     2 174961.242    0    2 181970.743 174961.242  3.85%     -    0s
*    3     3               3    175375.29777 175375.298   0.0%  81.3    0s

Cutting planes:
  Flow cover: 5

Explored 4 nodes (2247 simplex iterations) in 0.82 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.753752977696e+05, best bound 1.753752977696e+05, gap 0.0%