Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:47 2013

Optimize a model with 900 rows, 25300 columns and 50850 nonzeros
Presolve removed 200 rows and 150 columns
Presolve time: 0.23s
Presolved: 700 rows, 25150 columns, 50450 nonzeros
Variable types: 25100 continuous, 50 integer (50 binary)

Root relaxation: objective 1.715514e+05, 1580 iterations, 0.10 seconds

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

     0     0 171551.420    0    2          - 171551.420     -      -    0s
H    0     0                    175540.05747 171551.420  2.27%     -    0s
H    0     0                    171591.76124 171551.420  0.02%     -    0s
     0     0 171564.828    0    1 171591.761 171564.828  0.02%     -    0s
     0     0 171569.326    0    1 171591.761 171569.326  0.01%     -    0s
     0     0 171569.505    0    1 171591.761 171569.505  0.01%     -    0s
     0     0 171575.343    0    1 171591.761 171575.343  0.01%     -    0s

Explored 0 nodes (1597 simplex iterations) in 0.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.715917612416e+05, best bound 1.715753432549e+05, gap 0.0096%