Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:03:57 2013

Optimize a model with 57225 rows, 4900 columns and 173950 nonzeros
Presolve removed 6362 rows and 2517 columns
Presolve time: 0.47s
Presolved: 50863 rows, 2383 columns, 154458 nonzeros
Variable types: 28 continuous, 2355 integer (2355 binary)
Found heuristic solution: objective 96004.000000

Root relaxation: objective 7.357884e+04, 13649 iterations, 1.14 seconds

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

     0     0 73578.8444    0    9 96004.0000 73578.8444  23.4%     -    1s
H    0     0                    73587.000000 73578.8444  0.01%     -    1s
H    0     0                    73585.000000 73578.8444  0.01%     -    1s

Explored 0 nodes (13685 simplex iterations) in 1.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.358500000000e+04, best bound 7.357900000000e+04, gap 0.0082%