Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:58:45 2013

Optimize a model with 37881 rows, 3721 columns and 115351 nonzeros
Presolve removed 3423 rows and 1893 columns
Presolve time: 0.26s
Presolved: 34458 rows, 1828 columns, 104821 nonzeros
Variable types: 25 continuous, 1803 integer (1803 binary)
Found heuristic solution: objective 80856.000000

Root relaxation: objective 5.956687e+04, 8906 iterations, 0.61 seconds

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

     0     0 59566.8739    0    9 80856.0000 59566.8739  26.3%     -    0s
H    0     0                    59572.000000 59566.8739  0.01%     -    1s

Explored 0 nodes (8922 simplex iterations) in 1.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.957200000000e+04, best bound 5.956700000000e+04, gap 0.0084%