Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:04:11 2013

Optimize a model with 59711 rows, 5041 columns and 181476 nonzeros
Presolve removed 6900 rows and 2597 columns
Presolve time: 0.49s
Presolved: 52811 rows, 2444 columns, 160125 nonzeros
Variable types: 25 continuous, 2419 integer (2419 binary)
Found heuristic solution: objective 102063.00000

Root relaxation: objective 8.150751e+04, 13969 iterations, 1.41 seconds

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

     0     0 81507.5065    0    6 102063.000 81507.5065  20.1%     -    2s
H    0     0                    81514.000000 81507.5065  0.01%     -    2s

Explored 0 nodes (13987 simplex iterations) in 2.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.151400000000e+04, best bound 8.150800000000e+04, gap 0.0074%