Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:57:38 2013

Optimize a model with 32567 rows, 3364 columns and 99238 nonzeros
Presolve removed 4091 rows and 1733 columns
Presolve time: 0.24s
Presolved: 28476 rows, 1631 columns, 86690 nonzeros
Variable types: 23 continuous, 1608 integer (1608 binary)
Found heuristic solution: objective 64734.000000

Root relaxation: objective 5.232088e+04, 8459 iterations, 0.55 seconds

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

     0     0 52320.8846    0    7 64734.0000 52320.8846  19.2%     -    0s
H    0     0                    52333.000000 52320.8846  0.02%     -    0s
H    0     0                    52326.000000 52320.8846  0.01%     -    0s

Explored 0 nodes (8467 simplex iterations) in 0.90 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.232600000000e+04, best bound 5.232100000000e+04, gap 0.0096%