Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:55:25 2013

Optimize a model with 23478 rows, 2704 columns and 71656 nonzeros
Presolve removed 1699 rows and 1358 columns
Presolve time: 0.16s
Presolved: 21779 rows, 1346 columns, 66660 nonzeros
Variable types: 27 continuous, 1319 integer (1319 binary)
Found heuristic solution: objective 50651.000000

Root relaxation: objective 3.518727e+04, 5629 iterations, 0.29 seconds

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

     0     0 35187.2674    0   14 50651.0000 35187.2674  30.5%     -    0s
H    0     0                    35206.000000 35187.2674  0.05%     -    0s
H    0     0                    35197.000000 35187.2674  0.03%     -    0s
     0     0 35188.4453    0   29 35197.0000 35188.4453  0.02%     -    0s
     0     0 35188.4453    0   11 35197.0000 35188.4453  0.02%     -    0s
     0     0 35188.7134    0   32 35197.0000 35188.7134  0.02%     -    0s
H    0     0                    35196.000000 35188.7134  0.02%     -    0s
     0     1 35188.7150    0   32 35196.0000 35188.7150  0.02%     -    0s
H    1     1                    35191.000000 35188.7150  0.01%   0.0    0s

Explored 2 nodes (5903 simplex iterations) in 0.77 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.519100000000e+04, best bound 3.518900000000e+04, gap 0.0057%