Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:55:31 2013

Optimize a model with 24857 rows, 2809 columns and 75843 nonzeros
Presolve removed 1959 rows and 1416 columns
Presolve time: 0.17s
Presolved: 22898 rows, 1393 columns, 69994 nonzeros
Variable types: 26 continuous, 1367 integer (1367 binary)
Found heuristic solution: objective 70232.000000

Root relaxation: objective 5.372096e+04, 13072 iterations, 0.84 seconds

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

     0     0 53720.9583    0   12 70232.0000 53720.9583  23.5%     -    1s
H    0     0                    53739.000000 53720.9583  0.03%     -    1s
H    0     0                    53737.000000 53720.9583  0.03%     -    1s
H    0     0                    53732.000000 53720.9583  0.02%     -    1s
     0     0 53721.5378    0   31 53732.0000 53721.5378  0.02%     -    1s
     0     0 53721.5378    0   11 53732.0000 53721.5378  0.02%     -    1s
H    0     0                    53729.000000 53721.5378  0.01%     -    1s
     0     0 53721.9228    0   32 53729.0000 53721.9228  0.01%     -    1s
H    0     0                    53728.000000 53721.9228  0.01%     -    1s
     0     1 53721.9381    0   32 53728.0000 53721.9381  0.01%     -    1s
H    1     0                    53726.000000 53721.9381  0.01%   0.0    1s

Explored 2 nodes (13500 simplex iterations) in 1.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.372600000000e+04, best bound 5.372200000000e+04, gap 0.0074%