Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:55:36 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 69160.000000

Root relaxation: objective 5.270577e+04, 7475 iterations, 0.40 seconds

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

     0     0 52705.7667    0    9 69160.0000 52705.7667  23.8%     -    0s
H    0     0                    52710.000000 52705.7667  0.01%     -    0s

Explored 0 nodes (7492 simplex iterations) in 0.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.271000000000e+04, best bound 5.270600000000e+04, gap 0.0076%