Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:44 2013

Optimize a model with 29316 rows, 3136 columns and 89376 nonzeros
Presolve removed 2364 rows and 1582 columns
Presolve time: 0.20s
Presolved: 26952 rows, 1554 columns, 82392 nonzeros
Variable types: 29 continuous, 1525 integer (1525 binary)
Found heuristic solution: objective 70630.000000

Root relaxation: objective 5.016892e+04, 10215 iterations, 0.62 seconds

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

     0     0 50168.9196    0    8 70630.0000 50168.9196  29.0%     -    0s
H    0     0                    50173.000000 50168.9196  0.01%     -    0s

Explored 0 nodes (10269 simplex iterations) in 0.98 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.017300000000e+04, best bound 5.016900000000e+04, gap 0.0080%