Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:57 2013

Optimize a model with 16261 rows, 2116 columns and 49726 nonzeros
Presolve removed 1780 rows and 1074 columns
Presolve time: 0.12s
Presolved: 14481 rows, 1042 columns, 44469 nonzeros
Variable types: 24 continuous, 1018 integer (1018 binary)
Found heuristic solution: objective 39106.000000

Root relaxation: objective 2.824575e+04, 4211 iterations, 0.19 seconds

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

     0     0 28245.7500    0    6 39106.0000 28245.7500  27.8%     -    0s
H    0     0                    28254.000000 28245.7500  0.03%     -    0s
H    0     0                    28248.000000 28245.7500  0.01%     -    0s

Explored 0 nodes (4221 simplex iterations) in 0.37 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.824800000000e+04, best bound 2.824600000000e+04, gap 0.0071%