Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:54:53 2013

Optimize a model with 22151 rows, 2601 columns and 67626 nonzeros
Presolve removed 2062 rows and 1316 columns
Presolve time: 0.15s
Presolved: 20089 rows, 1285 columns, 61515 nonzeros
Variable types: 26 continuous, 1259 integer (1259 binary)
Found heuristic solution: objective 69180.000000

Root relaxation: objective 5.405653e+04, 8692 iterations, 0.49 seconds

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

     0     0 54056.5263    0    5 69180.0000 54056.5263  21.9%     -    0s
H    0     0                    54069.000000 54056.5263  0.02%     -    0s
H    0     0                    54065.000000 54056.5263  0.02%     -    0s
H    0     0                    54060.000000 54056.5263  0.01%     -    0s

Explored 0 nodes (8702 simplex iterations) in 0.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.406000000000e+04, best bound 5.405700000000e+04, gap 0.0055%