Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:59:47 2013

Optimize a model with 41727 rows, 3969 columns and 127008 nonzeros
Presolve removed 6331 rows and 2069 columns
Presolve time: 0.33s
Presolved: 35396 rows, 1900 columns, 107562 nonzeros
Variable types: 23 continuous, 1877 integer (1877 binary)
Found heuristic solution: objective 70948.000000

Root relaxation: objective 5.566257e+04, 9738 iterations, 0.80 seconds

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

     0     0 55662.5714    0    3 70948.0000 55662.5714  21.5%     -    1s
H    0     0                    55666.000000 55662.5714  0.01%     -    1s

Explored 0 nodes (9761 simplex iterations) in 1.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.566600000000e+04, best bound 5.566300000000e+04, gap 0.0054%