Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:03:01 2013

Optimize a model with 54809 rows, 4761 columns and 166635 nonzeros
Presolve removed 5940 rows and 2441 columns
Presolve time: 0.45s
Presolved: 48869 rows, 2320 columns, 148519 nonzeros
Variable types: 29 continuous, 2291 integer (2291 binary)
Found heuristic solution: objective 94014.000000

Root relaxation: objective 7.376005e+04, 8515 iterations, 0.76 seconds

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

     0     0 73760.0511    0   11 94014.0000 73760.0511  21.5%     -    1s
H    0     0                    73780.000000 73760.0511  0.03%     -    1s
H    0     0                    73767.000000 73760.0511  0.01%     -    1s

Explored 0 nodes (8536 simplex iterations) in 1.43 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.376700000000e+04, best bound 7.376100000000e+04, gap 0.0081%