Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:09:42 2013

Optimize a model with 76153 rows, 5929 columns and 231231 nonzeros
Presolve removed 4205 rows and 2978 columns
Presolve time: 0.68s
Presolved: 71948 rows, 2951 columns, 218949 nonzeros
Variable types: 42 continuous, 2909 integer (2909 binary)
Found heuristic solution: objective 115512.00000

Root relaxation: objective 7.916518e+04, 32119 iterations, 3.84 seconds

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

     0     0 79165.1818    0    8 115512.000 79165.1818  31.5%     -    4s
H    0     0                    79175.000000 79165.1818  0.01%     -    4s
H    0     0                    79173.000000 79165.1818  0.01%     -    5s

Explored 0 nodes (32303 simplex iterations) in 5.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.917300000000e+04, best bound 7.916600000000e+04, gap 0.0088%