Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:05:51 2013

Optimize a model with 64897 rows, 5329 columns and 197173 nonzeros
Presolve removed 4191 rows and 2683 columns
Presolve time: 0.55s
Presolved: 60706 rows, 2646 columns, 184914 nonzeros
Variable types: 40 continuous, 2606 integer (2606 binary)
Found heuristic solution: objective 111908.00000

Root relaxation: objective 8.108618e+04, 23037 iterations, 2.35 seconds

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

     0     0 81086.1818    0   11 111908.000 81086.1818  27.5%     -    3s
H    0     0                    81097.000000 81086.1818  0.01%     -    3s
     0     0 81087.5000    0   15 81097.0000 81087.5000  0.01%     -    3s
     0     0 81087.5000    0   13 81097.0000 81087.5000  0.01%     -    3s
H    0     0                    81095.000000 81087.5000  0.01%     -    3s

Explored 0 nodes (25827 simplex iterations) in 3.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.109500000000e+04, best bound 8.108800000000e+04, gap 0.0086%