Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:59:02 2013

Optimize a model with 39773 rows, 3844 columns and 121086 nonzeros
Presolve removed 8075 rows and 2049 columns
Presolve time: 0.29s
Presolved: 31698 rows, 1795 columns, 96155 nonzeros
Variable types: 18 continuous, 1777 integer (1777 binary)
Found heuristic solution: objective 85673.000000

Root relaxation: objective 7.776613e+04, 8209 iterations, 0.55 seconds

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

     0     0 77766.1316    0    8 85673.0000 77766.1316  9.23%     -    0s
H    0     0                    77770.000000 77766.1316  0.00%     -    0s

Explored 0 nodes (8219 simplex iterations) in 0.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.777000000000e+04, best bound 7.776700000000e+04, gap 0.0039%