Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:05:08 2013

Optimize a model with 62268 rows, 5184 columns and 189216 nonzeros
Presolve removed 3002 rows and 2589 columns
Presolve time: 0.46s
Presolved: 59266 rows, 2595 columns, 180902 nonzeros
Variable types: 45 continuous, 2550 integer (2550 binary)
Found heuristic solution: objective 117728.00000
Found heuristic solution: objective 111373.00000

Root relaxation: objective 7.848629e+04, 35791 iterations, 4.09 seconds

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

     0     0 78486.2857    0   10 111373.000 78486.2857  29.5%     -    4s
H    0     0                    78495.000000 78486.2857  0.01%     -    4s
H    0     0                    78492.000000 78486.2857  0.01%     -    4s

Explored 0 nodes (35817 simplex iterations) in 4.91 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.849200000000e+04, best bound 7.848700000000e+04, gap 0.0064%