Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:59:34 2013

Optimize a model with 41727 rows, 3969 columns and 127008 nonzeros
Presolve removed 7908 rows and 2103 columns
Presolve time: 0.30s
Presolved: 33819 rows, 1866 columns, 102592 nonzeros
Variable types: 19 continuous, 1847 integer (1847 binary)
Found heuristic solution: objective 92616.000000

Root relaxation: objective 7.877512e+04, 6428 iterations, 0.44 seconds

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

     0     0 78775.1250    0    8 92616.0000 78775.1250  14.9%     -    0s
H    0     0                    78795.000000 78775.1250  0.03%     -    0s
H    0     0                    78784.000000 78775.1250  0.01%     -    0s
     0     0 78776.3671    0   19 78784.0000 78776.3671  0.01%     -    0s

Cutting planes:
  Gomory: 5
  Implied bound: 2
  MIR: 7

Explored 0 nodes (6483 simplex iterations) in 0.97 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.878400000000e+04, best bound 7.877700000000e+04, gap 0.0089%