Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:03:32 2013

Optimize a model with 57225 rows, 4900 columns and 173950 nonzeros
Presolve removed 5746 rows and 2508 columns
Presolve time: 0.47s
Presolved: 51479 rows, 2392 columns, 156313 nonzeros
Variable types: 28 continuous, 2364 integer (2364 binary)
Found heuristic solution: objective 105356.00000

Root relaxation: objective 7.875613e+04, 13068 iterations, 1.08 seconds

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

     0     0 78756.1284    0    9 105356.000 78756.1284  25.2%     -    1s
H    0     0                    78767.000000 78756.1284  0.01%     -    1s
H    0     0                    78765.000000 78756.1284  0.01%     -    1s
     0     0 78757.2466    0   22 78765.0000 78757.2466  0.01%     -    1s

Cutting planes:
  Gomory: 5
  Implied bound: 1
  MIR: 8

Explored 0 nodes (13147 simplex iterations) in 1.95 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.876500000000e+04, best bound 7.875800000000e+04, gap 0.0089%