Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:35 2013

Optimize a model with 29316 rows, 3136 columns and 89376 nonzeros
Presolve removed 4197 rows and 1631 columns
Presolve time: 0.21s
Presolved: 25119 rows, 1505 columns, 76204 nonzeros
Variable types: 16 continuous, 1489 integer (1489 binary)
Found heuristic solution: objective 75750.000000

Root relaxation: objective 6.358189e+04, 3698 iterations, 0.25 seconds

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

     0     0 63581.8905    0    8 75750.0000 63581.8905  16.1%     -    0s
H    0     0                    63589.000000 63581.8905  0.01%     -    0s
     0     0 63584.4998    0   17 63589.0000 63584.4998  0.01%     -    0s

Cutting planes:
  Gomory: 1
  Implied bound: 1
  MIR: 7
  Zero half: 1

Explored 0 nodes (3774 simplex iterations) in 0.64 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.358900000000e+04, best bound 6.358500000000e+04, gap 0.0063%