Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:00:37 2013

Optimize a model with 45825 rows, 4225 columns and 139425 nonzeros
Presolve removed 5744 rows and 2181 columns
Presolve time: 0.37s
Presolved: 40081 rows, 2044 columns, 121728 nonzeros
Variable types: 24 continuous, 2020 integer (2020 binary)
Found heuristic solution: objective 103689.00000

Root relaxation: objective 8.449864e+04, 10652 iterations, 0.89 seconds

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

     0     0 84498.6364    0   11 103689.000 84498.6364  18.5%     -    1s
H    0     0                    84526.000000 84498.6364  0.03%     -    1s
H    0     0                    84508.000000 84498.6364  0.01%     -    1s
     0     0 84499.0000    0   11 84508.0000 84499.0000  0.01%     -    1s
     0     0 84499.0000    0   10 84508.0000 84499.0000  0.01%     -    1s
     0     0 84499.0000    0   13 84508.0000 84499.0000  0.01%     -    1s
     0     2 84499.0000    0   13 84508.0000 84499.0000  0.01%     -    1s

Cutting planes:
  Gomory: 1
  MIR: 13
  Zero half: 1

Explored 11 nodes (11561 simplex iterations) in 1.97 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.450800000000e+04, best bound 8.450000000000e+04, gap 0.0095%