Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:08 2013

Optimize a model with 26289 rows, 2916 columns and 80190 nonzeros
Presolve removed 2232 rows and 1477 columns
Presolve time: 0.18s
Presolved: 24057 rows, 1439 columns, 73343 nonzeros
Variable types: 23 continuous, 1416 integer (1416 binary)
Found heuristic solution: objective 69687.000000

Root relaxation: objective 5.510404e+04, 5928 iterations, 0.34 seconds

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

     0     0 55104.0385    0    7 69687.0000 55104.0385  20.9%     -    0s
H    0     0                    55115.000000 55104.0385  0.02%     -    0s
     0     0 55104.6798    0   14 55115.0000 55104.6798  0.02%     -    0s
     0     0 55104.6798    0   10 55115.0000 55104.6798  0.02%     -    0s
     0     0 55104.6798    0   15 55115.0000 55104.6798  0.02%     -    0s
     0     2 55105.0000    0   12 55115.0000 55105.0000  0.02%     -    1s
H   32    13                    55111.000000 55108.4369  0.00%  22.8    1s

Cutting planes:
  Gomory: 5
  MIR: 17
  Zero half: 1

Explored 32 nodes (8515 simplex iterations) in 1.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.511100000000e+04, best bound 5.510900000000e+04, gap 0.0036%