Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:54:54 2013

Optimize a model with 22151 rows, 2601 columns and 67626 nonzeros
Presolve removed 2717 rows and 1335 columns
Presolve time: 0.16s
Presolved: 19434 rows, 1266 columns, 59309 nonzeros
Variable types: 21 continuous, 1245 integer (1245 binary)
Found heuristic solution: objective 51479.000000

Root relaxation: objective 3.855282e+04, 7415 iterations, 0.43 seconds

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

     0     0 38552.8182    0   12 51479.0000 38552.8182  25.1%     -    0s
H    0     0                    38570.000000 38552.8182  0.04%     -    0s
H    0     0                    38562.000000 38552.8182  0.02%     -    0s
     0     0 38552.8182    0   16 38562.0000 38552.8182  0.02%     -    0s
     0     0 38552.8182    0   11 38562.0000 38552.8182  0.02%     -    0s
     0     0 38552.8182    0   27 38562.0000 38552.8182  0.02%     -    1s
     0     2 38552.8182    0   27 38562.0000 38552.8182  0.02%     -    1s
H  149    73                    38559.000000 38553.0000  0.02%  48.3    1s
H  777   331                    38557.000000 38553.0000  0.01%  30.4    2s
  1802   489 38555.9810   40   38 38557.0000 38553.0667  0.01%  34.1    5s

Cutting planes:
  Gomory: 8
  Cover: 16
  Implied bound: 2
  MIR: 93
  GUB cover: 1
  Zero half: 27

Explored 2038 nodes (79384 simplex iterations) in 5.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.855700000000e+04, best bound 3.855400000000e+04, gap 0.0078%