Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:55:13 2013

Optimize a model with 23478 rows, 2704 columns and 71656 nonzeros
Presolve removed 2760 rows and 1383 columns
Presolve time: 0.18s
Presolved: 20718 rows, 1321 columns, 63325 nonzeros
Variable types: 24 continuous, 1297 integer (1297 binary)
Found heuristic solution: objective 55069.000000

Root relaxation: objective 4.029483e+04, 6253 iterations, 0.34 seconds

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

     0     0 40294.8337    0   10 55069.0000 40294.8337  26.8%     -    0s
H    0     0                    40311.000000 40294.8337  0.04%     -    0s
H    0     0                    40307.000000 40294.8337  0.03%     -    0s
     0     0 40295.8696    0   16 40307.0000 40295.8696  0.03%     -    0s
     0     0 40295.8696    0   10 40307.0000 40295.8696  0.03%     -    0s
H    0     0                    40306.000000 40295.8696  0.03%     -    0s
H    0     0                    40304.000000 40295.8696  0.02%     -    0s
     0     0 40296.1241    0   25 40304.0000 40296.1241  0.02%     -    0s
H    0     0                    40301.000000 40296.1241  0.01%     -    0s
     0     1 40296.1994    0   25 40301.0000 40296.1994  0.01%     -    0s

Cutting planes:
  Gomory: 7
  Cover: 3
  MIR: 10
  GUB cover: 1
  Zero half: 7

Explored 5 nodes (8477 simplex iterations) in 0.97 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.030100000000e+04, best bound 4.029800000000e+04, gap 0.0074%