Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:27 2013

Optimize a model with 27775 rows, 3025 columns and 84700 nonzeros
Presolve removed 2751 rows and 1538 columns
Presolve time: 0.17s
Presolved: 25024 rows, 1487 columns, 76423 nonzeros
Variable types: 26 continuous, 1461 integer (1461 binary)
Found heuristic solution: objective 54420.000000

Root relaxation: objective 4.018798e+04, 7513 iterations, 0.47 seconds

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

     0     0 40187.9762    0    7 54420.0000 40187.9762  26.2%     -    0s
H    0     0                    40200.000000 40187.9762  0.03%     -    0s
H    0     0                    40197.000000 40187.9762  0.02%     -    0s
H    0     0                    40193.000000 40187.9762  0.01%     -    0s
     0     0 40190.0974    0   23 40193.0000 40190.0974  0.01%     -    0s

Cutting planes:
  Gomory: 5
  Implied bound: 2
  MIR: 7
  Mod-K: 2

Explored 0 nodes (7574 simplex iterations) in 0.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019300000000e+04, best bound 4.019100000000e+04, gap 0.0050%