Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:56:01 2013

Optimize a model with 26289 rows, 2916 columns and 80190 nonzeros
Presolve removed 4013 rows and 1515 columns
Presolve time: 0.18s
Presolved: 22276 rows, 1401 columns, 67946 nonzeros
Variable types: 22 continuous, 1379 integer (1379 binary)
Found heuristic solution: objective 59421.000000

Root relaxation: objective 4.639783e+04, 6345 iterations, 0.33 seconds

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

     0     0 46397.8333    0   12 59421.0000 46397.8333  21.9%     -    0s
H    0     0                    46404.000000 46397.8333  0.01%     -    0s
     0     0 46399.4730    0   24 46404.0000 46399.4730  0.01%     -    0s

Cutting planes:
  Gomory: 3
  Implied bound: 2
  MIR: 8
  Zero half: 1

Explored 0 nodes (6461 simplex iterations) in 0.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.640400000000e+04, best bound 4.640000000000e+04, gap 0.0086%