Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:16:13 2013

Optimize a model with 440 rows, 4340 columns and 9520 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 420 rows, 4320 columns, 9300 nonzeros
Variable types: 4240 continuous, 80 integer (80 binary)

Root relaxation: objective 4.636776e+04, 538 iterations, 0.01 seconds

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

     0     0 46367.7551    0    6          - 46367.7551     -      -    0s
     0     0 46391.8244    0    6          - 46391.8244     -      -    0s
     0     0 46394.2985    0    6          - 46394.2985     -      -    0s
     0     0 46394.2985    0    6          - 46394.2985     -      -    0s
H    0     0                    46832.519780 46394.2985  0.94%     -    0s
     0     2 46613.1432    0    6 46832.5198 46613.1432  0.47%     -    0s
*    6     2               5    46652.929898 46613.1432  0.09%  24.8    0s

Cutting planes:
  Flow cover: 3

Explored 9 nodes (910 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.665292989755e+04, best bound 4.665292989755e+04, gap 0.0%