Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:48 2013

Optimize a model with 385 rows, 12285 columns and 24535 nonzeros
Presolve time: 0.02s
Presolved: 385 rows, 12285 columns, 24535 nonzeros
Variable types: 12250 continuous, 35 integer (35 binary)

Root relaxation: objective 3.123608e+04, 471 iterations, 0.01 seconds

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

     0     0 31236.0839    0    6          - 31236.0839     -      -    0s
H    0     0                    32092.000000 31236.0839  2.67%     -    0s
H    0     0                    32016.000000 31236.0839  2.44%     -    0s
     0     0 31482.5631    0    3 32016.0000 31482.5631  1.67%     -    0s
H    0     0                    32009.000000 31482.5631  1.64%     -    0s
H    0     0                    31523.000000 31482.5631  0.13%     -    0s
     0     0 31497.5385    0    1 31523.0000 31497.5385  0.08%     -    0s
     0     0 31505.5889    0    1 31523.0000 31505.5889  0.06%     -    0s
     0     0 31505.5889    0    1 31523.0000 31505.5889  0.06%     -    0s
     0     0 31508.0667    0    1 31523.0000 31508.0667  0.05%     -    0s
     0     0 31508.7143    0    1 31523.0000 31508.7143  0.05%     -    0s
     0     0 31508.7143    0    1 31523.0000 31508.7143  0.05%     -    0s

Cutting planes:
  Implied bound: 28
  Flow cover: 3

Explored 0 nodes (616 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.152300000000e+04, best bound 3.152300000000e+04, gap 0.0%