Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:43 2013

Optimize a model with 12635 rows, 12285 columns and 49035 nonzeros
Presolve removed 1218 rows and 0 columns
Presolve time: 0.06s
Presolved: 11417 rows, 12285 columns, 46599 nonzeros
Variable types: 12250 continuous, 35 integer (35 binary)

Root relaxation: objective 3.731544e+04, 2481 iterations, 0.17 seconds

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

     0     0 37315.4356    0    4          - 37315.4356     -      -    0s
H    0     0                    38005.000000 37315.4356  1.81%     -    0s
H    0     0                    37449.000000 37315.4356  0.36%     -    0s
     0     0 37321.7797    0    5 37449.0000 37321.7797  0.34%     -    0s
     0     0 37321.7970    0    5 37449.0000 37321.7970  0.34%     -    0s
     0     0 37334.3301    0    5 37449.0000 37334.3301  0.31%     -    0s
     0     0 37335.1866    0    5 37449.0000 37335.1866  0.30%     -    0s
     0     2 37338.8452    0    5 37449.0000 37338.8452  0.29%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 6 nodes (2841 simplex iterations) in 0.89 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.744900000000e+04, best bound 3.744900000000e+04, gap 0.0%