Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:24 2013

Optimize a model with 14858 rows, 14478 columns and 57798 nonzeros
Presolve removed 1849 rows and 0 columns
Presolve time: 0.08s
Presolved: 13009 rows, 14478 columns, 54100 nonzeros
Variable types: 14440 continuous, 38 integer (38 binary)

Root relaxation: objective 3.888145e+04, 2041 iterations, 0.13 seconds

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

     0     0 38881.4523    0    3          - 38881.4523     -      -    0s
H    0     0                    39442.000000 38881.4523  1.42%     -    0s
H    0     0                    39227.000000 38881.4523  0.88%     -    0s
H    0     0                    38938.000000 38881.4523  0.15%     -    0s
     0     0 38881.5732    0    4 38938.0000 38881.5732  0.14%     -    0s
     0     0 38881.5732    0    3 38938.0000 38881.5732  0.14%     -    0s
     0     0 38884.0807    0    3 38938.0000 38884.0807  0.14%     -    0s
     0     0 38884.1421    0    3 38938.0000 38884.1421  0.14%     -    0s
     0     0 38884.1421    0    3 38938.0000 38884.1421  0.14%     -    0s
     0     0 38895.7805    0    4 38938.0000 38895.7805  0.11%     -    0s
     0     0 38895.7829    0    2 38938.0000 38895.7829  0.11%     -    0s
     0     2 38895.8438    0    2 38938.0000 38895.8438  0.11%     -    0s
*    3     1               2    38908.000000 38895.8438  0.03%  11.7    0s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 5 nodes (2966 simplex iterations) in 0.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.890800000000e+04, best bound 3.890800000000e+04, gap 0.0%