Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:17:59 2013

Optimize a model with 29754 rows, 29214 columns and 116694 nonzeros
Presolve removed 1136 rows and 0 columns
Presolve time: 0.17s
Presolved: 28618 rows, 29214 columns, 114422 nonzeros
Variable types: 29160 continuous, 54 integer (54 binary)

Root relaxation: objective 4.901698e+04, 3845 iterations, 0.47 seconds

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

     0     0 49016.9781    0    7          - 49016.9781     -      -    0s
H    0     0                    49897.000000 49016.9781  1.76%     -    0s
H    0     0                    49581.000000 49016.9781  1.14%     -    0s
     0     0 49019.2445    0    8 49581.0000 49019.2445  1.13%     -    1s
     0     0 49019.5579    0    8 49581.0000 49019.5579  1.13%     -    1s
     0     0 49019.5579    0    8 49581.0000 49019.5579  1.13%     -    1s
     0     2 49024.5257    0    8 49581.0000 49024.5257  1.12%     -    1s
H    6     3                    49157.106383 49126.5249  0.06%  60.0    2s
*    7     2               7    49151.000000 49126.5249  0.05%  58.1    2s

Cutting planes:
  Gomory: 1
  Flow cover: 5

Explored 10 nodes (4303 simplex iterations) in 2.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.915100000000e+04, best bound 4.915100000000e+04, gap 0.0%