Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:49 2013

Optimize a model with 400 rows, 4420 columns and 9340 nonzeros
Presolve removed 20 rows and 140 columns
Presolve time: 0.01s
Presolved: 380 rows, 4280 columns, 9140 nonzeros
Variable types: 4220 continuous, 60 integer (60 binary)

Root relaxation: objective 3.860476e+04, 421 iterations, 0.01 seconds

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

     0     0 38604.7615    0    3          - 38604.7615     -      -    0s
     0     0 38670.9691    0    3          - 38670.9691     -      -    0s
     0     0 38689.1181    0    3          - 38689.1181     -      -    0s
     0     0 38691.0774    0    3          - 38691.0774     -      -    0s
     0     0 38693.4456    0    3          - 38693.4456     -      -    0s
     0     0 38697.6684    0    3          - 38697.6684     -      -    0s
     0     0 38698.7613    0    3          - 38698.7613     -      -    0s
     0     0 38706.2829    0    3          - 38706.2829     -      -    0s
     0     0 38710.0601    0    3          - 38710.0601     -      -    0s
     0     0 38710.9003    0    3          - 38710.9003     -      -    0s
     0     0 38710.9795    0    3          - 38710.9795     -      -    0s
     0     0 38711.1999    0    3          - 38711.1999     -      -    0s
     0     0 38711.1999    0    3          - 38711.1999     -      -    0s
H    0     0                    39080.807514 38711.1999  0.95%     -    0s
     0     2 38715.4195    0    3 39080.8075 38715.4195  0.93%     -    0s
*    7     3               5    38858.752096 38855.6599  0.01%  24.6    0s

Cutting planes:
  Flow cover: 14

Explored 8 nodes (849 simplex iterations) in 0.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.885875209612e+04, best bound 3.885565987722e+04, gap 0.0080%