Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:55 2013

Optimize a model with 520 rows, 5180 columns and 16440 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.03s
Presolved: 500 rows, 5160 columns, 15420 nonzeros
Variable types: 5040 continuous, 120 integer (120 binary)

Root relaxation: objective 3.839329e+04, 458 iterations, 0.02 seconds

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

     0     0 38393.2919    0    6          - 38393.2919     -      -    0s
     0     0 38399.3540    0    6          - 38399.3540     -      -    0s
     0     0 38403.8695    0    9          - 38403.8695     -      -    0s
     0     0 38416.0337    0   12          - 38416.0337     -      -    0s
     0     0 38419.8484    0   12          - 38419.8484     -      -    0s
     0     0 38420.4729    0   12          - 38420.4729     -      -    0s
     0     0 38420.4729    0   12          - 38420.4729     -      -    0s
H    0     0                    41882.699099 38420.4729  8.27%     -    0s
     0     2 38428.5187    0   12 41882.6991 38428.5187  8.25%     -    0s
H   27    10                    38642.363036 38517.9174  0.32%  10.3    0s
*   35    10              32    38638.274112 38517.9174  0.31%   8.7    0s

Cutting planes:
  Flow cover: 7

Explored 43 nodes (1013 simplex iterations) in 0.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.863827411221e+04, best bound 3.863464296250e+04, gap 0.0094%