Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:55 2013

Optimize a model with 680 rows, 4440 columns and 9620 nonzeros
Presolve removed 80 rows and 60 columns
Presolve time: 0.03s
Presolved: 600 rows, 4380 columns, 9300 nonzeros
Variable types: 4200 continuous, 180 integer (180 binary)

Root relaxation: objective 3.894400e+04, 569 iterations, 0.02 seconds

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

     0     0 38944.0027    0    2          - 38944.0027     -      -    0s
     0     0 38969.1879    0    2          - 38969.1879     -      -    0s
     0     0 39024.1756    0    2          - 39024.1756     -      -    0s
     0     0 39029.0120    0    2          - 39029.0120     -      -    0s
H    0     0                    43727.484010 39029.0120  10.7%     -    0s
     0     2 39034.1351    0    2 43727.4840 39034.1351  10.7%     -    0s
H    4     3                    39257.795223 39160.9432  0.25%  20.5    0s
H    5     3                    39252.143677 39160.9432  0.23%  26.4    0s
H    6     3                    39251.995816 39160.9432  0.23%  22.2    0s
*    7     3               7    39246.376355 39160.9432  0.22%  20.0    0s

Cutting planes:
  Gomory: 3

Explored 15 nodes (871 simplex iterations) in 0.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.924637635461e+04, best bound 3.924637635461e+04, gap 0.0%