Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:26:41 2012

Optimize a model with 902 rows, 840 columns and 3580 nonzeros
Presolve removed 194 rows and 40 columns
Presolve time: 0.03s
Presolved: 708 rows, 800 columns, 3285 nonzeros
Variable types: 380 continuous, 420 integer (420 binary)

Root relaxation: objective 1.522755e+02, 661 iterations, 0.01 seconds

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

     0     0  152.27548    0   44          -  152.27548     -      -    0s
     0     0  170.52305    0   48          -  170.52305     -      -    0s
     0     0  171.34283    0   49          -  171.34283     -      -    0s
     0     0  171.34337    0   50          -  171.34337     -      -    0s
     0     0  171.34337    0   50          -  171.34337     -      -    0s
     0     2  171.34844    0   50          -  171.34844     -      -    0s
*  932   539              52     285.0000000  208.56440  26.8%  54.3    3s
H 1068   503                     257.0000000  210.63864  18.0%  52.1    4s
H 1176   484                     256.0000000  212.99177  16.8%  51.3    4s
  1284   471  230.26130   29   35  256.00000  214.84411  16.1%  51.9    5s
H 1423   445                     255.0000000  214.84411  15.7%  54.5    6s
  3169   425  241.05091   44   33  255.00000  234.63536  7.99%  45.7   10s

Cutting planes:
  Gomory: 13
  Cover: 1
  Implied bound: 7
  Flow cover: 13
  GUB cover: 1

Explored 10350 nodes (277728 simplex iterations) in 14.60 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.550000000000e+02, best bound 2.550000000000e+02, gap 0.0%