Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:26:55 2012

Optimize a model with 442 rows, 441 columns and 1994 nonzeros
Presolve removed 147 rows and 89 columns
Presolve time: 0.01s
Presolved: 295 rows, 352 columns, 3205 nonzeros
Variable types: 20 continuous, 332 integer (332 binary)

Root relaxation: objective 1.560196e+02, 72 iterations, 0.00 seconds

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

     0     0  156.01962    0   30          -  156.01962     -      -    0s
     0     0  171.25000    0   25          -  171.25000     -      -    0s
     0     0  175.50000    0   30          -  175.50000     -      -    0s
     0     0  175.50000    0   30          -  175.50000     -      -    0s
     0     0  175.50000    0   20          -  175.50000     -      -    0s
H    0     0                     250.0000000  175.50000  29.8%     -    0s
H    0     0                     239.0000000  175.50000  26.6%     -    0s
     0     2  176.00000    0   20  239.00000  176.00000  26.4%     -    0s
*  684   358              23     227.0000000  197.92759  12.8%   8.3    0s
H  857   288                     226.0000000  215.05622  4.84%  10.8    1s
*  897   242              26     225.0000000  220.85883  1.84%  11.2    1s

Cutting planes:
  Gomory: 12
  Cover: 25
  Implied bound: 34
  Clique: 5
  MIR: 32
  GUB cover: 1
  Zero half: 13

Explored 918 nodes (10503 simplex iterations) in 1.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.250000000000e+02, best bound 2.250000000000e+02, gap 0.0%