Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:04:37 2012

Optimize a model with 237 rows, 168 columns and 758 nonzeros
Presolve time: 0.00s
Presolved: 237 rows, 168 columns, 758 nonzeros
Variable types: 0 continuous, 168 integer (168 binary)
Found heuristic solution: objective 60.0000000
Found heuristic solution: objective 55.0000000

Root relaxation: objective 0.000000e+00, 90 iterations, 0.00 seconds

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

     0     0    0.00000    0   50   55.00000    0.00000   100%     -    0s
H    0     0                      45.0000000    0.00000   100%     -    0s
H    0     0                      44.0000000    0.00000   100%     -    0s
     0     0    0.52083    0   51   44.00000    0.52083  98.8%     -    0s
H    0     0                      42.0000000    0.52083  98.8%     -    0s
     0     0    1.23338    0   54   42.00000    1.23338  97.1%     -    0s
H    0     0                      40.0000000    1.23338  96.9%     -    0s
H    0     0                      39.0000000    1.23338  96.8%     -    0s
     0     0    1.26084    0   55   39.00000    1.26084  96.8%     -    0s
     0     0    1.26248    0   55   39.00000    1.26248  96.8%     -    0s
H    0     0                      38.0000000    1.26248  96.7%     -    0s
H    0     0                      37.0000000    1.26248  96.6%     -    0s
     0     2    1.26248    0   55   37.00000    1.26248  96.6%     -    0s
*   28    22              17      25.0000000    3.24804  87.0%  28.2    0s

Cutting planes:
  Gomory: 3
  Zero half: 3

Explored 673 nodes (15378 simplex iterations) in 0.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%