Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:33:07 2012

Optimize a model with 494 rows, 137 columns and 988 nonzeros
Presolve removed 95 rows and 0 columns
Presolve time: 0.00s
Presolved: 399 rows, 137 columns, 859 nonzeros
Variable types: 0 continuous, 137 integer (137 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 5.775000e+01, 261 iterations, 0.00 seconds

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

     0     0   57.75000    0  124   51.00000   57.75000  13.2%     -    0s
     0     0   56.66667    0  120   51.00000   56.66667  11.1%     -    0s
     0     0   56.33460    0  135   51.00000   56.33460  10.5%     -    0s
     0     0   55.35798    0  135   51.00000   55.35798  8.55%     -    0s
     0     0   54.53886    0  133   51.00000   54.53886  6.94%     -    0s
     0     0   54.26667    0  132   51.00000   54.26667  6.41%     -    0s
     0     0   54.08660    0  135   51.00000   54.08660  6.05%     -    0s
     0     0   53.90412    0  136   51.00000   53.90412  5.69%     -    0s
     0     0   53.80502    0  136   51.00000   53.80502  5.50%     -    0s
     0     0   53.77925    0  137   51.00000   53.77925  5.45%     -    0s
     0     0   53.77925    0  134   51.00000   53.77925  5.45%     -    0s
     0     2   53.77925    0  134   51.00000   53.77925  5.45%     -    0s
*   26     5               8      52.0000000   53.73097  3.33%  35.9    0s

Cutting planes:
  Zero half: 79

Explored 32 nodes (1919 simplex iterations) in 0.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.200000000000e+01, best bound 5.200000000000e+01, gap 0.0%