Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:33:55 2012

Optimize a model with 496 rows, 143 columns and 992 nonzeros
Presolve removed 128 rows and 6 columns
Presolve time: 0.00s
Presolved: 368 rows, 137 columns, 789 nonzeros
Variable types: 0 continuous, 137 integer (137 binary)
Found heuristic solution: objective 47.0000000

Root relaxation: objective 5.980000e+01, 245 iterations, 0.00 seconds

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

     0     0   59.80000    0  127   47.00000   59.80000  27.2%     -    0s
H    0     0                      53.0000000   59.80000  12.8%     -    0s
     0     0   58.53261    0  130   53.00000   58.53261  10.4%     -    0s
     0     0   57.85185    0  131   53.00000   57.85185  9.15%     -    0s
     0     0   57.59756    0  125   53.00000   57.59756  8.67%     -    0s
     0     0   57.17857    0  134   53.00000   57.17857  7.88%     -    0s
     0     0   57.10417    0  132   53.00000   57.10417  7.74%     -    0s
     0     0   57.08784    0  134   53.00000   57.08784  7.71%     -    0s
     0     0   57.08784    0  127   53.00000   57.08784  7.71%     -    0s
     0     2   57.08056    0  127   53.00000   57.08056  7.70%     -    0s
*  127    16               7      54.0000000   55.66667  3.09%  26.4    0s

Cutting planes:
  Clique: 1
  Zero half: 76

Explored 150 nodes (4627 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.400000000000e+01, best bound 5.400000000000e+01, gap 0.0%