Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:24 2012

Optimize a model with 373 rows, 121 columns and 746 nonzeros
Presolve removed 55 rows and 0 columns
Presolve time: 0.00s
Presolved: 318 rows, 121 columns, 671 nonzeros
Variable types: 0 continuous, 121 integer (121 binary)
Found heuristic solution: objective 41.0000000

Root relaxation: objective 5.350000e+01, 195 iterations, 0.00 seconds

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

     0     0   53.50000    0  115   41.00000   53.50000  30.5%     -    0s
H    0     0                      46.0000000   53.50000  16.3%     -    0s
     0     0   52.69956    0  116   46.00000   52.69956  14.6%     -    0s
     0     0   52.18817    0  119   46.00000   52.18817  13.5%     -    0s
     0     0   51.66066    0  119   46.00000   51.66066  12.3%     -    0s
H    0     0                      47.0000000   51.66066  9.92%     -    0s
     0     0   51.17411    0  120   47.00000   51.17411  8.88%     -    0s
     0     0   50.84588    0  120   47.00000   50.84588  8.18%     -    0s
     0     0   50.46400    0  119   47.00000   50.46400  7.37%     -    0s
     0     0   50.35432    0  119   47.00000   50.35432  7.14%     -    0s
     0     0   50.29571    0  119   47.00000   50.29571  7.01%     -    0s
     0     0   50.29310    0  119   47.00000   50.29310  7.01%     -    0s
     0     0   50.29310    0  118   47.00000   50.29310  7.01%     -    0s
     0     2   50.25385    0  118   47.00000   50.25385  6.92%     -    0s
*   13     7               9      48.0000000   50.25385  4.70%  29.2    0s
*   32     0               3      49.0000000   49.00000   0.0%  25.9    0s

Cutting planes:
  Zero half: 56

Explored 33 nodes (1657 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.900000000000e+01, best bound 4.900000000000e+01, gap 0.0%