Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:25 2012

Optimize a model with 359 rows, 121 columns and 718 nonzeros
Presolve removed 65 rows and 1 columns
Presolve time: 0.00s
Presolved: 294 rows, 120 columns, 625 nonzeros
Variable types: 0 continuous, 120 integer (120 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 5.337500e+01, 183 iterations, 0.00 seconds

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

     0     0   53.37500    0  107   45.00000   53.37500  18.6%     -    0s
     0     0   51.94737    0  115   45.00000   51.94737  15.4%     -    0s
H    0     0                      48.0000000   51.94737  8.22%     -    0s
     0     0   51.23077    0  111   48.00000   51.23077  6.73%     -    0s
H    0     0                      49.0000000   51.23077  4.55%     -    0s
     0     0   50.70000    0  118   49.00000   50.70000  3.47%     -    0s
     0     0   50.28571    0  117   49.00000   50.28571  2.62%     -    0s
     0     0     cutoff    0        49.00000   49.99995  2.04%     -    0s

Cutting planes:
  Zero half: 69

Explored 0 nodes (565 simplex iterations) in 0.03 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%