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

Optimize a model with 351 rows, 120 columns and 702 nonzeros
Presolve removed 75 rows and 4 columns
Presolve time: 0.00s
Presolved: 276 rows, 116 columns, 588 nonzeros
Variable types: 0 continuous, 116 integer (116 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 5.183333e+01, 168 iterations, 0.00 seconds

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

     0     0   51.83333    0  105   43.00000   51.83333  20.5%     -    0s
     0     0   50.72727    0  110   43.00000   50.72727  18.0%     -    0s
H    0     0                      44.0000000   50.72727  15.3%     -    0s
     0     0   50.04580    0  114   44.00000   50.04580  13.7%     -    0s
H    0     0                      46.0000000   50.04580  8.80%     -    0s
H    0     0                      47.0000000   50.04580  6.48%     -    0s
     0     0   49.90000    0  112   47.00000   49.90000  6.17%     -    0s
     0     0   49.46667    0  107   47.00000   49.46667  5.25%     -    0s
H    0     0                      48.0000000   49.46667  3.06%     -    0s
     0     0   49.38037    0  110   48.00000   49.38037  2.88%     -    0s
H    0     0                      49.0000000   49.38037  0.78%     -    0s

Cutting planes:
  Zero half: 34

Explored 0 nodes (596 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%