Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:21 2012

Optimize a model with 358 rows, 118 columns and 716 nonzeros
Presolve removed 57 rows and 3 columns
Presolve time: 0.00s
Presolved: 301 rows, 115 columns, 630 nonzeros
Variable types: 0 continuous, 115 integer (115 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 5.350000e+01, 171 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   99   42.00000   53.50000  27.4%     -    0s
     0     0   52.00000    0  104   42.00000   52.00000  23.8%     -    0s
     0     0   51.68220    0  114   42.00000   51.68220  23.1%     -    0s
H    0     0                      45.0000000   51.68220  14.8%     -    0s
H    0     0                      47.0000000   51.68220  10.0%     -    0s
     0     0   50.94640    0  114   47.00000   50.94640  8.40%     -    0s
     0     0   50.61628    0  114   47.00000   50.61628  7.69%     -    0s
     0     0   50.23958    0  114   47.00000   50.23958  6.89%     -    0s
     0     0   49.99739    0  114   47.00000   49.99739  6.38%     -    0s
     0     0   49.86195    0  114   47.00000   49.86195  6.09%     -    0s
     0     0   49.71312    0  114   47.00000   49.71312  5.77%     -    0s
     0     0   49.67103    0  114   47.00000   49.67103  5.68%     -    0s
     0     0   49.67103    0  114   47.00000   49.67103  5.68%     -    0s
     0     2   49.65176    0  114   47.00000   49.65176  5.64%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 69

Explored 33 nodes (1808 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%