Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:19 2012

Optimize a model with 330 rows, 115 columns and 660 nonzeros
Presolve removed 51 rows and 0 columns
Presolve time: 0.00s
Presolved: 279 rows, 115 columns, 590 nonzeros
Variable types: 0 continuous, 115 integer (115 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 5.066667e+01, 175 iterations, 0.00 seconds

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

     0     0   50.66667    0  103   42.00000   50.66667  20.6%     -    0s
H    0     0                      45.0000000   50.66667  12.6%     -    0s
     0     0   49.54762    0  106   45.00000   49.54762  10.1%     -    0s
H    0     0                      46.0000000   49.54762  7.71%     -    0s
     0     0   48.95872    0  109   46.00000   48.95872  6.43%     -    0s
     0     0   48.66038    0  106   46.00000   48.66038  5.78%     -    0s
     0     0   48.57576    0  112   46.00000   48.57576  5.60%     -    0s
     0     0   48.40051    0  107   46.00000   48.40051  5.22%     -    0s
     0     0   48.21667    0  108   46.00000   48.21667  4.82%     -    0s
H    0     0                      47.0000000   48.21667  2.59%     -    0s
     0     0     cutoff    0        47.00000   47.99995  2.13%     -    0s

Cutting planes:
  Zero half: 62

Explored 0 nodes (583 simplex iterations) in 0.04 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%