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

Optimize a model with 378 rows, 122 columns and 756 nonzeros
Presolve removed 76 rows and 4 columns
Presolve time: 0.00s
Presolved: 302 rows, 118 columns, 640 nonzeros
Variable types: 0 continuous, 118 integer (118 binary)
Found heuristic solution: objective 47.0000000

Root relaxation: objective 5.450000e+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   54.50000    0   85   47.00000   54.50000  16.0%     -    0s
     0     0   53.63636    0  112   47.00000   53.63636  14.1%     -    0s
     0     0   52.09091    0  114   47.00000   52.09091  10.8%     -    0s
     0     0   51.64706    0  115   47.00000   51.64706  9.89%     -    0s
     0     0   51.46667    0  116   47.00000   51.46667  9.50%     -    0s
     0     0   51.30769    0  116   47.00000   51.30769  9.17%     -    0s
     0     0   51.25397    0  117   47.00000   51.25397  9.05%     -    0s
     0     0   50.99728    0  117   47.00000   50.99728  8.50%     -    0s
     0     0   50.83262    0  117   47.00000   50.83262  8.15%     -    0s
     0     0   50.70364    0  116   47.00000   50.70364  7.88%     -    0s
     0     0   50.64100    0  115   47.00000   50.64100  7.75%     -    0s
     0     0   50.63318    0  117   47.00000   50.63318  7.73%     -    0s
     0     0   50.63318    0  117   47.00000   50.63318  7.73%     -    0s
H    0     0                      48.0000000   50.63318  5.49%     -    0s
     0     2   50.63318    0  117   48.00000   50.63318  5.49%     -    0s

Cutting planes:
  Zero half: 60

Explored 39 nodes (2022 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0%