Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:30 2012

Optimize a model with 394 rows, 125 columns and 788 nonzeros
Presolve removed 61 rows and 2 columns
Presolve time: 0.00s
Presolved: 333 rows, 123 columns, 697 nonzeros
Variable types: 0 continuous, 123 integer (123 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 5.550000e+01, 188 iterations, 0.00 seconds

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

     0     0   55.50000    0   97   45.00000   55.50000  23.3%     -    0s
     0     0   54.83333    0  119   45.00000   54.83333  21.9%     -    0s
H    0     0                      49.0000000   54.83333  11.9%     -    0s
     0     0   53.93182    0  121   49.00000   53.93182  10.1%     -    0s
     0     0   53.45833    0  119   49.00000   53.45833  9.10%     -    0s
     0     0   53.09665    0  123   49.00000   53.09665  8.36%     -    0s
     0     0   52.88023    0  123   49.00000   52.88023  7.92%     -    0s
     0     0   52.63825    0  123   49.00000   52.63825  7.43%     -    0s
     0     0   52.55575    0  122   49.00000   52.55575  7.26%     -    0s
     0     0   52.42682    0  122   49.00000   52.42682  6.99%     -    0s
     0     0   52.40465    0  123   49.00000   52.40465  6.95%     -    0s
     0     0   52.40465    0  123   49.00000   52.40465  6.95%     -    0s
     0     2   52.39615    0  123   49.00000   52.39615  6.93%     -    0s
*    7     7               5      50.0000000   52.38972  4.78%  35.4    0s

Cutting planes:
  Zero half: 58

Explored 41 nodes (1631 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0%