Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:17 2012

Optimize a model with 303 rows, 114 columns and 606 nonzeros
Presolve removed 74 rows and 12 columns
Presolve time: 0.00s
Presolved: 229 rows, 102 columns, 472 nonzeros
Variable types: 0 continuous, 102 integer (102 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 5.150000e+01, 134 iterations, 0.00 seconds

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

     0     0   51.50000    0   83   42.00000   51.50000  22.6%     -    0s
     0     0   50.00000    0   86   42.00000   50.00000  19.0%     -    0s
H    0     0                      46.0000000   50.00000  8.70%     -    0s
     0     0   49.70000    0   89   46.00000   49.70000  8.04%     -    0s
     0     0   49.20000    0   91   46.00000   49.20000  6.96%     -    0s
H    0     0                      47.0000000   49.20000  4.68%     -    0s
     0     0   48.82759    0   98   47.00000   48.82759  3.89%     -    0s
     0     0   48.76471    0   93   47.00000   48.76471  3.75%     -    0s
H    0     0                      48.0000000   48.76471  1.59%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 18

Explored 0 nodes (417 simplex iterations) in 0.02 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%