Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:16 2012

Optimize a model with 306 rows, 111 columns and 612 nonzeros
Presolve removed 85 rows and 12 columns
Presolve time: 0.00s
Presolved: 221 rows, 99 columns, 464 nonzeros
Variable types: 0 continuous, 99 integer (99 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 4.950000e+01, 113 iterations, 0.00 seconds

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

     0     0   49.50000    0   71   43.00000   49.50000  15.1%     -    0s
     0     0   48.75000    0   72   43.00000   48.75000  13.4%     -    0s
H    0     0                      45.0000000   48.75000  8.33%     -    0s
     0     0   48.12500    0   84   45.00000   48.12500  6.94%     -    0s
     0     0   47.77778    0   86   45.00000   47.77778  6.17%     -    0s
H    0     0                      46.0000000   47.77778  3.86%     -    0s
H    0     0                      47.0000000   47.77778  1.65%     -    0s

Cutting planes:
  Zero half: 16

Explored 0 nodes (261 simplex iterations) in 0.02 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%