Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:11 2012

Optimize a model with 248 rows, 103 columns and 496 nonzeros
Presolve removed 52 rows and 6 columns
Presolve time: 0.00s
Presolved: 196 rows, 97 columns, 407 nonzeros
Variable types: 0 continuous, 97 integer (97 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.750000e+01, 128 iterations, 0.00 seconds

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

     0     0   47.50000    0   87   39.00000   47.50000  21.8%     -    0s
H    0     0                      42.0000000   47.50000  13.1%     -    0s
     0     0   46.50000    0   79   42.00000   46.50000  10.7%     -    0s
     0     0   46.09375    0   91   42.00000   46.09375  9.75%     -    0s
H    0     0                      45.0000000   46.09375  2.43%     -    0s
     0     0     cutoff    0        45.00000   45.99995  2.22%     -    0s

Cutting planes:
  Gomory: 3
  Zero half: 40

Explored 0 nodes (263 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%