Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:13 2012

Optimize a model with 303 rows, 108 columns and 606 nonzeros
Presolve removed 68 rows and 3 columns
Presolve time: 0.00s
Presolved: 235 rows, 105 columns, 503 nonzeros
Variable types: 0 continuous, 105 integer (105 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 4.700000e+01, 135 iterations, 0.00 seconds

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

     0     0   47.00000    0   58   42.00000   47.00000  11.9%     -    0s
H    0     0                      44.0000000   47.00000  6.82%     -    0s
     0     0   46.33333    0   80   44.00000   46.33333  5.30%     -    0s
     0     0   46.00000    0   62   44.00000   46.00000  4.55%     -    0s
H    0     0                      45.0000000   46.00000  2.22%     -    0s
     0     0     cutoff    0        45.00000   45.99995  2.22%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 52

Explored 0 nodes (376 simplex iterations) in 0.02 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%