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

Optimize a model with 271 rows, 104 columns and 542 nonzeros
Presolve removed 36 rows and 2 columns
Presolve time: 0.00s
Presolved: 235 rows, 102 columns, 486 nonzeros
Variable types: 0 continuous, 102 integer (102 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 4.750000e+01, 121 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   77   43.00000   47.50000  10.5%     -    0s
     0     0   46.78571    0   86   43.00000   46.78571  8.80%     -    0s
     0     0   46.15000    0   91   43.00000   46.15000  7.33%     -    0s
     0     0   44.80000    0   81   43.00000   44.80000  4.19%     -    0s
     0     0   44.80000    0   90   43.00000   44.80000  4.19%     -    0s
H    0     0                      44.0000000   44.80000  1.82%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 19

Explored 0 nodes (329 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%