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

Optimize a model with 277 rows, 104 columns and 554 nonzeros
Presolve removed 56 rows and 8 columns
Presolve time: 0.00s
Presolved: 221 rows, 96 columns, 459 nonzeros
Variable types: 0 continuous, 96 integer (96 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.677778e+01, 140 iterations, 0.00 seconds

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

     0     0   46.77778    0   91   39.00000   46.77778  19.9%     -    0s
H    0     0                      42.0000000   46.77778  11.4%     -    0s
H    0     0                      43.0000000   46.77778  8.79%     -    0s
     0     0   45.00000    0   83   43.00000   45.00000  4.65%     -    0s
     0     0   44.57143    0   84   43.00000   44.57143  3.65%     -    0s
     0     0   44.37500    0   85   43.00000   44.37500  3.20%     -    0s
     0     0   44.33333    0   85   43.00000   44.33333  3.10%     -    0s
     0     0     cutoff    0        43.00000   43.99996  2.33%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 96

Explored 0 nodes (330 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%