Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:10 2012

Optimize a model with 277 rows, 102 columns and 554 nonzeros
Presolve removed 77 rows and 10 columns
Presolve time: 0.00s
Presolved: 200 rows, 92 columns, 424 nonzeros
Variable types: 0 continuous, 92 integer (92 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 4.612500e+01, 150 iterations, 0.00 seconds

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

     0     0   46.12500    0   86   40.00000   46.12500  15.3%     -    0s
H    0     0                      41.0000000   46.12500  12.5%     -    0s
H    0     0                      42.0000000   46.12500  9.82%     -    0s
     0     0   45.00000    0   68   42.00000   45.00000  7.14%     -    0s
     0     0   44.65625    0   87   42.00000   44.65625  6.32%     -    0s
     0     0   44.33333    0   78   42.00000   44.33333  5.56%     -    0s
H    0     0                      43.0000000   44.33333  3.10%     -    0s
H    0     0                      44.0000000   44.33333  0.76%     -    0s

Cutting planes:
  Zero half: 20

Explored 0 nodes (293 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%