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

Optimize a model with 279 rows, 105 columns and 558 nonzeros
Presolve removed 49 rows and 8 columns
Presolve time: 0.00s
Presolved: 230 rows, 97 columns, 477 nonzeros
Variable types: 0 continuous, 97 integer (97 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.850000e+01, 143 iterations, 0.00 seconds

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

     0     0   48.50000    0   81   39.00000   48.50000  24.4%     -    0s
H    0     0                      41.0000000   48.50000  18.3%     -    0s
     0     0   47.43750    0   97   41.00000   47.43750  15.7%     -    0s
     0     0   46.87500    0   94   41.00000   46.87500  14.3%     -    0s
     0     0   46.33333    0   95   41.00000   46.33333  13.0%     -    0s
     0     0   45.84000    0   96   41.00000   45.84000  11.8%     -    0s
H    0     0                      42.0000000   45.84000  9.14%     -    0s
     0     0   45.50000    0   97   42.00000   45.50000  8.33%     -    0s
     0     0   45.44444    0   97   42.00000   45.44444  8.20%     -    0s
     0     0   45.38462    0   97   42.00000   45.38462  8.06%     -    0s
     0     0   45.34884    0   97   42.00000   45.34884  7.97%     -    0s
     0     0   45.34884    0   97   42.00000   45.34884  7.97%     -    0s
H    0     0                      44.0000000   45.34884  3.07%     -    0s
     0     2   45.34884    0   97   44.00000   45.34884  3.07%     -    0s

Cutting planes:
  Zero half: 37

Explored 8 nodes (715 simplex iterations) in 0.05 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%