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

Optimize a model with 281 rows, 103 columns and 562 nonzeros
Presolve removed 28 rows and 1 columns
Presolve time: 0.00s
Presolved: 253 rows, 102 columns, 522 nonzeros
Variable types: 0 continuous, 102 integer (102 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 4.800000e+01, 124 iterations, 0.00 seconds

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

     0     0   48.00000    0   92   40.00000   48.00000  20.0%     -    0s
H    0     0                      42.0000000   48.00000  14.3%     -    0s
     0     0   47.00000    0   90   42.00000   47.00000  11.9%     -    0s
     0     0   46.15789    0  100   42.00000   46.15789  9.90%     -    0s
     0     0   45.00000    0   97   42.00000   45.00000  7.14%     -    0s
     0     0   44.78571    0  100   42.00000   44.78571  6.63%     -    0s
     0     0   44.50000    0   85   42.00000   44.50000  5.95%     -    0s
     0     0   44.39000    0   94   42.00000   44.39000  5.69%     -    0s
H    0     0                      43.0000000   44.39000  3.23%     -    0s
     0     0   44.34000    0  101   43.00000   44.34000  3.12%     -    0s
     0     0   44.07273    0   96   43.00000   44.07273  2.49%     -    0s
     0     0     cutoff    0        43.00000   43.99996  2.33%     -    0s

Cutting planes:
  Zero half: 36

Explored 0 nodes (554 simplex iterations) in 0.03 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%