Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:13 2012

Optimize a model with 270 rows, 107 columns and 540 nonzeros
Presolve removed 37 rows and 4 columns
Presolve time: 0.00s
Presolved: 233 rows, 103 columns, 479 nonzeros
Variable types: 0 continuous, 103 integer (103 binary)
Found heuristic solution: objective 41.0000000

Root relaxation: objective 5.050000e+01, 127 iterations, 0.00 seconds

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

     0     0   50.50000    0   81   41.00000   50.50000  23.2%     -    0s
H    0     0                      42.0000000   50.50000  20.2%     -    0s
     0     0   48.42857    0   98   42.00000   48.42857  15.3%     -    0s
H    0     0                      43.0000000   48.42857  12.6%     -    0s
     0     0   48.14286    0   97   43.00000   48.14286  12.0%     -    0s
H    0     0                      44.0000000   48.14286  9.42%     -    0s
     0     0   47.66667    0   97   44.00000   47.66667  8.33%     -    0s
     0     0   47.43478    0   97   44.00000   47.43478  7.81%     -    0s
H    0     0                      45.0000000   47.43478  5.41%     -    0s
     0     0   47.20000    0   98   45.00000   47.20000  4.89%     -    0s
H    0     0                      46.0000000   47.20000  2.61%     -    0s
     0     0     cutoff    0        46.00000   46.99995  2.17%     -    0s

Cutting planes:
  Zero half: 96

Explored 0 nodes (425 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%