Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:21 2012

Optimize a model with 349 rows, 118 columns and 698 nonzeros
Presolve removed 83 rows and 12 columns
Presolve time: 0.00s
Presolved: 266 rows, 106 columns, 557 nonzeros
Variable types: 0 continuous, 106 integer (106 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 5.350000e+01, 161 iterations, 0.00 seconds

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

     0     0   53.50000    0   87   44.00000   53.50000  21.6%     -    0s
     0     0   51.66667    0   97   44.00000   51.66667  17.4%     -    0s
     0     0   51.19718    0  106   44.00000   51.19718  16.4%     -    0s
H    0     0                      45.0000000   51.19718  13.8%     -    0s
H    0     0                      46.0000000   51.19718  11.3%     -    0s
     0     0   50.52174    0  100   46.00000   50.52174  9.83%     -    0s
     0     0   50.00000    0  101   46.00000   50.00000  8.70%     -    0s
     0     0   49.75676    0  101   46.00000   49.75676  8.17%     -    0s
H    0     0                      47.0000000   49.75676  5.87%     -    0s
     0     0   49.54533    0  101   47.00000   49.54533  5.42%     -    0s
     0     0   49.45835    0  101   47.00000   49.45835  5.23%     -    0s
     0     0   49.41196    0  101   47.00000   49.41196  5.13%     -    0s
     0     0   49.41196    0  101   47.00000   49.41196  5.13%     -    0s
     0     2   49.36864    0  101   47.00000   49.36864  5.04%     -    0s
H    2     2                      48.0000000   49.34569  2.80%  22.5    0s

Cutting planes:
  Gomory: 2
  Zero half: 42

Explored 11 nodes (898 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0%