Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:38 2012

Optimize a model with 445 rows, 130 columns and 890 nonzeros
Presolve removed 73 rows and 0 columns
Presolve time: 0.00s
Presolved: 372 rows, 130 columns, 792 nonzeros
Variable types: 0 continuous, 130 integer (130 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 5.700000e+01, 198 iterations, 0.00 seconds

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

     0     0   57.00000    0  108   45.00000   57.00000  26.7%     -    0s
     0     0   55.50000    0  109   45.00000   55.50000  23.3%     -    0s
     0     0   54.82769    0  129   45.00000   54.82769  21.8%     -    0s
     0     0   54.11111    0  128   45.00000   54.11111  20.2%     -    0s
     0     0   53.72293    0  129   45.00000   53.72293  19.4%     -    0s
     0     0   52.92880    0  130   45.00000   52.92880  17.6%     -    0s
     0     0   52.68727    0  130   45.00000   52.68727  17.1%     -    0s
H    0     0                      46.0000000   52.68727  14.5%     -    0s
     0     0   52.57456    0  130   46.00000   52.57456  14.3%     -    0s
     0     0   52.46325    0  129   46.00000   52.46325  14.1%     -    0s
     0     0   52.42072    0  130   46.00000   52.42072  14.0%     -    0s
     0     0   52.42072    0  130   46.00000   52.42072  14.0%     -    0s
     0     2   52.41346    0  130   46.00000   52.41346  13.9%     -    0s
H   29    19                      47.0000000   51.98193  10.6%  50.0    0s
*  136    25               8      48.0000000   51.12205  6.50%  33.4    0s

Cutting planes:
  Gomory: 1
  Zero half: 104

Explored 256 nodes (8837 simplex iterations) in 0.33 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%