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

Optimize a model with 325 rows, 117 columns and 650 nonzeros
Presolve removed 39 rows and 2 columns
Presolve time: 0.00s
Presolved: 286 rows, 115 columns, 589 nonzeros
Variable types: 0 continuous, 115 integer (115 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 5.300000e+01, 156 iterations, 0.00 seconds

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

     0     0   53.00000    0  109   43.00000   53.00000  23.3%     -    0s
H    0     0                      44.0000000   53.00000  20.5%     -    0s
     0     0   52.03846    0  114   44.00000   52.03846  18.3%     -    0s
     0     0   51.20000    0  114   44.00000   51.20000  16.4%     -    0s
H    0     0                      47.0000000   51.20000  8.94%     -    0s
     0     0   51.00587    0  115   47.00000   51.00587  8.52%     -    0s
     0     0   50.64420    0  115   47.00000   50.64420  7.75%     -    0s
     0     0   50.45962    0  114   47.00000   50.45962  7.36%     -    0s
     0     0   50.18148    0  114   47.00000   50.18148  6.77%     -    0s
H    0     0                      48.0000000   50.18148  4.54%     -    0s
     0     0   50.00166    0  114   48.00000   50.00166  4.17%     -    0s
     0     0   50.00166    0  114   48.00000   50.00166  4.17%     -    0s
     0     0   50.00166    0  113   48.00000   50.00166  4.17%     -    0s
     0     2   49.98000    0  113   48.00000   49.98000  4.12%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 50

Explored 18 nodes (1184 simplex iterations) in 0.07 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%