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

Optimize a model with 278 rows, 107 columns and 556 nonzeros
Presolve removed 80 rows and 13 columns
Presolve time: 0.00s
Presolved: 198 rows, 94 columns, 416 nonzeros
Variable types: 0 continuous, 94 integer (94 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.766667e+01, 136 iterations, 0.00 seconds

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

     0     0   47.66667    0   87   38.00000   47.66667  25.4%     -    0s
H    0     0                      43.0000000   47.66667  10.9%     -    0s
H    0     0                      45.0000000   47.66667  5.93%     -    0s
     0     0   47.00000    0   87   45.00000   47.00000  4.44%     -    0s
     0     0   46.75000    0   89   45.00000   46.75000  3.89%     -    0s
     0     0   46.29630    0   89   45.00000   46.29630  2.88%     -    0s
     0     0     cutoff    0        45.00000   45.99995  2.22%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 1
  Zero half: 43

Explored 0 nodes (292 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%