Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:11 2012

Optimize a model with 273 rows, 103 columns and 546 nonzeros
Presolve removed 69 rows and 9 columns
Presolve time: 0.00s
Presolved: 204 rows, 94 columns, 429 nonzeros
Variable types: 0 continuous, 94 integer (94 binary)
Found heuristic solution: objective 41.0000000

Root relaxation: objective 4.600000e+01, 139 iterations, 0.00 seconds

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

     0     0   46.00000    0   79   41.00000   46.00000  12.2%     -    0s
H    0     0                      45.0000000   46.00000  2.22%     -    0s

Cutting planes:
  Zero half: 1

Explored 0 nodes (218 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.500000000000e+01, best bound 4.600000000000e+01, gap 2.2222%