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

Optimize a model with 275 rows, 106 columns and 550 nonzeros
Presolve removed 46 rows and 6 columns
Presolve time: 0.00s
Presolved: 229 rows, 100 columns, 479 nonzeros
Variable types: 0 continuous, 100 integer (100 binary)
Found heuristic solution: objective 41.0000000

Root relaxation: objective 4.778571e+01, 160 iterations, 0.00 seconds

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

     0     0   47.78571    0   94   41.00000   47.78571  16.6%     -    0s
     0     0   46.88889    0   91   41.00000   46.88889  14.4%     -    0s
H    0     0                      42.0000000   46.88889  11.6%     -    0s
     0     0   46.80000    0   97   42.00000   46.80000  11.4%     -    0s
     0     0   46.50000    0   98   42.00000   46.50000  10.7%     -    0s
H    0     0                      44.0000000   46.50000  5.68%     -    0s
     0     0   46.25000    0   99   44.00000   46.25000  5.11%     -    0s
     0     0   45.94118    0   98   44.00000   45.94118  4.41%     -    0s
     0     0   45.92308    0   99   44.00000   45.92308  4.37%     -    0s
     0     0   45.90000    0  100   44.00000   45.90000  4.32%     -    0s
     0     0   45.88889    0  100   44.00000   45.88889  4.29%     -    0s
     0     0   45.88889    0   99   44.00000   45.88889  4.29%     -    0s
     0     2   45.88889    0   92   44.00000   45.88889  4.29%     -    0s
*    7     1               2      45.0000000   45.88889  1.98%  24.6    0s

Cutting planes:
  Zero half: 28

Explored 8 nodes (732 simplex iterations) in 0.05 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%