Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:16 2012

Optimize a model with 306 rows, 112 columns and 612 nonzeros
Presolve removed 49 rows and 4 columns
Presolve time: 0.00s
Presolved: 257 rows, 108 columns, 536 nonzeros
Variable types: 0 continuous, 108 integer (108 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 5.050000e+01, 153 iterations, 0.00 seconds

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

     0     0   50.50000    0   93   43.00000   50.50000  17.4%     -    0s
     0     0   49.00000    0   94   43.00000   49.00000  14.0%     -    0s
     0     0   48.66667    0  100   43.00000   48.66667  13.2%     -    0s
H    0     0                      45.0000000   48.66667  8.15%     -    0s
H    0     0                      46.0000000   48.66667  5.80%     -    0s
     0     0   48.50000    0   73   46.00000   48.50000  5.43%     -    0s
     0     0   47.89706    0  103   46.00000   47.89706  4.12%     -    0s
     0     0   47.27778    0  100   46.00000   47.27778  2.78%     -    0s
     0     0   47.00000    0  100   46.00000   47.00000  2.17%     -    0s
     0     0   47.00000    0  100   46.00000   47.00000  2.17%     -    0s
     0     0   47.00000    0   98   46.00000   47.00000  2.17%     -    0s
     0     2   47.00000    0   98   46.00000   47.00000  2.17%     -    0s

Explored 3 nodes (710 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%