Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:47 2012

Optimize a model with 277 rows, 77 columns and 554 nonzeros
Presolve removed 98 rows and 3 columns
Presolve time: 0.00s
Presolved: 179 rows, 74 columns, 416 nonzeros
Variable types: 0 continuous, 74 integer (74 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.020000e+01, 118 iterations, 0.00 seconds

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

     0     0   30.20000    0   65   26.00000   30.20000  16.2%     -    0s
H    0     0                      27.0000000   30.20000  11.9%     -    0s
     0     0   29.58621    0   67   27.00000   29.58621  9.58%     -    0s
H    0     0                      28.0000000   29.58621  5.67%     -    0s
     0     0   29.30097    0   69   28.00000   29.30097  4.65%     -    0s
     0     0   29.20000    0   67   28.00000   29.20000  4.29%     -    0s
     0     0   29.00000    0   57   28.00000   29.00000  3.57%     -    0s
     0     0   29.00000    0   66   28.00000   29.00000  3.57%     -    0s
     0     0   29.00000    0   48   28.00000   29.00000  3.57%     -    0s
     0     2   29.00000    0   48   28.00000   29.00000  3.57%     -    0s

Explored 3 nodes (402 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%