Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:44 2012

Optimize a model with 243 rows, 71 columns and 486 nonzeros
Presolve removed 74 rows and 0 columns
Presolve time: 0.00s
Presolved: 169 rows, 71 columns, 387 nonzeros
Variable types: 0 continuous, 71 integer (71 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 2.775000e+01, 104 iterations, 0.00 seconds

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

     0     0   27.75000    0   49   21.00000   27.75000  32.1%     -    0s
H    0     0                      23.0000000   27.75000  20.7%     -    0s
H    0     0                      24.0000000   27.75000  15.6%     -    0s
     0     0   27.00000    0   64   24.00000   27.00000  12.5%     -    0s
     0     0   27.00000    0   66   24.00000   27.00000  12.5%     -    0s
H    0     0                      25.0000000   27.00000  8.00%     -    0s
H    0     0                      26.0000000   27.00000  3.85%     -    0s
     0     0   27.00000    0   55   26.00000   27.00000  3.85%     -    0s
     0     0   27.00000    0   57   26.00000   27.00000  3.85%     -    0s
     0     0   27.00000    0   57   26.00000   27.00000  3.85%     -    0s
     0     2   27.00000    0   57   26.00000   27.00000  3.85%     -    0s

Explored 5 nodes (728 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%