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

Optimize a model with 307 rows, 78 columns and 614 nonzeros
Presolve removed 96 rows and 0 columns
Presolve time: 0.00s
Presolved: 211 rows, 78 columns, 501 nonzeros
Variable types: 0 continuous, 78 integer (78 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 3.028571e+01, 130 iterations, 0.00 seconds

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

     0     0   30.28571    0   75   23.00000   30.28571  31.7%     -    0s
H    0     0                      24.0000000   30.28571  26.2%     -    0s
     0     0   29.85065    0   73   24.00000   29.85065  24.4%     -    0s
H    0     0                      25.0000000   29.85065  19.4%     -    0s
     0     0   29.51456    0   77   25.00000   29.51456  18.1%     -    0s
     0     0   29.29624    0   75   25.00000   29.29624  17.2%     -    0s
     0     0   29.08929    0   76   25.00000   29.08929  16.4%     -    0s
H    0     0                      26.0000000   29.08929  11.9%     -    0s
     0     0   28.89320    0   73   26.00000   28.89320  11.1%     -    0s
     0     0   28.79878    0   74   26.00000   28.79878  10.8%     -    0s
     0     0   28.70223    0   77   26.00000   28.70223  10.4%     -    0s
     0     0   28.69062    0   76   26.00000   28.69062  10.3%     -    0s
     0     0   28.68750    0   76   26.00000   28.68750  10.3%     -    0s
     0     0   28.68750    0   76   26.00000   28.68750  10.3%     -    0s
     0     2   28.68750    0   76   26.00000   28.68750  10.3%     -    0s

Cutting planes:
  Zero half: 36

Explored 37 nodes (1222 simplex iterations) in 0.07 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%