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

Optimize a model with 277 rows, 71 columns and 554 nonzeros
Presolve removed 90 rows and 2 columns
Presolve time: 0.00s
Presolved: 187 rows, 69 columns, 433 nonzeros
Variable types: 0 continuous, 69 integer (69 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 2.740000e+01, 111 iterations, 0.00 seconds

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

     0     0   27.40000    0   61   20.00000   27.40000  37.0%     -    0s
H    0     0                      23.0000000   27.40000  19.1%     -    0s
     0     0   26.85714    0   63   23.00000   26.85714  16.8%     -    0s
     0     0   26.70000    0   67   23.00000   26.70000  16.1%     -    0s
     0     0   26.46667    0   64   23.00000   26.46667  15.1%     -    0s
     0     0   26.02267    0   67   23.00000   26.02267  13.1%     -    0s
     0     0   25.90188    0   69   23.00000   25.90188  12.6%     -    0s
     0     0   25.75676    0   67   23.00000   25.75676  12.0%     -    0s
H    0     0                      24.0000000   25.75676  7.32%     -    0s
     0     0   25.71429    0   67   24.00000   25.71429  7.14%     -    0s
     0     0   25.69697    0   68   24.00000   25.69697  7.07%     -    0s
     0     0   25.69697    0   67   24.00000   25.69697  7.07%     -    0s
     0     2   25.68966    0   67   24.00000   25.68966  7.04%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 36

Explored 18 nodes (692 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%