Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:15:26 2012

Optimize a model with 255 rows, 178 columns and 813 nonzeros
Presolve time: 0.00s
Presolved: 255 rows, 178 columns, 813 nonzeros
Variable types: 0 continuous, 178 integer (178 binary)
Found heuristic solution: objective 51.0000000

Root relaxation: objective 0.000000e+00, 73 iterations, 0.00 seconds

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

     0     0    0.00000    0   50   51.00000    0.00000   100%     -    0s
H    0     0                      34.0000000    0.00000   100%     -    0s
     0     0    0.50000    0   51   34.00000    0.50000  98.5%     -    0s
     0     0    0.50000    0   51   34.00000    0.50000  98.5%     -    0s
     0     0    0.52000    0   51   34.00000    0.52000  98.5%     -    0s
     0     0    0.58030    0   53   34.00000    0.58030  98.3%     -    0s
H    0     0                      33.0000000    0.58030  98.2%     -    0s
     0     2    0.59433    0   53   33.00000    0.59433  98.2%     -    0s
*   34    26              22      32.0000000    3.96875  87.6%  23.9    0s
*   75    52              14      31.0000000    8.37500  73.0%  28.2    0s
*   80    45              14      30.0000000    8.37500  72.1%  26.5    0s
*  200    92              20      29.0000000   12.88889  55.6%  24.5    0s
*  201    84              20      28.0000000   12.88889  54.0%  24.4    0s
*  378    88              11      27.0000000   16.53125  38.8%  23.6    0s

Cutting planes:
  Gomory: 1
  Zero half: 1
  Mod-K: 1

Explored 927 nodes (18924 simplex iterations) in 0.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%