Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:47:15 2012

Optimize a model with 231 rows, 162 columns and 737 nonzeros
Presolve time: 0.00s
Presolved: 231 rows, 162 columns, 737 nonzeros
Variable types: 0 continuous, 162 integer (162 binary)
Found heuristic solution: objective 52.0000000

Root relaxation: objective 0.000000e+00, 77 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   47   52.00000    0.00000   100%     -    0s
H    0     0                      49.0000000    0.00000   100%     -    0s
H    0     0                      48.0000000    0.00000   100%     -    0s
     0     0    0.78098    0   49   48.00000    0.78098  98.4%     -    0s
     0     0    0.91615    0   49   48.00000    0.91615  98.1%     -    0s
     0     0    0.92365    0   51   48.00000    0.92365  98.1%     -    0s
     0     0    0.92365    0   51   48.00000    0.92365  98.1%     -    0s
     0     2    0.95866    0   51   48.00000    0.95866  98.0%     -    0s
*   26    26              15      35.0000000    4.15330  88.1%  29.1    0s
*   59    46              22      34.0000000    4.30924  87.3%  23.7    0s
*   90    63              20      30.0000000    7.88235  73.7%  22.7    0s
*  194   125              16      29.0000000   10.28571  64.5%  21.5    0s
*  199   119              16      28.0000000   10.28571  63.3%  21.1    0s
*  210   108              15      27.0000000   10.28571  61.9%  20.5    0s
*  518   146              12      26.0000000   15.00000  42.3%  18.7    0s
*  520   134              11      25.0000000   15.00000  40.0%  18.6    0s

Cutting planes:
  Gomory: 1
  Zero half: 8

Explored 1179 nodes (19959 simplex iterations) in 0.56 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%