Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:44:02 2012

Optimize a model with 225 rows, 157 columns and 717 nonzeros
Presolve time: 0.00s
Presolved: 225 rows, 157 columns, 717 nonzeros
Variable types: 0 continuous, 157 integer (157 binary)
Found heuristic solution: objective 53.0000000

Root relaxation: objective 0.000000e+00, 78 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   44   53.00000    0.00000   100%     -    0s
H    0     0                      42.0000000    0.00000   100%     -    0s
     0     0    0.55263    0   45   42.00000    0.55263  98.7%     -    0s
     0     0    0.63158    0   47   42.00000    0.63158  98.5%     -    0s
H    0     0                      40.0000000    0.63158  98.4%     -    0s
     0     0    0.63158    0   47   40.00000    0.63158  98.4%     -    0s
     0     2    0.63158    0   47   40.00000    0.63158  98.4%     -    0s
*   32    30              21      38.0000000    4.97953  86.9%  21.4    0s
H   54    38                      31.0000000    5.22760  83.1%  27.1    0s
*   98    54              16      28.0000000    7.36437  73.7%  25.2    0s
*  139    64               9      27.0000000   12.00000  55.6%  25.1    0s
*  142    53              11      26.0000000   12.00000  53.8%  24.8    0s
*  253    54               9      25.0000000   16.40625  34.4%  22.8    0s

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

Explored 557 nodes (11251 simplex iterations) in 0.29 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%