Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:52:20 2012

Optimize a model with 261 rows, 178 columns and 828 nonzeros
Presolve time: 0.00s
Presolved: 261 rows, 178 columns, 828 nonzeros
Variable types: 0 continuous, 178 integer (178 binary)
Found heuristic solution: objective 66.0000000
Found heuristic solution: objective 64.0000000

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   48   64.00000    0.00000   100%     -    0s
H    0     0                      49.0000000    0.00000   100%     -    0s
     0     0    0.52174    0   49   49.00000    0.52174  98.9%     -    0s
H    0     0                      46.0000000    0.52174  98.9%     -    0s
     0     0    1.20994    0   52   46.00000    1.20994  97.4%     -    0s
     0     0    1.31336    0   52   46.00000    1.31336  97.1%     -    0s
     0     0    1.31767    0   52   46.00000    1.31767  97.1%     -    0s
     0     2    1.34489    0   52   46.00000    1.34489  97.1%     -    0s
*   26    24              17      32.0000000    4.17586  87.0%  32.2    0s
*  552   179              14      31.0000000   15.75907  49.2%  22.0    0s

Cutting planes:
  Gomory: 3
  Mod-K: 3

Explored 1894 nodes (37841 simplex iterations) in 1.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%