Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:30 2012

Optimize a model with 275 rows, 302 columns and 987 nonzeros
Presolve removed 0 rows and 27 columns
Presolve time: 0.00s
Presolved: 275 rows, 275 columns, 960 nonzeros
Variable types: 0 continuous, 275 integer (274 binary)
Found heuristic solution: objective 48.0000000

Root relaxation: objective 0.000000e+00, 167 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  100   48.00000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
H    0     0                      19.0000000    0.00000   100%     -    0s
     0     0    0.00000    0  101   19.00000    0.00000   100%     -    0s
H    0     0                      15.0000000    0.00000   100%     -    0s
     0     0    0.00000    0  100   15.00000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
     0     2    0.00000    0  100   10.00000    0.00000   100%     -    0s
H   27    23                       4.0000000    0.83721  79.1%  20.5    0s
*   30     8              19       2.0000000    0.83721  58.1%  19.4    0s

Explored 36 nodes (1434 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%