Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:54 2012

Optimize a model with 247 rows, 280 columns and 895 nonzeros
Presolve removed 0 rows and 37 columns
Presolve time: 0.00s
Presolved: 247 rows, 243 columns, 858 nonzeros
Variable types: 0 continuous, 243 integer (242 binary)
Found heuristic solution: objective 32.0000000

Root relaxation: objective 0.000000e+00, 158 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   96   32.00000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
H    0     0                      20.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   96   20.00000    0.00000   100%     -    0s
H    0     0                      17.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   96   17.00000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
H    0     0                       4.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   96    4.00000    0.00000   100%     -    0s
*   23     5              20       3.0000000    0.50000  83.3%  20.3    0s

Cutting planes:
  Gomory: 1

Explored 37 nodes (1316 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%