Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:26 2012

Optimize a model with 63 rows, 63 columns and 218 nonzeros
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 63 rows, 61 columns, 216 nonzeros
Variable types: 0 continuous, 61 integer (60 binary)
Found heuristic solution: objective 11.0000000

Root relaxation: objective 0.000000e+00, 40 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   27   11.00000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
H    0     0                       6.0000000    0.00000   100%     -    0s
H    0     0                       4.0000000    0.00000   100%     -    0s
     0     0    0.40741    0   28    4.00000    0.40741  89.8%     -    0s
     0     0    1.00000    0   32    4.00000    1.00000  75.0%     -    0s
     0     0    1.00000    0   31    4.00000    1.00000  75.0%     -    0s
     0     0    1.00000    0   32    4.00000    1.00000  75.0%     -    0s
     0     0    1.00000    0   30    4.00000    1.00000  75.0%     -    0s
     0     2    1.00000    0   30    4.00000    1.00000  75.0%     -    0s
*   11     7               8       3.0000000    1.00000  66.7%  13.8    0s

Cutting planes:
  Gomory: 3
  Zero half: 12

Explored 57 nodes (678 simplex iterations) in 0.02 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%