Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:19 2012

Optimize a model with 61 rows, 60 columns and 210 nonzeros
Presolve removed 0 rows and 5 columns
Presolve time: 0.00s
Presolved: 61 rows, 55 columns, 205 nonzeros
Variable types: 0 continuous, 55 integer (54 binary)
Found heuristic solution: objective 13.0000000

Root relaxation: objective 0.000000e+00, 37 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   24   13.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     0    0.37500    0   25    7.00000    0.37500  94.6%     -    0s
H    0     0                       4.0000000    0.37500  90.6%     -    0s
     0     0    1.00000    0   24    4.00000    1.00000  75.0%     -    0s
     0     0    1.00000    0   27    4.00000    1.00000  75.0%     -    0s
     0     0    1.00000    0   27    4.00000    1.00000  75.0%     -    0s
     0     2    1.00000    0   27    4.00000    1.00000  75.0%     -    0s
*   24     4               5       3.0000000    2.33333  22.2%  13.6    0s

Cutting planes:
  Gomory: 3
  Zero half: 3

Explored 25 nodes (549 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%