Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:11 2012

Optimize a model with 97 rows, 89 columns and 329 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 97 rows, 88 columns, 328 nonzeros
Variable types: 0 continuous, 88 integer (87 binary)
Found heuristic solution: objective 18.0000000

Root relaxation: objective 0.000000e+00, 56 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   36   18.00000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
     0     0    0.42667    0   38    8.00000    0.42667  94.7%     -    0s
H    0     0                       6.0000000    0.42667  92.9%     -    0s
     0     0    0.85821    0   39    6.00000    0.85821  85.7%     -    0s
     0     0    0.86174    0   40    6.00000    0.86174  85.6%     -    0s
     0     0    0.86174    0   40    6.00000    0.86174  85.6%     -    0s
     0     2    0.86315    0   40    6.00000    0.86315  85.6%     -    0s
*   10     4               6       4.0000000    1.51217  62.2%  17.2    0s

Cutting planes:
  Gomory: 3
  Zero half: 1

Explored 20 nodes (490 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%