Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:32 2012

Optimize a model with 97 rows, 92 columns and 332 nonzeros
Presolve removed 0 rows and 3 columns
Presolve time: 0.00s
Presolved: 97 rows, 89 columns, 329 nonzeros
Variable types: 0 continuous, 89 integer (88 binary)
Found heuristic solution: objective 16.0000000

Root relaxation: objective 0.000000e+00, 54 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   16.00000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
H    0     0                       5.0000000    0.00000   100%     -    0s
     0     0    0.31461    0   38    5.00000    0.31461  93.7%     -    0s
     0     0    0.80522    0   45    5.00000    0.80522  83.9%     -    0s
     0     0    0.80522    0   47    5.00000    0.80522  83.9%     -    0s
     0     0    0.80522    0   44    5.00000    0.80522  83.9%     -    0s
     0     2    0.80754    0   44    5.00000    0.80754  83.8%     -    0s
*    9     3               9       4.0000000    1.45089  63.7%  16.4    0s

Cutting planes:
  Gomory: 4
  Mod-K: 1

Explored 15 nodes (493 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%