Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:39 2012

Optimize a model with 93 rows, 91 columns and 321 nonzeros
Presolve removed 0 rows and 5 columns
Presolve time: 0.00s
Presolved: 93 rows, 86 columns, 316 nonzeros
Variable types: 0 continuous, 86 integer (85 binary)
Found heuristic solution: objective 15.0000000

Root relaxation: objective 0.000000e+00, 60 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   37   15.00000    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    0.32477    0   40    7.00000    0.32477  95.4%     -    0s
     0     0    0.91324    0   43    7.00000    0.91324  87.0%     -    0s
     0     0    0.91325    0   45    7.00000    0.91325  87.0%     -    0s
     0     0    0.91325    0   45    7.00000    0.91325  87.0%     -    0s
     0     2    0.91349    0   45    7.00000    0.91349  87.0%     -    0s
*    6     6               4       4.0000000    1.59248  60.2%  23.8    0s

Cutting planes:
  Gomory: 4
  Mod-K: 1

Explored 14 nodes (409 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%