Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:10 2012

Optimize a model with 111 rows, 21 columns and 222 nonzeros
Presolve removed 75 rows and 1 columns
Presolve time: 0.00s
Presolved: 36 rows, 20 columns, 139 nonzeros
Variable types: 0 continuous, 20 integer (20 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 5.200000e+00, 21 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    5.20000    0   14    4.00000    5.20000  30.0%     -    0s
H    0     0                       5.0000000    5.20000  4.00%     -    0s

Explored 0 nodes (28 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%