Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:33 2012

Optimize a model with 13 rows, 13 columns and 26 nonzeros
Presolve removed 9 rows and 9 columns
Presolve time: 0.00s
Presolved: 4 rows, 4 columns, 8 nonzeros
Variable types: 0 continuous, 4 integer (4 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: cutoff, 2 iterations, 0.00 seconds

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

     0     0     cutoff    0         8.00000    8.99999  12.5%     -    0s

Explored 0 nodes (2 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%