Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:07:45 2012

Optimize a model with 54 rows, 90 columns and 216 nonzeros
Presolve removed 1 rows and 9 columns
Presolve time: 0.00s
Presolved: 53 rows, 81 columns, 207 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 4.0000000
Found heuristic solution: objective 2.0000000

Root relaxation: cutoff, 56 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         2.00000    1.00000  50.0%     -    0s

Explored 0 nodes (56 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%