Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:10:29 2012

Optimize a model with 2412 rows, 1332 columns and 8424 nonzeros
Presolve removed 505 rows and 36 columns
Presolve time: 0.04s
Presolved: 1907 rows, 1296 columns, 7200 nonzeros
Variable types: 0 continuous, 1296 integer (1296 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 3.000000e+00, 2235 iterations, 0.10 seconds

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

     0     0    3.00000    0   34   21.00000    3.00000  85.7%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
H    0     0                       3.0000000    3.00000   0.0%     -    0s

Explored 0 nodes (4980 simplex iterations) in 0.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%