Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:06:16 2012

Optimize a model with 253 rows, 132 columns and 847 nonzeros
Presolve removed 110 rows and 0 columns
Presolve time: 0.00s
Presolved: 143 rows, 132 columns, 594 nonzeros
Variable types: 0 continuous, 132 integer (132 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 3.000000e+00, 101 iterations, 0.00 seconds

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

     0     0    3.00000    0   16    7.00000    3.00000  57.1%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   16    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   23    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   35    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   14    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   14    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   14    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   14    4.00000    3.00000  25.0%     -    0s
     0     2    3.00000    0   14    4.00000    3.00000  25.0%     -    0s

Explored 3 nodes (2590 simplex iterations) in 0.05 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%