Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:17:50 2012

Optimize a model with 49607 rows, 45156 columns and 192918 nonzeros
Presolve removed 23 rows and 4454 columns
Presolve time: 1.07s
Presolved: 49584 rows, 40702 columns, 187998 nonzeros
Variable types: 0 continuous, 40702 integer (40702 binary)
Found heuristic solution: objective 212.0000000

Root relaxation: objective 2.000000e+00, 28276 iterations, 2.19 seconds
Total elapsed time = 6.45s

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

     0     0    2.00000    0  350  212.00000    2.00000  99.1%     -    7s
H    0     0                     135.0000000    2.00000  98.5%     -    7s
H    0     0                       4.0000000    2.00000  50.0%     -    7s
H    0     0                       3.0000000    2.00000  33.3%     -    7s

Cutting planes:
  Zero half: 1

Explored 0 nodes (95542 simplex iterations) in 7.84 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%