Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:31:21 2012

Optimize a model with 49219 rows, 46010 columns and 192598 nonzeros
Presolve removed 28 rows and 5566 columns
Presolve time: 1.11s
Presolved: 49191 rows, 40444 columns, 186574 nonzeros
Variable types: 0 continuous, 40444 integer (40444 binary)
Found heuristic solution: objective 214.0000000

Root relaxation: objective 2.000000e+00, 30429 iterations, 2.92 seconds
Total elapsed time = 7.01s

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

     0     0    2.00000    0  364  214.00000    2.00000  99.1%     -    8s
H    0     0                     195.0000000    2.00000  99.0%     -    8s
H    0     0                       4.0000000    2.00000  50.0%     -    8s
H    0     0                       3.0000000    2.00000  33.3%     -    8s

Cutting planes:
  Zero half: 1

Explored 0 nodes (98793 simplex iterations) in 8.52 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%