Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:13:44 2012

Optimize a model with 61559 rows, 52212 columns and 235750 nonzeros
Presolve removed 21 rows and 4334 columns
Presolve time: 1.52s
Presolved: 61538 rows, 47878 columns, 230878 nonzeros
Variable types: 0 continuous, 47878 integer (47878 binary)
Found heuristic solution: objective 228.0000000

Root relaxation: objective 2.000000e+00, 34035 iterations, 3.06 seconds
Total elapsed time = 8.45s

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

     0     0    2.00000    0  392  228.00000    2.00000  99.1%     -    9s
H    0     0                     213.0000000    2.00000  99.1%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   10s
H    0     0                       3.0000000    2.00000  33.3%     -   10s

Cutting planes:
  Gomory: 1

Explored 0 nodes (114375 simplex iterations) in 10.48 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%