Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:50:46 2012

Optimize a model with 60835 rows, 51756 columns and 233127 nonzeros
Presolve removed 25 rows and 5223 columns
Presolve time: 1.45s
Presolved: 60810 rows, 46533 columns, 227370 nonzeros
Variable types: 0 continuous, 46533 integer (46533 binary)
Found heuristic solution: objective 227.0000000

Root relaxation: objective 2.000000e+00, 34472 iterations, 3.23 seconds
Total elapsed time = 8.62s

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

     0     0    2.00000    0  392  227.00000    2.00000  99.1%     -   10s
H    0     0                     218.0000000    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
     0     0 infeasible    0         3.00000    2.00000  33.3%     -   10s

Cutting planes:
  Gomory: 2
  Clique: 4
  Zero half: 41

Explored 0 nodes (112603 simplex iterations) in 10.75 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%