Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:51:53 2012

Optimize a model with 77804 rows, 61256 columns and 293434 nonzeros
Presolve removed 1254 rows and 4693 columns (presolve time = 5s) ...
Presolve removed 1256 rows and 4695 columns
Presolve time: 6.53s
Presolved: 76548 rows, 56561 columns, 285157 nonzeros
Variable types: 0 continuous, 56561 integer (56561 binary)
Found heuristic solution: objective 247.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   37268    3.0001289e+00   3.625714e+02   0.000000e+00      5s
   41109    3.0001518e+00   7.670000e+01   0.000000e+00     10s
   44585    3.0001627e+00   4.077273e+01   0.000000e+00     15s
   49325    3.0001739e+00   3.672059e+01   0.000000e+00     20s
   53591    3.0001778e+00   5.786235e+02   0.000000e+00     25s
   55645    3.0001811e+00   3.161427e+02   0.000000e+00     30s
   57857    3.0001845e+00   9.623530e+00   0.000000e+00     35s
   60069    3.0001872e+00   4.378526e+01   0.000000e+00     40s
   62281    3.0001906e+00   7.979126e+01   0.000000e+00     45s
   64651    3.0001938e+00   2.578217e+01   0.000000e+00     50s
   67021    3.0001976e+00   2.497866e+02   0.000000e+00     55s
   69391    3.0002009e+00   3.210901e+02   0.000000e+00     60s
   71919    3.0002061e+00   3.486353e+01   0.000000e+00     65s
   74289    3.0002080e+00   3.356212e+00   0.000000e+00     70s
   74885    3.0000000e+00   0.000000e+00   0.000000e+00     72s

Root relaxation: objective 3.000000e+00, 74885 iterations, 71.56 seconds
Total elapsed time = 136.09s
Total elapsed time = 144.94s
Total elapsed time = 148.65s
Total elapsed time = 155.42s

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

     0     0    3.00000    0  140  247.00000    3.00000  98.8%     -  155s
H    0     0                       3.0000000    3.00000   0.0%     -  155s

Explored 0 nodes (198844 simplex iterations) in 155.92 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%