Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:21:33 2012

Optimize a model with 65435 rows, 52212 columns and 247378 nonzeros
Presolve removed 2280 rows and 0 columns (presolve time = 5s) ...
Presolve removed 2282 rows and 2 columns
Presolve time: 5.10s
Presolved: 63381 rows, 52210 columns, 293108 nonzeros
Variable types: 0 continuous, 52210 integer (52210 binary)
Found heuristic solution: objective 228.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   31220    3.0000944e+00   2.568421e+01   0.000000e+00      5s
   35435    3.0000969e+00   3.514407e+01   0.000000e+00     10s
   38480    3.0001000e+00   2.698496e+02   0.000000e+00     15s
   41235    3.0001020e+00   3.213791e+01   0.000000e+00     20s
   44425    3.0001060e+00   5.497367e+01   0.000000e+00     25s
   48195    3.0001143e+00   5.374439e+00   0.000000e+00     30s
   48428    3.0000000e+00   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 3.000000e+00, 48428 iterations, 30.39 seconds

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

*    0     0               0       3.0000000    3.00000   0.0%     -   87s

Explored 0 nodes (92214 simplex iterations) in 87.27 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%