Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:27:18 2012 Optimize a model with 61715 rows, 49506 columns and 233542 nonzeros Presolve removed 1334 rows and 2 columns Presolve time: 4.46s Presolved: 60603 rows, 49504 columns, 278952 nonzeros Variable types: 0 continuous, 49504 integer (49504 binary) Found heuristic solution: objective 222.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 35138 3.0000867e+00 3.742857e+01 0.000000e+00 5s 39862 3.0000916e+00 2.755089e+01 0.000000e+00 10s 42986 3.0000941e+00 2.957988e+02 0.000000e+00 15s 46110 3.0000963e+00 3.069965e+02 0.000000e+00 20s 49234 3.0000985e+00 3.258637e+01 0.000000e+00 25s 52216 3.0001008e+00 9.944683e+01 0.000000e+00 30s 55198 3.0001028e+00 1.207939e+01 0.000000e+00 35s 58180 3.0001042e+00 4.034566e+01 0.000000e+00 40s 61020 3.0001054e+00 1.754577e+01 0.000000e+00 45s 63718 3.0001065e+00 1.440607e+01 0.000000e+00 50s 66558 3.0001078e+00 8.915807e+00 0.000000e+00 55s 69398 3.0001089e+00 4.111203e+00 0.000000e+00 60s 70544 3.0000000e+00 0.000000e+00 0.000000e+00 62s Root relaxation: objective 3.000000e+00, 70544 iterations, 62.16 seconds Total elapsed time = 113.68s Total elapsed time = 117.79s Total elapsed time = 120.12s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 168 222.00000 3.00000 98.6% - 120s H 0 0 3.0000000 3.00000 0.0% - 120s Explored 0 nodes (156789 simplex iterations) in 120.54 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%