Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:22:01 2012 Optimize a model with 66680 rows, 57360 columns and 256206 nonzeros Presolve removed 740 rows and 5021 columns Presolve time: 1.82s Presolved: 65940 rows, 52339 columns, 248962 nonzeros Variable types: 0 continuous, 52339 integer (52339 binary) Found heuristic solution: objective 239.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 36780 3.0000686e+00 1.666364e+02 0.000000e+00 5s 44690 3.0001007e+00 9.829257e+02 0.000000e+00 10s 48834 3.0001111e+00 7.940368e+01 0.000000e+00 15s 51646 3.0001184e+00 1.662032e+02 0.000000e+00 20s 54310 3.0001234e+00 9.029569e+01 0.000000e+00 25s 57122 3.0001284e+00 1.238217e+02 0.000000e+00 30s 59934 3.0001328e+00 9.763195e+02 0.000000e+00 35s 62894 3.0001387e+00 2.130649e+01 0.000000e+00 40s 65706 3.0001432e+00 2.881518e+01 0.000000e+00 45s 68666 3.0001489e+00 1.005196e+01 0.000000e+00 50s 71330 3.0001533e+00 1.263248e+02 0.000000e+00 55s 74142 3.0001587e+00 2.791016e+01 0.000000e+00 60s 76658 3.0001624e+00 6.422796e+00 0.000000e+00 65s 79470 3.0001660e+00 6.044002e+00 0.000000e+00 70s 82282 3.0001697e+00 2.560765e+00 0.000000e+00 75s 82689 3.0000000e+00 0.000000e+00 0.000000e+00 76s Root relaxation: objective 3.000000e+00, 82689 iterations, 75.96 seconds Total elapsed time = 118.26s 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 84 239.00000 3.00000 98.7% - 120s H 0 0 3.0000000 3.00000 0.0% - 120s Explored 0 nodes (161339 simplex iterations) in 120.40 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%