Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:31:29 2012 Optimize a model with 60383 rows, 49506 columns and 229546 nonzeros Presolve removed 1112 rows and 2 columns Presolve time: 4.51s Presolved: 59493 rows, 49504 columns, 275632 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 37149 2.9818048e+00 1.844817e+02 0.000000e+00 5s 44696 3.0002358e+00 5.773018e+03 0.000000e+00 10s 48080 3.0002632e+00 1.333275e+03 0.000000e+00 15s 51887 3.0002777e+00 3.363457e+02 0.000000e+00 20s 55694 3.0002855e+00 6.545092e+02 0.000000e+00 25s 59219 3.0002913e+00 8.000604e+01 0.000000e+00 30s 62603 3.0002960e+00 2.262144e+01 0.000000e+00 35s 64530 3.0000000e+00 0.000000e+00 0.000000e+00 38s Root relaxation: objective 3.000000e+00, 64530 iterations, 37.71 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% - 76s Explored 0 nodes (98087 simplex iterations) in 76.06 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%