Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:21:54 2012 Optimize a model with 56025 rows, 47742 columns and 214728 nonzeros Presolve removed 874 rows and 2 columns Presolve time: 1.48s Presolved: 55369 rows, 47740 columns, 259566 nonzeros Variable types: 0 continuous, 47740 integer (47740 binary) Found heuristic solution: objective 218.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34008 3.0000854e+00 1.721474e+01 0.000000e+00 5s 39762 3.0000942e+00 2.905993e+02 0.000000e+00 10s 44146 3.0000984e+00 2.457317e+02 0.000000e+00 15s 48393 3.0001022e+00 1.282809e+02 0.000000e+00 20s 52640 3.0001056e+00 1.463226e+01 0.000000e+00 25s 54969 3.0000000e+00 0.000000e+00 0.000000e+00 28s Root relaxation: objective 3.000000e+00, 54969 iterations, 27.93 seconds Total elapsed time = 47.17s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 81 218.00000 3.00000 98.6% - 48s H 0 0 3.0000000 3.00000 0.0% - 49s Explored 0 nodes (114777 simplex iterations) in 49.12 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%