Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:33:22 2012 Optimize a model with 46028 rows, 40602 columns and 177682 nonzeros Presolve removed 404 rows and 2 columns Presolve time: 1.10s Presolved: 45825 rows, 40600 columns, 216624 nonzeros Variable types: 0 continuous, 40600 integer (40600 binary) Found heuristic solution: objective 201.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 29085 3.0000732e+00 5.160000e+01 0.000000e+00 5s 34570 3.0000769e+00 3.654970e+01 0.000000e+00 10s 38854 3.0000810e+00 3.013698e+01 0.000000e+00 15s 43012 3.0000851e+00 1.732196e+01 0.000000e+00 20s 45817 3.0000000e+00 0.000000e+00 0.000000e+00 23s Root relaxation: objective 3.000000e+00, 45817 iterations, 23.36 seconds Total elapsed time = 50.49s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 44 201.00000 3.00000 98.5% - 53s H 0 0 3.0000000 3.00000 0.0% - 53s Explored 0 nodes (98704 simplex iterations) in 53.55 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%