Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:50:26 2012 Optimize a model with 54779 rows, 48620 columns and 211858 nonzeros Presolve removed 662 rows and 2 columns Presolve time: 1.42s Presolved: 54337 rows, 48618 columns, 258226 nonzeros Variable types: 0 continuous, 48618 integer (48618 binary) Found heuristic solution: objective 220.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 32067 3.0000771e+00 1.719355e+01 0.000000e+00 5s 36827 3.0000819e+00 7.696429e+00 0.000000e+00 10s 40453 3.0000000e+00 0.000000e+00 0.000000e+00 14s Root relaxation: objective 3.000000e+00, 40453 iterations, 13.92 seconds Total elapsed time = 34.93s Total elapsed time = 38.95s Total elapsed time = 41.62s 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% - 41s Explored 0 nodes (106052 simplex iterations) in 41.92 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%