Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:03:05 2012 Optimize a model with 53260 rows, 49062 columns and 207738 nonzeros Presolve removed 913 rows and 5969 columns Presolve time: 1.36s Presolved: 52347 rows, 43093 columns, 199087 nonzeros Variable types: 0 continuous, 43093 integer (43093 binary) Found heuristic solution: objective 221.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27391 3.0000824e+00 1.300000e+01 0.000000e+00 5s 32578 3.0000843e+00 1.233059e+01 0.000000e+00 10s 36834 3.0000897e+00 5.803435e+00 0.000000e+00 15s 39863 3.0000000e+00 0.000000e+00 0.000000e+00 18s Root relaxation: objective 3.000000e+00, 39863 iterations, 18.22 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% - 40s Explored 0 nodes (78657 simplex iterations) in 40.29 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%