Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:54:53 2012 Optimize a model with 52271 rows, 46872 columns and 202606 nonzeros Presolve removed 1082 rows and 2 columns Presolve time: 1.40s Presolved: 51405 rows, 46870 columns, 246196 nonzeros Variable types: 0 continuous, 46870 integer (46870 binary) Found heuristic solution: objective 216.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 26369 3.0000774e+00 8.655556e+01 0.000000e+00 5s 30715 3.0000000e+00 0.000000e+00 0.000000e+00 9s Root relaxation: objective 3.000000e+00, 30715 iterations, 9.22 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% - 10s Explored 0 nodes (30715 simplex iterations) in 10.78 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%