Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:01:19 2012 Optimize a model with 48959 rows, 41820 columns and 187678 nonzeros Presolve removed 1226 rows and 2 columns Presolve time: 1.21s Presolved: 47937 rows, 41818 columns, 225766 nonzeros Variable types: 0 continuous, 41818 integer (41818 binary) Found heuristic solution: objective 204.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 25710 3.0000777e+00 1.417647e+01 0.000000e+00 5s 30702 3.0000796e+00 6.482542e+00 0.000000e+00 10s 33610 3.0000000e+00 0.000000e+00 0.000000e+00 13s Root relaxation: objective 3.000000e+00, 33610 iterations, 13.00 seconds Total elapsed time = 27.57s Total elapsed time = 30.78s 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% - 30s Explored 0 nodes (86118 simplex iterations) in 30.95 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%