Gurobi 5.0.1 (linux64) logging started Sat Nov 17 05:58:52 2012 Optimize a model with 65264 rows, 52670 columns and 247318 nonzeros Presolve removed 2750 rows and 2 columns Presolve time: 4.71s Presolved: 62743 rows, 52668 columns, 292343 nonzeros Variable types: 0 continuous, 52668 integer (52668 binary) Found heuristic solution: objective 229.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 34007 3.0000865e+00 1.548485e+01 0.000000e+00 5s 38357 3.0000903e+00 1.493333e+02 0.000000e+00 10s 41547 3.0000935e+00 1.385270e+01 0.000000e+00 15s 44882 3.0000967e+00 2.407368e+02 0.000000e+00 20s 48217 3.0001004e+00 9.973636e+01 0.000000e+00 25s 51262 3.0001042e+00 1.731022e+01 0.000000e+00 30s 53775 3.0000000e+00 0.000000e+00 0.000000e+00 34s Root relaxation: objective 3.000000e+00, 53775 iterations, 34.42 seconds Total elapsed time = 107.81s Total elapsed time = 117.92s 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% - 121s Explored 0 nodes (156130 simplex iterations) in 121.02 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%