Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:20:46 2012 Optimize a model with 57149 rows, 50850 columns and 221173 nonzeros Presolve removed 452 rows and 2 columns Presolve time: 1.44s Presolved: 56922 rows, 50848 columns, 270169 nonzeros Variable types: 0 continuous, 50848 integer (50848 binary) Found heuristic solution: objective 225.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 35937 3.0001310e+00 2.765000e+02 0.000000e+00 5s 41220 3.0001564e+00 3.478947e+01 0.000000e+00 10s 46208 3.0001662e+00 1.175075e+02 0.000000e+00 15s 50348 3.0001680e+00 5.805128e+01 0.000000e+00 20s 55040 3.0001708e+00 1.688636e+00 0.000000e+00 25s 57496 3.0000000e+00 0.000000e+00 0.000000e+00 28s Root relaxation: objective 3.000000e+00, 57496 iterations, 27.60 seconds Total elapsed time = 48.91s Total elapsed time = 54.27s Total elapsed time = 58.01s 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% - 58s Explored 0 nodes (119704 simplex iterations) in 58.73 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%