Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:31:05 2012 Optimize a model with 60224 rows, 48180 columns and 227758 nonzeros Presolve removed 878 rows and 2 columns Presolve time: 4.35s Presolved: 59565 rows, 48178 columns, 272987 nonzeros Variable types: 0 continuous, 48178 integer (48178 binary) Found heuristic solution: objective 219.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27744 3.0000890e+00 6.062500e+01 0.000000e+00 5s 32293 3.0000913e+00 6.687414e+01 0.000000e+00 10s 35395 3.0000939e+00 2.868541e+02 0.000000e+00 15s 38497 3.0000960e+00 5.969383e+01 0.000000e+00 20s 41740 3.0000983e+00 1.452763e+02 0.000000e+00 25s 45124 3.0001013e+00 7.375792e+00 0.000000e+00 30s 48508 3.0001049e+00 7.432648e+02 0.000000e+00 35s 51751 3.0001080e+00 7.109375e+00 0.000000e+00 40s 52685 3.0000000e+00 0.000000e+00 0.000000e+00 41s Root relaxation: objective 3.000000e+00, 52685 iterations, 41.34 seconds Total elapsed time = 93.08s Total elapsed time = 95.59s 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% - 96s Explored 0 nodes (127702 simplex iterations) in 96.34 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%