Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:59:02 2012 Optimize a model with 59023 rows, 47306 columns and 223291 nonzeros Presolve removed 1321 rows and 3691 columns Presolve time: 4.28s Presolved: 57702 rows, 43615 columns, 215815 nonzeros Variable types: 0 continuous, 43615 integer (43615 binary) Found heuristic solution: objective 217.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 32603 3.0000934e+00 2.018140e+01 0.000000e+00 5s 39002 3.0000995e+00 1.727858e+01 0.000000e+00 10s 42616 3.0001032e+00 1.755800e+01 0.000000e+00 15s 46230 3.0001066e+00 1.842579e+01 0.000000e+00 20s 49844 3.0001104e+00 4.507703e+00 0.000000e+00 25s 52279 3.0000000e+00 0.000000e+00 0.000000e+00 29s Root relaxation: objective 3.000000e+00, 52279 iterations, 28.68 seconds Total elapsed time = 81.50s 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% - 87s Explored 0 nodes (127663 simplex iterations) in 87.29 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%