Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:06:30 2012 Optimize a model with 71784 rows, 60270 columns and 274398 nonzeros Presolve removed 513 rows and 5147 columns Presolve time: 1.97s Presolved: 71271 rows, 55123 columns, 267446 nonzeros Variable types: 0 continuous, 55123 integer (55123 binary) Found heuristic solution: objective 245.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 42083 2.9877540e+00 1.173148e+01 0.000000e+00 5s 55163 3.0001080e+00 2.769452e+02 0.000000e+00 10s 58223 3.0001149e+00 4.707448e+02 0.000000e+00 15s 61283 3.0001220e+00 8.495699e+01 0.000000e+00 20s 63578 3.0001274e+00 3.419468e+01 0.000000e+00 25s 66332 3.0001325e+00 1.531041e+02 0.000000e+00 30s 69086 3.0001380e+00 1.455836e+02 0.000000e+00 35s 71687 3.0001427e+00 1.258936e+02 0.000000e+00 40s 74288 3.0001468e+00 1.218135e+01 0.000000e+00 45s 76889 3.0001511e+00 1.315837e+01 0.000000e+00 50s 79490 3.0001556e+00 3.049437e+01 0.000000e+00 55s 82244 3.0001616e+00 4.142584e+01 0.000000e+00 60s 84692 3.0001649e+00 1.678961e+01 0.000000e+00 65s 87293 3.0001687e+00 9.110594e+00 0.000000e+00 70s 89741 3.0001720e+00 1.433630e+01 0.000000e+00 75s 92189 3.0001738e+00 1.519158e+00 0.000000e+00 80s 93311 3.0000000e+00 0.000000e+00 0.000000e+00 83s Root relaxation: objective 3.000000e+00, 93311 iterations, 82.66 seconds 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% - 140s Explored 0 nodes (140501 simplex iterations) in 140.70 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%