Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:04:32 2013 Optimize a model with 50800 rows, 125150 columns and 400250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 1.24s Presolved: 50750 rows, 125100 columns, 350200 nonzeros Variable types: 75100 continuous, 50000 integer (50000 binary) Root relaxation: objective 1.959342e+05, 4337 iterations, 0.56 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 6 - 195934.242 - - 4s 0 0 196144.192 0 7 - 196144.192 - - 5s 0 0 196148.682 0 7 - 196148.682 - - 6s 0 0 196149.756 0 7 - 196149.756 - - 6s 0 0 196149.920 0 7 - 196149.920 - - 6s 0 0 196150.062 0 8 - 196150.062 - - 7s 0 0 196150.068 0 8 - 196150.068 - - 8s 0 0 196150.099 0 8 - 196150.099 - - 8s 0 0 196150.099 0 8 - 196150.099 - - 10s 0 2 196150.099 0 8 - 196150.099 - - 18s 7 9 197178.391 4 4 - 196375.390 - 305 20s 49 51 196588.154 25 2 - 196382.782 - 131 25s * 56 10 28 196588.54354 196382.782 0.10% 144 25s 105 3 196561.956 48 2 196588.544 196529.460 0.03% 79.4 30s 163 3 196570.211 106 4 196588.544 196529.460 0.03% 52.2 35s H 167 2 196570.65000 196529.460 0.02% 50.9 35s 228 2 196559.686 54 2 196570.650 196529.460 0.02% 38.2 40s 301 2 196562.047 125 2 196570.650 196529.460 0.02% 29.5 45s H 356 1 196567.68278 196529.460 0.02% 25.2 50s 395 3 196564.817 216 2 196567.683 196529.460 0.02% 23.0 55s * 412 7 230 196564.86204 196529.460 0.02% 22.2 59s Cutting planes: Gomory: 2 Implied bound: 66 Flow cover: 2 Explored 415 nodes (15267 simplex iterations) in 59.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965648620441e+05, best bound 1.965640813995e+05, gap 0.0004%