Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:11:33 2013 Optimize a model with 1400 rows, 38250 columns and 150750 nonzeros Presolve removed 50 rows and 2850 columns Presolve time: 0.24s Presolved: 1350 rows, 35400 columns, 140750 nonzeros Variable types: 35050 continuous, 350 integer (350 binary) Root relaxation: objective 2.198499e+05, 2593 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 219849.939 0 8 - 219849.939 - - 0s 0 0 219858.267 0 8 - 219858.267 - - 0s 0 0 219858.537 0 8 - 219858.537 - - 0s 0 0 219858.546 0 8 - 219858.546 - - 0s 0 0 219858.909 0 8 - 219858.909 - - 0s 0 0 219859.600 0 8 - 219859.600 - - 1s 0 0 219860.054 0 8 - 219860.054 - - 1s 0 0 219860.472 0 8 - 219860.472 - - 1s 0 0 219860.521 0 8 - 219860.521 - - 1s 0 0 219860.521 0 8 - 219860.521 - - 1s 0 2 219862.636 0 8 - 219862.636 - - 3s 38 40 221018.454 38 3 - 220220.935 - 30.2 5s * 99 99 94 224690.92069 220220.935 1.99% 20.9 6s * 163 137 54 223291.54392 220229.154 1.37% 19.4 7s * 201 151 42 222644.42794 220235.957 1.08% 20.8 7s * 230 129 29 222101.60391 220251.495 0.83% 22.1 8s * 269 143 21 222062.21251 220296.501 0.80% 25.7 9s 345 158 222033.429 22 4 222062.213 220529.150 0.69% 25.3 10s * 429 156 19 221990.67135 220665.447 0.60% 27.6 11s 650 130 221939.067 50 2 221990.671 221268.736 0.33% 34.1 15s * 839 14 22 221988.53157 221937.521 0.02% 31.5 17s Cutting planes: Flow cover: 10 Explored 852 nodes (29907 simplex iterations) in 17.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.219885315694e+05, best bound 2.219697559983e+05, gap 0.0085%