Optimize a model with 195 rows, 18915 columns and 37830 nonzeros Presolve time: 0.05s Presolved: 195 rows, 18915 columns, 37830 nonzeros Variable types: 0 continuous, 18915 integer (18915 binary) Root relaxation: objective 2.272500e+03, 290 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2272.50000 0 6 - 2272.50000 - - 0s 0 0 2274.00000 0 6 - 2274.00000 - - 0s 0 0 2275.50000 0 12 - 2275.50000 - - 0s 0 0 2277.50000 0 6 - 2277.50000 - - 0s 0 0 2278.00000 0 10 - 2278.00000 - - 0s 0 0 2279.50000 0 15 - 2279.50000 - - 0s 0 0 2279.50000 0 8 - 2279.50000 - - 0s 0 0 2279.75000 0 18 - 2279.75000 - - 0s 0 0 2280.28571 0 21 - 2280.28571 - - 0s 0 0 2280.56250 0 20 - 2280.56250 - - 0s 0 0 2281.16667 0 21 - 2281.16667 - - 0s 0 0 2281.80000 0 20 - 2281.80000 - - 0s 0 0 2282.04762 0 26 - 2282.04762 - - 0s 0 0 2282.75000 0 23 - 2282.75000 - - 0s 0 0 2283.26667 0 43 - 2283.26667 - - 0s 0 0 2283.61111 0 52 - 2283.61111 - - 0s 0 0 2284.27619 0 48 - 2284.27619 - - 0s 0 0 2284.97024 0 49 - 2284.97024 - - 0s 0 0 2286.33333 0 36 - 2286.33333 - - 0s 0 0 2286.69231 0 59 - 2286.69231 - - 0s 0 0 2287.14706 0 38 - 2287.14706 - - 0s 0 0 2287.31250 0 48 - 2287.31250 - - 0s 0 0 2287.31250 0 48 - 2287.31250 - - 0s 0 2 2287.31250 0 48 - 2287.31250 - - 1s * 209 208 174 2428.0000000 2289.16667 5.72% 5.2 3s * 410 356 163 2417.0000000 2289.30000 5.28% 5.5 4s 453 394 2339.50000 32 22 2417.00000 2289.66667 5.27% 6.1 5s * 456 199 34 2341.0000000 2289.66667 2.19% 6.1 5s H 611 306 2333.0000000 2313.59941 0.83% 7.5 9s 617 310 2316.00000 33 174 2333.00000 2313.82240 0.82% 7.4 10s H 651 313 2329.0000000 2315.38067 0.58% 9.6 12s H 806 357 2323.0000000 2316.10861 0.30% 13.3 13s 818 367 2317.83688 27 150 2323.00000 2316.51060 0.28% 14.0 15s Cutting planes: Gomory: 28 Clique: 1 Zero half: 68 Explored 1156 nodes (23056 simplex iterations) in 16.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.323000000000e+03, best bound 2.323000000000e+03, gap 0.0% Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:50:51 2012