Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:29 2012 Optimize a model with 902 rows, 840 columns and 3660 nonzeros Presolve removed 118 rows and 40 columns Presolve time: 0.02s Presolved: 784 rows, 800 columns, 3443 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 2.072341e+02, 780 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 207.23412 0 40 - 207.23412 - - 0s 0 0 226.53641 0 47 - 226.53641 - - 0s 0 0 244.94047 0 47 - 244.94047 - - 0s 0 0 251.99208 0 45 - 251.99208 - - 0s 0 0 255.81630 0 45 - 255.81630 - - 0s 0 0 256.04826 0 47 - 256.04826 - - 0s 0 0 256.59663 0 44 - 256.59663 - - 0s 0 0 256.61168 0 44 - 256.61168 - - 0s 0 0 256.61747 0 45 - 256.61747 - - 0s 0 2 256.64288 0 45 - 256.64288 - - 0s * 862 321 43 378.0000000 286.40262 24.2% 51.7 3s H 1000 309 368.0000000 286.40262 22.2% 49.8 3s H 1108 290 357.0000000 286.40262 19.8% 49.2 3s H 1135 263 354.0000000 287.12070 18.9% 49.1 3s H 1274 241 352.0000000 290.69474 17.4% 47.4 3s H 1385 233 344.0000000 292.17037 15.1% 46.5 4s H 1412 188 332.0000000 292.89868 11.8% 46.1 4s 1519 210 294.90152 24 48 332.00000 294.90152 11.2% 45.7 5s H 1546 200 331.0000000 294.90152 10.9% 46.3 5s H 1573 180 329.0000000 294.90152 10.4% 46.5 5s Cutting planes: Gomory: 8 Cover: 7 Flow cover: 13 GUB cover: 9 Explored 2088 nodes (88852 simplex iterations) in 6.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.290000000000e+02, best bound 3.290000000000e+02, gap 0.0%