Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:27:29 2012 Optimize a model with 902 rows, 840 columns and 3520 nonzeros Presolve removed 251 rows and 40 columns Presolve time: 0.02s Presolved: 651 rows, 800 columns, 3176 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 1.355171e+02, 652 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 135.51709 0 36 - 135.51709 - - 0s 0 0 141.84958 0 50 - 141.84958 - - 0s 0 0 143.39336 0 55 - 143.39336 - - 0s 0 0 149.45770 0 57 - 149.45770 - - 0s 0 0 151.17672 0 53 - 151.17672 - - 0s 0 0 152.16756 0 43 - 152.16756 - - 0s 0 0 153.44209 0 52 - 153.44209 - - 0s 0 0 153.80518 0 45 - 153.80518 - - 0s 0 0 154.01550 0 51 - 154.01550 - - 0s 0 0 154.01550 0 47 - 154.01550 - - 0s 0 2 154.03142 0 47 - 154.03142 - - 0s H 617 449 290.0000000 173.45418 40.2% 35.0 2s H 673 450 289.0000000 173.45418 40.0% 42.9 2s H 700 433 287.0000000 173.45418 39.6% 44.7 3s H 783 424 282.0000000 173.45418 38.5% 46.5 3s H 1000 438 276.0000000 178.85886 35.2% 49.7 4s H 1028 409 271.0000000 181.96457 32.9% 50.5 4s * 1050 341 31 255.0000000 182.86184 28.3% 50.3 4s * 1053 314 31 252.0000000 182.86184 27.4% 50.2 4s H 1400 280 242.0000000 193.73296 19.9% 49.6 5s H 3826 473 241.0000000 220.96630 8.31% 45.2 9s 4318 419 237.70693 23 16 241.00000 226.20490 6.14% 43.4 10s Cutting planes: Gomory: 10 Cover: 9 Implied bound: 9 Flow cover: 21 GUB cover: 6 Explored 5265 nodes (203694 simplex iterations) in 10.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.410000000000e+02, best bound 2.410000000000e+02, gap 0.0%