Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:24:05 2012 Optimize a model with 902 rows, 840 columns and 3580 nonzeros Presolve removed 194 rows and 40 columns Presolve time: 0.03s Presolved: 708 rows, 800 columns, 3287 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 2.201616e+02, 817 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220.16156 0 41 - 220.16156 - - 0s 0 0 241.29071 0 41 - 241.29071 - - 0s 0 0 250.61698 0 48 - 250.61698 - - 0s 0 0 252.44494 0 49 - 252.44494 - - 0s 0 0 254.04342 0 50 - 254.04342 - - 0s 0 0 258.77954 0 39 - 258.77954 - - 0s 0 0 259.22772 0 47 - 259.22772 - - 0s 0 0 259.35390 0 41 - 259.35390 - - 0s 0 0 259.41823 0 46 - 259.41823 - - 0s 0 0 259.58781 0 43 - 259.58781 - - 0s 0 0 259.71564 0 46 - 259.71564 - - 0s 0 2 259.80307 0 46 - 259.80307 - - 0s * 680 421 46 313.0000000 269.43833 13.9% 42.0 2s H 1033 437 311.0000000 273.24396 12.1% 46.3 4s 1158 477 279.42164 34 38 311.00000 276.57792 11.1% 43.7 5s * 3442 982 34 308.0000000 287.00294 6.82% 32.3 7s H 3747 839 303.0000000 287.92862 4.97% 32.0 8s 5295 417 296.06568 42 16 303.00000 296.06568 2.29% 29.4 10s Cutting planes: Gomory: 26 Cover: 10 Implied bound: 50 Flow cover: 76 GUB cover: 5 Zero half: 3 Explored 5799 nodes (163658 simplex iterations) in 10.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.030000000000e+02, best bound 3.030000000000e+02, gap 0.0%