Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:24:18 2012 Optimize a model with 902 rows, 840 columns and 3600 nonzeros Presolve removed 175 rows and 40 columns Presolve time: 0.02s Presolved: 727 rows, 800 columns, 3327 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 2.010663e+02, 906 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 201.06632 0 46 - 201.06632 - - 0s 0 0 210.63675 0 48 - 210.63675 - - 0s 0 0 214.43220 0 47 - 214.43220 - - 0s 0 0 223.04899 0 46 - 223.04899 - - 0s 0 0 223.99981 0 48 - 223.99981 - - 0s 0 0 224.70876 0 49 - 224.70876 - - 0s 0 0 225.66386 0 49 - 225.66386 - - 0s 0 0 226.99820 0 42 - 226.99820 - - 0s 0 0 227.19875 0 40 - 227.19875 - - 0s 0 0 227.21567 0 43 - 227.21567 - - 0s 0 0 227.24869 0 44 - 227.24869 - - 0s 0 0 227.24869 0 44 - 227.24869 - - 0s 0 2 228.08924 0 44 - 228.08924 - - 0s 1390 635 281.06715 36 29 - 261.68753 - 56.6 5s * 1496 660 60 415.0000000 261.76406 36.9% 55.2 5s * 1580 416 34 314.0000000 262.32258 16.5% 54.6 5s H 1932 453 301.0000000 263.42701 12.5% 53.7 7s 3287 586 274.26190 44 40 301.00000 271.37941 9.84% 46.3 10s H 6053 763 300.0000000 283.49736 5.50% 39.8 14s 6887 557 288.07571 40 35 300.00000 287.19961 4.27% 38.4 15s Cutting planes: Gomory: 9 Cover: 12 Implied bound: 45 Flow cover: 74 GUB cover: 6 Zero half: 9 Explored 7855 nodes (291441 simplex iterations) in 16.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+02, best bound 3.000000000000e+02, gap 0.0%