Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:40:52 2012 Optimize a model with 170 rows, 399 columns and 399 nonzeros Model has 338 quadratic constraints Presolve time: 1.96s Presolved: 170 rows, 399 columns, 399 nonzeros Variable types: 338 continuous, 61 integer (61 binary) Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 90.0000000 - - - 1s 0 0 0.00000 0 32 90.00000 0.00000 100% - 1s 0 0 0.01515 0 55 90.00000 0.01515 100% - 1s 0 2 0.01754 0 55 90.00000 0.01754 100% - 2s * 46 44 25 45.0000000 3.48340 92.3% 40.8 2s * 120 93 25 43.0000000 5.12742 88.1% 35.5 2s * 327 212 24 42.0000000 9.15332 78.2% 32.2 2s 1594 703 41.46959 30 232 42.00000 16.03136 61.8% 35.6 5s * 5912 2235 37 41.0000000 24.64444 39.9% 24.1 9s 6449 2351 39.74419 47 214 41.00000 25.33333 38.2% 23.7 10s H 6740 2329 40.0000000 25.60714 36.0% 23.5 10s H 7734 2267 39.0000000 26.62000 31.7% 22.9 11s 8315 2339 36.08163 31 236 39.00000 27.19713 30.3% 22.6 15s H 8396 2116 38.0000000 27.23529 28.3% 22.5 16s 10320 2130 32.38636 37 223 38.00000 29.00000 23.7% 21.8 20s 14408 1661 32.50980 42 240 38.00000 32.17102 15.3% 20.9 25s Explored 17597 nodes (353405 simplex iterations) in 28.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%