Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:08:19 2012 Optimize a model with 185 rows, 425 columns and 425 nonzeros Model has 368 quadratic constraints Presolve time: 2.14s Presolved: 185 rows, 425 columns, 425 nonzeros Variable types: 368 continuous, 57 integer (57 binary) Root relaxation: objective 0.000000e+00, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 104.0000000 - - - 2s 0 0 0.00000 0 39 104.00000 0.00000 100% - 2s 0 0 0.30857 0 57 104.00000 0.30857 100% - 2s 0 2 0.32353 0 57 104.00000 0.32353 100% - 2s H 47 47 54.0000000 3.62500 93.3% 36.1 2s * 48 48 27 52.0000000 3.62500 93.0% 36.4 2s H 169 144 51.0000000 6.96618 86.3% 41.5 2s * 339 217 21 50.0000000 10.07967 79.8% 38.7 2s 1180 572 49.88889 40 232 50.00000 16.90909 66.2% 42.7 5s * 2334 905 54 48.0000000 22.20000 53.8% 31.8 6s 4438 1532 46.22222 47 167 48.00000 27.08939 43.6% 26.9 10s 6475 1986 cutoff 47 48.00000 30.33333 36.8% 24.9 15s 9407 2546 40.17391 40 238 48.00000 33.00000 31.2% 23.3 20s 13219 3029 cutoff 52 48.00000 35.16667 26.7% 22.2 25s 17692 3323 39.13920 46 238 48.00000 37.01116 22.9% 21.3 30s 22313 3370 39.86667 35 252 48.00000 38.59595 19.6% 20.7 35s 27054 3182 cutoff 45 48.00000 39.95751 16.8% 20.1 40s 32160 2696 44.50000 41 228 48.00000 41.33447 13.9% 19.6 46s 35702 2070 46.30630 49 195 48.00000 42.44444 11.6% 19.2 50s 39655 423 46.51724 45 196 48.00000 45.01326 6.22% 19.0 55s Explored 40252 nodes (758399 simplex iterations) in 55.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.800000000005e+01, best bound 4.800000000000e+01, gap 0.0%