Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:06:31 2012 Optimize a model with 183 rows, 421 columns and 421 nonzeros Model has 364 quadratic constraints Presolve time: 2.12s Presolved: 183 rows, 421 columns, 421 nonzeros Variable types: 364 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 89.0000000 - - - 2s 0 0 0.00000 0 25 89.00000 0.00000 100% - 2s 0 0 0.00000 0 43 89.00000 0.00000 100% - 2s 0 0 0.00000 0 37 89.00000 0.00000 100% - 2s 0 2 0.00000 0 37 89.00000 0.00000 100% - 2s H 54 54 61.0000000 7.05062 88.4% 37.4 2s H 108 84 55.0000000 7.09040 87.1% 31.1 2s * 114 84 24 54.0000000 7.09040 86.9% 30.4 2s H 148 112 52.0000000 9.79040 81.2% 32.6 2s H 287 204 50.0000000 11.98372 76.0% 37.0 2s * 289 195 18 49.0000000 11.98372 75.5% 37.0 2s 1233 558 48.44444 38 259 49.00000 18.42857 62.4% 41.4 5s 5863 2490 cutoff 45 49.00000 31.25714 36.2% 23.6 10s 10934 4177 42.30233 39 259 49.00000 34.81818 28.9% 20.4 15s *12381 4342 46 48.0000000 35.42857 26.2% 20.0 16s H14433 4332 47.0000000 36.31250 22.7% 19.6 19s 14514 4341 42.79487 44 222 47.00000 36.34783 22.7% 19.6 20s 14960 4401 42.95556 44 230 47.00000 36.50000 22.3% 19.5 25s 16582 4461 42.32558 37 242 47.00000 37.14286 21.0% 19.2 30s 21230 4404 45.50000 37 232 47.00000 39.07895 16.9% 18.7 35s 25626 3716 41.00000 41 256 47.00000 41.00000 12.8% 18.5 40s 27542 3182 43.71429 41 242 47.00000 41.76471 11.1% 18.4 45s Explored 32948 nodes (588537 simplex iterations) in 50.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.700000000005e+01, best bound 4.700000000005e+01, gap 0.0%