Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:12:53 2012 Optimize a model with 173 rows, 402 columns and 402 nonzeros Model has 344 quadratic constraints Presolve time: 2.01s Presolved: 173 rows, 402 columns, 402 nonzeros Variable types: 344 continuous, 58 integer (58 binary) Root relaxation: objective 0.000000e+00, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 98.0000000 - - - 2s 0 0 0.00000 0 34 98.00000 0.00000 100% - 2s 0 0 0.11538 0 52 98.00000 0.11538 100% - 2s 0 2 0.13750 0 52 98.00000 0.13750 100% - 2s H 27 27 88.0000000 4.83333 94.5% 50.9 2s H 51 51 48.0000000 4.83333 89.9% 39.5 2s * 54 52 30 47.0000000 4.83333 89.7% 37.9 2s * 84 71 19 45.0000000 5.14159 88.6% 40.4 2s * 91 69 22 44.0000000 5.14159 88.3% 38.3 2s 1658 689 38.37143 36 237 44.00000 15.00000 65.9% 36.3 5s 6704 2921 33.50000 37 219 44.00000 25.06250 43.0% 22.5 10s 11933 4665 36.81818 38 226 44.00000 28.05433 36.2% 20.2 15s *14948 5316 57 43.0000000 29.07143 32.4% 19.5 17s H15059 5069 42.0000000 29.13043 30.6% 19.5 18s 15254 5108 40.09302 38 236 42.00000 29.25000 30.4% 19.5 20s 15922 5213 31.78261 34 233 42.00000 29.50000 29.8% 19.4 25s 20410 5669 38.00000 43 226 42.00000 31.00000 26.2% 18.9 30s 25078 5962 39.97674 42 236 42.00000 32.12284 23.5% 18.5 35s 29882 6067 36.04000 46 234 42.00000 33.25000 20.8% 18.2 40s 31600 6052 cutoff 40 42.00000 33.66667 19.8% 18.0 47s 34482 5911 39.66667 37 220 42.00000 34.23045 18.5% 17.9 50s 39932 5478 38.66667 43 215 42.00000 35.20000 16.2% 17.6 55s 45385 4561 38.04793 44 230 42.00000 36.33333 13.5% 17.4 60s 49759 3075 cutoff 43 42.00000 37.57895 10.5% 17.3 65s Explored 54460 nodes (927171 simplex iterations) in 68.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000005e+01, best bound 4.200000000005e+01, gap 0.0%