Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:55:17 2012 Optimize a model with 227 rows, 483 columns and 483 nonzeros Model has 452 quadratic constraints Presolve time: 2.64s Presolved: 227 rows, 483 columns, 483 nonzeros Variable types: 452 continuous, 31 integer (31 binary) Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 114.0000000 - - - 2s 0 0 0.00000 0 24 114.00000 0.00000 100% - 2s 0 0 0.60369 0 31 114.00000 0.60369 99.5% - 2s 0 2 0.71429 0 31 114.00000 0.71429 99.4% - 2s * 45 45 25 104.0000000 6.40000 93.8% 44.1 2s * 88 76 25 99.0000000 6.72238 93.2% 44.9 2s H 185 148 94.0000000 12.28571 86.9% 48.8 2s * 346 250 20 93.0000000 18.43698 80.2% 51.5 3s * 542 346 19 92.0000000 29.00000 68.5% 51.2 3s 740 426 cutoff 29 92.00000 32.69763 64.5% 52.0 5s * 931 481 42 90.0000000 32.69763 63.7% 57.3 5s * 934 454 43 89.0000000 32.69763 63.3% 57.1 5s H 3036 1147 88.0000000 37.50000 57.4% 40.0 10s H 3398 1242 87.0000000 39.66667 54.4% 38.8 13s 4034 1432 69.35691 46 269 87.00000 42.55556 51.1% 37.3 15s 7202 2265 74.50000 45 250 87.00000 51.85084 40.4% 33.1 20s 9858 2784 cutoff 37 87.00000 56.66667 34.9% 31.5 25s 13457 3287 80.27769 44 268 87.00000 60.91304 30.0% 30.3 30s 16946 3557 85.89471 39 251 87.00000 64.40000 26.0% 29.5 35s 20054 3686 cutoff 50 87.00000 66.69718 23.3% 28.9 40s 23818 3701 80.93288 49 246 87.00000 69.00000 20.7% 28.4 45s 27698 3565 cutoff 44 87.00000 71.28571 18.1% 27.8 50s 31711 3227 cutoff 42 87.00000 73.35740 15.7% 27.3 55s 35601 2622 82.43365 34 305 87.00000 75.41801 13.3% 27.0 60s 39742 1591 83.00000 46 251 87.00000 78.10526 10.2% 26.6 65s Explored 42658 nodes (1116540 simplex iterations) in 67.82 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.700000000057e+01, best bound 8.700000000057e+01, gap 0.0%