Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:35:58 2012 Optimize a model with 1 rows, 29 columns and 29 nonzeros Model has 201 quadratic objective terms Modified 29 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 29 columns, 29 nonzeros Presolved model has 230 quadratic objective terms Variable types: 0 continuous, 29 integer (29 binary) Found heuristic solution: objective 101.0000000 Root relaxation: objective 0.000000e+00, 31 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 29 101.00000 0.00000 100% - 0s H 0 0 99.0000000 0.00000 100% - 0s H 0 0 94.0000000 0.00000 100% - 0s H 0 0 83.0000000 0.00000 100% - 0s 0 2 3.11144 0 29 83.00000 3.11144 96.3% - 0s H 247 201 82.0000000 11.90520 85.5% 2.0 0s H 928 542 81.0000000 19.67363 75.7% 2.1 0s H 1594 696 78.0000000 26.50660 66.0% 2.1 0s H13964 6654 77.0000000 43.62178 43.3% 2.0 0s 77209 27080 62.09220 26 14 77.00000 54.97705 28.6% 2.0 5s 149339 42155 59.12247 25 15 77.00000 59.12247 23.2% 2.0 10s 218707 51791 71.58939 28 12 77.00000 61.64316 19.9% 2.0 15s 286464 57183 74.71479 30 10 77.00000 63.56657 17.4% 2.0 20s 352985 58598 72.39320 28 12 77.00000 65.07967 15.5% 2.0 25s 422302 55936 66.49657 27 13 77.00000 66.49657 13.6% 2.0 30s 486668 49716 70.33179 28 12 77.00000 67.83733 11.9% 2.0 35s 552512 38956 73.24921 32 8 77.00000 69.39569 9.88% 2.0 40s 616326 22355 71.54215 31 9 77.00000 71.54215 7.09% 2.0 45s Explored 660605 nodes (1330888 simplex iterations) in 48.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.700000000000e+01, best bound 7.700000000000e+01, gap 0.0%