Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:43:06 2012 Optimize a model with 288 rows, 817 columns and 817 nonzeros Model has 574 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 3.33s Presolved: 288 rows, 799 columns, 799 nonzeros Variable types: 574 continuous, 225 integer (224 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 142.0000000 - - - 3s 0 0 0.00000 0 49 142.00000 0.00000 100% - 3s 0 0 0.00000 0 6 142.00000 0.00000 100% - 3s 0 0 0.00000 0 132 142.00000 0.00000 100% - 3s 0 2 0.00000 0 132 142.00000 0.00000 100% - 3s H 52 52 32.0000000 2.90240 90.9% 33.6 3s H 54 54 30.0000000 2.90240 90.3% 33.6 3s * 58 55 42 29.0000000 2.90240 90.0% 32.3 3s H 160 130 28.0000000 3.63636 87.0% 23.9 3s * 169 124 33 27.0000000 3.63636 86.5% 24.4 3s * 213 146 32 26.0000000 3.87347 85.1% 26.5 3s H 216 145 25.0000000 3.87347 84.5% 26.6 3s * 216 140 35 24.0000000 3.87347 83.9% 26.6 3s 601 314 17.56410 12 132 24.00000 8.43730 64.8% 24.3 5s * 778 381 48 22.0000000 8.43730 61.6% 38.8 7s * 1188 395 44 21.0000000 8.84375 57.9% 39.2 9s 1531 387 17.81768 37 472 21.00000 10.62162 49.4% 38.2 10s 2831 544 18.00000 39 448 21.00000 13.17568 37.3% 34.6 15s 3672 606 18.72727 38 489 21.00000 14.20548 32.4% 34.6 20s 4638 616 19.78283 44 480 21.00000 15.05769 28.3% 35.5 25s * 5066 538 49 20.0000000 15.44118 22.8% 34.6 26s 5990 314 17.81879 38 473 20.00000 16.83750 15.8% 34.5 30s Explored 6504 nodes (227782 simplex iterations) in 31.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%