Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:28:52 2012 Optimize a model with 282 rows, 799 columns and 799 nonzeros Model has 562 quadratic constraints Presolve removed 0 rows and 20 columns Presolve time: 3.28s Presolved: 282 rows, 779 columns, 779 nonzeros Variable types: 562 continuous, 217 integer (216 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 0 139.0000000 - - - 3s 0 0 0.00000 0 5 139.00000 0.00000 100% - 3s 0 0 0.00000 0 2 139.00000 0.00000 100% - 3s 0 0 0.00000 0 2 139.00000 0.00000 100% - 3s 0 2 0.00000 0 2 139.00000 0.00000 100% - 3s * 46 45 32 27.0000000 0.49612 98.2% 49.8 3s 606 443 5.65714 11 468 27.00000 5.65714 79.0% 27.6 5s * 1064 542 65 25.0000000 6.83158 72.7% 36.0 7s H 1077 513 24.0000000 7.55214 68.5% 35.9 7s * 1264 510 36 23.0000000 8.91589 61.2% 34.7 7s H 1282 450 21.0000000 9.11392 56.6% 34.7 7s 2264 471 18.50000 29 472 21.00000 12.40336 40.9% 35.1 10s 3224 556 19.89552 31 477 21.00000 14.01734 33.3% 35.6 15s 3741 568 19.33333 31 440 21.00000 14.76020 29.7% 35.4 20s 5101 468 19.94074 30 410 21.00000 16.02941 23.7% 35.2 25s 6506 150 19.50000 29 416 21.00000 18.00000 14.3% 35.0 30s Explored 6794 nodes (241012 simplex iterations) in 31.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%