Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:28:46 2012 Optimize a model with 270 rows, 755 columns and 755 nonzeros Model has 538 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 3.14s Presolved: 270 rows, 737 columns, 737 nonzeros Variable types: 538 continuous, 199 integer (198 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 0 136.0000000 - - - 3s 0 0 0.00000 0 69 136.00000 0.00000 100% - 3s 0 0 0.00000 0 168 136.00000 0.00000 100% - 3s 0 0 0.00000 0 162 136.00000 0.00000 100% - 3s 0 2 0.00000 0 162 136.00000 0.00000 100% - 3s H 54 54 33.0000000 2.18390 93.4% 39.1 3s * 64 64 35 28.0000000 2.18390 92.2% 41.2 3s H 156 116 27.0000000 4.75719 82.4% 32.3 3s H 184 110 25.0000000 5.52857 77.9% 35.1 3s H 356 147 23.0000000 7.64706 66.8% 29.0 3s 606 224 10.21469 12 444 23.00000 10.21469 55.6% 31.3 5s 2603 782 22.35838 40 436 23.00000 12.25641 46.7% 32.6 10s 5170 1572 22.17699 38 377 23.00000 14.44355 37.2% 28.9 15s 7748 2179 cutoff 37 23.00000 15.52586 32.5% 27.9 20s 10470 2660 cutoff 36 23.00000 16.34783 28.9% 26.8 25s 13248 3044 20.47761 35 417 23.00000 17.00000 26.1% 26.1 30s *13508 2613 47 22.0000000 17.00000 22.7% 26.3 30s 14021 2582 19.63584 38 437 22.00000 17.11111 22.2% 26.6 35s 14190 2567 19.50000 35 422 22.00000 17.19277 21.9% 26.6 40s H14248 1866 21.0000000 17.21429 18.0% 26.5 41s 14553 1789 19.48697 33 413 21.00000 17.42424 17.0% 26.4 45s 15837 1421 19.00000 34 456 21.00000 18.00000 14.3% 26.9 50s Explored 17989 nodes (484449 simplex iterations) in 53.61 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%