Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:26:05 2012 Optimize a model with 269 rows, 752 columns and 752 nonzeros Model has 536 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 3.13s Presolved: 269 rows, 734 columns, 734 nonzeros Variable types: 536 continuous, 198 integer (197 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 0 133.0000000 - - - 3s 0 0 0.00000 0 63 133.00000 0.00000 100% - 3s 0 0 0.00000 0 68 133.00000 0.00000 100% - 3s 0 0 0.00000 0 4 133.00000 0.00000 100% - 3s 0 2 0.00000 0 163 133.00000 0.00000 100% - 3s H 37 37 27.0000000 2.68156 90.1% 45.9 3s * 46 44 27 26.0000000 2.68156 89.7% 43.6 3s H 327 211 25.0000000 6.89068 72.4% 30.0 3s * 553 288 24 24.0000000 9.51429 60.4% 29.2 4s 706 335 10.05825 12 446 24.00000 10.05825 58.1% 32.2 5s 2454 776 17.50000 31 440 24.00000 13.50000 43.8% 34.2 10s * 3224 954 45 23.0000000 14.33333 37.7% 32.8 11s 4756 1143 22.00000 35 408 23.00000 16.00000 30.4% 32.8 15s 5512 1203 21.36646 37 415 23.00000 16.50000 28.3% 32.4 20s 6089 1231 18.00000 32 427 23.00000 17.00000 26.1% 31.7 25s 7520 1222 cutoff 36 23.00000 17.58904 23.5% 32.0 30s 8874 1157 20.03822 35 397 23.00000 18.16667 21.0% 32.1 35s 10584 962 20.13873 39 432 23.00000 18.95745 17.6% 31.2 40s 12702 543 cutoff 35 23.00000 20.00000 13.0% 31.1 45s Explored 13898 nodes (427916 simplex iterations) in 47.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%