Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:19:03 2012 Optimize a model with 241 rows, 692 columns and 692 nonzeros Model has 480 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 2.84s Presolved: 241 rows, 677 columns, 677 nonzeros Variable types: 480 continuous, 197 integer (196 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 0 115.0000000 - - - 2s 0 0 0.00000 0 3 115.00000 0.00000 100% - 2s 0 0 0.00000 0 97 115.00000 0.00000 100% - 2s 0 0 0.00000 0 97 115.00000 0.00000 100% - 2s 0 2 0.00000 0 84 115.00000 0.00000 100% - 2s * 29 27 24 20.0000000 2.26263 88.7% 69.1 3s * 32 26 26 18.0000000 2.26263 87.4% 64.0 3s * 67 48 25 17.0000000 2.26316 86.7% 38.7 3s * 183 125 31 16.0000000 4.40909 72.4% 25.5 3s * 451 218 18 15.0000000 6.50000 56.7% 20.2 3s * 596 215 24 14.0000000 7.09028 49.4% 18.9 3s 810 271 7.32402 26 424 14.00000 7.32402 47.7% 33.6 5s * 1076 242 33 13.0000000 7.32402 43.7% 34.4 5s * 1095 203 35 12.0000000 7.32402 39.0% 34.2 5s Explored 1276 nodes (44623 simplex iterations) in 5.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%