Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:31:19 2012 Optimize a model with 245 rows, 705 columns and 705 nonzeros Model has 488 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 2.85s Presolved: 245 rows, 690 columns, 690 nonzeros Variable types: 488 continuous, 202 integer (201 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 0 118.0000000 - - - 2s 0 0 0.00000 0 43 118.00000 0.00000 100% - 2s 0 0 0.00000 0 2 118.00000 0.00000 100% - 2s 0 0 0.00000 0 141 118.00000 0.00000 100% - 2s 0 2 0.00000 0 134 118.00000 0.00000 100% - 3s H 36 36 19.0000000 2.54839 86.6% 43.0 3s * 40 35 26 18.0000000 2.54839 85.8% 41.9 3s H 409 182 17.0000000 7.40113 56.5% 22.5 3s * 423 181 35 16.0000000 7.40113 53.7% 22.7 3s 716 284 9.87425 17 597 16.00000 7.85345 50.9% 34.3 5s * 2240 247 32 15.0000000 11.38095 24.1% 50.6 9s 2352 228 cutoff 25 15.00000 11.66667 22.2% 50.2 10s Explored 3024 nodes (153821 simplex iterations) in 11.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%