Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:06:59 2012 Optimize a model with 235 rows, 671 columns and 671 nonzeros Model has 468 quadratic constraints Presolve removed 0 rows and 21 columns Presolve time: 2.73s Presolved: 235 rows, 650 columns, 650 nonzeros Variable types: 468 continuous, 182 integer (181 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 0 108.0000000 - - - 2s 0 0 0.00000 0 2 108.00000 0.00000 100% - 2s 0 0 0.00000 0 6 108.00000 0.00000 100% - 2s 0 0 0.00000 0 78 108.00000 0.00000 100% - 2s 0 2 0.00000 0 154 108.00000 0.00000 100% - 2s H 54 54 27.0000000 1.63415 93.9% 41.5 2s H 61 60 26.0000000 1.63415 93.7% 38.6 2s * 61 53 37 25.0000000 1.63415 93.5% 38.7 2s H 98 58 22.0000000 2.06870 90.6% 33.5 3s * 157 76 18 19.0000000 2.48780 86.9% 29.9 3s * 436 136 18 18.0000000 6.00000 66.7% 28.3 3s 706 200 7.74074 28 409 18.00000 7.74074 57.0% 39.8 5s * 1058 200 47 17.0000000 7.74074 54.5% 36.3 5s Explored 2599 nodes (89041 simplex iterations) in 8.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%