Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:01 2012 Optimize a model with 95 rows, 230 columns and 230 nonzeros Model has 188 quadratic constraints Presolve time: 1.10s Presolved: 95 rows, 230 columns, 230 nonzeros Variable types: 188 continuous, 42 integer (42 binary) Root relaxation: objective 0.000000e+00, 21 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 43.0000000 - - - 1s 0 0 0.00000 0 37 43.00000 0.00000 100% - 1s 0 0 0.48476 0 41 43.00000 0.48476 98.9% - 1s 0 2 0.50000 0 41 43.00000 0.50000 98.8% - 1s * 35 35 20 28.0000000 4.34455 84.5% 24.5 1s H 62 53 27.0000000 4.37171 83.8% 21.2 1s H 81 63 26.0000000 4.37500 83.2% 22.2 1s H 89 71 25.0000000 4.37500 82.5% 21.1 1s H 199 100 24.0000000 8.98259 62.6% 20.3 1s H 327 135 23.0000000 10.45009 54.6% 17.7 1s * 381 131 12 22.0000000 11.12500 49.4% 17.6 1s * 873 181 22 21.0000000 15.00000 28.6% 21.6 1s Explored 1622 nodes (34519 simplex iterations) in 2.25 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%