Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:05:11 2012 Optimize a model with 159 rows, 342 columns and 342 nonzeros Model has 316 quadratic constraints Presolve time: 1.84s Presolved: 159 rows, 342 columns, 342 nonzeros Variable types: 316 continuous, 26 integer (26 binary) Root relaxation: objective 0.000000e+00, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 75.0000000 - - - 1s 0 0 0.00000 0 20 75.00000 0.00000 100% - 1s 0 0 0.24561 0 26 75.00000 0.24561 100% - 1s 0 2 0.40000 0 26 75.00000 0.40000 99.5% - 1s * 66 52 18 66.0000000 7.90909 88.0% 32.2 1s * 92 65 16 62.0000000 13.00000 79.0% 32.0 1s 2693 730 cutoff 32 62.00000 39.20000 36.8% 26.8 5s * 5156 1055 32 61.0000000 46.24390 24.2% 23.2 6s 7541 606 59.33333 29 178 61.00000 54.00000 11.5% 22.2 10s Explored 8425 nodes (179561 simplex iterations) in 11.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.100000000000e+01, best bound 6.100000000000e+01, gap 0.0%