Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:56:25 2012 Optimize a model with 122 rows, 265 columns and 265 nonzeros Model has 242 quadratic constraints Presolve time: 1.41s Presolved: 122 rows, 265 columns, 265 nonzeros Variable types: 242 continuous, 23 integer (23 binary) Root relaxation: objective 0.000000e+00, 11 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 71.0000000 - - - 1s 0 0 0.00000 0 22 71.00000 0.00000 100% - 1s 0 0 0.47431 0 23 71.00000 0.47431 99.3% - 1s 0 2 0.51623 0 23 71.00000 0.51623 99.3% - 1s * 32 32 19 55.0000000 2.48052 95.5% 23.3 1s * 67 56 18 52.0000000 2.72222 94.8% 22.0 1s H 93 66 51.0000000 6.72159 86.8% 22.1 1s * 226 147 13 50.0000000 10.47594 79.0% 25.0 1s * 297 161 14 45.0000000 15.40909 65.8% 25.1 1s * 1573 217 40 44.0000000 27.33333 37.9% 26.9 3s Explored 2771 nodes (64813 simplex iterations) in 3.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%