Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:23 2012 Optimize a model with 76 rows, 169 columns and 169 nonzeros Model has 150 quadratic constraints Presolve time: 0.87s Presolved: 76 rows, 169 columns, 169 nonzeros Variable types: 150 continuous, 19 integer (19 binary) Root relaxation: objective 0.000000e+00, 9 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 41.0000000 - - - 0s 0 0 0.00000 0 18 41.00000 0.00000 100% - 0s 0 0 0.33126 0 19 41.00000 0.33126 99.2% - 0s 0 2 0.55752 0 19 41.00000 0.55752 98.6% - 0s * 20 20 13 33.0000000 3.52525 89.3% 23.3 0s * 21 19 14 31.0000000 3.52525 88.6% 22.5 0s * 42 26 9 29.0000000 3.59259 87.6% 21.2 0s H 56 32 28.0000000 8.30000 70.4% 23.0 0s * 72 39 12 27.0000000 8.33333 69.1% 22.3 0s * 83 39 9 26.0000000 9.18750 64.7% 22.1 0s * 97 42 9 25.0000000 9.20635 63.2% 22.0 0s * 216 13 8 24.0000000 21.50000 10.4% 19.7 0s Cutting planes: Gomory: 1 Explored 230 nodes (4517 simplex iterations) in 0.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%