Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:22:42 2012 Optimize a model with 132 rows, 331 columns and 331 nonzeros Model has 262 quadratic constraints Presolve time: 1.53s Presolved: 132 rows, 331 columns, 331 nonzeros Variable types: 262 continuous, 69 integer (69 binary) Root relaxation: objective 0.000000e+00, 34 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 58.0000000 - - - 1s 0 0 0.00000 0 61 58.00000 0.00000 100% - 1s 0 0 0.43333 0 68 58.00000 0.43333 99.3% - 1s 0 2 0.45349 0 68 58.00000 0.45349 99.2% - 1s * 45 43 28 34.0000000 3.43654 89.9% 20.5 1s * 76 59 24 28.0000000 3.50400 87.5% 21.4 1s H 106 74 27.0000000 5.66667 79.0% 21.1 1s H 408 192 26.0000000 9.55556 63.2% 21.4 1s * 416 151 20 23.0000000 9.55556 58.5% 21.2 1s 2807 563 20.00000 37 199 23.00000 16.17073 29.7% 19.4 5s * 3438 501 43 22.0000000 17.27778 21.5% 18.4 5s Explored 4455 nodes (77737 simplex iterations) in 6.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%