Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:37:25 2012 Optimize a model with 263 rows, 754 columns and 754 nonzeros Model has 524 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 3.06s Presolved: 263 rows, 739 columns, 739 nonzeros Variable types: 524 continuous, 215 integer (214 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 135.0000000 - - - 3s 0 0 0.00000 0 3 135.00000 0.00000 100% - 3s 0 0 0.00000 0 3 135.00000 0.00000 100% - 3s 0 0 0.00000 0 2 135.00000 0.00000 100% - 3s 0 2 0.00000 0 129 135.00000 0.00000 100% - 3s H 54 54 25.0000000 1.05556 95.8% 40.1 3s * 66 56 43 21.0000000 1.05556 95.0% 34.2 3s H 128 77 19.0000000 3.54190 81.4% 26.2 3s * 160 87 19 18.0000000 3.79605 78.9% 26.7 3s * 265 103 29 16.0000000 5.23333 67.3% 26.5 3s * 673 100 14 15.0000000 9.18584 38.8% 24.5 3s 807 130 9.66072 16 693 15.00000 9.66072 35.6% 26.3 5s * 1094 139 33 14.0000000 9.66072 31.0% 38.1 6s * 1967 58 30 13.0000000 11.73077 9.76% 46.9 9s Explored 2048 nodes (94820 simplex iterations) in 9.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%