Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:13:26 2012 Optimize a model with 179 rows, 383 columns and 383 nonzeros Model has 356 quadratic constraints Presolve time: 2.06s Presolved: 179 rows, 383 columns, 383 nonzeros Variable types: 356 continuous, 27 integer (27 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 94.0000000 - - - 2s 0 0 0.00000 0 2 94.00000 0.00000 100% - 2s 0 0 0.00000 0 27 94.00000 0.00000 100% - 2s 0 0 0.00000 0 26 94.00000 0.00000 100% - 2s 0 2 0.00000 0 26 94.00000 0.00000 100% - 2s * 40 40 23 86.0000000 7.00000 91.9% 40.7 2s H 54 45 84.0000000 7.00000 91.7% 43.6 2s * 67 55 17 73.0000000 7.00000 90.4% 42.6 2s * 103 73 18 72.0000000 13.00000 81.9% 38.8 2s H 162 108 69.0000000 14.00000 79.7% 40.9 2s 1569 512 67.50000 36 214 69.00000 30.44119 55.9% 40.5 5s 6875 1605 67.20000 40 195 69.00000 49.00000 29.0% 26.6 10s * 8934 1631 40 68.0000000 52.00000 23.5% 25.8 11s 11153 1415 65.28571 37 179 68.00000 55.00000 19.1% 25.4 15s 13957 932 64.43750 45 201 68.00000 58.80000 13.5% 24.7 20s Explored 15877 nodes (381874 simplex iterations) in 21.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.800000000000e+01, best bound 6.800000000000e+01, gap 0.0%