Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:04:58 2012 Optimize a model with 167 rows, 358 columns and 358 nonzeros Model has 332 quadratic constraints Presolve time: 1.93s Presolved: 167 rows, 358 columns, 358 nonzeros Variable types: 332 continuous, 26 integer (26 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 89.0000000 - - - 1s 0 0 0.00000 0 24 89.00000 0.00000 100% - 1s 0 0 0.45833 0 26 89.00000 0.45833 99.5% - 1s 0 0 0.45833 0 26 89.00000 0.45833 99.5% - 1s 0 2 0.45833 0 26 89.00000 0.45833 99.5% - 1s * 33 33 18 70.0000000 7.86111 88.8% 48.9 2s H 68 60 69.0000000 7.87500 88.6% 39.4 2s * 96 78 16 66.0000000 11.66176 82.3% 41.5 2s * 193 143 20 65.0000000 19.64286 69.8% 39.0 2s 2276 682 54.57895 42 206 65.00000 34.20000 47.4% 31.9 5s 8375 1236 63.33333 40 182 65.00000 52.09091 19.9% 23.6 10s Explored 12373 nodes (269370 simplex iterations) in 12.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.500000000000e+01, best bound 6.500000000000e+01, gap 0.0%