Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:48:00 2012 Optimize a model with 181 rows, 441 columns and 441 nonzeros Model has 360 quadratic constraints Presolve time: 2.10s Presolved: 181 rows, 441 columns, 441 nonzeros Variable types: 360 continuous, 81 integer (81 binary) Root relaxation: objective 0.000000e+00, 40 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 83.0000000 - - - 2s 0 0 0.00000 0 4 83.00000 0.00000 100% - 2s 0 0 0.00000 0 76 83.00000 0.00000 100% - 2s 0 0 0.00000 0 74 83.00000 0.00000 100% - 2s 0 2 0.00000 0 74 83.00000 0.00000 100% - 2s H 48 48 45.0000000 4.61538 89.7% 44.1 2s * 52 49 28 44.0000000 4.61538 89.5% 41.3 2s * 90 65 23 39.0000000 6.83333 82.5% 36.3 2s H 118 77 38.0000000 7.06897 81.4% 34.8 2s * 204 126 15 33.0000000 7.12500 78.4% 41.0 2s 1485 404 29.27083 35 257 33.00000 19.31579 41.5% 35.5 5s 6310 894 29.00000 32 258 33.00000 26.94444 18.4% 21.8 10s Explored 9684 nodes (195382 simplex iterations) in 13.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%