Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:58:53 2012 Optimize a model with 144 rows, 341 columns and 341 nonzeros Model has 286 quadratic constraints Presolve time: 1.67s Presolved: 144 rows, 341 columns, 341 nonzeros Variable types: 286 continuous, 55 integer (55 binary) Root relaxation: objective 0.000000e+00, 27 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 70.0000000 - - - 1s 0 0 0.00000 0 30 70.00000 0.00000 100% - 1s 0 0 0.07949 0 55 70.00000 0.07949 100% - 1s H 0 0 64.0000000 0.07949 100% - 1s 0 2 0.10987 0 55 64.00000 0.10987 100% - 1s H 53 53 42.0000000 4.10000 90.2% 27.7 1s * 55 50 31 41.0000000 4.10000 90.0% 27.1 1s * 123 93 19 39.0000000 6.64444 83.0% 31.6 1s * 124 89 19 38.0000000 6.64444 82.5% 31.3 1s * 981 464 50 37.0000000 13.66667 63.1% 38.8 3s 2522 829 30.53333 40 197 37.00000 19.60000 47.0% 26.9 5s * 4134 1241 49 36.0000000 22.38462 37.8% 23.6 8s 5280 1483 34.80488 46 187 36.00000 24.00000 33.3% 22.3 10s 9045 1788 34.64865 37 199 36.00000 27.16667 24.5% 20.4 15s 15097 1150 32.95238 41 201 36.00000 30.90476 14.2% 18.9 20s Explored 17477 nodes (321948 simplex iterations) in 21.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%