Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:01:26 2012 Optimize a model with 203 rows, 601 columns and 601 nonzeros Model has 404 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 2.35s Presolved: 203 rows, 577 columns, 577 nonzeros Variable types: 404 continuous, 173 integer (172 binary) Root relaxation: objective 0.000000e+00, 71 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 103.0000000 - - - 2s 0 0 0.00000 0 3 103.00000 0.00000 100% - 2s 0 0 0.00000 0 5 103.00000 0.00000 100% - 2s 0 0 0.00000 0 87 103.00000 0.00000 100% - 2s 0 2 0.00000 0 87 103.00000 0.00000 100% - 2s H 43 43 16.0000000 1.20072 92.5% 27.8 2s H 108 55 12.0000000 1.32000 89.0% 17.5 2s * 111 58 32 11.0000000 1.32000 88.0% 17.5 2s H 545 188 10.0000000 4.40841 55.9% 16.4 2s * 831 200 25 9.0000000 5.59504 37.8% 19.7 4s H 888 175 8.0000000 5.59504 30.1% 20.8 4s 967 140 7.50639 18 457 8.00000 6.72824 15.9% 23.4 5s Explored 1009 nodes (25011 simplex iterations) in 5.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%