Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:55:29 2012 Optimize a model with 181 rows, 549 columns and 549 nonzeros Model has 360 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 2.10s Presolved: 181 rows, 527 columns, 527 nonzeros Variable types: 360 continuous, 167 integer (166 binary) Root relaxation: objective 0.000000e+00, 65 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 84.0000000 - - - 2s 0 0 0.00000 0 81 84.00000 0.00000 100% - 2s 0 0 0.00000 0 101 84.00000 0.00000 100% - 2s 0 0 0.00000 0 101 84.00000 0.00000 100% - 2s 0 2 0.00000 0 89 84.00000 0.00000 100% - 2s * 41 38 30 9.0000000 0.80000 91.1% 40.6 2s H 64 49 8.0000000 0.83333 89.6% 31.2 2s * 293 126 31 7.0000000 2.31250 67.0% 17.4 2s H 344 153 7.0000000 2.31250 67.0% 16.3 2s * 646 237 24 6.0000000 3.71212 38.1% 21.6 3s Explored 879 nodes (21640 simplex iterations) in 3.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%