Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:21 2012 Optimize a model with 188 rows, 572 columns and 572 nonzeros Model has 374 quadratic constraints Presolve removed 0 rows and 26 columns Presolve time: 2.18s Presolved: 188 rows, 546 columns, 546 nonzeros Variable types: 374 continuous, 172 integer (171 binary) Root relaxation: objective 0.000000e+00, 67 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 3 84.00000 0.00000 100% - 2s 0 0 0.00000 0 7 84.00000 0.00000 100% - 2s 0 0 0.00000 0 5 84.00000 0.00000 100% - 2s 0 2 0.00000 0 112 84.00000 0.00000 100% - 2s H 37 37 12.0000000 0.75676 93.7% 49.4 2s * 39 32 26 10.0000000 0.75676 92.4% 49.7 2s * 153 41 11 7.0000000 1.28571 81.6% 22.4 2s H 714 45 7.0000000 6.45602 7.77% 17.5 2s Cutting planes: Explored 790 nodes (14187 simplex iterations) in 2.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.999999998786e+00, best bound 6.999999998786e+00, gap 0.0%