Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:52:43 2012 Optimize a model with 176 rows, 533 columns and 533 nonzeros Model has 350 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 2.04s Presolved: 176 rows, 510 columns, 510 nonzeros Variable types: 350 continuous, 160 integer (159 binary) Root relaxation: objective 0.000000e+00, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 86.0000000 - - - 2s 0 0 0.00000 0 2 86.00000 0.00000 100% - 2s 0 0 0.00000 0 44 86.00000 0.00000 100% - 2s 0 0 0.00000 0 44 86.00000 0.00000 100% - 2s 0 2 0.00000 0 129 86.00000 0.00000 100% - 2s * 12 12 7 7.0000000 1.87943 73.2% 89.2 2s * 18 14 12 6.0000000 1.87943 68.7% 64.3 2s Cutting planes: Explored 122 nodes (4350 simplex iterations) in 2.24 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%