Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:43:07 2012 Optimize a model with 172 rows, 517 columns and 517 nonzeros Model has 342 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 2.00s Presolved: 172 rows, 494 columns, 494 nonzeros Variable types: 342 continuous, 152 integer (151 binary) Root relaxation: objective 0.000000e+00, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 80.0000000 - - - 2s 0 0 0.00000 0 62 80.00000 0.00000 100% - 2s 0 0 0.00000 0 94 80.00000 0.00000 100% - 2s 0 0 0.00000 0 108 80.00000 0.00000 100% - 2s 0 2 0.00000 0 108 80.00000 0.00000 100% - 2s H 27 27 10.0000000 1.98978 80.1% 38.0 2s * 58 31 12 9.0000000 1.99083 77.9% 26.3 2s * 223 62 37 8.0000000 2.70195 66.2% 15.2 2s * 304 31 13 6.0000000 3.72340 37.9% 15.5 2s Cutting planes: Explored 352 nodes (7133 simplex iterations) in 2.29 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%