Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:55:24 2012 Optimize a model with 183 rows, 553 columns and 553 nonzeros Model has 364 quadratic constraints Presolve removed 0 rows and 17 columns Presolve time: 2.12s Presolved: 183 rows, 536 columns, 536 nonzeros Variable types: 364 continuous, 172 integer (171 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 87.0000000 - - - 2s 0 0 0.00000 0 62 87.00000 0.00000 100% - 2s 0 0 0.00000 0 69 87.00000 0.00000 100% - 2s 0 0 0.00000 0 3 87.00000 0.00000 100% - 2s 0 2 0.00000 0 102 87.00000 0.00000 100% - 2s H 27 27 15.0000000 1.03214 93.1% 36.3 2s H 32 32 12.0000000 1.03214 91.4% 32.4 2s * 34 30 21 8.0000000 1.03214 87.1% 31.4 2s * 58 33 19 7.0000000 1.07998 84.6% 28.2 2s * 90 23 13 6.0000000 1.52746 74.5% 23.3 2s H 150 40 6.0000000 2.35768 60.7% 17.8 2s * 157 27 11 5.0000000 2.35768 52.8% 18.3 2s H 210 21 5.0000000 2.85182 43.0% 17.6 2s Cutting planes: Explored 283 nodes (5937 simplex iterations) in 2.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.999999998692e+00, best bound 4.999999998692e+00, gap 0.0%