Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:58 2012 Optimize a model with 144 rows, 443 columns and 443 nonzeros Model has 286 quadratic constraints Presolve removed 0 rows and 21 columns Presolve time: 1.67s Presolved: 144 rows, 422 columns, 422 nonzeros Variable types: 286 continuous, 136 integer (135 binary) Root relaxation: objective 0.000000e+00, 53 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 64.0000000 - - - 1s 0 0 0.00000 0 49 64.00000 0.00000 100% - 1s 0 0 0.00000 0 60 64.00000 0.00000 100% - 1s 0 0 0.00000 0 98 64.00000 0.00000 100% - 1s 0 2 0.00000 0 98 64.00000 0.00000 100% - 1s H 27 27 10.0000000 1.18182 88.2% 31.3 1s * 56 34 42 6.0000000 1.18182 80.3% 19.6 1s H 127 73 6.0000000 1.90909 68.2% 14.3 1s * 127 27 9 5.0000000 1.90909 61.8% 14.3 1s * 184 19 6 4.0000000 2.17910 45.5% 12.0 1s Cutting planes: Explored 231 nodes (4852 simplex iterations) in 1.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%