Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:40 2012 Optimize a model with 1 rows, 175 columns and 175 nonzeros Model has 165 quadratic objective terms Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 166 rows, 321 columns, 651 nonzeros Variable types: 0 continuous, 321 integer (320 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 0.000000e+00, 218 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 43 42.00000 0.00000 100% - 0s 0 0 0.00000 0 30 42.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 42 23.00000 0.00000 100% - 0s 0 0 0.00000 0 29 23.00000 0.00000 100% - 0s 0 0 0.00000 0 20 23.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 19.00000 0.00000 100% - 0s 0 0 0.00000 0 20 19.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 20 15.00000 0.00000 100% - 0s H 27 27 14.0000000 0.00000 100% 1.5 0s H 81 69 12.0000000 0.00000 100% 2.4 0s * 459 316 43 11.0000000 0.00000 100% 5.8 0s H 544 295 9.0000000 0.00000 100% 7.1 0s H 699 296 8.0000000 1.00000 87.5% 9.4 0s * 711 238 18 7.0000000 1.00000 85.7% 9.5 0s Cutting planes: Cover: 308 MIR: 3 Explored 1017 nodes (31416 simplex iterations) in 0.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%