Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:21:56 2012 Optimize a model with 1 rows, 131 columns and 131 nonzeros Model has 92 quadratic objective terms Presolve removed 0 rows and 34 columns Presolve time: 0.00s Presolved: 93 rows, 189 columns, 373 nonzeros Variable types: 0 continuous, 189 integer (188 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 0.000000e+00, 107 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 16 19.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 12.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 8.00000 0.00000 100% - 0s 0 0 0.00000 0 6 8.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 5.00000 0.00000 100% - 0s 0 0 0.00000 0 6 5.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 2 0.00000 0 5 3.00000 0.00000 100% - 0s H 10 8 2.0000000 0.00000 100% 1.4 0s * 12 7 8 1.0000000 0.00000 100% 1.2 0s Cutting planes: Cover: 6 Explored 13 nodes (211 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%