Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:23:12 2012 Optimize a model with 1 rows, 137 columns and 137 nonzeros Model has 102 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 103 rows, 211 columns, 415 nonzeros Variable types: 0 continuous, 211 integer (210 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 119 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 21 21.00000 0.00000 100% - 0s 0 0 0.00000 0 17 21.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 10.00000 0.00000 100% - 0s 0 0 0.00000 0 8 10.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 6.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 4.00000 0.00000 100% - 0s 0 0 0.00000 0 9 4.00000 0.00000 100% - 0s 0 0 0.00000 0 6 4.00000 0.00000 100% - 0s 0 0 0.00000 0 5 4.00000 0.00000 100% - 0s 0 0 0.00000 0 7 4.00000 0.00000 100% - 0s 0 0 0.00000 0 7 4.00000 0.00000 100% - 0s 0 2 0.00000 0 7 4.00000 0.00000 100% - 0s H 27 16 3.0000000 0.00000 100% 2.2 0s H 113 23 2.0000000 0.00000 100% 2.0 0s H 227 14 1.0000000 0.00000 100% 2.3 0s Cutting planes: Cover: 59 Explored 228 nodes (912 simplex iterations) in 0.05 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%