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 107 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 108 rows, 214 columns, 428 nonzeros Variable types: 0 continuous, 214 integer (213 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 131 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 30 33.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 28.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 18.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 12.00000 0.00000 100% - 0s 0 0 0.00000 0 14 12.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 8.00000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s 0 0 0.00000 0 17 8.00000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 12 7.00000 0.00000 100% - 0s * 58 41 15 6.0000000 0.00000 100% 2.1 0s H 189 88 5.0000000 0.00000 100% 3.2 0s H 363 144 4.0000000 0.00000 100% 4.9 0s * 405 75 12 3.0000000 0.00000 100% 5.4 0s Cutting planes: Cover: 174 Explored 541 nodes (6897 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%