Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:22:46 2012 Optimize a model with 1 rows, 135 columns and 135 nonzeros Model has 115 quadratic objective terms Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 116 rows, 228 columns, 458 nonzeros Variable types: 0 continuous, 228 integer (227 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 148 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 32 38.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 31.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 29.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 14.00000 0.00000 100% - 0s 0 0 0.00000 0 22 14.00000 0.00000 100% - 0s 0 0 0.00000 0 14 14.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 12.00000 0.00000 100% - 0s 0 0 0.00000 0 18 12.00000 0.00000 100% - 0s 0 0 0.00000 0 17 12.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 9 6.00000 0.00000 100% - 0s H 27 21 5.0000000 0.00000 100% 1.7 0s H 245 93 4.0000000 0.00000 100% 4.5 0s H 418 105 3.0000000 0.00000 100% 9.2 0s Cutting planes: Cover: 204 MIR: 4 Zero half: 3 Explored 524 nodes (9594 simplex iterations) in 0.17 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%