Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:17 2012 Optimize a model with 1 rows, 155 columns and 155 nonzeros Model has 122 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 123 rows, 249 columns, 493 nonzeros Variable types: 0 continuous, 249 integer (248 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 155 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 32.00000 0.00000 100% - 0s 0 0 0.00000 0 27 32.00000 0.00000 100% - 0s 0 0 0.00000 0 40 32.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 20.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 8.00000 0.00000 100% - 0s 0 0 0.00000 0 15 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 7.00000 0.00000 100% - 0s H 246 125 6.0000000 0.00000 100% 4.5 0s H 282 109 5.0000000 0.00000 100% 4.7 0s H 302 102 4.0000000 0.00000 100% 5.1 0s * 456 49 14 2.0000000 0.00000 100% 7.2 0s Cutting planes: Cover: 206 MIR: 3 Zero half: 1 Explored 506 nodes (6248 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%