Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:56 2012 Optimize a model with 1 rows, 166 columns and 166 nonzeros Model has 142 quadratic objective terms Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 143 rows, 287 columns, 571 nonzeros Variable types: 0 continuous, 287 integer (286 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 0.000000e+00, 174 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 46 48.00000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 42.00000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 37.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 12.00000 0.00000 100% - 0s 0 0 0.00000 0 20 12.00000 0.00000 100% - 0s 0 0 0.00000 0 19 12.00000 0.00000 100% - 0s 0 0 0.00000 0 15 12.00000 0.00000 100% - 0s 0 0 0.00000 0 21 12.00000 0.00000 100% - 0s 0 0 0.00000 0 20 12.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 19 9.00000 0.00000 100% - 0s H 81 56 7.0000000 0.00000 100% 2.4 0s H 388 213 6.0000000 0.00000 100% 8.8 0s H 408 170 5.0000000 0.00000 100% 9.6 0s H 429 134 4.0000000 0.00000 100% 10.6 0s * 477 109 13 3.0000000 0.00000 100% 11.0 0s * 505 45 10 2.0000000 0.36975 81.5% 11.7 0s Cutting planes: Cover: 252 MIR: 5 Zero half: 2 Explored 553 nodes (9500 simplex iterations) in 0.20 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%