Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:49 2012 Optimize a model with 1 rows, 154 columns and 154 nonzeros Model has 127 quadratic objective terms Presolve removed 0 rows and 30 columns Presolve time: 0.00s Presolved: 128 rows, 251 columns, 505 nonzeros Variable types: 0 continuous, 251 integer (250 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 154 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 23 29.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 22.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 15.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 37 9.00000 0.00000 100% - 0s 0 0 0.00000 0 18 9.00000 0.00000 100% - 0s 0 0 0.00000 0 20 9.00000 0.00000 100% - 0s 0 0 0.00000 0 20 9.00000 0.00000 100% - 0s 0 2 0.00000 0 20 9.00000 0.00000 100% - 0s H 108 59 6.0000000 0.00000 100% 4.8 0s H 225 95 5.0000000 0.00000 100% 7.3 0s * 270 46 6 3.0000000 0.00000 100% 8.7 0s Cutting planes: Cover: 215 MIR: 4 Zero half: 2 Explored 365 nodes (7269 simplex iterations) in 0.15 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%