Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:56 2012 Optimize a model with 1 rows, 157 columns and 157 nonzeros Model has 132 quadratic objective terms Presolve removed 0 rows and 30 columns Presolve time: 0.00s Presolved: 133 rows, 259 columns, 523 nonzeros Variable types: 0 continuous, 259 integer (258 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 168 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 37 29.00000 0.00000 100% - 0s 0 0 0.00000 0 22 29.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 16.00000 0.00000 100% - 0s 0 0 0.00000 0 22 16.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 10.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 6.00000 0.00000 100% - 0s 0 0 0.00000 0 12 6.00000 0.00000 100% - 0s 0 2 0.00000 0 12 6.00000 0.00000 100% - 0s H 136 35 3.0000000 0.00000 100% 3.4 0s Cutting planes: Cover: 226 MIR: 2 Explored 351 nodes (7227 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%