Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:24 2012 Optimize a model with 1 rows, 36 columns and 36 nonzeros Model has 44 quadratic objective terms Presolve removed 0 rows and 4 columns Presolve time: 0.00s Presolved: 45 rows, 76 columns, 164 nonzeros Variable types: 0 continuous, 76 integer (75 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 0.000000e+00, 59 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 10 13.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 10.00000 0.00000 100% - 0s 0 0 0.00000 0 10 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 8.00000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 12 6.00000 0.00000 100% - 0s Cutting planes: Cover: 82 MIR: 3 Zero half: 1 Explored 184 nodes (1793 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%