Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:32 2012 Optimize a model with 1 rows, 44 columns and 44 nonzeros Model has 48 quadratic objective terms Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 49 rows, 89 columns, 185 nonzeros Variable types: 0 continuous, 89 integer (88 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 0.000000e+00, 64 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 14 13.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 11.00000 0.00000 100% - 0s 0 0 0.00000 0 21 11.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 7.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 5.00000 0.00000 100% - 0s 0 0 0.00000 0 14 5.00000 0.00000 100% - 0s 0 0 0.00000 0 13 5.00000 0.00000 100% - 0s 0 0 0.00000 0 8 5.00000 0.00000 100% - 0s 0 0 0.00000 0 7 5.00000 0.00000 100% - 0s 0 0 0.00000 0 14 5.00000 0.00000 100% - 0s 0 0 0.00000 0 14 5.00000 0.00000 100% - 0s 0 2 0.00000 0 14 5.00000 0.00000 100% - 0s H 108 18 4.0000000 0.00000 100% 7.5 0s Cutting planes: Cover: 81 MIR: 7 Zero half: 1 Explored 144 nodes (1678 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%