Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:34 2012 Optimize a model with 1 rows, 30 columns and 30 nonzeros Model has 38 quadratic objective terms Presolve time: 0.00s Presolved: 39 rows, 68 columns, 144 nonzeros Variable types: 0 continuous, 68 integer (68 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 0.000000e+00, 52 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 17 10.00000 0.00000 100% - 0s 0 0 0.00000 0 8 10.00000 0.00000 100% - 0s H 0 0 7.0000000 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 7 6.00000 0.00000 100% - 0s 0 0 0.00000 0 11 6.00000 0.00000 100% - 0s 0 0 0.00000 0 11 6.00000 0.00000 100% - 0s 0 2 0.00000 0 7 6.00000 0.00000 100% - 0s * 96 29 10 5.0000000 0.00000 100% 4.4 0s * 105 18 9 4.0000000 1.00000 75.0% 5.0 0s * 113 4 5 3.0000000 1.28571 57.1% 6.1 0s Cutting planes: Gomory: 1 Cover: 63 MIR: 1 Explored 118 nodes (904 simplex iterations) in 0.02 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%