Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:26 2012 Optimize a model with 1 rows, 146 columns and 146 nonzeros Model has 122 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 123 rows, 240 columns, 484 nonzeros Variable types: 0 continuous, 240 integer (239 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 147 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 29 32.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 28.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 40 13.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 12.00000 0.00000 100% - 0s 0 0 0.00000 0 14 12.00000 0.00000 100% - 0s 0 0 0.00000 0 17 12.00000 0.00000 100% - 0s 0 0 0.00000 0 17 12.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 11.00000 0.00000 100% - 0s H 102 46 7.0000000 0.00000 100% 3.5 0s H 105 43 6.0000000 0.00000 100% 3.5 0s H 112 44 5.0000000 0.00000 100% 3.5 0s H 303 81 4.0000000 0.00000 100% 9.4 0s Cutting planes: Cover: 224 MIR: 4 Explored 417 nodes (10657 simplex iterations) in 0.19 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%