Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:39 2012 Optimize a model with 1 rows, 143 columns and 143 nonzeros Model has 120 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 121 rows, 239 columns, 479 nonzeros Variable types: 0 continuous, 239 integer (238 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 151 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 28 28.00000 0.00000 100% - 0s 0 0 0.00000 0 23 28.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 16.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 13.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 11.00000 0.00000 100% - 0s 0 0 0.00000 0 22 11.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 7.00000 0.00000 100% - 0s 0 0 0.00000 0 18 7.00000 0.00000 100% - 0s 0 0 0.00000 0 18 7.00000 0.00000 100% - 0s 0 0 0.00000 0 18 7.00000 0.00000 100% - 0s 0 2 0.00000 0 18 7.00000 0.00000 100% - 0s H 272 151 6.0000000 0.00000 100% 5.7 0s H 299 139 5.0000000 0.00000 100% 5.5 0s H 308 105 4.0000000 0.00000 100% 5.8 0s H 326 90 3.0000000 0.00000 100% 6.3 0s H 353 69 2.0000000 0.00000 100% 7.4 0s Cutting planes: Cover: 201 MIR: 3 Explored 493 nodes (8374 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%