Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:36 2012 Optimize a model with 1 rows, 156 columns and 156 nonzeros Model has 151 quadratic objective terms Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 152 rows, 286 columns, 588 nonzeros Variable types: 0 continuous, 286 integer (285 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 195 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 49 40.00000 0.00000 100% - 0s 0 0 0.00000 0 28 40.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 20.00000 0.00000 100% - 0s 0 0 0.00000 0 19 20.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 17.00000 0.00000 100% - 0s 0 0 0.00000 0 19 17.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 19 15.00000 0.00000 100% - 0s H 27 27 12.0000000 0.00000 100% 1.4 0s H 54 43 11.0000000 0.00000 100% 1.5 0s H 108 77 9.0000000 0.00000 100% 2.0 0s H 353 223 8.0000000 0.00000 100% 8.8 0s * 423 195 12 7.0000000 0.00000 100% 11.0 0s Cutting planes: Cover: 286 MIR: 2 Explored 715 nodes (23558 simplex iterations) in 0.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%