Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:38 2012 Optimize a model with 2155 rows, 94 columns and 4310 nonzeros Presolve removed 1532 rows and 0 columns Presolve time: 0.06s Presolved: 623 rows, 94 columns, 4114 nonzeros Variable types: 0 continuous, 94 integer (94 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.380699e+01, 329 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.80699 0 83 8.00000 13.80699 72.6% - 0s 0 0 13.42762 0 90 8.00000 13.42762 67.8% - 0s 0 0 13.32487 0 92 8.00000 13.32487 66.6% - 0s 0 0 13.24350 0 92 8.00000 13.24350 65.5% - 0s H 0 0 9.0000000 13.24350 47.2% - 0s 0 0 13.22945 0 92 9.00000 13.22945 47.0% - 0s 0 0 13.22677 0 92 9.00000 13.22677 47.0% - 0s 0 0 13.22329 0 93 9.00000 13.22329 46.9% - 0s 0 0 13.22288 0 93 9.00000 13.22288 46.9% - 0s 0 0 13.22277 0 92 9.00000 13.22277 46.9% - 0s 0 0 13.22264 0 93 9.00000 13.22264 46.9% - 0s 0 0 13.22262 0 93 9.00000 13.22262 46.9% - 1s 0 2 13.21883 0 93 9.00000 13.21883 46.9% - 1s Cutting planes: Clique: 80 Explored 124 nodes (7765 simplex iterations) in 1.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%