Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:13 2012 Optimize a model with 407 rows, 41 columns and 814 nonzeros Presolve removed 274 rows and 0 columns Presolve time: 0.01s Presolved: 133 rows, 41 columns, 715 nonzeros Variable types: 0 continuous, 41 integer (41 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 8.072109e+00, 72 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8.07211 0 32 5.00000 8.07211 61.4% - 0s H 0 0 6.0000000 8.07211 34.5% - 0s H 0 0 7.0000000 8.07211 15.3% - 0s Cutting planes: Clique: 1 Explored 0 nodes (72 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 8.000000000000e+00, gap 14.2857%