Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:28 2012 Optimize a model with 853 rows, 59 columns and 1706 nonzeros Presolve removed 612 rows and 0 columns Presolve time: 0.01s Presolved: 241 rows, 59 columns, 1391 nonzeros Variable types: 0 continuous, 59 integer (59 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.001275e+01, 125 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.01275 0 48 8.00000 10.01275 25.2% - 0s H 0 0 9.0000000 10.01275 11.3% - 0s Explored 0 nodes (125 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 1.000000000000e+01, gap 11.1111%