Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:12 2012 Optimize a model with 276 rows, 33 columns and 552 nonzeros Presolve removed 199 rows and 0 columns Presolve time: 0.00s Presolved: 77 rows, 33 columns, 384 nonzeros Variable types: 0 continuous, 33 integer (33 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 6.900000e+00, 51 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 6.90000 0 22 5.00000 6.90000 38.0% - 0s H 0 0 6.0000000 6.90000 15.0% - 0s Explored 0 nodes (55 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%