Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:57 2012 Optimize a model with 49 rows, 46 columns and 98 nonzeros Presolve removed 37 rows and 35 columns Presolve time: 0.00s Presolved: 12 rows, 11 columns, 24 nonzeros Variable types: 0 continuous, 11 integer (11 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 2.850000e+01, 11 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28.50000 0 11 27.00000 28.50000 5.56% - 0s H 0 0 28.0000000 28.50000 1.79% - 0s Explored 0 nodes (12 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%