Gurobi 5.0.1 (linux64) logging started Tue Nov 20 15:55:25 2012 Optimize a model with 92 rows, 131 columns and 184 nonzeros Presolve removed 88 rows and 127 columns Presolve time: 0.00s Presolved: 4 rows, 4 columns, 8 nonzeros Variable types: 0 continuous, 4 integer (4 binary) Found heuristic solution: objective 91.0000000 Root relaxation: cutoff, 2 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 91.00000 91.99991 1.10% - 0s Explored 0 nodes (2 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.100000000000e+01, best bound 9.100000000000e+01, gap 0.0%