Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:10 2012 Optimize a model with 79 rows, 18 columns and 158 nonzeros Presolve removed 54 rows and 1 columns Presolve time: 0.00s Presolved: 25 rows, 17 columns, 81 nonzeros Variable types: 0 continuous, 17 integer (17 binary) Found heuristic solution: objective 4.0000000 Root relaxation: objective 5.500000e+00, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5.50000 0 11 4.00000 5.50000 37.5% - 0s H 0 0 5.0000000 5.50000 10.0% - 0s Explored 0 nodes (22 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%