Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:04:49 2013 Optimize a model with 298 rows, 144 columns and 936 nonzeros Presolve removed 117 rows and 78 columns Presolve time: 0.00s Presolved: 181 rows, 66 columns, 588 nonzeros Variable types: 5 continuous, 61 integer (61 binary) Found heuristic solution: objective 1919.0000000 Root relaxation: objective 1.595763e+03, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1595.76316 0 4 1919.00000 1595.76316 16.8% - 0s H 0 0 1601.0000000 1595.76316 0.33% - 0s 0 0 1599.22857 0 6 1601.00000 1599.22857 0.11% - 0s 0 0 1599.22857 0 3 1601.00000 1599.22857 0.11% - 0s 0 0 cutoff 0 1601.00000 1600.00160 0.06% - 0s Cutting planes: Cover: 3 MIR: 4 Explored 0 nodes (36 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.601000000000e+03, best bound 1.601000000000e+03, gap 0.0%