Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:47:02 2013 Optimize a model with 1160 rows, 3030 columns and 9050 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.10s Presolved: 1150 rows, 3020 columns, 8040 nonzeros Variable types: 2020 continuous, 1000 integer (1000 binary) Root relaxation: objective 1.937272e+04, 134 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19372.7157 0 4 - 19372.7157 - - 0s 0 0 19400.4664 0 4 - 19400.4664 - - 0s 0 0 19410.0829 0 4 - 19410.0829 - - 0s 0 0 19416.0114 0 5 - 19416.0114 - - 0s 0 0 19420.0922 0 5 - 19420.0922 - - 0s 0 0 19421.8694 0 7 - 19421.8694 - - 0s 0 0 19422.5487 0 4 - 19422.5487 - - 0s 0 0 19422.7711 0 8 - 19422.7711 - - 0s 0 0 19422.9805 0 8 - 19422.9805 - - 0s 0 0 19422.9805 0 8 - 19422.9805 - - 0s 0 2 19422.9805 0 8 - 19422.9805 - - 0s * 28 8 14 19513.736503 19513.4890 0.00% 14.1 0s Cutting planes: Gomory: 2 Implied bound: 17 Flow cover: 4 Explored 29 nodes (673 simplex iterations) in 0.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.951373650331e+04, best bound 1.951348897088e+04, gap 0.0013%