Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:07 2013 Optimize a model with 242 rows, 4862 columns and 9702 nonzeros Presolve time: 0.01s Presolved: 242 rows, 4862 columns, 9702 nonzeros Variable types: 4840 continuous, 22 integer (22 binary) Root relaxation: objective 2.098337e+04, 178 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 20983.3737 0 6 - 20983.3737 - - 0s H 0 0 21339.000000 20983.3737 1.67% - 0s H 0 0 21191.000000 20983.3737 0.98% - 0s 0 0 21186.7083 0 1 21191.0000 21186.7083 0.02% - 0s 0 0 21187.1905 0 1 21191.0000 21187.1905 0.02% - 0s 0 0 21189.1918 0 1 21191.0000 21189.1918 0.01% - 0s Cutting planes: Implied bound: 28 Flow cover: 6 Explored 0 nodes (232 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.119100000000e+04, best bound 2.118919178082e+04, gap 0.0085%