Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:26 2013 Optimize a model with 34 rows, 2070 columns and 26041 nonzeros Presolve removed 12 rows and 60 columns Presolve time: 0.13s Presolved: 22 rows, 2010 columns, 24018 nonzeros Variable types: 2000 continuous, 10 integer (10 binary) Root relaxation: objective 2.689073e+03, 18 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2689.07287 0 4 - 2689.07287 - - 0s 0 0 2689.07384 0 4 - 2689.07384 - - 0s 0 0 2689.07388 0 4 - 2689.07388 - - 0s 0 0 2689.08922 0 5 - 2689.08922 - - 0s 0 0 2689.08922 0 5 - 2689.08922 - - 0s H 0 0 2689.1102444 2689.08922 0.00% - 0s Cutting planes: Implied bound: 2 Flow cover: 1 Explored 0 nodes (54 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.689110244363e+03, best bound 2.689089216686e+03, gap 0.0008%