Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:50 2013 Optimize a model with 140 rows, 1530 columns and 3540 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.00s Presolved: 130 rows, 1520 columns, 3030 nonzeros Variable types: 1520 continuous, 0 integer (0 binary) Root relaxation: objective 2.162324e+04, 116 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21623.2446 0 2 - 21623.2446 - - 0s 0 2 21623.2446 0 2 - 21623.2446 - - 0s * 2 2 1 22011.316113 21675.3035 1.53% 9.0 0s * 23 11 12 21760.141664 21747.3031 0.06% 3.8 0s * 24 4 12 21759.374832 21747.3031 0.06% 3.7 0s Explored 33 nodes (210 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.175937483245e+04, best bound 2.175794658157e+04, gap 0.0066%