Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:21 2013 Optimize a model with 360 rows, 4120 columns and 8340 nonzeros Presolve removed 80 rows and 60 columns Presolve time: 0.01s Presolved: 280 rows, 4060 columns, 8180 nonzeros Variable types: 4040 continuous, 20 integer (20 binary) Root relaxation: objective 4.370285e+04, 419 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43702.8549 0 2 - 43702.8549 - - 0s H 0 0 44257.529669 43702.8549 1.25% - 0s H 0 0 43846.814321 43702.8549 0.33% - 0s 0 2 43709.5984 0 2 43846.8143 43709.5984 0.31% - 0s Explored 2 nodes (447 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.384681432084e+04, best bound 4.384261778699e+04, gap 0.0096%