Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:02:46 2013 Optimize a model with 54809 rows, 4761 columns and 166635 nonzeros Presolve removed 6566 rows and 2458 columns Presolve time: 0.44s Presolved: 48243 rows, 2303 columns, 146180 nonzeros Variable types: 22 continuous, 2281 integer (2281 binary) Found heuristic solution: objective 120113.00000 Root relaxation: objective 9.860024e+04, 10194 iterations, 0.86 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 98600.2400 0 9 120113.000 98600.2400 17.9% - 1s H 0 0 98613.000000 98600.2400 0.01% - 1s 0 0 98600.2400 0 17 98613.0000 98600.2400 0.01% - 1s 0 0 98600.2400 0 9 98613.0000 98600.2400 0.01% - 2s H 0 0 98610.000000 98600.2400 0.01% - 2s Explored 0 nodes (11494 simplex iterations) in 2.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.861000000000e+04, best bound 9.860100000000e+04, gap 0.0091%