Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:22:39 2013 Optimize a model with 1800 rows, 100600 columns and 201700 nonzeros Presolve removed 400 rows and 300 columns Presolve time: 0.76s Presolved: 1400 rows, 100300 columns, 200900 nonzeros Variable types: 100200 continuous, 100 integer (100 binary) Root relaxation: objective 9.188392e+05, 6809 iterations, 1.53 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 918839.221 0 4 - 918839.221 - - 2s H 0 0 943391.91312 918839.221 2.60% - 3s H 0 0 932630.47933 918839.221 1.48% - 3s H 0 0 921451.51041 918839.221 0.28% - 5s 0 2 918914.674 0 4 921451.510 918914.674 0.28% - 6s H 6 6 919357.58554 919162.334 0.02% 158 7s H 8 3 919355.06983 919233.910 0.01% 139 7s Explored 9 nodes (7922 simplex iterations) in 7.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.193550698328e+05, best bound 9.192919746953e+05, gap 0.0069%