Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:03:15 2013 Optimize a model with 54809 rows, 4761 columns and 166635 nonzeros Presolve removed 2975 rows and 2386 columns Presolve time: 0.44s Presolved: 51834 rows, 2375 columns, 158010 nonzeros Variable types: 38 continuous, 2337 integer (2337 binary) Found heuristic solution: objective 99739.000000 Root relaxation: objective 7.019305e+04, 27281 iterations, 2.77 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 70193.0500 0 19 99739.0000 70193.0500 29.6% - 3s H 0 0 70221.000000 70193.0500 0.04% - 3s H 0 0 70215.000000 70193.0500 0.03% - 3s H 0 0 70209.000000 70193.0500 0.02% - 3s 0 0 70194.0000 0 19 70209.0000 70194.0000 0.02% - 3s 0 0 70194.0000 0 17 70209.0000 70194.0000 0.02% - 4s 0 0 70194.0000 0 18 70209.0000 70194.0000 0.02% - 4s 0 2 70194.0000 0 18 70209.0000 70194.0000 0.02% - 4s 4 5 70194.0000 0 22 70209.0000 70194.0000 0.02% 31.8 5s H 4 4 70206.000000 70194.0000 0.02% 31.8 5s H 8 7 70204.000000 70194.0000 0.01% 15.9 5s H 93 59 70203.000000 70194.0000 0.01% 168 6s H 393 153 70199.000000 70194.0000 0.01% 61.9 7s Cutting planes: Gomory: 6 MIR: 37 Zero half: 8 Explored 393 nodes (57899 simplex iterations) in 7.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.019900000000e+04, best bound 7.019400000000e+04, gap 0.0071%