Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:43:25 2013 Optimize a model with 2452 rows, 90041 columns and 5433754 nonzeros Presolve removed 2 rows and 0 columns (presolve time = 5s) ... Presolve removed 2 rows and 0 columns Presolve time: 6.94s Presolved: 2450 rows, 90041 columns, 5433747 nonzeros Variable types: 0 continuous, 90041 integer (90041 binary) Found heuristic solution: objective 48434.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 6794 3.5093459e+04 1.332256e+03 0.000000e+00 5s 10634 3.5995245e+04 1.862107e+03 0.000000e+00 10s 13514 3.6223358e+04 6.025989e+02 0.000000e+00 15s 15594 3.6310561e+04 6.562174e+02 0.000000e+00 20s 18154 3.6367444e+04 1.206250e+03 0.000000e+00 26s 20394 3.6409750e+04 1.832117e+03 0.000000e+00 30s 22314 3.6425942e+04 5.166348e+03 0.000000e+00 36s 23434 3.6436029e+04 2.469383e+03 0.000000e+00 40s 24714 3.6443001e+04 9.277923e+01 0.000000e+00 46s 25419 3.6443000e+04 0.000000e+00 0.000000e+00 50s Root relaxation: objective 3.644300e+04, 25419 iterations, 50.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 36443.000000 36443.0000 0.0% - 58s Explored 0 nodes (25419 simplex iterations) in 58.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.644300000000e+04, best bound 3.644300000000e+04, gap 0.0%