Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:22:58 2012 Optimize a model with 78889 rows, 60270 columns and 295713 nonzeros Presolve removed 990 rows and 2450 columns (presolve time = 5s) ... Presolve removed 992 rows and 2452 columns Presolve time: 6.73s Presolved: 77897 rows, 57818 columns, 290177 nonzeros Variable types: 0 continuous, 57818 integer (57818 binary) Found heuristic solution: objective 245.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 40694 3.0001138e+00 6.690000e+02 0.000000e+00 5s 45871 3.0001548e+00 1.710000e+02 0.000000e+00 10s 55786 3.0001769e+00 3.950000e+01 0.000000e+00 15s 58966 3.0001832e+00 6.700287e+02 0.000000e+00 20s 61510 3.0001874e+00 1.075530e+02 0.000000e+00 25s 64054 3.0001913e+00 1.466852e+02 0.000000e+00 30s 66439 3.0001949e+00 1.673988e+02 0.000000e+00 35s 69142 3.0002003e+00 1.690204e+01 0.000000e+00 40s 71686 3.0002052e+00 2.365626e+01 0.000000e+00 45s 74389 3.0002104e+00 3.021883e+01 0.000000e+00 50s 76933 3.0002159e+00 1.180921e+01 0.000000e+00 55s 79795 3.0002218e+00 1.298480e+02 0.000000e+00 60s 82498 3.0002269e+00 1.388216e+01 0.000000e+00 65s 84883 3.0002302e+00 3.457500e+02 0.000000e+00 70s 87268 3.0002327e+00 2.730518e+00 0.000000e+00 75s 88971 3.0000000e+00 0.000000e+00 0.000000e+00 79s Root relaxation: objective 3.000000e+00, 88971 iterations, 79.16 seconds Total elapsed time = 144.74s Total elapsed time = 146.66s Total elapsed time = 151.90s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 155s Explored 0 nodes (196271 simplex iterations) in 155.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%