Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:13:11 2012 Optimize a model with 80359 rows, 60270 columns and 300123 nonzeros Presolve removed 504 rows and 3430 columns (presolve time = 5s) ... Presolve removed 506 rows and 3432 columns Presolve time: 7.09s Presolved: 79853 rows, 56838 columns, 294816 nonzeros Variable types: 0 continuous, 56838 integer (56838 binary) Found heuristic solution: objective 245.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 36020 3.0000882e+00 3.244737e+01 0.000000e+00 5s 39723 3.0000935e+00 1.696970e+01 0.000000e+00 10s 42621 3.0000951e+00 5.144292e+01 0.000000e+00 15s 45519 3.0000974e+00 5.651429e+01 0.000000e+00 20s 48417 3.0000998e+00 1.311176e+01 0.000000e+00 25s 50993 3.0001016e+00 2.427003e+01 0.000000e+00 30s 54052 3.0001037e+00 1.773203e+01 0.000000e+00 35s 56950 3.0001060e+00 3.585938e+01 0.000000e+00 40s 60170 3.0001105e+00 4.639346e+01 0.000000e+00 45s 62585 3.0001131e+00 4.703639e+01 0.000000e+00 50s 65000 3.0001157e+00 8.889338e+02 0.000000e+00 55s 67254 3.0001161e+00 9.996775e-03 0.000000e+00 60s 67256 3.0000000e+00 0.000000e+00 0.000000e+00 60s Root relaxation: objective 3.000000e+00, 67256 iterations, 60.07 seconds Total elapsed time = 143.54s Total elapsed time = 146.01s Total elapsed time = 152.61s Total elapsed time = 157.93s 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% - 158s Explored 0 nodes (194312 simplex iterations) in 158.59 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%