Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:11:42 2012 Optimize a model with 68561 rows, 54990 columns and 259504 nonzeros Presolve removed 1431 rows and 6318 columns (presolve time = 5s) ... Presolve removed 1433 rows and 6320 columns Presolve time: 5.63s Presolved: 67128 rows, 48670 columns, 249102 nonzeros Variable types: 0 continuous, 48670 integer (48670 binary) Found heuristic solution: objective 234.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 36111 3.0001069e+00 4.627500e+02 0.000000e+00 5s 41227 3.0001406e+00 1.180000e+02 0.000000e+00 10s 48481 3.0001605e+00 7.804890e+02 0.000000e+00 15s 51312 3.0001683e+00 5.317076e+02 0.000000e+00 20s 54143 3.0001728e+00 4.216044e+02 0.000000e+00 25s 56974 3.0001772e+00 1.997561e+02 0.000000e+00 30s 59656 3.0001813e+00 1.143714e+02 0.000000e+00 35s 62338 3.0001848e+00 7.402249e+01 0.000000e+00 40s 65020 3.0001882e+00 1.985943e+01 0.000000e+00 45s 67702 3.0001915e+00 1.894218e+02 0.000000e+00 50s 70533 3.0001951e+00 5.088997e+01 0.000000e+00 55s 73066 3.0001976e+00 7.627275e+01 0.000000e+00 60s 75748 3.0002004e+00 1.583940e+02 0.000000e+00 65s 78430 3.0002039e+00 3.447114e+01 0.000000e+00 70s 81112 3.0002076e+00 1.617996e+02 0.000000e+00 75s 83645 3.0002102e+00 2.627582e+01 0.000000e+00 80s 86327 3.0002130e+00 5.829442e+02 0.000000e+00 85s 88860 3.0002153e+00 1.204149e+01 0.000000e+00 90s 91244 3.0002169e+00 8.516524e+01 0.000000e+00 95s 93777 3.0002184e+00 4.381567e+00 0.000000e+00 100s 96310 3.0002194e+00 6.296843e+00 0.000000e+00 105s 97448 3.0000000e+00 0.000000e+00 0.000000e+00 107s Root relaxation: objective 3.000000e+00, 97448 iterations, 107.25 seconds Total elapsed time = 170.54s Total elapsed time = 188.10s 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% - 195s Explored 0 nodes (208060 simplex iterations) in 195.82 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%