Gurobi 5.0.1 (linux64) logging started Sun Dec 2 10:01:32 2012 Optimize a model with 196693 rows, 391612 columns and 1173510 nonzeros Presolve removed 0 rows and 0 columns (presolve time = 5s) ... Presolve time: 5.24s Presolved: 196693 rows, 391612 columns, 1173510 nonzeros Variable types: 195806 continuous, 195806 integer (195806 binary) Found heuristic solution: objective 8717.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 22678 2.7200005e+03 2.632881e+05 0.000000e+00 5s 32677 2.7200008e+03 4.363162e+04 0.000000e+00 10s 41185 2.7200012e+03 1.756340e+04 0.000000e+00 15s 51783 2.7200016e+03 3.248225e+04 0.000000e+00 20s 59650 2.7200017e+03 3.643124e+04 0.000000e+00 25s 65928 2.7200019e+03 5.692674e+04 0.000000e+00 30s 71557 2.7200022e+03 5.951084e+04 0.000000e+00 35s 77073 2.7200025e+03 4.942955e+03 0.000000e+00 40s 80990 2.7200025e+03 2.363038e+03 0.000000e+00 46s 83718 2.7200025e+03 8.989938e+02 0.000000e+00 50s 84969 2.7200025e+03 1.611743e+03 0.000000e+00 55s 86176 2.7200025e+03 1.479282e+03 0.000000e+00 61s 87012 2.7200026e+03 6.967934e+02 0.000000e+00 65s 88272 2.7200026e+03 8.997346e+02 0.000000e+00 71s 89123 2.7200027e+03 9.637304e+02 0.000000e+00 75s 90345 2.7200028e+03 8.884376e+02 0.000000e+00 81s 91125 2.7200030e+03 5.301058e+02 0.000000e+00 86s 92425 2.7200031e+03 5.295636e+02 0.000000e+00 91s 100579 2.7200000e+03 0.000000e+00 0.000000e+00 93s Root relaxation: objective 2.720000e+03, 100579 iterations, 93.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2720.00000 0 985 8717.00000 2720.00000 68.8% - 357s H 0 0 2720.0000000 2720.00000 0.0% - 377s Explored 0 nodes (397851 simplex iterations) in 377.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.720000000000e+03, best bound 2.720000000000e+03, gap 0.0%