Gurobi 5.0.1 (linux64) logging started Mon Feb 4 21:14:32 2013 Optimize a model with 972150 rows, 32400 columns and 2932200 nonzeros Presolve removed 20810 rows and 16250 columns (presolve time = 5s) ... Presolve removed 27300 rows and 16267 columns (presolve time = 10s) ... Presolve removed 28164 rows and 16270 columns Presolve time: 14.82s Presolved: 943986 rows, 16130 columns, 2847531 nonzeros Variable types: 88 continuous, 16042 integer (16042 binary) Found heuristic solution: objective 706148.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 6004 4.2988068e+05 0.000000e+00 8.144133e+08 6s 12008 4.3035964e+05 0.000000e+00 2.002509e+09 11s 18012 4.3127162e+05 0.000000e+00 1.810246e+09 16s 24016 4.3240390e+05 0.000000e+00 3.560237e+09 21s 28519 4.3422556e+05 0.000000e+00 6.565882e+09 25s 36024 4.3829737e+05 0.000000e+00 7.803797e+08 31s 45030 4.4135957e+05 0.000000e+00 9.760714e+08 36s 54036 4.4425081e+05 0.000000e+00 3.874670e+08 40s 64543 4.4597062e+05 0.000000e+00 4.043593e+08 45s 73549 4.4765157e+05 0.000000e+00 1.116306e+11 50s 82555 4.5081346e+05 0.000000e+00 2.457625e+09 55s 91561 4.5360860e+05 0.000000e+00 5.657631e+08 60s 100573 4.5529693e+05 0.000000e+00 9.224159e+08 65s 109579 4.5786460e+05 0.000000e+00 5.798048e+08 70s 120086 4.6088876e+05 0.000000e+00 3.199701e+09 75s 130600 4.6343471e+05 0.000000e+00 4.039890e+08 80s 142611 4.6642149e+05 0.000000e+00 1.123660e+09 86s 151622 4.6859555e+05 0.000000e+00 1.797501e+09 91s 160628 4.7085119e+05 0.000000e+00 9.291425e+08 95s 172646 4.7279194e+05 0.000000e+00 2.837686e+08 100s 184666 4.7707933e+05 0.000000e+00 6.059534e+07 105s 198175 4.8356626e+05 0.000000e+00 1.087920e+08 110s 213185 4.9343148e+05 0.000000e+00 1.358792e+08 116s 223692 5.0066372e+05 0.000000e+00 2.639570e+07 120s 235700 5.0910131e+05 0.000000e+00 5.972704e+06 125s 244706 5.1515072e+05 0.000000e+00 1.721560e+06 131s 247708 5.1664449e+05 0.000000e+00 7.048282e+04 136s 248417 5.1660550e+05 0.000000e+00 0.000000e+00 138s 248417 5.1660550e+05 0.000000e+00 0.000000e+00 138s Root relaxation: objective 5.166055e+05, 248417 iterations, 138.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 516605.500 0 18 706148.000 516605.500 26.8% - 160s H 0 0 516624.00000 516605.500 0.00% - 160s Explored 0 nodes (248971 simplex iterations) in 160.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.166240000000e+05, best bound 5.166060000000e+05, gap 0.0035%