Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:15:42 2013 Optimize a model with 48438 rows, 47748 columns and 190578 nonzeros Presolve removed 69 rows and 0 columns Presolve time: 0.21s Presolved: 48369 rows, 47748 columns, 190509 nonzeros Variable types: 47679 continuous, 69 integer (69 binary) Root relaxation: objective 5.689887e+04, 6196 iterations, 3.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 56898.8721 0 52 - 56898.8721 - - 3s H 0 0 85233.000000 56898.8721 33.2% - 5s 0 0 68903.1052 0 11 85233.0000 68903.1052 19.2% - 9s H 0 0 80543.374434 68903.1052 14.5% - 9s H 0 0 76782.000000 68903.1052 10.3% - 9s 0 0 69665.1211 0 6 76782.0000 69665.1211 9.27% - 10s H 0 0 74852.397317 69665.1211 6.93% - 10s H 0 0 72480.000000 69665.1211 3.88% - 11s 0 0 69830.1995 0 3 72480.0000 69830.1995 3.66% - 11s H 0 0 71653.000000 69830.1995 2.54% - 11s 0 0 70040.3562 0 4 71653.0000 70040.3562 2.25% - 12s 0 0 70146.6052 0 5 71653.0000 70146.6052 2.10% - 12s 0 0 70205.1534 0 4 71653.0000 70205.1534 2.02% - 12s H 0 0 71500.000000 70205.1534 1.81% - 13s 0 2 70219.0209 0 4 71500.0000 70219.0209 1.79% - 13s H 2 2 71476.634615 70410.1290 1.49% 145 14s H 7 6 71050.340426 70428.4258 0.88% 143 14s 8 9 70729.2245 7 3 71050.3404 70428.4258 0.88% 199 15s H 10 8 70740.958333 70428.4258 0.44% 179 15s * 11 5 9 70736.000000 70428.4258 0.43% 165 15s H 15 3 70714.645161 70438.0377 0.39% 135 15s H 16 4 70709.789474 70438.0377 0.38% 131 15s * 37 9 8 70702.000000 70442.4367 0.37% 115 16s * 49 0 5 70644.000000 70644.0000 0.0% 108 16s Cutting planes: Implied bound: 68 Explored 50 nodes (17284 simplex iterations) in 16.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.064400000000e+04, best bound 7.064400000000e+04, gap 0.0%