Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:18:27 2013 Optimize a model with 3000 rows, 121100 columns and 402800 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.85s Presolved: 2900 rows, 121000 columns, 382700 nonzeros Variable types: 120200 continuous, 800 integer (800 binary) Root relaxation: objective 9.188392e+05, 6777 iterations, 0.92 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 918839.221 0 12 - 918839.221 - - 2s 0 0 918879.583 0 12 - 918879.583 - - 3s 0 0 918887.284 0 14 - 918887.284 - - 4s 0 0 918890.512 0 14 - 918890.512 - - 4s 0 0 918893.298 0 15 - 918893.298 - - 4s 0 0 918894.161 0 15 - 918894.161 - - 5s 0 0 918900.371 0 17 - 918900.371 - - 6s 0 0 918901.615 0 17 - 918901.615 - - 6s 0 0 918902.225 0 17 - 918902.225 - - 6s 0 0 918902.507 0 17 - 918902.507 - - 7s 0 0 918903.616 0 17 - 918903.616 - - 8s 0 0 918903.728 0 17 - 918903.728 - - 8s 0 0 918903.793 0 17 - 918903.793 - - 9s 0 0 918903.843 0 17 - 918903.843 - - 9s 0 0 918905.533 0 16 - 918905.533 - - 10s 0 0 918906.133 0 17 - 918906.133 - - 10s 0 0 918906.133 0 17 - 918906.133 - - 11s 0 0 918906.133 0 17 - 918906.133 - - 11s 0 0 918906.133 0 17 - 918906.133 - - 12s 0 0 918906.133 0 17 - 918906.133 - - 16s 0 2 918907.092 0 17 - 918907.092 - - 23s 10 12 920327.362 9 6 - 918977.122 - 136 25s 35 37 919394.666 34 3 - 918977.122 - 42.3 30s 60 62 919467.106 59 3 - 918977.122 - 25.9 35s 86 88 919550.720 85 3 - 918977.122 - 18.9 40s 116 118 919763.211 115 3 - 918977.122 - 14.8 45s 150 152 920254.311 149 3 - 918977.122 - 12.0 50s * 247 163 246 922048.40606 918977.122 0.33% 7.8 53s 256 165 919308.501 7 3 922048.406 918992.629 0.33% 11.2 55s 378 274 919258.076 13 3 922048.406 919085.972 0.32% 13.2 60s H 385 20 919375.33788 919085.972 0.03% 13.0 60s * 421 33 56 919375.24326 919085.972 0.03% 12.4 62s Cutting planes: Flow cover: 21 Explored 433 nodes (17472 simplex iterations) in 63.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.193752432625e+05, best bound 9.192842681540e+05, gap 0.0099%