Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:58:15 2013 Optimize a model with 2000 rows, 102100 columns and 206700 nonzeros Presolve removed 100 rows and 700 columns Presolve time: 0.23s Presolved: 1900 rows, 101400 columns, 205700 nonzeros Variable types: 101100 continuous, 300 integer (300 binary) Root relaxation: objective 7.543716e+05, 5739 iterations, 0.41 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 4 - 754371.571 - - 0s H 0 0 799636.19752 754371.571 5.66% - 0s 0 0 754447.078 0 4 799636.198 754447.078 5.65% - 1s 0 0 754482.608 0 3 799636.198 754482.608 5.65% - 1s 0 0 754506.399 0 5 799636.198 754506.399 5.64% - 1s 0 0 754517.760 0 4 799636.198 754517.760 5.64% - 2s 0 0 754517.959 0 4 799636.198 754517.959 5.64% - 2s 0 0 754519.581 0 4 799636.198 754519.581 5.64% - 2s 0 0 754522.126 0 4 799636.198 754522.126 5.64% - 3s 0 0 754524.577 0 4 799636.198 754524.577 5.64% - 3s 0 0 754524.658 0 4 799636.198 754524.658 5.64% - 3s 0 0 754525.142 0 4 799636.198 754525.142 5.64% - 4s 0 0 754525.301 0 4 799636.198 754525.301 5.64% - 4s 0 0 754525.301 0 4 799636.198 754525.301 5.64% - 4s 0 2 754525.475 0 4 799636.198 754525.475 5.64% - 5s H 27 19 757741.01239 754796.068 0.39% 74.6 8s 43 22 755948.890 42 2 757741.012 754796.068 0.39% 52.7 10s H 54 16 756096.75618 754796.068 0.17% 42.6 10s H 81 35 756060.44872 754831.518 0.16% 47.6 12s 162 88 755699.820 12 2 756060.449 754995.078 0.14% 44.6 15s * 258 16 27 755674.17564 755599.963 0.01% 49.7 19s Cutting planes: Flow cover: 38 Explored 259 nodes (20489 simplex iterations) in 19.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556741756437e+05, best bound 7.555999634999e+05, gap 0.0098%