Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:52:41 2013 Optimize a model with 1700 rows, 128000 columns and 1351050 nonzeros Presolve removed 50 rows and 2450 columns Presolve time: 4.18s Presolved: 1650 rows, 125550 columns, 1251050 nonzeros Variable types: 125050 continuous, 500 integer (500 binary) Root relaxation: objective 1.650739e+05, 2965 iterations, 0.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 165073.856 0 16 - 165073.856 - - 5s 0 0 165075.216 0 16 - 165075.216 - - 6s 0 0 165075.669 0 16 - 165075.669 - - 7s 0 0 165075.669 0 16 - 165075.669 - - 8s 0 0 165075.669 0 16 - 165075.669 - - 8s 0 0 165075.669 0 16 - 165075.669 - - 9s 0 0 165075.669 0 16 - 165075.669 - - 10s 0 0 165075.669 0 16 - 165075.669 - - 11s 0 0 165075.669 0 16 - 165075.669 - - 13s 0 2 165075.912 0 16 - 165075.912 - - 29s 5 7 165110.195 5 13 - 165102.030 - 79.0 30s 57 59 165637.225 49 9 - 165102.030 - 15.6 35s 126 128 165662.861 113 8 - 165102.030 - 9.2 40s * 158 96 145 165667.05768 165102.030 0.34% 7.6 41s H 187 57 165638.66227 165127.786 0.31% 8.2 44s 195 61 165627.745 36 8 165638.662 165127.786 0.31% 8.2 45s 233 73 165633.996 74 2 165638.662 165127.786 0.31% 8.4 50s * 243 70 84 165637.23688 165127.786 0.31% 8.3 51s 349 123 165556.940 17 8 165637.237 165492.711 0.09% 8.9 55s * 413 133 30 165634.23474 165499.730 0.08% 8.8 56s * 416 126 31 165634.04907 165499.730 0.08% 8.8 56s * 417 122 31 165633.98039 165499.730 0.08% 8.8 56s 527 135 165588.801 17 8 165633.980 165512.309 0.07% 8.1 60s 601 150 165631.949 31 16 165633.980 165541.128 0.06% 8.0 69s 603 151 165632.711 44 8 165633.980 165541.128 0.06% 7.9 71s 607 154 165603.027 19 8 165633.980 165541.128 0.06% 7.9 75s Cutting planes: Flow cover: 2 Explored 614 nodes (14607 simplex iterations) in 78.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.656339803860e+05, best bound 1.656216358195e+05, gap 0.0075%