Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:49:46 2013 Optimize a model with 1700 rows, 128000 columns and 1351050 nonzeros Presolve removed 50 rows and 2450 columns Presolve time: 3.41s Presolved: 1650 rows, 125550 columns, 1251050 nonzeros Variable types: 125050 continuous, 500 integer (500 binary) Root relaxation: objective 1.626233e+05, 2811 iterations, 0.28 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 40 - 162623.326 - - 4s 0 0 162625.513 0 40 - 162625.513 - - 5s 0 0 162625.854 0 40 - 162625.854 - - 6s 0 0 162626.053 0 40 - 162626.053 - - 6s 0 0 162626.053 0 40 - 162626.053 - - 7s 0 0 162626.105 0 40 - 162626.105 - - 7s 0 0 162626.105 0 40 - 162626.105 - - 8s 0 0 162626.116 0 40 - 162626.116 - - 9s 0 0 162626.283 0 40 - 162626.283 - - 9s 0 0 162626.283 0 40 - 162626.283 - - 10s 0 0 162626.283 0 40 - 162626.283 - - 11s 0 0 162626.283 0 40 - 162626.283 - - 11s 0 0 162626.283 0 40 - 162626.283 - - 12s 0 0 162626.283 0 40 - 162626.283 - - 13s 0 0 162626.283 0 40 - 162626.283 - - 14s 0 2 162628.532 0 40 - 162628.532 - - 29s 3 5 162639.927 2 31 - 162634.225 - 189 30s 76 78 163541.157 58 2 - 162634.225 - 25.9 35s 175 177 163690.152 143 8 - 162634.225 - 13.9 40s * 237 171 201 163701.30454 162634.225 0.65% 10.7 41s 296 218 163552.736 52 8 163701.305 162645.872 0.64% 12.5 45s 362 258 163615.143 110 4 163701.305 162645.872 0.64% 11.8 50s * 363 161 111 163615.19691 162645.872 0.59% 11.7 50s H 409 95 163373.24079 162647.168 0.44% 12.3 51s 601 271 162947.447 66 40 163373.241 162659.953 0.44% 9.9 61s 607 275 162987.242 121 32 163373.241 162659.953 0.44% 9.8 65s 613 280 162770.939 13 24 163373.241 162770.939 0.37% 20.2 70s H 639 263 162938.58404 162812.427 0.08% 20.6 75s * 649 246 36 162918.21321 162812.427 0.06% 20.3 75s Cutting planes: Flow cover: 10 Explored 673 nodes (21202 simplex iterations) in 77.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629182132127e+05, best bound 1.629023939675e+05, gap 0.0097%