Gurobi 5.0.1 (linux64) logging started Sat Dec 8 10:25:04 2012 Optimize a model with 1095 rows, 1080 columns and 3559 nonzeros Presolve removed 96 rows and 61 columns Presolve time: 0.01s Presolved: 999 rows, 1019 columns, 3328 nonzeros Variable types: 681 continuous, 338 integer (338 binary) Root relaxation: objective 9.798915e+04, 502 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 97989.1461 0 167 - 97989.1461 - - 0s H 0 0 158573.00000 97989.1461 38.2% - 0s H 0 0 158213.00000 97989.1461 38.1% - 0s 0 0 119880.931 0 21 158213.000 119880.931 24.2% - 0s 0 0 120578.739 0 19 158213.000 120578.739 23.8% - 0s 0 0 120716.895 0 11 158213.000 120716.895 23.7% - 0s 0 0 120732.726 0 15 158213.000 120732.726 23.7% - 0s H 0 0 121266.00000 120732.726 0.44% - 0s 0 2 120732.748 0 15 121266.000 120732.748 0.44% - 0s * 10 10 8 120863.00000 120734.386 0.11% 5.2 0s * 11 9 7 120850.00000 120734.386 0.10% 4.9 0s * 35 17 9 120842.00000 120740.372 0.08% 3.7 1s * 36 14 8 120829.00000 120740.372 0.07% 3.7 1s * 54 16 5 120825.00000 120750.391 0.06% 3.6 1s * 69 8 4 120786.00000 120751.047 0.03% 3.6 1s Cutting planes: Gomory: 17 Cover: 1 Implied bound: 1 Flow cover: 126 Flow path: 66 Explored 99 nodes (1076 simplex iterations) in 2.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.207860000000e+05, best bound 1.207800746071e+05, gap 0.0049%