Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:29:40 2012 Optimize a model with 902 rows, 840 columns and 3540 nonzeros Presolve removed 232 rows and 40 columns Presolve time: 0.03s Presolved: 670 rows, 800 columns, 3214 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 1.542245e+02, 662 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 154.22448 0 47 - 154.22448 - - 0s 0 0 159.68897 0 57 - 159.68897 - - 0s 0 0 173.26671 0 45 - 173.26671 - - 0s 0 0 178.88033 0 48 - 178.88033 - - 0s 0 0 180.22793 0 49 - 180.22793 - - 0s 0 0 180.78626 0 47 - 180.78626 - - 0s 0 0 180.82821 0 46 - 180.82821 - - 0s 0 0 180.86661 0 50 - 180.86661 - - 0s 0 0 180.86661 0 50 - 180.86661 - - 0s 0 0 180.86661 0 50 - 180.86661 - - 0s 0 2 181.00003 0 50 - 181.00003 - - 0s 1843 764 318.23320 65 8 - 230.62132 - 52.4 5s H 2716 1206 342.0000000 233.28163 31.8% 51.4 6s H 2797 1242 337.0000000 233.68151 30.7% 51.0 6s H 2825 669 276.0000000 233.71878 15.3% 50.8 6s H 3099 712 271.0000000 235.05956 13.3% 51.4 8s * 3247 697 44 265.0000000 235.05956 11.3% 51.3 9s 3472 685 246.88358 39 42 265.00000 235.58417 11.1% 50.5 10s Cutting planes: Gomory: 5 Cover: 2 Implied bound: 6 Flow cover: 15 GUB cover: 5 Zero half: 1 Explored 5533 nodes (244334 simplex iterations) in 12.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.650000000000e+02, best bound 2.650000000000e+02, gap 0.0%