Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:46:15 2013 Optimize a model with 814 rows, 54834 columns and 109594 nonzeros Presolve time: 0.08s Presolved: 814 rows, 54834 columns, 109594 nonzeros Variable types: 54760 continuous, 74 integer (74 binary) Root relaxation: objective 8.416174e+04, 1927 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 84161.7418 0 5 - 84161.7418 - - 0s H 0 0 90908.000000 84161.7418 7.42% - 0s 0 0 84288.6485 0 4 90908.0000 84288.6485 7.28% - 0s H 0 0 90465.000000 84288.6485 6.83% - 0s 0 0 84304.7580 0 4 90465.0000 84304.7580 6.81% - 0s H 0 0 90286.000000 84304.7580 6.62% - 0s 0 0 84305.2449 0 5 90286.0000 84305.2449 6.62% - 0s 0 0 84314.9499 0 4 90286.0000 84314.9499 6.61% - 0s H 0 0 89112.000000 84314.9499 5.38% - 0s 0 0 84315.0424 0 4 89112.0000 84315.0424 5.38% - 0s H 0 0 89094.000000 84315.0424 5.36% - 0s 0 0 84315.0424 0 4 89094.0000 84315.0424 5.36% - 0s 0 0 84315.0424 0 4 89094.0000 84315.0424 5.36% - 0s H 0 0 88464.000000 84315.0424 4.69% - 1s 0 2 84323.1674 0 4 88464.0000 84323.1674 4.68% - 1s H 2 2 88446.267575 84349.7878 4.63% 22.0 1s H 3 3 88395.973458 84357.0968 4.57% 24.0 1s H 6 6 86625.454545 84371.6084 2.60% 23.2 1s H 9 9 84896.818182 84386.5711 0.60% 23.3 1s H 10 7 84610.333333 84386.5711 0.26% 21.9 1s H 12 8 84608.000000 84386.5711 0.26% 23.2 1s H 14 9 84594.000000 84386.5711 0.25% 24.5 1s * 15 9 13 84492.000000 84386.5711 0.12% 26.7 1s * 21 5 12 84483.000000 84421.3007 0.07% 24.5 1s Cutting planes: Implied bound: 46 Flow cover: 8 Explored 27 nodes (2841 simplex iterations) in 1.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.448300000000e+04, best bound 8.448300000000e+04, gap 0.0%