Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:28:41 2013 Optimize a model with 869 rows, 62489 columns and 124899 nonzeros Presolve time: 0.09s Presolved: 869 rows, 62489 columns, 124899 nonzeros Variable types: 62410 continuous, 79 integer (79 binary) Root relaxation: objective 8.098495e+04, 2112 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 80984.9457 0 8 - 80984.9457 - - 0s H 0 0 87947.000000 80984.9457 7.92% - 0s 0 0 81322.9044 0 4 87947.0000 81322.9044 7.53% - 0s H 0 0 87821.884608 81322.9044 7.40% - 0s H 0 0 87299.000000 81322.9044 6.85% - 0s 0 0 81385.1406 0 5 87299.0000 81385.1406 6.77% - 0s H 0 0 86378.000000 81385.1406 5.78% - 0s 0 0 81396.6033 0 4 86378.0000 81396.6033 5.77% - 0s H 0 0 86144.000000 81396.6033 5.51% - 0s 0 0 81406.0703 0 4 86144.0000 81406.0703 5.50% - 0s H 0 0 86008.000000 81406.0703 5.35% - 0s 0 0 81407.7424 0 4 86008.0000 81407.7424 5.35% - 0s 0 0 81409.1430 0 4 86008.0000 81409.1430 5.35% - 1s H 0 0 85916.000000 81409.1430 5.25% - 1s 0 0 81409.1430 0 4 85916.0000 81409.1430 5.25% - 1s 0 0 81409.8414 0 4 85916.0000 81409.8414 5.24% - 1s 0 0 81409.8414 0 4 85916.0000 81409.8414 5.24% - 1s 0 2 81418.3403 0 4 85916.0000 81418.3403 5.23% - 1s H 3 3 85074.073157 81562.3474 4.13% 95.0 2s H 4 4 82678.000000 81570.4823 1.34% 84.5 2s H 9 8 82595.000000 81570.4823 1.24% 49.9 2s H 10 8 81997.000000 81570.4823 0.52% 45.9 2s * 13 7 12 81905.000000 81570.4823 0.41% 46.5 2s H 14 6 81850.202703 81570.4823 0.34% 43.2 2s * 15 5 13 81765.000000 81570.4823 0.24% 43.4 2s H 30 2 81734.000000 81619.0000 0.14% 53.8 2s Cutting planes: Implied bound: 141 Flow cover: 11 Explored 38 nodes (4567 simplex iterations) in 2.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.173400000000e+04, best bound 8.173400000000e+04, gap 0.0%