Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:29:27 2012 Optimize a model with 902 rows, 840 columns and 3560 nonzeros Presolve removed 213 rows and 40 columns Presolve time: 0.03s Presolved: 689 rows, 800 columns, 3253 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 1.635293e+02, 699 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 163.52927 0 36 - 163.52927 - - 0s 0 0 167.98175 0 41 - 167.98175 - - 0s 0 0 182.22473 0 39 - 182.22473 - - 0s 0 0 188.91729 0 43 - 188.91729 - - 0s 0 0 197.37571 0 46 - 197.37571 - - 0s 0 0 198.48240 0 50 - 198.48240 - - 0s 0 0 198.67069 0 47 - 198.67069 - - 0s 0 0 198.69551 0 53 - 198.69551 - - 0s 0 0 202.27554 0 44 - 202.27554 - - 0s 0 0 202.71061 0 39 - 202.71061 - - 0s 0 0 202.87911 0 33 - 202.87911 - - 0s 0 0 203.61244 0 41 - 203.61244 - - 0s 0 0 203.61244 0 41 - 203.61244 - - 0s 0 0 203.61244 0 41 - 203.61244 - - 0s 0 0 203.61244 0 41 - 203.61244 - - 0s 0 2 204.91070 0 39 - 204.91070 - - 0s H 609 436 303.0000000 211.81221 30.1% 27.6 1s H 617 420 290.0000000 211.81221 27.0% 27.3 1s H 645 411 286.0000000 211.81221 25.9% 33.3 2s H 768 418 284.0000000 215.29393 24.2% 39.3 2s H 1124 471 279.0000000 224.12993 19.7% 38.6 3s * 1344 393 26 253.0000000 225.27576 11.0% 37.6 3s 1524 379 233.56596 31 38 253.00000 227.02026 10.3% 38.6 5s Cutting planes: Gomory: 6 Cover: 6 Implied bound: 7 Flow cover: 23 GUB cover: 3 Explored 5731 nodes (161241 simplex iterations) in 9.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.530000000000e+02, best bound 2.530000000000e+02, gap 0.0%