Gurobi 5.0.1 (linux64) logging started Sun Dec 9 10:43:17 2012 Optimize a model with 3000 rows, 2970 columns and 11336 nonzeros Presolve removed 136 rows and 17 columns Presolve time: 0.02s Presolved: 2864 rows, 2953 columns, 11108 nonzeros Variable types: 2777 continuous, 176 integer (176 binary) Root relaxation: objective 6.452769e+04, 364 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 64527.6854 0 35 - 64527.6854 - - 0s H 0 0 70634.000000 64527.6854 8.65% - 0s H 0 0 69959.000000 64527.6854 7.76% - 0s 0 0 64659.7841 0 51 69959.0000 64659.7841 7.57% - 0s 0 0 64668.4452 0 54 69959.0000 64668.4452 7.56% - 0s 0 0 64685.7261 0 55 69959.0000 64685.7261 7.54% - 0s 0 0 64691.3595 0 59 69959.0000 64691.3595 7.53% - 0s 0 0 64691.6476 0 57 69959.0000 64691.6476 7.53% - 0s H 0 0 67016.000000 64691.6476 3.47% - 0s 0 2 64717.0065 0 57 67016.0000 64717.0065 3.43% - 0s H 108 57 66185.000000 64848.1048 2.02% 8.2 0s H 135 62 65851.000000 64848.1048 1.52% 7.4 0s H 781 367 65688.000000 65003.4952 1.04% 9.9 2s H 1739 508 65685.000000 65169.1788 0.79% 11.1 4s H 1847 522 65661.000000 65192.5931 0.71% 11.1 4s 2236 666 65636.4386 28 32 65661.0000 65233.4029 0.65% 11.2 5s 6347 1510 65533.9036 24 41 65661.0000 65421.5506 0.36% 10.8 10s 11351 802 cutoff 38 65661.0000 65585.9362 0.11% 9.9 15s Cutting planes: Gomory: 9 Cover: 3 Flow cover: 22 Explored 12436 nodes (117253 simplex iterations) in 15.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.566100000000e+04, best bound 6.565470426954e+04, gap 0.0096%