Gurobi 5.0.1 (linux64) logging started Sat Dec 8 03:27:28 2012 Optimize a model with 285 rows, 270 columns and 889 nonzeros Presolve removed 36 rows and 22 columns Presolve time: 0.00s Presolved: 249 rows, 248 columns, 799 nonzeros Variable types: 167 continuous, 81 integer (81 binary) Root relaxation: objective 2.802734e+04, 148 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28027.3420 0 47 - 28027.3420 - - 0s 0 0 32106.5859 0 23 - 32106.5859 - - 0s 0 0 32288.8532 0 24 - 32288.8532 - - 0s 0 0 32372.1390 0 26 - 32372.1390 - - 0s 0 0 32434.9581 0 25 - 32434.9581 - - 0s 0 0 32456.5497 0 28 - 32456.5497 - - 0s 0 2 32459.9156 0 28 - 32459.9156 - - 0s H 85 64 34372.000000 32517.6175 5.40% 9.5 0s H 85 64 34365.000000 32517.6175 5.38% 9.5 0s H 638 388 34059.000000 32767.0131 3.79% 9.6 3s H 665 379 34030.000000 32767.0131 3.71% 9.7 3s H 827 388 33947.000000 32767.0131 3.48% 9.9 4s H 881 365 33760.000000 32767.0131 2.94% 10.0 4s 907 372 33067.6071 27 20 33760.0000 32767.0131 2.94% 10.1 5s 1598 464 33383.4798 30 18 33760.0000 32950.9109 2.40% 10.8 10s 2116 609 33306.9303 25 18 33760.0000 33039.0680 2.14% 11.0 15s 2210 640 33052.9224 26 33 33760.0000 33052.9224 2.09% 11.5 20s 2516 680 cutoff 43 33760.0000 33052.9224 2.09% 11.7 25s 2982 688 33667.7067 35 22 33760.0000 33167.7822 1.75% 11.6 30s 3408 676 33575.7951 36 12 33760.0000 33242.9447 1.53% 11.4 35s 3803 673 33444.2257 29 26 33760.0000 33304.4244 1.35% 11.1 40s 4154 640 33717.0096 44 10 33760.0000 33350.5535 1.21% 11.0 45s 4539 666 33603.5250 35 15 33760.0000 33390.8944 1.09% 10.9 50s 4951 723 33722.9911 32 25 33760.0000 33434.3849 0.96% 10.7 55s 5331 726 33528.8908 43 11 33760.0000 33458.1937 0.89% 10.6 60s 5695 703 33620.5051 37 15 33760.0000 33490.4246 0.80% 10.5 65s 6054 664 33686.7204 39 14 33760.0000 33524.6154 0.70% 10.4 70s 6447 577 33607.3525 42 15 33760.0000 33556.5259 0.60% 10.3 75s 6822 499 33594.0258 38 18 33760.0000 33592.1900 0.50% 10.1 80s 7182 372 33738.1876 48 12 33760.0000 33631.0999 0.38% 10.0 85s 7551 194 33726.4221 52 9 33760.0000 33677.9233 0.24% 9.7 90s Cutting planes: Gomory: 3 Flow cover: 9 Flow path: 2 Explored 7796 nodes (74726 simplex iterations) in 93.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.375999999999e+04, best bound 3.375999999999e+04, gap 0.0%