Optimize a model with 144 rows, 10296 columns and 20592 nonzeros Presolve time: 0.02s Presolved: 144 rows, 10296 columns, 20592 nonzeros Variable types: 0 continuous, 10296 integer (10296 binary) Root relaxation: objective 3.277600e+04, 172 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 32776.0000 0 36 - 32776.0000 - - 0s 0 0 32792.0000 0 36 - 32792.0000 - - 0s 0 0 33063.3333 0 84 - 33063.3333 - - 0s 0 0 33250.0000 0 68 - 33250.0000 - - 0s 0 0 33266.0000 0 72 - 33266.0000 - - 0s 0 0 33304.5000 0 88 - 33304.5000 - - 0s 0 0 33329.0000 0 84 - 33329.0000 - - 0s 0 0 33358.6667 0 80 - 33358.6667 - - 0s 0 0 33361.6667 0 92 - 33361.6667 - - 0s 0 0 33361.6667 0 92 - 33361.6667 - - 0s 0 2 33377.0833 0 92 - 33377.0833 - - 0s * 38 38 25 59909.000000 55412.5000 7.51% 18.2 1s * 43 34 25 59892.000000 55412.5000 7.48% 16.5 1s * 81 66 31 59836.000000 55510.0000 7.23% 11.4 1s * 88 65 32 59807.000000 55510.0000 7.18% 10.7 2s * 164 94 28 59128.000000 56781.5000 3.97% 9.2 3s * 253 67 37 58763.000000 58224.7500 0.92% 8.6 4s * 263 30 13 58537.000000 58239.7500 0.51% 8.6 4s 269 28 cutoff 5 58537.0000 58288.0000 0.43% 8.6 5s Cutting planes: User: 106 Zero half: 34 Explored 316 nodes (2849 simplex iterations) in 5.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.853700000000e+04, best bound 5.853700000000e+04, gap 0.0% Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:44:59 2012