Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:28:59 2014 Optimize a model with 3241 rows, 1641 columns and 8000 nonzeros Presolve removed 40 rows and 0 columns Presolve time: 0.12s Presolved: 3201 rows, 1641 columns, 7960 nonzeros Variable types: 1 continuous, 1640 integer (1640 binary) Found heuristic solution: objective 0.6492119 Found heuristic solution: objective 0.6338395 Root relaxation: objective 1.392323e-02, 2071 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.01392 0 1060 0.63384 0.01392 97.8% - 0s H 0 0 0.5145787 0.01392 97.3% - 0s 0 0 0.02268 0 672 0.51458 0.02268 95.6% - 0s 0 0 0.13042 0 270 0.51458 0.13042 74.7% - 0s H 0 0 0.5103275 0.13042 74.4% - 0s 0 0 0.15480 0 267 0.51033 0.15480 69.7% - 0s H 0 0 0.5008519 0.15480 69.1% - 0s 0 0 0.17597 0 230 0.50085 0.17597 64.9% - 0s 0 0 0.19995 0 213 0.50085 0.19995 60.1% - 0s 0 0 0.20195 0 191 0.50085 0.20195 59.7% - 0s 0 0 0.20219 0 202 0.50085 0.20219 59.6% - 0s H 0 0 0.4416754 0.20219 54.2% - 0s 0 0 0.21167 0 275 0.44168 0.21167 52.1% - 0s 0 0 0.21207 0 304 0.44168 0.21207 52.0% - 0s 0 0 0.21207 0 308 0.44168 0.21207 52.0% - 1s 0 0 0.21207 0 266 0.44168 0.21207 52.0% - 1s 0 0 0.21207 0 270 0.44168 0.21207 52.0% - 1s 0 0 0.21207 0 270 0.44168 0.21207 52.0% - 1s H 0 0 0.4279806 0.21207 50.4% - 1s H 0 0 0.4273129 0.21207 50.4% - 1s 0 2 0.21586 0 213 0.42731 0.21586 49.5% - 1s * 26 26 16 0.4115093 0.23697 42.4% 194 1s * 28 23 16 0.3823392 0.23697 38.0% 180 1s * 29 20 16 0.3818033 0.23697 37.9% 174 1s H 30 19 0.3757380 0.23697 36.9% 168 1s * 32 21 4 0.3691199 0.23796 35.5% 169 1s * 37 21 9 0.3339809 0.23796 28.8% 148 1s * 42 16 4 0.3309952 0.26796 19.0% 139 1s * 52 17 8 0.3224950 0.26841 16.8% 123 1s * 55 16 7 0.3221876 0.26841 16.7% 117 1s * 56 13 7 0.3211844 0.26841 16.4% 114 1s Cutting planes: Gomory: 13 MIR: 1 Explored 70 nodes (21630 simplex iterations) in 1.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.211844284365e-01, best bound 3.211844284365e-01, gap 0.0%