Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:35:20 2014 Optimize a model with 7022 rows, 3541 columns and 17405 nonzeros Presolve removed 59 rows and 0 columns Presolve time: 0.13s Presolved: 6963 rows, 3541 columns, 17346 nonzeros Variable types: 1 continuous, 3540 integer (3540 binary) Found heuristic solution: objective 1.0210160 Found heuristic solution: objective 0.9439109 Found heuristic solution: objective 0.7089660 Root relaxation: objective 7.031732e-03, 4068 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00703 0 2656 0.70897 0.00703 99.0% - 0s H 0 0 0.4717281 0.00703 98.5% - 0s 0 0 0.01257 0 1427 0.47173 0.01257 97.3% - 1s 0 0 0.03192 0 829 0.47173 0.03192 93.2% - 1s H 0 0 0.4186138 0.03192 92.4% - 1s H 0 0 0.3831263 0.03192 91.7% - 1s 0 0 0.05536 0 449 0.38313 0.05536 85.6% - 2s H 0 0 0.3684474 0.05536 85.0% - 2s 0 1 0.05536 0 449 0.36845 0.05536 85.0% - 3s H 1 1 0.3318512 0.05536 83.3% 1182 3s H 6 4 0.2849362 0.17994 36.8% 197 4s 9 6 0.19730 0 293 0.28494 0.19730 30.8% 131 5s H 9 6 0.2756046 0.19904 27.8% 131 5s H 13 7 0.2625597 0.24701 5.92% 615 5s Cutting planes: Gomory: 1 Implied bound: 1 MIR: 20 Explored 13 nodes (30864 simplex iterations) in 5.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.625596949031e-01, best bound 2.625596949031e-01, gap 0.0%