Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:30:59 2014 Optimize a model with 2401 rows, 2353 columns and 9264 nonzeros Presolve time: 0.05s Presolved: 2401 rows, 2353 columns, 9264 nonzeros Variable types: 1 continuous, 2352 integer (2352 binary) Found heuristic solution: objective 0.7648056 Found heuristic solution: objective 0.7602764 Found heuristic solution: objective 0.6761520 Root relaxation: objective 1.811479e-01, 1654 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.18115 0 456 0.67615 0.18115 73.2% - 0s H 0 0 0.3975409 0.18115 54.4% - 0s 0 0 0.18829 0 282 0.39754 0.18829 52.6% - 0s 0 0 0.18829 0 462 0.39754 0.18829 52.6% - 0s H 0 0 0.3899749 0.18829 51.7% - 0s 0 0 0.18897 0 327 0.38997 0.18897 51.5% - 0s 0 0 0.19492 0 341 0.38997 0.19492 50.0% - 0s H 0 0 0.3894365 0.19492 49.9% - 0s 0 0 0.20310 0 334 0.38944 0.20310 47.8% - 0s H 0 0 0.3790104 0.20310 46.4% - 0s H 0 0 0.3593027 0.20310 43.5% - 0s 0 0 0.20400 0 352 0.35930 0.20400 43.2% - 0s 0 0 0.20400 0 352 0.35930 0.20400 43.2% - 0s 0 0 0.20400 0 323 0.35930 0.20400 43.2% - 0s H 0 0 0.3581059 0.20400 43.0% - 0s H 0 0 0.3514159 0.20400 41.9% - 0s 0 2 0.20444 0 320 0.35142 0.20444 41.8% - 0s * 17 17 15 0.3488057 0.20708 40.6% 137 0s H 27 21 0.3474897 0.20708 40.4% 95.8 0s * 37 22 5 0.3313343 0.21129 36.2% 95.6 0s * 42 22 8 0.3175102 0.21129 33.5% 88.5 0s * 48 26 11 0.3128475 0.21129 32.5% 81.9 0s * 49 25 11 0.3114278 0.21129 32.2% 80.5 0s H 55 22 0.3006131 0.21229 29.4% 81.3 0s * 64 24 10 0.2947463 0.21229 28.0% 73.4 0s * 65 23 10 0.2946909 0.21229 28.0% 72.4 0s * 67 21 3 0.2920667 0.21251 27.2% 73.7 0s H 82 5 0.2780497 0.25937 6.72% 63.8 0s * 85 5 8 0.2694913 0.25937 3.76% 65.2 0s Cutting planes: Gomory: 2 MIR: 12 Explored 90 nodes (13420 simplex iterations) in 0.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.694912643684e-01, best bound 2.694912643684e-01, gap 0.0%