Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:35:47 2014 Optimize a model with 7261 rows, 3661 columns and 18000 nonzeros Presolve removed 60 rows and 0 columns Presolve time: 0.11s Presolved: 7201 rows, 3661 columns, 17940 nonzeros Variable types: 1 continuous, 3660 integer (3660 binary) Found heuristic solution: objective 1.1038826 Found heuristic solution: objective 1.0841487 Found heuristic solution: objective 0.7213510 Root relaxation: objective 7.453768e-03, 4566 iterations, 0.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00745 0 2731 0.72135 0.00745 99.0% - 0s H 0 0 0.4939475 0.00745 98.5% - 0s 0 0 0.01210 0 1608 0.49395 0.01210 97.6% - 1s 0 0 0.02609 0 1165 0.49395 0.02609 94.7% - 1s H 0 0 0.4105771 0.02609 93.6% - 2s 0 0 0.03892 0 722 0.41058 0.03892 90.5% - 2s 0 1 0.03892 0 721 0.41058 0.03892 90.5% - 5s H 1 1 0.4039997 0.03892 90.4% 1622 6s H 3 2 0.3827182 0.12363 67.7% 541 6s H 4 2 0.3816471 0.14960 60.8% 406 6s H 4 2 0.3481936 0.14960 57.0% 406 6s H 8 6 0.3205365 0.17315 46.0% 1182 8s 14 10 0.19642 0 442 0.32054 0.19642 38.7% 675 10s H 17 11 0.3008771 0.19753 34.3% 556 10s H 24 15 0.3003363 0.20121 33.0% 394 11s H 24 14 0.2953511 0.20121 31.9% 394 12s * 49 28 39 0.2949202 0.25510 13.5% 437 13s H 52 18 0.2801443 0.25510 8.94% 413 13s * 58 11 35 0.2753986 0.25510 7.37% 379 13s * 62 5 36 0.2748161 0.25510 7.17% 358 13s Cutting planes: Gomory: 4 MIR: 9 Explored 68 nodes (49785 simplex iterations) in 13.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.748160511501e-01, best bound 2.748160511501e-01, gap 0.0%