Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:04:15 2014 Optimize a model with 13689 rows, 13573 columns and 53940 nonzeros Presolve time: 0.24s Presolved: 13689 rows, 13573 columns, 53940 nonzeros Variable types: 1 continuous, 13572 integer (13572 binary) Found heuristic solution: objective 0.9732203 Found heuristic solution: objective 0.9715189 Found heuristic solution: objective 0.9228192 Root relaxation: objective 1.161158e-01, 5320 iterations, 0.72 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.11612 0 1085 0.92282 0.11612 87.4% - 1s H 0 0 0.5335680 0.11612 78.2% - 1s H 0 0 0.1954257 0.11612 40.6% - 2s 0 0 0.13102 0 666 0.19543 0.13102 33.0% - 3s 0 0 0.13102 0 654 0.19543 0.13102 33.0% - 3s 0 0 0.13849 0 592 0.19543 0.13849 29.1% - 3s 0 0 0.14855 0 579 0.19543 0.14855 24.0% - 4s 0 0 0.14860 0 650 0.19543 0.14860 24.0% - 4s 0 0 0.14868 0 570 0.19543 0.14868 23.9% - 4s 0 0 0.14868 0 581 0.19543 0.14868 23.9% - 4s 0 0 0.15761 0 369 0.19543 0.15761 19.4% - 4s 0 0 0.15913 0 371 0.19543 0.15913 18.6% - 4s 0 0 0.15913 0 371 0.19543 0.15913 18.6% - 4s H 0 0 0.1931402 0.15913 17.6% - 4s 0 2 0.15913 0 246 0.19314 0.15913 17.6% - 5s H 32 22 0.1926982 0.15933 17.3% 258 5s H 32 22 0.1923795 0.15933 17.2% 258 5s H 32 22 0.1923470 0.15933 17.2% 258 5s * 37 15 23 0.1884611 0.15933 15.5% 224 5s H 54 24 0.1876378 0.16860 10.1% 186 5s * 58 21 13 0.1844558 0.16860 8.60% 175 5s * 64 16 5 0.1842386 0.16923 8.15% 164 5s Cutting planes: Gomory: 2 Implied bound: 2 MIR: 25 Explored 81 nodes (50301 simplex iterations) in 5.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.842385853044e-01, best bound 1.842385853044e-01, gap 0.0%