Build (method = -2) #dp: 1130 Step-3' Graph: 50 vertices and 442 arcs (0.00s) Step-4' Graph: 45 vertices and 432 arcs (0.00s) #V4/#V3 = 0.90 #A4/#A3 = 0.98 Ready! (0.00s) Optimize a model with 105 rows, 433 columns and 1214 nonzeros Presolve removed 43 rows and 50 columns Presolve time: 0.01s Presolved: 62 rows, 383 columns, 1078 nonzeros Variable types: 0 continuous, 383 integer (111 binary) Found heuristic solution: objective 83.0000000 Found heuristic solution: objective 80.0000000 Optimize a model with 62 rows, 383 columns and 1078 nonzeros Presolved: 62 rows, 383 columns, 1078 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.550e+02 Factor NZ : 1.283e+03 Factor Ops : 3.323e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.40607203e+02 -1.39203231e+03 2.35e+03 1.63e-01 1.64e+01 0s 1 2.42032239e+02 -4.89501806e+02 3.36e+02 5.55e-16 2.74e+00 0s 2 1.03425315e+02 -9.53226432e+01 2.82e+01 8.88e-16 3.61e-01 0s 3 7.74854031e+01 2.19204196e+01 2.31e+00 2.50e-16 7.63e-02 0s 4 6.94435272e+01 4.67605131e+01 3.52e-01 2.22e-16 2.95e-02 0s 5 6.50378399e+01 5.74677051e+01 7.32e-02 2.22e-16 9.77e-03 0s 6 6.38561015e+01 6.17615732e+01 2.97e-02 2.22e-16 2.71e-03 0s 7 6.34718158e+01 6.22270585e+01 4.91e-03 2.22e-16 1.60e-03 0s 8 6.32758648e+01 6.30267455e+01 1.75e-04 2.22e-16 3.19e-04 0s 9 6.32507464e+01 6.32467460e+01 5.91e-06 3.33e-16 5.13e-06 0s 10 6.32500008e+01 6.32499967e+01 1.99e-11 2.42e-16 5.13e-09 0s 11 6.32500000e+01 6.32500000e+01 2.47e-13 2.22e-16 5.13e-12 0s Barrier solved model in 11 iterations and 0.00 seconds Optimal objective 6.32500000e+01 Root relaxation: objective 6.325000e+01, 104 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 63.25000 0 5 80.00000 63.25000 20.9% - 0s H 0 0 64.0000000 63.25000 1.17% - 0s Explored 0 nodes (189 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.400000000000e+01, best bound 6.400000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 64 Solution: 2 x [60] 3 x [59] 1 x [58] 1 x [57] 2 x [56] 3 x [55] 2 x [54] 3 x [53] 2 x [52] 1 x [51] 2 x [50] 2 x [49] 1 x [48] 1 x [47] 2 x [46] 1 x [1, 45] 1 x [2, 44] 1 x [3, 43] 1 x [1, 43] 1 x [5, 42] 2 x [4, 41] 1 x [6, 40] 2 x [9, 39] 2 x [7, 38] 2 x [11, 37] 1 x [10, 36] 1 x [12, 35] 1 x [12, 34] 1 x [8, 33] 2 x [13, 32] 1 x [31] 1 x [15, 30] 2 x [14, 29] 1 x [15, 28] 1 x [18, 27] 1 x [17, 27] 1 x [16, 27] 1 x [18, 26] 1 x [19, 25] 1 x [20, 24] 1 x [22, 23] 1 x [21, 23] 1 x [4, 8, 20] 1 x [19, 19] 1 x [6, 6]