Build (method = -2) #dp: 1992 Step-3' Graph: 85 vertices and 265 arcs (0.01s) Step-4' Graph: 19 vertices and 133 arcs (0.01s) #V4/#V3 = 0.22 #A4/#A3 = 0.50 Ready! (0.01s) Optimize a model with 80 rows, 134 columns and 369 nonzeros Presolve removed 37 rows and 42 columns Presolve time: 0.00s Presolved: 43 rows, 92 columns, 244 nonzeros Variable types: 0 continuous, 92 integer (8 binary) Found heuristic solution: objective 102.0000000 Found heuristic solution: objective 76.0000000 Optimize a model with 43 rows, 92 columns and 244 nonzeros Presolved: 43 rows, 92 columns, 244 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.300e+01 Factor NZ : 5.320e+02 Factor Ops : 1.052e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.59348582e+03 -1.23449889e+03 7.96e+01 1.11e-16 4.92e+01 0s 1 3.83005618e+02 -4.54707323e+02 1.10e+01 6.66e-16 7.77e+00 0s 2 8.81756953e+01 -6.41291947e+01 3.46e-14 9.99e-16 7.25e-01 0s 3 6.80567732e+01 2.82148683e+01 6.51e-14 3.43e-16 1.90e-01 0s 4 6.02161445e+01 5.78648229e+01 5.06e-14 3.33e-16 1.12e-02 0s 5 6.00000767e+01 5.99996042e+01 4.04e-13 3.33e-16 2.25e-06 0s 6 6.00000000e+01 6.00000000e+01 4.62e-14 3.33e-16 2.31e-12 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 6.00000000e+01 Root relaxation: objective 6.000000e+01, 46 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 60.0000000 60.00000 0.0% - 0s Explored 0 nodes (46 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.000000000000e+01, best bound 6.000000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 60 Solution: 2 x [22, 61] 1 x [25, 60] 1 x [16, 59] 4 x [10, 58] 1 x [8, 57] 1 x [5, 56] 2 x [18, 55] 3 x [30, 54] 1 x [4, 53] 3 x [32, 52] 2 x [13, 51] 1 x [34, 50] 1 x [35, 49] 2 x [29, 49] 1 x [1, 48] 3 x [36, 47] 1 x [38, 46] 2 x [39, 45] 2 x [12, 44] 3 x [40, 43] 2 x [6, 43] 1 x [37, 42] 1 x [1, 41] 1 x [3, 33] 2 x [15, 31] 1 x [4, 30] 1 x [14, 28] 3 x [2, 27] 1 x [24, 26] 3 x [11, 23] 2 x [17, 21] 2 x [9, 20] 3 x [7, 19]