Build (method = -2) #dp: 1740 Step-3' Graph: 44 vertices and 319 arcs (0.01s) Step-4' Graph: 32 vertices and 295 arcs (0.01s) #V4/#V3 = 0.73 #A4/#A3 = 0.92 Ready! (0.01s) Optimize a model with 92 rows, 296 columns and 830 nonzeros Presolve removed 32 rows and 34 columns Presolve time: 0.00s Presolved: 60 rows, 262 columns, 733 nonzeros Variable types: 0 continuous, 262 integer (6 binary) Found heuristic solution: objective 1074.0000000 Found heuristic solution: objective 834.0000000 Optimize a model with 60 rows, 262 columns and 733 nonzeros Presolved: 60 rows, 262 columns, 733 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.100e+02 Factor NZ : 1.023e+03 Factor Ops : 2.141e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.03300085e+04 -1.16783466e+04 1.29e+04 1.43e-01 1.72e+02 0s 1 2.76933127e+03 -3.63565577e+03 1.95e+03 4.44e-16 2.89e+01 0s 2 8.84175611e+02 -8.84569421e+02 9.08e+01 5.55e-16 3.75e+00 0s 3 6.50469853e+02 2.16451342e+02 1.04e+01 8.88e-16 8.06e-01 0s 4 5.47972860e+02 4.19622568e+02 1.48e+00 6.97e-16 2.33e-01 0s 5 5.32932861e+02 4.93100653e+02 6.76e-01 5.72e-16 7.23e-02 0s 6 5.25746364e+02 5.12736874e+02 1.37e-01 4.80e-16 2.35e-02 0s 7 5.23627214e+02 5.22849608e+02 5.05e-03 6.83e-16 1.41e-03 0s 8 5.23500132e+02 5.23499351e+02 2.98e-13 5.55e-16 1.41e-06 0s 9 5.23500000e+02 5.23500000e+02 3.40e-13 8.88e-16 1.41e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 5.23500000e+02 Root relaxation: objective 5.235000e+02, 148 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 523.50000 0 2 834.00000 523.50000 37.2% - 0s H 0 0 524.0000000 523.50000 0.10% - 0s Explored 0 nodes (188 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.240000000000e+02, best bound 5.240000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 524 Solution: 1 x [60] 1 x [54, 60] 8 x [21, 60] 4 x [12] 23 x [12, 28, 54] 34 x [44] 5 x [6] 1 x [13] 5 x [53] 3 x [20, 20, 53] 26 x [22, 53] 16 x [42] 7 x [23] 1 x [16, 23, 37] 21 x [11, 21, 23] 3 x [24] 20 x [1, 24, 37] 3 x [21, 24] 7 x [18, 40] 4 x [18, 59] 3 x [17, 41] 12 x [4, 41] 10 x [5, 39, 48] 5 x [9, 27] 1 x [9, 26] 7 x [14, 45, 48] 1 x [5, 14, 48] 12 x [14, 34] 2 x [7, 58] 18 x [56, 58] 8 x [34, 58] 13 x [7, 51] 6 x [38, 57] 8 x [38, 52] 1 x [38, 49] 16 x [31, 52] 20 x [10, 57] 1 x [2, 49] 9 x [25, 43] 23 x [3, 36] 3 x [25, 30] 3 x [15, 25] 30 x [15, 49] 21 x [33, 50] 28 x [29, 46] 1 x [19, 46] 5 x [19, 37, 50] 3 x [19, 49, 54] 9 x [7, 19] 3 x [18, 19, 47] 30 x [35, 55] 4 x [32, 55] 5 x [8, 35] 1 x [8] 9 x [18, 34, 56]