Build (method = -2) #dp: 19684 Step-3' Graph: 263 vertices and 782 arcs (0.13s) Step-4' Graph: 14 vertices and 284 arcs (0.13s) #V4/#V3 = 0.05 #A4/#A3 = 0.36 Ready! (0.13s) Optimize a model with 100 rows, 285 columns and 831 nonzeros Presolve removed 6 rows and 6 columns Presolve time: 0.00s Presolved: 94 rows, 279 columns, 815 nonzeros Variable types: 0 continuous, 279 integer (215 binary) Found heuristic solution: objective 89.0000000 Optimize a model with 94 rows, 279 columns and 815 nonzeros Presolved: 94 rows, 279 columns, 815 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.850e+02 Factor NZ : 7.850e+02 Factor Ops : 1.251e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.40444929e+02 -3.22754851e+02 1.98e+01 9.94e-03 1.78e+00 0s 1 7.15915573e+01 -5.41491653e+01 1.24e-12 6.66e-16 2.36e-01 0s 2 3.72750778e+01 2.55902425e+01 6.04e-14 2.86e-03 2.13e-02 0s 3 3.33584934e+01 3.32325427e+01 7.62e-13 1.60e-16 2.25e-04 0s 4 3.33333585e+01 3.33332307e+01 9.07e-14 3.33e-16 2.25e-07 0s 5 3.33333333e+01 3.33333333e+01 3.47e-14 7.12e-17 2.25e-13 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 3.33333333e+01 Root relaxation: objective 3.333333e+01, 188 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33.33333 0 5 89.00000 33.33333 62.5% - 0s H 0 0 34.0000000 33.33333 1.96% - 0s Explored 0 nodes (266 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0% Preprocessing time: 0.14 seconds Gurobi run time: 0.01 seconds Total run time: 0.15 seconds Objective: 34 Solution: 1 x [59, 73, 86] 1 x [70, 79, 85] 1 x [69, 84] 1 x [14, 66, 83] 1 x [54, 72, 82] 1 x [22, 22, 81] 1 x [34, 61, 80] 1 x [56, 56, 79] 1 x [47, 47, 79] 1 x [74, 78, 78] 1 x [57, 57, 77] 1 x [65, 65, 76] 1 x [49, 67, 75] 1 x [48, 63, 71] 1 x [1, 4, 69] 1 x [52, 68] 1 x [44, 62, 64] 1 x [41, 58, 60] 1 x [40, 51, 55] 1 x [38, 45, 53] 1 x [37, 43, 50] 1 x [35, 42, 46] 1 x [35, 36, 39] 1 x [32, 35, 35] 1 x [2, 7, 34] 1 x [29, 30, 33] 1 x [27, 28, 31] 1 x [23, 25, 26] 1 x [18, 21, 24] 1 x [16, 19, 20] 1 x [13, 15, 17] 1 x [3, 10, 14] 1 x [8, 9, 12] 1 x [5, 6, 11]