
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:14:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4081.40.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo4081.40.lp
Reading time = 0.22 seconds
: 139532 rows, 1904 columns, 420021 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 139532 rows, 1904 columns and 420021 nonzeros
Model fingerprint: 0x4011c933
Variable types: 40 continuous, 1864 integer (1864 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 54332 rows and 19 columns
Presolve time: 1.02s
Presolved: 85200 rows, 1885 columns, 257275 nonzeros
Variable types: 0 continuous, 1885 integer (1845 binary)
Root relaxation presolved: 1882 rows, 87082 columns, 259160 nonzeros


Root relaxation: objective 4.000000e+01, 2226 iterations, 0.80 seconds (0.93 work units)
Total elapsed time = 9.93s (DegenMoves)
Total elapsed time = 13.81s (DegenMoves)
Total elapsed time = 15.92s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   40.00000    0  398          -   40.00000      -     -   16s
H    0     0                       9.0000000   40.00000   344%     -   16s
H    0     0                      10.0000000   40.00000   300%     -   16s
     0     0   40.00000    0  630   10.00000   40.00000   300%     -   23s
H    0     0                      11.0000000   40.00000   264%     -   24s
     0     0   40.00000    0  669   11.00000   40.00000   264%     -   24s
     0     0   40.00000    0  558   11.00000   40.00000   264%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 29
  Cover: 11
  Clique: 12
  MIR: 90
  StrongCG: 1
  GUB cover: 1
  Zero half: 69
  RLT: 69
  BQP: 2

Explored 1 nodes (37620 simplex iterations) in 50.05 seconds (65.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 10 9 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.000000000000e+01, gap 263.6364%

Wrote result file './lp_solutions/grafo4081.40.sol'

