
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:22:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4084.41.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/grafo4084.41.lp
Reading time = 0.46 seconds
: 204686 rows, 2601 columns, 616518 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 204686 rows, 2601 columns and 616518 nonzeros
Model fingerprint: 0xc3b311d6
Variable types: 52 continuous, 2549 integer (2549 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 81099 rows and 24 columns
Presolve time: 1.85s
Presolved: 123587 rows, 2577 columns, 373744 nonzeros
Variable types: 0 continuous, 2577 integer (2525 binary)
Root relaxation presolved: 2568 rows, 126155 columns, 376321 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11455    5.0173602e+01   0.000000e+00   2.834071e+06      5s
   29301    4.9729511e+01   0.000000e+00   2.643859e+04     10s
   43301    4.9707587e+01   0.000000e+00   4.490025e+03     15s
   55225    5.0000000e+01   0.000000e+00   0.000000e+00     19s
   55225    5.0000000e+01   0.000000e+00   0.000000e+00     19s
   55225    5.0000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.000000e+01, 55225 iterations, 17.16 seconds (9.86 work units)
Total elapsed time = 38.82s (DegenMoves)
Total elapsed time = 40.60s (DegenMoves)

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

     0     0   50.00000    0  575          -   50.00000      -     -   41s
H    0     0                       9.0000000   50.00000   456%     -   41s
     0     0          -    0         9.00000   50.00000   456%     -   50s

Cutting planes:
  Gomory: 50
  Cover: 50
  Clique: 13
  MIR: 147
  GUB cover: 3
  Zero half: 33
  RLT: 52
  BQP: 5

Explored 1 nodes (69350 simplex iterations) in 50.03 seconds (36.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.000000000000e+01, gap 455.5556%

Wrote result file './lp_solutions/grafo4084.41.sol'

