
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:39:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6668.49.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/grafo6668.49.lp
Reading time = 0.23 seconds
: 138412 rows, 2883 columns, 417599 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 138412 rows, 2883 columns and 417599 nonzeros
Model fingerprint: 0x9deb42ef
Variable types: 52 continuous, 2831 integer (2831 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 32344 rows and 26 columns
Presolve time: 1.04s
Presolved: 106068 rows, 2857 columns, 320975 nonzeros
Variable types: 0 continuous, 2857 integer (2805 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2851 rows, 108919 columns, 323832 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19174    5.0953754e+01   0.000000e+00   2.129070e+04      5s
   37321    5.0933653e+01   0.000000e+00   5.724900e+03     10s
   54601    5.0929217e+01   0.000000e+00   4.396766e+03     15s
   68079    5.1000000e+01   0.000000e+00   0.000000e+00     19s
   68079    5.1000000e+01   0.000000e+00   0.000000e+00     19s
   68079    5.1000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.100000e+01, 68079 iterations, 17.76 seconds (13.19 work units)
Total elapsed time = 36.78s (DegenMoves)
Total elapsed time = 40.04s (DegenMoves)

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

     0     0   51.00000    0  628    8.00000   51.00000   537%     -   40s
H    0     0                      11.0000000   51.00000   364%     -   40s
     0     0          -    0        11.00000   51.00000   364%     -   50s

Cutting planes:
  Gomory: 36
  Cover: 41
  Clique: 11
  MIR: 218
  GUB cover: 3
  Zero half: 89
  RLT: 73

Explored 1 nodes (86851 simplex iterations) in 50.02 seconds (43.27 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 8 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.100000000000e+01, gap 363.6364%

Wrote result file './lp_solutions/grafo6668.49.sol'

