
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:45:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4069.50.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/grafo4069.50.lp
Reading time = 0.22 seconds
: 131008 rows, 3271 columns, 395948 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 131008 rows, 3271 columns and 395948 nonzeros
Model fingerprint: 0xe071609d
Variable types: 58 continuous, 3213 integer (3213 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, 6e+01]
Found heuristic solution: objective 2.0000000
Presolve removed 17300 rows and 2 columns
Presolve time: 0.80s
Presolved: 113708 rows, 3269 columns, 344604 nonzeros
Variable types: 0 continuous, 3269 integer (3211 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 3215 rows, 116923 columns, 347873 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17486    4.9971372e+01   0.000000e+00   7.083088e+04      5s
   34362    4.9945889e+01   0.000000e+00   7.551059e+03     10s
   48954    4.9940083e+01   0.000000e+00   2.220433e+03     15s
   63090    4.9938761e+01   0.000000e+00   1.327039e+03     20s
   67633    5.0000000e+01   0.000000e+00   0.000000e+00     22s
   67633    5.0000000e+01   0.000000e+00   0.000000e+00     22s
   67633    5.0000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.000000e+01, 67633 iterations, 20.74 seconds (15.79 work units)

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

     0     0   50.00000    0 1454   10.00000   50.00000   400%     -   50s

Explored 1 nodes (79447 simplex iterations) in 50.04 seconds (40.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 2 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.000000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo4069.50.sol'

