
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:14:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6729.38.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/grafo6729.38.lp
Reading time = 0.19 seconds
: 121286 rows, 2329 columns, 366007 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 121286 rows, 2329 columns and 366007 nonzeros
Model fingerprint: 0x55ed7858
Variable types: 50 continuous, 2279 integer (2279 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]
Found heuristic solution: objective 1.0000000
Presolve removed 36693 rows and 31 columns
Presolve time: 0.93s
Presolved: 84593 rows, 2298 columns, 256405 nonzeros
Variable types: 0 continuous, 2298 integer (2248 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2292 rows, 86885 columns, 258703 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21542    5.1745797e+01   0.000000e+00   1.154451e+05      5s
   46101    5.0709322e+01   0.000000e+00   2.481514e+02     10s
   49890    5.1000000e+01   0.000000e+00   0.000000e+00     11s
   49890    5.1000000e+01   0.000000e+00   0.000000e+00     11s
   49890    5.1000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.100000e+01, 49890 iterations, 9.80 seconds (8.30 work units)
Total elapsed time = 36.91s (DegenMoves)
Total elapsed time = 43.75s (DegenMoves)
Total elapsed time = 47.14s (DegenMoves)

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

     0     0   51.00000    0  859    8.00000   51.00000   537%     -   50s

Explored 1 nodes (75135 simplex iterations) in 50.04 seconds (58.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.100000000000e+01, gap 537.5000%

Wrote result file './lp_solutions/grafo6729.38.sol'

