
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:54:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6153.39.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/grafo6153.39.lp
Reading time = 0.45 seconds
: 236887 rows, 2456 columns, 712914 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 236887 rows, 2456 columns and 712914 nonzeros
Model fingerprint: 0x5d1dd49e
Variable types: 49 continuous, 2407 integer (2407 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 99290 rows and 16 columns
Presolve time: 1.69s
Presolved: 137597 rows, 2440 columns, 415522 nonzeros
Variable types: 0 continuous, 2440 integer (2391 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2434 rows, 140031 columns, 417962 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17715    6.7932270e+01   0.000000e+00   1.925524e+06      5s
   39176    5.7811301e+01   0.000000e+00   4.790382e+04     10s
   61153    5.7770107e+01   0.000000e+00   1.505719e+04     15s
   84409    5.7758697e+01   0.000000e+00   3.186231e+02     20s
   92610    5.8000000e+01   0.000000e+00   0.000000e+00     22s
   92610    5.8000000e+01   0.000000e+00   0.000000e+00     22s
   92610    5.8000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.800000e+01, 92610 iterations, 20.02 seconds (14.33 work units)
Total elapsed time = 44.03s (DegenMoves)
Total elapsed time = 46.70s (DegenMoves)

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

     0     0   58.00000    0  765    9.00000   58.00000   544%     -   50s

Explored 1 nodes (108107 simplex iterations) in 50.06 seconds (49.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.800000000000e+01, gap 544.4444%

Wrote result file './lp_solutions/grafo6153.39.sol'

