
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 05:48:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3461.37.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/grafo3461.37.lp
Reading time = 1.01 seconds
: 631536 rows, 2902 columns, 1897549 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 631536 rows, 2902 columns and 1897549 nonzeros
Model fingerprint: 0x98f95968
Variable types: 55 continuous, 2847 integer (2847 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]
Presolve removed 302690 rows and 0 columns
Presolve time: 4.29s
Presolved: 328846 rows, 2902 columns, 989902 nonzeros
Variable types: 0 continuous, 2902 integer (2847 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2878 rows, 331724 columns, 992804 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    1.3181400e+03   0.000000e+00   1.897709e+06      6s
   27611    1.8859266e+02   0.000000e+00   8.936879e+05     11s
   53432    1.4649927e+02   0.000000e+00   2.603897e+06     17s
   64126    1.2965880e+02   0.000000e+00   2.665815e+05     20s
   82646    9.8986147e+01   0.000000e+00   4.854616e+06     26s
   97303    7.5982104e+01   0.000000e+00   1.058855e+05     30s
  115685    7.5946954e+01   0.000000e+00   7.399715e+05     36s
  131122    7.5917261e+01   0.000000e+00   1.578904e+05     40s
  148430    7.5893786e+01   0.000000e+00   2.554201e+04     45s

Root relaxation: time limit, 165450 iterations, 44.80 seconds (34.03 work units)

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

     0     0          -    0         4.00000  525.00000      -     -   50s

Explored 1 nodes (165450 simplex iterations) in 50.04 seconds (39.15 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.250000000000e+02, gap 13025.0000%

Wrote result file './lp_solutions/grafo3461.37.sol'

