
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:40:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3705.44.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/grafo3705.44.lp
Reading time = 0.33 seconds
: 173122 rows, 2798 columns, 521982 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 173122 rows, 2798 columns and 521982 nonzeros
Model fingerprint: 0xdca87435
Variable types: 53 continuous, 2745 integer (2745 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 54464 rows and 26 columns
Presolve time: 1.65s
Presolved: 118658 rows, 2772 columns, 358963 nonzeros
Variable types: 0 continuous, 2772 integer (2719 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2772 rows, 121430 columns, 361735 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14159    6.1963796e+01   0.000000e+00   1.285018e+06      5s
   28807    5.4789574e+01   0.000000e+00   1.457843e+05     10s
   45087    5.4722224e+01   0.000000e+00   2.856187e+04     15s
   60207    5.4700254e+01   0.000000e+00   6.751188e+03     20s
   75327    5.4690640e+01   0.000000e+00   9.722776e+03     25s
   90951    5.4686406e+01   0.000000e+00   9.333899e+02     30s
  101551    5.5000000e+01   0.000000e+00   0.000000e+00     34s
  101551    5.5000000e+01   0.000000e+00   0.000000e+00     34s

Root relaxation: objective 5.500000e+01, 101551 iterations, 31.66 seconds (18.51 work units)

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

     0     0   55.00000    0 1639    6.00000   55.00000   817%     -   50s

Explored 1 nodes (109459 simplex iterations) in 50.04 seconds (33.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.500000000000e+01, gap 816.6667%

Wrote result file './lp_solutions/grafo3705.44.sol'

