
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:23:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5451.41.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/grafo5451.41.lp
Reading time = 0.52 seconds
: 258511 rows, 2465 columns, 777666 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 258511 rows, 2465 columns and 777666 nonzeros
Model fingerprint: 0xf9c4439c
Variable types: 47 continuous, 2418 integer (2418 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 111044 rows and 2 columns
Presolve time: 2.15s
Presolved: 147467 rows, 2463 columns, 444987 nonzeros
Variable types: 0 continuous, 2463 integer (2416 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2447 rows, 149914 columns, 447450 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14358    1.0613675e+02   0.000000e+00   2.828257e+05      5s
   33247    6.1951152e+01   0.000000e+00   4.506618e+05     10s
   50315    5.4830787e+01   0.000000e+00   1.169153e+05     15s
   68685    5.4777694e+01   0.000000e+00   9.601901e+03     20s
   86365    5.4765273e+01   0.000000e+00   2.352239e+03     25s
  102221    5.5000000e+01   0.000000e+00   0.000000e+00     30s
  102221    5.5000000e+01   0.000000e+00   0.000000e+00     30s
  102221    5.5000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 5.500000e+01, 102221 iterations, 27.07 seconds (16.11 work units)
Total elapsed time = 30.18s (DegenMoves)

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

     0     0   55.00000    0 1291   10.00000   55.00000   450%     -   50s

Explored 1 nodes (110626 simplex iterations) in 50.06 seconds (35.70 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 10 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.500000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo5451.41.sol'

