
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:10:09 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1554.47.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/grafo1554.47.lp
Reading time = 0.25 seconds
: 127669 rows, 2802 columns, 385399 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 127669 rows, 2802 columns and 385399 nonzeros
Model fingerprint: 0xc6e3f669
Variable types: 51 continuous, 2751 integer (2751 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 33614 rows and 74 columns
Presolve time: 1.12s
Presolved: 94055 rows, 2728 columns, 285077 nonzeros
Variable types: 0 continuous, 2728 integer (2677 binary)
Root relaxation presolved: 2725 rows, 96780 columns, 287805 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15755    4.3977064e+01   0.000000e+00   5.804138e+05      5s
   32439    4.3951042e+01   0.000000e+00   1.623039e+04     10s
   47495    4.3942807e+01   0.000000e+00   4.718787e+04     15s
   61772    4.3939824e+01   0.000000e+00   1.326620e+02     20s
   66907    4.4000000e+01   0.000000e+00   0.000000e+00     22s
   66907    4.4000000e+01   0.000000e+00   0.000000e+00     22s
   66907    4.4000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 4.400000e+01, 66907 iterations, 20.51 seconds (15.59 work units)
Total elapsed time = 46.35s (DegenMoves)

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

     0     0   44.00000    0  798          -   44.00000      -     -   50s
H    0     0                       6.0000000   44.00000   633%     -   50s

Explored 1 nodes (83718 simplex iterations) in 50.07 seconds (41.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.400000000000e+01, gap 633.3333%

Wrote result file './lp_solutions/grafo1554.47.sol'

