
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:50:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4009.43.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/grafo4009.43.lp
Reading time = 0.31 seconds
: 153556 rows, 2444 columns, 462728 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 153556 rows, 2444 columns and 462728 nonzeros
Model fingerprint: 0xa1c32d43
Variable types: 47 continuous, 2397 integer (2397 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 59672 rows and 14 columns
Presolve time: 1.19s
Presolved: 93884 rows, 2430 columns, 284237 nonzeros
Variable types: 0 continuous, 2430 integer (2383 binary)
Root relaxation presolved: 2423 rows, 96307 columns, 286667 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15102    5.6911416e+01   0.000000e+00   1.173158e+05      5s
   33087    4.9784162e+01   0.000000e+00   1.476731e+05     10s
   51651    4.9758091e+01   0.000000e+00   6.059659e+03     15s
   66962    5.0000000e+01   0.000000e+00   0.000000e+00     19s
   66962    5.0000000e+01   0.000000e+00   0.000000e+00     19s
   66962    5.0000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.000000e+01, 66962 iterations, 17.84 seconds (10.33 work units)
Total elapsed time = 34.51s (DegenMoves)
Total elapsed time = 37.32s (DegenMoves)
Total elapsed time = 40.77s (DegenMoves)

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

     0     0   50.00000    0  492          -   50.00000      -     -   41s
H    0     0                       7.0000000   50.00000   614%     -   43s
     0     0          -    0         7.00000   50.00000   614%     -   50s

Cutting planes:
  Gomory: 43
  Cover: 49
  Clique: 16
  MIR: 174
  GUB cover: 3
  Zero half: 42
  RLT: 72
  BQP: 4

Explored 1 nodes (85878 simplex iterations) in 50.03 seconds (40.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.000000000000e+01, gap 614.2857%

Wrote result file './lp_solutions/grafo4009.43.sol'

