
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:25:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6916.42.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/grafo6916.42.lp
Reading time = 0.16 seconds
: 81938 rows, 2365 columns, 247889 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 81938 rows, 2365 columns and 247889 nonzeros
Model fingerprint: 0x84417a25
Variable types: 48 continuous, 2317 integer (2317 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 18041 rows and 64 columns
Presolve time: 0.61s
Presolved: 63897 rows, 2301 columns, 194192 nonzeros
Variable types: 0 continuous, 2301 integer (2253 binary)
Root relaxation presolved: 2295 rows, 66192 columns, 196493 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17421    4.4740783e+01   0.000000e+00   1.350826e+04      5s
   33031    4.5000000e+01   0.000000e+00   0.000000e+00      9s
   33031    4.5000000e+01   0.000000e+00   0.000000e+00      9s
   33031    4.5000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.500000e+01, 33031 iterations, 8.56 seconds (4.86 work units)
Total elapsed time = 19.46s (DegenMoves)
Total elapsed time = 35.02s (DegenMoves)
Total elapsed time = 42.05s (DegenMoves)

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

     0     0   45.00000    0  563          -   45.00000      -     -   42s
H    0     0                       6.0000000   45.00000   650%     -   46s
     0     0          -    0         6.00000   45.00000   650%     -   50s

Cutting planes:
  Gomory: 36
  Cover: 26
  MIR: 106
  GUB cover: 3
  Zero half: 23
  RLT: 30

Explored 1 nodes (66653 simplex iterations) in 50.13 seconds (42.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.500000000000e+01, gap 650.0000%

Wrote result file './lp_solutions/grafo6916.42.sol'

