
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:34:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6619.48.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/grafo6619.48.lp
Reading time = 0.13 seconds
: 85762 rows, 2488 columns, 259152 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 85762 rows, 2488 columns and 259152 nonzeros
Model fingerprint: 0x2f0c0667
Variable types: 47 continuous, 2441 integer (2441 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 11048 rows and 16 columns
Presolve time: 0.52s
Presolved: 74714 rows, 2472 columns, 226265 nonzeros
Variable types: 0 continuous, 2472 integer (2425 binary)
Root relaxation presolved: 2466 rows, 77180 columns, 228737 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24487    4.4746117e+01   0.000000e+00   1.121309e+03      5s
   33813    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   33813    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   33813    4.5000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.500000e+01, 33813 iterations, 6.47 seconds (5.41 work units)
Total elapsed time = 16.54s (DegenMoves)

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

     0     0   45.00000    0  558          -   45.00000      -     -   18s
H    0     0                       7.0000000   45.00000   543%     -   18s
H    0     0                      10.0000000   45.00000   350%     -   18s
H    0     0                      11.0000000   45.00000   309%     -   20s
     0     0   45.00000    0  730   11.00000   45.00000   309%     -   26s
     0     0   45.00000    0  667   11.00000   45.00000   309%     -   29s
     0     0   45.00000    0  616   11.00000   45.00000   309%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 34
  Cover: 12
  Clique: 4
  MIR: 145
  StrongCG: 2
  GUB cover: 2
  Zero half: 42
  RLT: 54
  BQP: 1

Explored 1 nodes (68829 simplex iterations) in 50.09 seconds (43.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 10 7 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.500000000000e+01, gap 309.0909%

Wrote result file './lp_solutions/grafo6619.48.sol'

