
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:00:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6852.44.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/grafo6852.44.lp
Reading time = 0.25 seconds
: 157986 rows, 2959 columns, 476768 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 157986 rows, 2959 columns and 476768 nonzeros
Model fingerprint: 0x37fe2fd8
Variable types: 55 continuous, 2904 integer (2904 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, 6e+01]
Presolve removed 45012 rows and 38 columns
Presolve time: 1.03s
Presolved: 112974 rows, 2921 columns, 342153 nonzeros
Variable types: 0 continuous, 2921 integer (2866 binary)
Root relaxation presolved: 2908 rows, 115882 columns, 345074 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18451    6.2679849e+01   0.000000e+00   9.626651e+04      5s
   38653    6.2621783e+01   0.000000e+00   7.559215e+03     10s
   54164    6.3000000e+01   0.000000e+00   0.000000e+00     14s
   54164    6.3000000e+01   0.000000e+00   0.000000e+00     14s
   54164    6.3000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 6.300000e+01, 54164 iterations, 13.15 seconds (10.88 work units)
Total elapsed time = 33.25s (DegenMoves)
Total elapsed time = 46.62s (DegenMoves)

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

     0     0   63.00000    0  795          -   63.00000      -     -   49s
H    0     0                       7.0000000   63.00000   800%     -   50s

Cutting planes:
  Cover: 64
  Clique: 65
  GUB cover: 2

Explored 1 nodes (78683 simplex iterations) in 50.06 seconds (62.30 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 6.300000000000e+01, gap 800.0000%

Wrote result file './lp_solutions/grafo6852.44.sol'

