
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:39:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4473.48.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/grafo4473.48.lp
Reading time = 0.29 seconds
: 138971 rows, 3088 columns, 419720 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 138971 rows, 3088 columns and 419720 nonzeros
Model fingerprint: 0x01ed6e3c
Variable types: 54 continuous, 3034 integer (3034 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 38569 rows and 110 columns
Presolve time: 1.10s
Presolved: 100402 rows, 2978 columns, 304452 nonzeros
Variable types: 0 continuous, 2978 integer (2924 binary)
Root relaxation presolved: 2970 rows, 103372 columns, 307430 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14168    4.4946856e+01   0.000000e+00   1.181228e+05      5s
   30477    4.4916830e+01   0.000000e+00   2.719371e+03     10s
   43502    4.4912598e+01   0.000000e+00   1.982159e+03     15s
   51163    4.5000000e+01   0.000000e+00   0.000000e+00     18s
   51163    4.5000000e+01   0.000000e+00   0.000000e+00     18s
   51163    4.5000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.500000e+01, 51163 iterations, 17.07 seconds (13.11 work units)
Total elapsed time = 39.28s (DegenMoves)
Total elapsed time = 40.18s (DegenMoves)

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

     0     0   45.00000    0  647          -   45.00000      -     -   41s
H    0     0                      14.0000000   45.00000   221%     -   50s

Cutting planes:
  Cover: 29
  Clique: 24
  MIR: 84
  GUB cover: 1

Explored 1 nodes (65488 simplex iterations) in 50.06 seconds (35.79 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 14 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.500000000000e+01, gap 221.4286%

Wrote result file './lp_solutions/grafo4473.48.sol'

