
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:14:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6883.43.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/grafo6883.43.lp
Reading time = 0.30 seconds
: 148975 rows, 2193 columns, 448613 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 148975 rows, 2193 columns and 448613 nonzeros
Model fingerprint: 0xa01d3dd5
Variable types: 43 continuous, 2150 integer (2150 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 59600 rows and 10 columns
Presolve time: 1.24s
Presolved: 89375 rows, 2183 columns, 270197 nonzeros
Variable types: 0 continuous, 2183 integer (2140 binary)
Root relaxation presolved: 2179 rows, 91554 columns, 272380 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16407    4.5899163e+01   0.000000e+00   1.730911e+06      5s
   39272    4.5794756e+01   0.000000e+00   1.336612e+03     10s
   58880    4.6000000e+01   0.000000e+00   0.000000e+00     14s
   58880    4.6000000e+01   0.000000e+00   0.000000e+00     14s
   58880    4.6000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.600000e+01, 58880 iterations, 12.81 seconds (7.47 work units)
Total elapsed time = 23.96s (DegenMoves)
Total elapsed time = 38.39s (DegenMoves)
Total elapsed time = 41.85s (DegenMoves)

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

     0     0   46.00000    0  399          -   46.00000      -     -   44s
H    0     0                       6.0000000   46.00000   667%     -   47s
     0     0          -    0         6.00000   46.00000   667%     -   50s

Cutting planes:
  Gomory: 26
  Cover: 41
  Clique: 15
  MIR: 120
  GUB cover: 3
  Zero half: 30
  RLT: 69
  BQP: 3

Explored 1 nodes (84506 simplex iterations) in 50.06 seconds (48.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.600000000000e+01, gap 666.6667%

Wrote result file './lp_solutions/grafo6883.43.sol'

