
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:38:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2530.38.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/grafo2530.38.lp
Reading time = 0.37 seconds
: 231804 rows, 2173 columns, 697311 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 231804 rows, 2173 columns and 697311 nonzeros
Model fingerprint: 0x6aa5d8ac
Variable types: 45 continuous, 2128 integer (2128 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 100247 rows and 15 columns
Presolve time: 1.74s
Presolved: 131557 rows, 2158 columns, 396969 nonzeros
Variable types: 0 continuous, 2158 integer (2113 binary)
Root relaxation presolved: 2158 rows, 133715 columns, 399127 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20605    6.2109624e+01   0.000000e+00   1.271790e+05      5s
   48241    5.0817430e+01   0.000000e+00   2.589301e+04     10s
   75121    5.0798167e+01   0.000000e+00   1.206415e+02     15s
   77991    5.1000000e+01   0.000000e+00   0.000000e+00     16s
   77991    5.1000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.100000e+01, 77991 iterations, 13.63 seconds (10.17 work units)
Total elapsed time = 26.49s (DegenMoves)

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

     0     0   51.00000    0  587          -   51.00000      -     -   29s
H    0     0                       6.0000000   51.00000   750%     -   30s
     0     0          -    0         6.00000   51.00000   750%     -   50s

Cutting planes:
  Gomory: 14
  Cover: 64
  Clique: 58
  MIR: 135
  StrongCG: 3
  GUB cover: 4
  Zero half: 57
  RLT: 103
  BQP: 11

Explored 1 nodes (94157 simplex iterations) in 50.03 seconds (52.07 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.100000000000e+01, gap 750.0000%

Wrote result file './lp_solutions/grafo2530.38.sol'

