
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:23:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6275.39.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/grafo6275.39.lp
Reading time = 0.17 seconds
: 101608 rows, 2448 columns, 307187 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 101608 rows, 2448 columns and 307187 nonzeros
Model fingerprint: 0xecb34850
Variable types: 52 continuous, 2396 integer (2396 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]
Found heuristic solution: objective 3.0000000
Presolve removed 22458 rows and 23 columns
Presolve time: 0.83s
Presolved: 79150 rows, 2425 columns, 240271 nonzeros
Variable types: 0 continuous, 2425 integer (2373 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2425 rows, 81575 columns, 242696 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19284    5.0939265e+01   0.000000e+00   1.587005e+05      5s
   40371    5.0907635e+01   0.000000e+00   1.331641e+04     10s
   60973    5.0900603e+01   0.000000e+00   4.427449e+02     15s
   70706    5.1000000e+01   0.000000e+00   0.000000e+00     17s
   70706    5.1000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 5.100000e+01, 70706 iterations, 16.37 seconds (13.05 work units)
Total elapsed time = 31.75s (DegenMoves)

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

     0     0   51.00000    0  591    6.00000   51.00000   750%     -   34s
H    0     0                      12.0000000   51.00000   325%     -   34s
     0     0          -    0        12.00000   51.00000   325%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 53
  Clique: 27
  MIR: 210
  StrongCG: 2
  GUB cover: 7
  Zero half: 70
  RLT: 87
  BQP: 4

Explored 1 nodes (94441 simplex iterations) in 50.01 seconds (46.24 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 6 3 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.100000000000e+01, gap 325.0000%

Wrote result file './lp_solutions/grafo6275.39.sol'

