
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:24:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6798.37.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/grafo6798.37.lp
Reading time = 0.13 seconds
: 77952 rows, 2085 columns, 235726 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 77952 rows, 2085 columns and 235726 nonzeros
Model fingerprint: 0xf6f45b6b
Variable types: 47 continuous, 2038 integer (2038 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 2.0000000
Presolve removed 17584 rows and 21 columns
Presolve time: 0.55s
Presolved: 60368 rows, 2064 columns, 183328 nonzeros
Variable types: 0 continuous, 2064 integer (2017 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2064 rows, 62432 columns, 185392 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25438    5.0816729e+01   0.000000e+00   4.658059e+03      5s
   42590    5.1000000e+01   0.000000e+00   0.000000e+00      8s
   42590    5.1000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 5.100000e+01, 42590 iterations, 7.77 seconds (5.62 work units)
Total elapsed time = 14.98s (DegenMoves)
Total elapsed time = 15.69s (DegenMoves)

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

     0     0   51.00000    0  610    8.00000   51.00000   538%     -   17s
H    0     0                       9.0000000   51.00000   467%     -   17s
H    0     0                      10.0000000   51.00000   410%     -   19s
     0     0   51.00000    0  859   10.00000   51.00000   410%     -   31s
     0     0   51.00000    0  848   10.00000   51.00000   410%     -   32s
     0     0   51.00000    0  894   10.00000   51.00000   410%     -   50s

Cutting planes:
  Gomory: 4
  Cover: 23
  Clique: 6
  MIR: 166
  GUB cover: 1
  Zero half: 48
  RLT: 90

Explored 1 nodes (74783 simplex iterations) in 50.08 seconds (40.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 10 9 8 2 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.100000000000e+01, gap 410.0000%

Wrote result file './lp_solutions/grafo6798.37.sol'

