
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:19:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6822.47.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/grafo6822.47.lp
Reading time = 0.10 seconds
: 62872 rows, 2235 columns, 190119 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 62872 rows, 2235 columns and 190119 nonzeros
Model fingerprint: 0x9d96108b
Variable types: 43 continuous, 2192 integer (2192 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 3688 rows and 10 columns
Presolve time: 0.35s
Presolved: 59184 rows, 2225 columns, 179262 nonzeros
Variable types: 0 continuous, 2225 integer (2182 binary)
Root relaxation presolved: 2195 rows, 61379 columns, 181487 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28295    3.8958995e+01   0.000000e+00   9.369459e+01      5s
   38206    3.9000000e+01   0.000000e+00   0.000000e+00      7s
   38206    3.9000000e+01   0.000000e+00   0.000000e+00      7s
   38206    3.9000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.900000e+01, 38206 iterations, 6.40 seconds (5.37 work units)
Total elapsed time = 17.20s (DegenMoves)
Total elapsed time = 20.35s (DegenMoves)

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

     0     0   39.00000    0  462          -   39.00000      -     -   22s
H    0     0                       8.0000000   39.00000   387%     -   22s
H    0     0                       9.0000000   39.00000   333%     -   22s
H    0     0                      10.0000000   39.00000   290%     -   25s
     0     0   39.00000    0  749   10.00000   39.00000   290%     -   30s
H    0     0                      11.0000000   39.00000   255%     -   30s
     0     0   39.00000    0  729   11.00000   39.00000   255%     -   31s
H    0     0                      12.0000000   39.00000   225%     -   48s
H    0     0                      14.0000000   39.00000   179%     -   48s
     0     0   39.00000    0  559   14.00000   39.00000   179%     -   48s
     0     0   39.00000    0  498   14.00000   39.00000   179%     -   49s

Cutting planes:
  Lift-and-project: 2
  Cover: 21
  Clique: 4
  MIR: 120
  StrongCG: 2
  Zero half: 3
  RLT: 30
  Relax-and-lift: 1

Explored 1 nodes (81341 simplex iterations) in 50.09 seconds (47.55 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 14 12 11 ... 8

Time limit reached
Best objective 1.400000000000e+01, best bound 3.900000000000e+01, gap 178.5714%

Wrote result file './lp_solutions/grafo6822.47.sol'

