
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:26:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6771.46.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/grafo6771.46.lp
Reading time = 0.17 seconds
: 95329 rows, 2474 columns, 287954 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 95329 rows, 2474 columns and 287954 nonzeros
Model fingerprint: 0xca867d7d
Variable types: 47 continuous, 2427 integer (2427 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 18585 rows and 11 columns
Presolve time: 0.63s
Presolved: 76744 rows, 2463 columns, 232559 nonzeros
Variable types: 0 continuous, 2463 integer (2416 binary)
Root relaxation presolved: 2459 rows, 79203 columns, 235022 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20326    4.8775632e+01   0.000000e+00   1.858020e+04      5s
   35286    4.8766167e+01   0.000000e+00   4.881917e+02     10s
   38862    4.9000000e+01   0.000000e+00   0.000000e+00     11s
   38862    4.9000000e+01   0.000000e+00   0.000000e+00     11s
   38862    4.9000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.900000e+01, 38862 iterations, 10.58 seconds (6.12 work units)
Total elapsed time = 25.36s (DegenMoves)

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

     0     0   49.00000    0  494          -   49.00000      -     -   27s
H    0     0                       8.0000000   49.00000   512%     -   30s
     0     0   49.00000    0  834    8.00000   49.00000   512%     -   46s
H    0     0                       9.0000000   49.00000   444%     -   47s
     0     0   49.00000    0  850    9.00000   49.00000   444%     -   47s

Cutting planes:
  Gomory: 5
  Cover: 20
  Clique: 7
  MIR: 162
  GUB cover: 1
  Zero half: 31
  RLT: 51
  BQP: 1

Explored 1 nodes (62092 simplex iterations) in 50.14 seconds (34.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 8 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.900000000000e+01, gap 444.4444%

Wrote result file './lp_solutions/grafo6771.46.sol'

