
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:33:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6876.41.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/grafo6876.41.lp
Reading time = 0.14 seconds
: 90338 rows, 2059 columns, 272606 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 90338 rows, 2059 columns and 272606 nonzeros
Model fingerprint: 0xc586f07f
Variable types: 43 continuous, 2016 integer (2016 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 26141 rows and 13 columns
Presolve time: 0.64s
Presolved: 64197 rows, 2046 columns, 194522 nonzeros
Variable types: 0 continuous, 2046 integer (2003 binary)
Root relaxation presolved: 2046 rows, 66243 columns, 196568 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28126    4.3871602e+01   0.000000e+00   9.064815e+01      5s
   29584    4.4000000e+01   0.000000e+00   0.000000e+00      5s
   29584    4.4000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.400000e+01, 29584 iterations, 4.53 seconds (3.71 work units)
Total elapsed time = 11.50s (DegenMoves)

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

     0     0   44.00000    0  343          -   44.00000      -     -   12s
H    0     0                       8.0000000   44.00000   450%     -   12s
H    0     0                       9.0000000   44.00000   389%     -   12s
H    0     0                      10.0000000   44.00000   340%     -   12s
H    0     0                      12.0000000   44.00000   267%     -   13s
H    0     0                      13.0000000   44.00000   238%     -   19s
     0     0   43.96667    0  623   13.00000   43.96667   238%     -   19s
H    0     0                      14.0000000   43.96667   214%     -   22s
     0     0   43.96667    0  600   14.00000   43.96667   214%     -   22s
     0     0   43.96667    0  560   14.00000   43.96667   214%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 41
  Cover: 35
  Clique: 16
  MIR: 126
  GUB cover: 1
  Zero half: 40
  RLT: 57
  BQP: 1

Explored 1 nodes (66307 simplex iterations) in 50.10 seconds (48.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 14 13 12 ... 8

Time limit reached
Best objective 1.400000000000e+01, best bound 4.300000000000e+01, gap 207.1429%

Wrote result file './lp_solutions/grafo6876.41.sol'

