
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:51:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11283.40.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/grafo11283.40.lp
Reading time = 0.11 seconds
: 68922 rows, 2164 columns, 208630 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 68922 rows, 2164 columns and 208630 nonzeros
Model fingerprint: 0x46a551fc
Variable types: 46 continuous, 2118 integer (2118 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 11539 rows and 37 columns
Presolve time: 0.42s
Presolved: 57383 rows, 2127 columns, 174481 nonzeros
Variable types: 0 continuous, 2127 integer (2081 binary)
Root relaxation presolved: 2121 rows, 59504 columns, 176608 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27650    4.1951793e+01   0.000000e+00   2.980788e+02      5s
   29917    4.2000000e+01   0.000000e+00   0.000000e+00      5s
   29917    4.2000000e+01   0.000000e+00   0.000000e+00      5s
   29917    4.2000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.200000e+01, 29917 iterations, 4.96 seconds (4.10 work units)
Total elapsed time = 11.18s (DegenMoves)

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

     0     0   42.00000    0  445          -   42.00000      -     -   11s
H    0     0                      10.0000000   42.00000   320%     -   12s
     0     0   42.00000    0  699   10.00000   42.00000   320%     -   18s
     0     0   42.00000    0  712   10.00000   42.00000   320%     -   18s
     0     0   42.00000    0  302   10.00000   42.00000   320%     -   41s
H    0     0                      13.0000000   42.00000   223%     -   41s
     0     0   42.00000    0  317   13.00000   42.00000   223%     -   41s
     0     0   42.00000    0  540   13.00000   42.00000   223%     -   50s

Cutting planes:
  Cover: 42
  Clique: 2
  MIR: 110
  StrongCG: 2
  GUB cover: 2
  Zero half: 69
  RLT: 66

Explored 1 nodes (72618 simplex iterations) in 50.06 seconds (45.32 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 10 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.200000000000e+01, gap 223.0769%

Wrote result file './lp_solutions/grafo11283.40.sol'

