
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:25:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11327.39.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/grafo11327.39.lp
Reading time = 0.24 seconds
: 145523 rows, 2384 columns, 438761 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 145523 rows, 2384 columns and 438761 nonzeros
Model fingerprint: 0x229a318d
Variable types: 47 continuous, 2337 integer (2337 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 68592 rows and 85 columns
Presolve time: 0.81s
Presolved: 76931 rows, 2299 columns, 233452 nonzeros
Variable types: 0 continuous, 2299 integer (2252 binary)
Root relaxation presolved: 2289 rows, 79220 columns, 235751 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21637    5.1946749e+01   0.000000e+00   3.055062e+04      5s
   45349    5.1924590e+01   0.000000e+00   2.815523e+03     10s
   67777    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   67777    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   67777    5.2000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.200000e+01, 67777 iterations, 14.02 seconds (12.03 work units)
Total elapsed time = 26.38s (DegenMoves)

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

     0     0   52.00000    0  520          -   52.00000      -     -   28s
H    0     0                      13.0000000   52.00000   300%     -   28s
H    0     0                      16.0000000   52.00000   225%     -   28s
     0     0   52.00000    0  933   16.00000   52.00000   225%     -   40s
     0     0   52.00000    0  896   16.00000   52.00000   225%     -   42s
     0     0   52.00000    0  875   16.00000   52.00000   225%     -   50s

Cutting planes:
  Gomory: 4
  Cover: 20
  Clique: 27
  MIR: 120
  Zero half: 64
  RLT: 106

Explored 1 nodes (92079 simplex iterations) in 50.02 seconds (48.71 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 16 13 

Time limit reached
Best objective 1.600000000000e+01, best bound 5.200000000000e+01, gap 225.0000%

Wrote result file './lp_solutions/grafo11327.39.sol'

