
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 03:10:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3107.32.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/grafo3107.32.lp
Reading time = 0.25 seconds
: 158229 rows, 2113 columns, 476800 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 158229 rows, 2113 columns and 476800 nonzeros
Model fingerprint: 0x95e1441c
Variable types: 47 continuous, 2066 integer (2066 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 64924 rows and 3 columns
Presolve time: 0.96s
Presolved: 93305 rows, 2110 columns, 282480 nonzeros
Variable types: 0 continuous, 2110 integer (2063 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2100 rows, 95405 columns, 284590 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24338    5.2872503e+01   0.000000e+00   3.236315e+04      5s
   51218    5.2848877e+01   0.000000e+00   1.182510e+02     10s
   54594    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   54594    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   54594    5.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.300000e+01, 54594 iterations, 9.50 seconds (7.18 work units)
Total elapsed time = 23.04s (DegenMoves)
Total elapsed time = 25.11s (DegenMoves)

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

     0     0   53.00000    0  493    5.00000   53.00000   960%     -   26s
H    0     0                       9.0000000   53.00000   489%     -   26s
H    0     0                      10.0000000   53.00000   430%     -   26s
     0     0   53.00000    0  848   10.00000   53.00000   430%     -   42s
H    0     0                      13.0000000   53.00000   308%     -   43s
     0     0   53.00000    0  756   13.00000   53.00000   308%     -   46s

Cutting planes:
  Gomory: 2
  Lift-and-project: 19
  Cover: 9
  Clique: 28
  MIR: 111
  StrongCG: 1
  Zero half: 60
  RLT: 20

Explored 1 nodes (77766 simplex iterations) in 50.19 seconds (52.85 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 13 10 9 5 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.300000000000e+01, gap 307.6923%

Wrote result file './lp_solutions/grafo3107.32.sol'

