
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:17:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10031.38.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/grafo10031.38.lp
Reading time = 0.13 seconds
: 78174 rows, 2206 columns, 236564 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 78174 rows, 2206 columns and 236564 nonzeros
Model fingerprint: 0xd1bdcc97
Variable types: 46 continuous, 2160 integer (2160 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 18866 rows and 33 columns
Presolve time: 0.53s
Presolved: 59308 rows, 2173 columns, 180732 nonzeros
Variable types: 0 continuous, 2173 integer (2127 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2173 rows, 61481 columns, 182905 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26385    4.0928717e+01   0.000000e+00   1.316309e+01      5s
   26991    4.1000000e+01   0.000000e+00   0.000000e+00      5s
   26991    4.1000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.100000e+01, 26991 iterations, 4.48 seconds (3.67 work units)
Total elapsed time = 10.19s (DegenMoves)

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

     0     0   41.00000    0  396   11.00000   41.00000   273%     -   11s
H    0     0                      12.0000000   41.00000   242%     -   11s
     0     0   41.00000    0  693   12.00000   41.00000   242%     -   19s
     0     0   41.00000    0  694   12.00000   41.00000   242%     -   20s
H    0     0                      14.0000000   41.00000   193%     -   47s
     0     0   41.00000    0  334   14.00000   41.00000   193%     -   48s
     0     0   41.00000    0  386   14.00000   41.00000   193%     -   49s

Cutting planes:
  Gomory: 1
  Cover: 41
  Clique: 13
  MIR: 112
  GUB cover: 3
  Zero half: 2
  RLT: 20
  BQP: 5

Explored 1 nodes (67405 simplex iterations) in 50.24 seconds (45.91 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 12 11 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.100000000000e+01, gap 192.8571%

Wrote result file './lp_solutions/grafo10031.38.sol'

