
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:26:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6409.40.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/grafo6409.40.lp
Reading time = 0.18 seconds
: 113257 rows, 2227 columns, 341640 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 113257 rows, 2227 columns and 341640 nonzeros
Model fingerprint: 0x988dcfd2
Variable types: 47 continuous, 2180 integer (2180 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]
Found heuristic solution: objective 1.0000000
Presolve removed 34514 rows and 21 columns
Presolve time: 0.84s
Presolved: 78743 rows, 2206 columns, 238426 nonzeros
Variable types: 0 continuous, 2206 integer (2159 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2203 rows, 80946 columns, 240632 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23639    5.2821429e+01   0.000000e+00   1.690675e+04      5s
   50519    5.2801140e+01   0.000000e+00   1.892128e+01     10s
   53031    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   53031    5.3000000e+01   0.000000e+00   0.000000e+00     11s
   53031    5.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.300000e+01, 53031 iterations, 9.68 seconds (7.70 work units)
Total elapsed time = 24.83s (DegenMoves)
Total elapsed time = 29.35s (DegenMoves)
Total elapsed time = 32.62s (DegenMoves)

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

     0     0   53.00000    0  620   10.00000   53.00000   430%     -   33s
H    0     0                      13.0000000   53.00000   308%     -   33s
     0     0          -    0        13.00000   53.00000   308%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 32
  Clique: 24
  MIR: 113
  GUB cover: 2
  Zero half: 33
  RLT: 51
  BQP: 1

Explored 1 nodes (82009 simplex iterations) in 50.02 seconds (55.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 10 1 

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

Wrote result file './lp_solutions/grafo6409.40.sol'

