
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:17:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6079.40.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/grafo6079.40.lp
Reading time = 0.11 seconds
: 65378 rows, 2065 columns, 197801 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 65378 rows, 2065 columns and 197801 nonzeros
Model fingerprint: 0xfcb2ff70
Variable types: 45 continuous, 2020 integer (2020 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 -0.0000000
Presolve removed 10502 rows and 24 columns
Presolve time: 0.42s
Presolved: 54876 rows, 2041 columns, 166641 nonzeros
Variable types: 0 continuous, 2041 integer (1996 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2041 rows, 56917 columns, 168682 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27200    4.8964254e+01   0.000000e+00   2.764952e+04      5s
   48124    4.9000000e+01   0.000000e+00   0.000000e+00      9s
   48124    4.9000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.900000e+01, 48124 iterations, 8.60 seconds (7.07 work units)
Total elapsed time = 18.42s (DegenMoves)
Total elapsed time = 28.74s (DegenMoves)
Total elapsed time = 32.35s (DegenMoves)

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

     0     0   49.00000    0  606   10.00000   49.00000   390%     -   37s
H    0     0                      12.0000000   49.00000   308%     -   39s
     0     0   49.00000    0  813   12.00000   49.00000   308%     -   49s

Cutting planes:
  Gomory: 4
  Cover: 2
  MIR: 66
  Zero half: 3
  RLT: 28

Explored 1 nodes (92522 simplex iterations) in 50.04 seconds (51.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 -0 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.900000000000e+01, gap 308.3333%

Wrote result file './lp_solutions/grafo6079.40.sol'

