
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:33:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3773.40.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/grafo3773.40.lp
Reading time = 0.30 seconds
: 159965 rows, 2390 columns, 482073 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 159965 rows, 2390 columns and 482073 nonzeros
Model fingerprint: 0xd9fc134e
Variable types: 49 continuous, 2341 integer (2341 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 4.0000000
Presolve removed 55806 rows and 23 columns
Presolve time: 1.55s
Presolved: 104159 rows, 2367 columns, 315067 nonzeros
Variable types: 0 continuous, 2367 integer (2318 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2361 rows, 106520 columns, 317434 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16356    4.5998833e+01   0.000000e+00   1.604135e+05      5s
   34814    4.5957347e+01   0.000000e+00   1.669510e+04     10s
   52639    4.5951151e+01   0.000000e+00   2.411337e+04     15s
   64677    4.6000000e+01   0.000000e+00   0.000000e+00     19s
   64677    4.6000000e+01   0.000000e+00   0.000000e+00     19s
   64677    4.6000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.600000e+01, 64677 iterations, 17.49 seconds (11.31 work units)
Total elapsed time = 43.34s (DegenMoves)

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

     0     0   46.00000    0  704   12.00000   46.00000   283%     -   50s

Explored 1 nodes (82441 simplex iterations) in 50.06 seconds (43.66 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 4 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.600000000000e+01, gap 283.3333%

Wrote result file './lp_solutions/grafo3773.40.sol'

