
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:12:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3650.41.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/grafo3650.41.lp
Reading time = 0.39 seconds
: 219344 rows, 2463 columns, 660219 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 219344 rows, 2463 columns and 660219 nonzeros
Model fingerprint: 0x1d4b5106
Variable types: 49 continuous, 2414 integer (2414 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 87802 rows and 24 columns
Presolve time: 2.08s
Presolved: 131542 rows, 2439 columns, 397213 nonzeros
Variable types: 0 continuous, 2439 integer (2390 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2439 rows, 133981 columns, 399652 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13191    7.9199607e+01   0.000000e+00   2.099123e+06      5s
   31104    5.6822456e+01   0.000000e+00   2.368937e+05     10s
   49467    5.2757406e+01   0.000000e+00   1.094231e+04     15s
   62177    5.3000000e+01   0.000000e+00   0.000000e+00     19s
   62177    5.3000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.300000e+01, 62177 iterations, 16.46 seconds (10.21 work units)
Total elapsed time = 44.38s (DegenMoves)
Total elapsed time = 48.70s (DegenMoves)

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

     0     0   53.00000    0  732    7.00000   53.00000   657%     -   50s

Explored 1 nodes (76195 simplex iterations) in 50.06 seconds (41.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.300000000000e+01, gap 657.1429%

Wrote result file './lp_solutions/grafo3650.41.sol'

