
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:04:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6902.44.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/grafo6902.44.lp
Reading time = 0.20 seconds
: 127999 rows, 2597 columns, 386231 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 127999 rows, 2597 columns and 386231 nonzeros
Model fingerprint: 0xa78e9a75
Variable types: 51 continuous, 2546 integer (2546 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 33854 rows and 29 columns
Presolve time: 0.95s
Presolved: 94145 rows, 2568 columns, 284997 nonzeros
Variable types: 0 continuous, 2568 integer (2517 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2562 rows, 96707 columns, 287565 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21954    5.3963667e+01   0.000000e+00   2.417533e+04      5s
   41694    5.3943315e+01   0.000000e+00   1.634025e+04     10s
   63114    5.3936556e+01   0.000000e+00   3.956924e+02     15s
   73196    5.4000000e+01   0.000000e+00   0.000000e+00     18s
   73196    5.4000000e+01   0.000000e+00   0.000000e+00     18s
   73196    5.4000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.400000e+01, 73196 iterations, 16.42 seconds (12.98 work units)
Total elapsed time = 41.27s (DegenMoves)

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

     0     0   54.00000    0 1003    4.00000   54.00000  1250%     -   50s

Explored 1 nodes (95533 simplex iterations) in 50.03 seconds (52.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.400000000000e+01, gap 1250.0000%

Wrote result file './lp_solutions/grafo6902.44.sol'

