
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:21:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6880.44.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/grafo6880.44.lp
Reading time = 0.16 seconds
: 98866 rows, 2679 columns, 298967 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 98866 rows, 2679 columns and 298967 nonzeros
Model fingerprint: 0xb7a77b83
Variable types: 53 continuous, 2626 integer (2626 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 15277 rows and 1 columns
Presolve time: 0.54s
Presolved: 83589 rows, 2678 columns, 253544 nonzeros
Variable types: 0 continuous, 2678 integer (2625 binary)
Root relaxation presolved: 2639 rows, 86228 columns, 256222 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19346    5.4958550e+01   0.000000e+00   5.297715e+04      5s
   39126    5.4936558e+01   0.000000e+00   1.569836e+04     10s
   58323    5.4926827e+01   0.000000e+00   1.512132e+04     15s
   77684    5.4921291e+01   0.000000e+00   1.620476e+03     20s
   97445    5.4918886e+01   0.000000e+00   2.167467e+02     25s
  103085    5.5000000e+01   0.000000e+00   0.000000e+00     27s
  103085    5.5000000e+01   0.000000e+00   0.000000e+00     27s
  103085    5.5000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 5.500000e+01, 103085 iterations, 25.88 seconds (23.17 work units)
Total elapsed time = 46.66s (DegenMoves)
Total elapsed time = 50.02s (DegenMoves)

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

     0     0  postponed    0               -   55.00000      -     -   50s
H    0     0                       2.0000000   55.00000  2650%     -   50s

Explored 1 nodes (120620 simplex iterations) in 50.07 seconds (49.23 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 2 

Time limit reached
Best objective 2.000000000000e+00, best bound 5.500000000000e+01, gap 2650.0000%

Wrote result file './lp_solutions/grafo6880.44.sol'

