
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:59:09 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5306.43.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/grafo5306.43.lp
Reading time = 0.47 seconds
: 240943 rows, 2787 columns, 725416 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 240943 rows, 2787 columns and 725416 nonzeros
Model fingerprint: 0xc1804ba0
Variable types: 53 continuous, 2734 integer (2734 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 3.0000000
Presolve removed 91336 rows and 33 columns
Presolve time: 2.49s
Presolved: 149607 rows, 2754 columns, 451951 nonzeros
Variable types: 0 continuous, 2754 integer (2701 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2751 rows, 152358 columns, 454705 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9925    8.4333224e+01   0.000000e+00   8.254513e+05      5s
   27951    5.6864683e+01   0.000000e+00   2.088063e+05     10s
   42858    5.2748394e+01   0.000000e+00   3.564378e+05     15s
   58420    5.2696767e+01   0.000000e+00   3.017939e+05     20s
   73972    5.2677959e+01   0.000000e+00   2.037121e+04     25s
   90172    5.2667515e+01   0.000000e+00   7.643963e+03     30s
  106372    5.2663067e+01   0.000000e+00   2.441073e+03     35s
  119477    5.3000000e+01   0.000000e+00   0.000000e+00     39s
  119477    5.3000000e+01   0.000000e+00   0.000000e+00     40s
  119477    5.3000000e+01   0.000000e+00   0.000000e+00     40s

Root relaxation: objective 5.300000e+01, 119477 iterations, 36.80 seconds (21.18 work units)
Total elapsed time = 40.12s (DegenMoves)

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

     0     0   53.00000    0 1603   13.00000   53.00000   308%     -   50s

Explored 1 nodes (124369 simplex iterations) in 50.07 seconds (32.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 3 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.300000000000e+01, gap 307.6923%

Wrote result file './lp_solutions/grafo5306.43.sol'

