
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:57:50 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2781.41.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/grafo2781.41.lp
Reading time = 0.43 seconds
: 266666 rows, 3098 columns, 803175 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 266666 rows, 3098 columns and 803175 nonzeros
Model fingerprint: 0x011fec9e
Variable types: 59 continuous, 3039 integer (3039 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, 6e+01]
Presolve removed 99711 rows and 12 columns
Presolve time: 1.79s
Presolved: 166955 rows, 3086 columns, 504512 nonzeros
Variable types: 0 continuous, 3086 integer (3027 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3070 rows, 170025 columns, 507598 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12684    1.0447878e+02   0.000000e+00   1.305401e+06      5s
   30654    7.4798431e+01   0.000000e+00   6.284409e+05     10s
   47831    7.2711648e+01   0.000000e+00   7.143998e+04     15s
   64931    7.2685786e+01   0.000000e+00   1.364781e+04     20s
   81347    7.2677372e+01   0.000000e+00   4.150140e+03     25s
   97763    7.2675223e+01   0.000000e+00   6.093145e+01     30s
   99195    7.3000000e+01   0.000000e+00   0.000000e+00     31s
   99195    7.3000000e+01   0.000000e+00   0.000000e+00     31s
   99195    7.3000000e+01   0.000000e+00   0.000000e+00     31s

Root relaxation: objective 7.300000e+01, 99195 iterations, 28.52 seconds (22.14 work units)

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

     0     0   73.00000    0 1669    8.00000   73.00000   812%     -   50s

Explored 1 nodes (106237 simplex iterations) in 50.05 seconds (42.98 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 7.300000000000e+01, gap 812.5000%

Wrote result file './lp_solutions/grafo2781.41.sol'

