
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:09:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7035.37.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/grafo7035.37.lp
Reading time = 0.30 seconds
: 178834 rows, 2580 columns, 539041 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 178834 rows, 2580 columns and 539041 nonzeros
Model fingerprint: 0x1066904e
Variable types: 53 continuous, 2527 integer (2527 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 -0.0000000
Presolve removed 64444 rows and 24 columns
Presolve time: 1.34s
Presolved: 114390 rows, 2556 columns, 346291 nonzeros
Variable types: 0 continuous, 2556 integer (2503 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2550 rows, 116940 columns, 348847 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16805    7.0819643e+01   0.000000e+00   3.040383e+05      5s
   36998    5.8731728e+01   0.000000e+00   1.275175e+06     10s
   57003    5.8711952e+01   0.000000e+00   1.022706e+04     15s
   78538    5.8704571e+01   0.000000e+00   8.300880e+03     20s
   97081    5.9000000e+01   0.000000e+00   0.000000e+00     24s
   97081    5.9000000e+01   0.000000e+00   0.000000e+00     24s
   97081    5.9000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 5.900000e+01, 97081 iterations, 22.88 seconds (16.99 work units)

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

     0     0   59.00000    0 1652    6.00000   59.00000   883%     -   50s

Explored 1 nodes (109455 simplex iterations) in 50.03 seconds (43.36 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 -0 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.900000000000e+01, gap 883.3333%

Wrote result file './lp_solutions/grafo7035.37.sol'

