
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:58:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3258.42.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/grafo3258.42.lp
Reading time = 0.81 seconds
: 401164 rows, 2789 columns, 1206179 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 401164 rows, 2789 columns and 1206179 nonzeros
Model fingerprint: 0xd2fa711f
Variable types: 53 continuous, 2736 integer (2736 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 175285 rows and 19 columns
Presolve time: 3.97s
Presolved: 225879 rows, 2770 columns, 680806 nonzeros
Variable types: 0 continuous, 2770 integer (2717 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2761 rows, 228640 columns, 683576 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    6.7506000e+02   0.000000e+00   7.991072e+05      6s
   21721    9.3760945e+01   0.000000e+00   3.598433e+05     10s
   39273    5.1964859e+01   0.000000e+00   4.788908e+05     16s
   52040    4.6884066e+01   0.000000e+00   1.517498e+05     20s
   67558    4.4823028e+01   0.000000e+00   1.376461e+05     25s
   82240    4.4789880e+01   0.000000e+00   4.095211e+04     30s
   97830    4.4775211e+01   0.000000e+00   9.291616e+03     35s
  113388    4.4766485e+01   0.000000e+00   3.541479e+04     40s
  127969    4.4763553e+01   0.000000e+00   1.594651e+02     45s
  137700    4.5000000e+01   0.000000e+00   0.000000e+00     49s
  137700    4.5000000e+01   0.000000e+00   0.000000e+00     49s
  137700    4.5000000e+01   0.000000e+00   0.000000e+00     49s

Root relaxation: objective 4.500000e+01, 137700 iterations, 44.54 seconds (25.96 work units)

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

     0     0   45.00000    0 1493    8.00000   45.00000   463%     -   50s

Explored 1 nodes (137766 simplex iterations) in 50.10 seconds (30.28 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.500000000000e+01, gap 462.5000%

Wrote result file './lp_solutions/grafo3258.42.sol'

