
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:06:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1186.47.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/grafo1186.47.lp
Reading time = 0.71 seconds
: 367879 rows, 3314 columns, 1106729 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 367879 rows, 3314 columns and 1106729 nonzeros
Model fingerprint: 0xe1eafd65
Variable types: 57 continuous, 3257 integer (3257 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 150795 rows and 14 columns
Presolve time: 3.34s
Presolved: 217084 rows, 3300 columns, 654775 nonzeros
Variable types: 0 continuous, 3300 integer (3243 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3294 rows, 220378 columns, 658075 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    2367    3.4450106e+02   0.000000e+00   1.721116e+06      5s
   23415    1.3616001e+02   0.000000e+00   5.347676e+05     10s
   40051    8.5340234e+01   0.000000e+00   8.515867e+06     16s
   51785    7.0979401e+01   0.000000e+00   7.397853e+05     20s
   63422    6.9907670e+01   0.000000e+00   1.444879e+05     25s
   76129    6.7849348e+01   0.000000e+00   2.007433e+05     30s
   88171    6.7802186e+01   0.000000e+00   3.505704e+04     35s
  101043    6.7781916e+01   0.000000e+00   8.395347e+04     40s
  113055    6.7771570e+01   0.000000e+00   1.275129e+04     45s

Root relaxation: time limit, 123831 iterations, 45.98 seconds (27.05 work units)

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

     0     0          -    0         8.00000  428.00000  5250%     -   50s

Explored 1 nodes (123831 simplex iterations) in 50.04 seconds (30.19 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.280000000000e+02, gap 5250.0000%

Wrote result file './lp_solutions/grafo1186.47.sol'

