
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:23:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6181.40.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/grafo6181.40.lp
Reading time = 0.26 seconds
: 164061 rows, 2770 columns, 494982 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 164061 rows, 2770 columns and 494982 nonzeros
Model fingerprint: 0x188415a0
Variable types: 56 continuous, 2714 integer (2714 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 48950 rows and 27 columns
Presolve time: 1.36s
Presolved: 115111 rows, 2743 columns, 348607 nonzeros
Variable types: 0 continuous, 2743 integer (2687 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2734 rows, 117845 columns, 351350 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15861    6.1948687e+01   0.000000e+00   1.293025e+05      5s
   35206    5.7759254e+01   0.000000e+00   3.270762e+04     10s
   55366    5.7706821e+01   0.000000e+00   1.266106e+04     15s
   75526    5.7695279e+01   0.000000e+00   3.114485e+03     20s
   83551    5.8000000e+01   0.000000e+00   0.000000e+00     22s
   83551    5.8000000e+01   0.000000e+00   0.000000e+00     22s
   83551    5.8000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.800000e+01, 83551 iterations, 20.62 seconds (16.47 work units)
Total elapsed time = 43.78s (DegenMoves)

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

     0     0   58.00000    0  880    6.00000   58.00000   867%     -   50s

Explored 1 nodes (102192 simplex iterations) in 50.05 seconds (51.37 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.800000000000e+01, gap 866.6667%

Wrote result file './lp_solutions/grafo6181.40.sol'

