
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:53:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4090.43.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/grafo4090.43.lp
Reading time = 0.93 seconds
: 321111 rows, 3018 columns, 966232 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 321111 rows, 3018 columns and 966232 nonzeros
Model fingerprint: 0x59266ff8
Variable types: 56 continuous, 2962 integer (2962 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]
Found heuristic solution: objective -0.0000000
Presolve removed 130258 rows and 8 columns
Presolve time: 3.14s
Presolved: 190853 rows, 3010 columns, 575888 nonzeros
Variable types: 0 continuous, 3010 integer (2954 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3000 rows, 193853 columns, 578898 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    4884    1.5310898e+02   0.000000e+00   7.699106e+06      5s
   22992    8.2853474e+01   0.000000e+00   1.668570e+06     10s
   34396    7.5095651e+01   0.000000e+00   6.227079e+05     15s
   45334    6.9696713e+01   0.000000e+00   4.259967e+05     20s
   57768    6.9648441e+01   0.000000e+00   3.724978e+04     25s
   69423    6.8625735e+01   0.000000e+00   5.459170e+04     30s
   82632    6.8613797e+01   0.000000e+00   2.637724e+04     35s
   95841    6.8607763e+01   0.000000e+00   2.002256e+04     40s
  108273    6.8604371e+01   0.000000e+00   1.666329e+03     45s
  121482    6.8602609e+01   0.000000e+00   1.985790e+02     50s

Root relaxation: time limit, 121482 iterations, 46.44 seconds (25.55 work units)

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

     0     0          -    0         8.00000  378.00000  4625%     -   50s

Explored 1 nodes (121482 simplex iterations) in 50.04 seconds (28.15 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.780000000000e+02, gap 4625.0000%

Wrote result file './lp_solutions/grafo4090.43.sol'

