
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:06:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3369.41.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/grafo3369.41.lp
Reading time = 0.95 seconds
: 492480 rows, 2830 columns, 1480162 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 492480 rows, 2830 columns and 1480162 nonzeros
Model fingerprint: 0x06ff5a88
Variable types: 53 continuous, 2777 integer (2777 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 225715 rows and 8 columns
Presolve time: 4.58s
Presolved: 266765 rows, 2822 columns, 803402 nonzeros
Variable types: 0 continuous, 2822 integer (2769 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2815 rows, 269580 columns, 806224 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    1.1289400e+03   0.000000e+00   2.000869e+06      7s
   19800    1.2818984e+02   0.000000e+00   8.686887e+05     10s
   39369    9.6829473e+01   0.000000e+00   1.382155e+05     15s
   59429    7.1952366e+01   0.000000e+00   4.677660e+05     20s
   75061    6.0855999e+01   0.000000e+00   2.798309e+05     25s
   90128    6.0801814e+01   0.000000e+00   4.406309e+04     30s
  106267    6.0772095e+01   0.000000e+00   2.294874e+04     35s
  121243    6.0758126e+01   0.000000e+00   9.666368e+03     40s
  136219    6.0751132e+01   0.000000e+00   3.809690e+03     45s

Root relaxation: time limit, 150808 iterations, 44.52 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         3.00000  436.00000      -     -   50s

Explored 1 nodes (150808 simplex iterations) in 50.05 seconds (31.21 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 3 

Time limit reached
Best objective 3.000000000000e+00, best bound 4.360000000000e+02, gap 14433.3333%

Wrote result file './lp_solutions/grafo3369.41.sol'

