
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:05:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6551.49.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/grafo6551.49.lp
Reading time = 0.34 seconds
: 174984 rows, 3344 columns, 528023 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 174984 rows, 3344 columns and 528023 nonzeros
Model fingerprint: 0x165fe5ef
Variable types: 59 continuous, 3285 integer (3285 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 40607 rows and 0 columns
Presolve time: 1.36s
Presolved: 134377 rows, 3344 columns, 406699 nonzeros
Variable types: 0 continuous, 3344 integer (3285 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 3296 rows, 137673 columns, 410043 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13010    5.9849251e+01   0.000000e+00   3.922104e+05      5s
   25377    5.2739891e+01   0.000000e+00   1.936361e+05     10s
   37449    5.2672088e+01   0.000000e+00   1.898190e+05     15s
   50008    5.2630798e+01   0.000000e+00   4.028384e+04     20s
   62020    5.2614396e+01   0.000000e+00   2.086741e+04     25s
   74032    5.2605025e+01   0.000000e+00   6.467370e+03     30s
   85498    5.2599963e+01   0.000000e+00   5.825102e+03     35s
   95326    5.2597601e+01   0.000000e+00   1.607532e+03     40s
  106246    5.2596236e+01   0.000000e+00   2.473912e+02     45s
  112306    5.3000000e+01   0.000000e+00   0.000000e+00     48s
  112306    5.3000000e+01   0.000000e+00   0.000000e+00     48s
  112306    5.3000000e+01   0.000000e+00   0.000000e+00     48s

Root relaxation: objective 5.300000e+01, 112306 iterations, 46.44 seconds (25.90 work units)

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

     0     0   53.00000    0 1981    6.00000   53.00000   783%     -   50s

Explored 1 nodes (112693 simplex iterations) in 50.06 seconds (29.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 -0 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.300000000000e+01, gap 783.3333%

Wrote result file './lp_solutions/grafo6551.49.sol'

