
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:27:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6797.39.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/grafo6797.39.lp
Reading time = 0.36 seconds
: 227685 rows, 2607 columns, 685532 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 227685 rows, 2607 columns and 685532 nonzeros
Model fingerprint: 0x1f6e8cf1
Variable types: 52 continuous, 2555 integer (2555 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]
Found heuristic solution: objective 2.0000000
Presolve removed 91416 rows and 19 columns
Presolve time: 1.54s
Presolved: 136269 rows, 2588 columns, 411706 nonzeros
Variable types: 0 continuous, 2588 integer (2536 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2582 rows, 138851 columns, 414294 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17751    9.2450268e+01   0.000000e+00   4.117786e+07      5s
   38727    6.4761361e+01   0.000000e+00   6.496133e+04     10s
   60778    6.4712265e+01   0.000000e+00   1.203206e+04     15s
   80938    6.4706527e+01   0.000000e+00   1.218933e-01     20s
   81201    6.5000000e+01   0.000000e+00   0.000000e+00     20s
   81201    6.5000000e+01   0.000000e+00   0.000000e+00     20s
   81201    6.5000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 6.500000e+01, 81201 iterations, 18.43 seconds (14.54 work units)

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

     0     0   65.00000    0 1377   10.00000   65.00000   550%     -   50s

Explored 1 nodes (94503 simplex iterations) in 50.05 seconds (46.40 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 2 

Time limit reached
Best objective 1.000000000000e+01, best bound 6.500000000000e+01, gap 550.0000%

Wrote result file './lp_solutions/grafo6797.39.sol'

