
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:37:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7614.42.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/grafo7614.42.lp
Reading time = 0.71 seconds
: 321882 rows, 2613 columns, 967966 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 321882 rows, 2613 columns and 967966 nonzeros
Model fingerprint: 0x43246b2d
Variable types: 50 continuous, 2563 integer (2563 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 -0.0000000
Presolve removed 140283 rows and 21 columns
Presolve time: 3.08s
Presolved: 181599 rows, 2592 columns, 547498 nonzeros
Variable types: 0 continuous, 2592 integer (2542 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2592 rows, 184191 columns, 550090 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7064    1.6459048e+02   0.000000e+00   4.121074e+05      5s
   29736    7.2663956e+01   0.000000e+00   1.640244e+05     11s
   44396    6.0906495e+01   0.000000e+00   7.701327e+04     15s
   60511    5.9842469e+01   0.000000e+00   6.176287e+04     20s
   77441    5.9810344e+01   0.000000e+00   7.089488e+03     25s
   94346    5.9797538e+01   0.000000e+00   1.244159e+04     30s
  111251    5.9791426e+01   0.000000e+00   3.707124e+03     35s
  127269    6.0000000e+01   0.000000e+00   0.000000e+00     40s
  127269    6.0000000e+01   0.000000e+00   0.000000e+00     40s

Root relaxation: objective 6.000000e+01, 127269 iterations, 36.58 seconds (22.41 work units)
Total elapsed time = 40.35s (DegenMoves)

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

     0     0   60.00000    0 1452    8.00000   60.00000   650%     -   50s

Explored 1 nodes (131206 simplex iterations) in 50.08 seconds (33.88 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 6.000000000000e+01, gap 650.0000%

Wrote result file './lp_solutions/grafo7614.42.sol'

