
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:27:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7636.43.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/grafo7636.43.lp
Reading time = 0.91 seconds
: 481349 rows, 2854 columns, 1446685 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 481349 rows, 2854 columns and 1446685 nonzeros
Model fingerprint: 0x858af6f2
Variable types: 52 continuous, 2802 integer (2802 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 220534 rows and 4 columns
Presolve time: 4.11s
Presolved: 260815 rows, 2850 columns, 785465 nonzeros
Variable types: 0 continuous, 2850 integer (2798 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2837 rows, 263652 columns, 788315 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    8.0882000e+02   0.000000e+00   9.840030e+05      6s
   28057    1.3053412e+02   0.000000e+00   1.090632e+06     11s
   42439    1.0277214e+02   0.000000e+00   1.807920e+05     15s
   58085    8.4593580e+01   0.000000e+00   1.740946e+05     21s
   72024    6.2864121e+01   0.000000e+00   1.570381e+05     25s
   86650    5.9811717e+01   0.000000e+00   1.566657e+05     30s
  102286    5.9780624e+01   0.000000e+00   7.810353e+04     35s
  119026    5.9766340e+01   0.000000e+00   2.679010e+04     40s
  134651    5.9760239e+01   0.000000e+00   1.664573e+04     45s

Root relaxation: time limit, 150248 iterations, 45.07 seconds (27.67 work units)

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

     0     0          -    0         6.00000  429.00000  7050%     -   50s

Explored 1 nodes (150248 simplex iterations) in 50.04 seconds (31.56 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 4.290000000000e+02, gap 7050.0000%

Wrote result file './lp_solutions/grafo7636.43.sol'

