
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:38:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7007.41.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/grafo7007.41.lp
Reading time = 0.54 seconds
: 275319 rows, 2559 columns, 828331 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 275319 rows, 2559 columns and 828331 nonzeros
Model fingerprint: 0x16c5aa76
Variable types: 51 continuous, 2508 integer (2508 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 113559 rows and 28 columns
Presolve time: 2.88s
Presolved: 161760 rows, 2531 columns, 488061 nonzeros
Variable types: 0 continuous, 2531 integer (2480 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2528 rows, 164288 columns, 490592 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8241    1.0887528e+02   0.000000e+00   2.236774e+06      5s
   27903    6.5587908e+01   0.000000e+00   9.127587e+06     10s
   45799    4.7865963e+01   0.000000e+00   2.758037e+05     15s
   63042    4.7804656e+01   0.000000e+00   9.216947e+04     20s
   80896    4.7787566e+01   0.000000e+00   1.009091e+04     25s
   98032    4.7780479e+01   0.000000e+00   3.534559e+03     30s
  115168    4.7778189e+01   0.000000e+00   1.801395e+00     35s
  115694    4.8000000e+01   0.000000e+00   0.000000e+00     35s
  115694    4.8000000e+01   0.000000e+00   0.000000e+00     35s
  115694    4.8000000e+01   0.000000e+00   0.000000e+00     35s

Root relaxation: objective 4.800000e+01, 115694 iterations, 31.94 seconds (18.91 work units)

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

     0     0   48.00000    0 1456    8.00000   48.00000   500%     -   50s

Explored 1 nodes (122114 simplex iterations) in 50.07 seconds (34.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.800000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo7007.41.sol'

