
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:22:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6007.45.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/grafo6007.45.lp
Reading time = 0.62 seconds
: 322983 rows, 2721 columns, 971349 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 322983 rows, 2721 columns and 971349 nonzeros
Model fingerprint: 0x50bb8bb0
Variable types: 51 continuous, 2670 integer (2670 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 134869 rows and 33 columns
Presolve time: 3.28s
Presolved: 188114 rows, 2688 columns, 567120 nonzeros
Variable types: 0 continuous, 2688 integer (2637 binary)
Root relaxation presolved: 2685 rows, 190799 columns, 569808 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    3380    1.5557561e+02   0.000000e+00   1.153124e+06      5s
   26985    4.3969799e+01   0.000000e+00   3.352967e+05     10s
   42374    4.1874392e+01   0.000000e+00   4.762545e+05     15s
   58475    4.1830153e+01   0.000000e+00   1.779315e+04     20s
   72965    4.1817524e+01   0.000000e+00   2.330626e+04     25s
   87455    4.1812532e+01   0.000000e+00   4.369389e+03     30s
   95839    4.2000000e+01   0.000000e+00   0.000000e+00     34s
   95839    4.2000000e+01   0.000000e+00   0.000000e+00     34s
   95839    4.2000000e+01   0.000000e+00   0.000000e+00     34s

Root relaxation: objective 4.200000e+01, 95839 iterations, 29.72 seconds (17.24 work units)

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

     0     0   42.00000    0 1256          -   42.00000      -     -   50s
H    0     0                       4.0000000   42.00000   950%     -   50s

Explored 1 nodes (103501 simplex iterations) in 50.09 seconds (35.07 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.200000000000e+01, gap 950.0000%

Wrote result file './lp_solutions/grafo6007.45.sol'

