
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:42:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7676.45.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/grafo7676.45.lp
Reading time = 0.50 seconds
: 248323 rows, 3213 columns, 748055 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 248323 rows, 3213 columns and 748055 nonzeros
Model fingerprint: 0x5d9a2a03
Variable types: 58 continuous, 3155 integer (3155 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, 6e+01]
Presolve removed 114375 rows and 66 columns
Presolve time: 1.93s
Presolved: 133948 rows, 3147 columns, 405507 nonzeros
Variable types: 0 continuous, 3147 integer (3089 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 3141 rows, 137089 columns, 408654 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   10559    8.2557759e+01   0.000000e+00   2.140920e+05      5s
   22630    6.9747517e+01   0.000000e+00   1.470790e+05     10s
   36462    6.9668263e+01   0.000000e+00   3.752457e+04     15s
   48698    6.9646880e+01   0.000000e+00   1.141072e+04     20s
   60934    6.9638890e+01   0.000000e+00   1.369074e+03     25s
   72111    6.9636665e+01   0.000000e+00   3.567660e+01     30s
   73819    7.0000000e+01   0.000000e+00   0.000000e+00     31s
   73819    7.0000000e+01   0.000000e+00   0.000000e+00     31s
   73819    7.0000000e+01   0.000000e+00   0.000000e+00     31s

Root relaxation: objective 7.000000e+01, 73819 iterations, 28.64 seconds (17.06 work units)

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

     0     0   70.00000    0 1555    8.00000   70.00000   775%     -   50s

Explored 1 nodes (81426 simplex iterations) in 50.07 seconds (34.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 7.000000000000e+01, gap 775.0000%

Wrote result file './lp_solutions/grafo7676.45.sol'

