
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:50:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1187.49.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/grafo1187.49.lp
Reading time = 0.27 seconds
: 153080 rows, 3318 columns, 462311 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 153080 rows, 3318 columns and 462311 nonzeros
Model fingerprint: 0x266b9bce
Variable types: 58 continuous, 3260 integer (3260 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 30479 rows and 17 columns
Presolve time: 1.21s
Presolved: 122601 rows, 3301 columns, 371520 nonzeros
Variable types: 0 continuous, 3301 integer (3243 binary)
Root relaxation presolved: 3288 rows, 125889 columns, 374821 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11578    5.2742558e+01   0.000000e+00   6.362542e+05      5s
   25273    5.0601647e+01   0.000000e+00   1.733184e+05     10s
   39313    5.0566915e+01   0.000000e+00   1.000107e+04     15s
   52417    5.0559666e+01   0.000000e+00   1.340731e+03     20s
   57749    5.1000000e+01   0.000000e+00   0.000000e+00     23s
   57749    5.1000000e+01   0.000000e+00   0.000000e+00     23s
   57749    5.1000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.100000e+01, 57749 iterations, 21.17 seconds (14.57 work units)
Total elapsed time = 40.44s (DegenMoves)

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

     0     0   51.00000    0  693          -   51.00000      -     -   50s
H    0     0                       7.0000000   51.00000   629%     -   50s

Explored 1 nodes (74909 simplex iterations) in 50.09 seconds (44.65 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.100000000000e+01, gap 628.5714%

Wrote result file './lp_solutions/grafo1187.49.sol'

