
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:51:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1408.49.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/grafo1408.49.lp
Reading time = 0.23 seconds
: 123346 rows, 2951 columns, 372555 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 123346 rows, 2951 columns and 372555 nonzeros
Model fingerprint: 0x7e4dfbf2
Variable types: 52 continuous, 2899 integer (2899 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 25119 rows and 7 columns
Presolve time: 0.93s
Presolved: 98227 rows, 2944 columns, 297762 nonzeros
Variable types: 0 continuous, 2944 integer (2892 binary)
Root relaxation presolved: 2935 rows, 101162 columns, 300706 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15084    4.9717175e+01   0.000000e+00   5.605290e+04      5s
   32178    4.9678660e+01   0.000000e+00   1.167802e+04     10s
   46830    4.9673284e+01   0.000000e+00   3.166523e+00     15s
   47449    5.0000000e+01   0.000000e+00   0.000000e+00     15s
   47449    5.0000000e+01   0.000000e+00   0.000000e+00     15s
   47449    5.0000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.000000e+01, 47449 iterations, 14.19 seconds (9.64 work units)
Total elapsed time = 28.95s (DegenMoves)
Total elapsed time = 30.39s (DegenMoves)

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

     0     0   50.00000    0  443          -   50.00000      -     -   30s
H    0     0                      10.0000000   50.00000   400%     -   33s
     0     0   50.00000    0  828   10.00000   50.00000   400%     -   46s
H    0     0                      12.0000000   50.00000   317%     -   47s
     0     0   50.00000    0  832   12.00000   50.00000   317%     -   48s

Cutting planes:
  Gomory: 4
  Cover: 13
  Clique: 10
  MIR: 122
  Zero half: 86
  RLT: 25

Explored 1 nodes (67640 simplex iterations) in 50.57 seconds (37.95 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 10 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.000000000000e+01, gap 316.6667%

Wrote result file './lp_solutions/grafo1408.49.sol'

