
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:54:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1562.49.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/grafo1562.49.lp
Reading time = 0.15 seconds
: 72481 rows, 2234 columns, 218815 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 72481 rows, 2234 columns and 218815 nonzeros
Model fingerprint: 0x69ae67bb
Variable types: 39 continuous, 2195 integer (2195 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 13733 rows and 52 columns
Presolve time: 0.56s
Presolved: 58748 rows, 2182 columns, 177976 nonzeros
Variable types: 0 continuous, 2182 integer (2143 binary)
Root relaxation presolved: 2168 rows, 60916 columns, 180158 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23948    2.9962010e+01   0.000000e+00   4.652079e+02      5s
   31523    3.0000000e+01   0.000000e+00   0.000000e+00      7s
   31523    3.0000000e+01   0.000000e+00   0.000000e+00      7s
   31523    3.0000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.000000e+01, 31523 iterations, 6.02 seconds (3.89 work units)
Total elapsed time = 11.72s (DegenMoves)

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

     0     0   30.00000    0  304          -   30.00000      -     -   12s
H    0     0                       8.0000000   30.00000   275%     -   14s
     0     0   30.00000    0  434    8.00000   30.00000   275%     -   16s
H    0     0                       9.0000000   30.00000   233%     -   17s
H    0     0                      10.0000000   30.00000   200%     -   17s
     0     0   30.00000    0  426   10.00000   30.00000   200%     -   17s
     0     0   30.00000    0  438   10.00000   30.00000   200%     -   27s
     0     0   30.00000    0  442   10.00000   30.00000   200%     -   28s
     0     0   30.00000    0  369   10.00000   30.00000   200%     -   37s
     0     0   30.00000    0  358   10.00000   30.00000   200%     -   38s
     0     0   30.00000    0  275   10.00000   30.00000   200%     -   49s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Clique: 2
  MIR: 25
  Zero half: 4
  RLT: 17

Explored 1 nodes (72858 simplex iterations) in 50.11 seconds (33.93 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 9 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.000000000000e+01, gap 200.0000%

Wrote result file './lp_solutions/grafo1562.49.sol'

