
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:13:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9875.38.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/grafo9875.38.lp
Reading time = 0.12 seconds
: 70046 rows, 2076 columns, 211946 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 70046 rows, 2076 columns and 211946 nonzeros
Model fingerprint: 0x9df125b7
Variable types: 44 continuous, 2032 integer (2032 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 16570 rows and 36 columns
Presolve time: 0.48s
Presolved: 53476 rows, 2040 columns, 162883 nonzeros
Variable types: 0 continuous, 2040 integer (1996 binary)
Root relaxation presolved: 2037 rows, 55513 columns, 164923 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25557    4.2958838e+01   0.000000e+00   1.421956e+02      5s
   26959    4.3000000e+01   0.000000e+00   0.000000e+00      5s
   26959    4.3000000e+01   0.000000e+00   0.000000e+00      5s
   26959    4.3000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.300000e+01, 26959 iterations, 4.74 seconds (4.02 work units)
Total elapsed time = 11.85s (DegenMoves)
Total elapsed time = 15.04s (DegenMoves)

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

     0     0   43.00000    0  488          -   43.00000      -     -   15s
H    0     0                      11.0000000   43.00000   291%     -   17s
H    0     0                      13.0000000   43.00000   231%     -   22s
     0     0   43.00000    0  685   13.00000   43.00000   231%     -   22s
H    0     0                      14.0000000   43.00000   207%     -   23s
     0     0   43.00000    0  645   14.00000   43.00000   207%     -   25s
     0     0   43.00000    0  543   14.00000   43.00000   207%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 32
  Cover: 23
  Clique: 13
  MIR: 87
  Zero half: 62
  RLT: 58
  BQP: 1

Explored 1 nodes (70902 simplex iterations) in 50.05 seconds (49.82 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 13 11 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.300000000000e+01, gap 207.1429%

Wrote result file './lp_solutions/grafo9875.38.sol'

