
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 03:51:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11494.34.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/grafo11494.34.lp
Reading time = 0.33 seconds
: 202432 rows, 1503 columns, 608432 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 202432 rows, 1503 columns and 608432 nonzeros
Model fingerprint: 0xff5fb1d3
Variable types: 34 continuous, 1469 integer (1469 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 101075 rows and 13 columns
Presolve time: 1.59s
Presolved: 101357 rows, 1490 columns, 305493 nonzeros
Variable types: 0 continuous, 1490 integer (1456 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 1490 rows, 102847 columns, 306983 nonzeros


Starting sifting (using dual simplex for sub-problems)...

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0        351    -infinity     -5.3334000e+00      2s
       1       3061  -3.5503895e+02  -7.5053351e+00      2s
       2       3927  -3.5503895e+02  -7.6490367e+00      2s
       3       4732  -3.5503895e+02  -7.6969037e+00      2s
       4       5524  -3.5503895e+02  -7.7926843e+00      2s
       5       6306  -3.5503895e+02  -7.8885156e+00      2s
       6       7172  -3.5503895e+02  -7.9363265e+00      2s
       7       7965  -3.5503895e+02  -7.9843628e+00      2s

Sifting complete


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32665    3.5989545e+01   0.000000e+00   1.127835e+05      5s
   70286    3.6000000e+01   0.000000e+00   0.000000e+00     10s
   70286    3.6000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 3.600000e+01, 70286 iterations, 7.94 seconds (5.57 work units)
Total elapsed time = 17.09s (DegenMoves)

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

     0     0   36.00000    0  267    8.00000   36.00000   350%     -   20s
     0     0   36.00000    0  425    8.00000   36.00000   350%     -   23s
     0     0   36.00000    0  426    8.00000   36.00000   350%     -   24s
     0     0   36.00000    0  425    8.00000   36.00000   350%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 50
  Cover: 17
  Clique: 26
  MIR: 88
  StrongCG: 1
  Zero half: 59
  RLT: 62
  BQP: 2

Explored 1 nodes (94488 simplex iterations) in 50.05 seconds (63.23 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.600000000000e+01, gap 350.0000%

Wrote result file './lp_solutions/grafo11494.34.sol'

