
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:22:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1041.49.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/grafo1041.49.lp
Reading time = 0.64 seconds
: 143907 rows, 2693 columns, 433842 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 143907 rows, 2693 columns and 433842 nonzeros
Model fingerprint: 0xe546a2a6
Variable types: 49 continuous, 2644 integer (2644 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 37977 rows and 26 columns
Presolve time: 1.25s
Presolved: 105930 rows, 2667 columns, 320317 nonzeros
Variable types: 0 continuous, 2667 integer (2618 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2658 rows, 108588 columns, 322984 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17584    3.4788216e+01   0.000000e+00   5.210775e+04      5s
   36952    3.5000000e+01   0.000000e+00   0.000000e+00     10s
   36952    3.5000000e+01   0.000000e+00   0.000000e+00     10s
   36952    3.5000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 3.500000e+01, 36952 iterations, 8.20 seconds (6.97 work units)
Total elapsed time = 18.88s (DegenMoves)
Total elapsed time = 32.17s (DegenMoves)

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

     0     0   35.00000    0  313   11.00000   35.00000   218%     -   34s
H    0     0                      13.0000000   35.00000   169%     -   34s
     0     0   35.00000    0  580   13.00000   35.00000   169%     -   41s
     0     0   35.00000    0  565   13.00000   35.00000   169%     -   42s
     0     0   35.00000    0  516   13.00000   35.00000   169%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 24
  Cover: 12
  Clique: 18
  MIR: 87
  GUB cover: 1
  Zero half: 20
  RLT: 49
  BQP: 3

Explored 1 nodes (64858 simplex iterations) in 50.04 seconds (54.53 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 11 

Time limit reached
Best objective 1.300000000000e+01, best bound 3.500000000000e+01, gap 169.2308%

Wrote result file './lp_solutions/grafo1041.49.sol'

