
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:12:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6343.43.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/grafo6343.43.lp
Reading time = 0.14 seconds
: 88266 rows, 2518 columns, 267029 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 88266 rows, 2518 columns and 267029 nonzeros
Model fingerprint: 0x1be2b14c
Variable types: 51 continuous, 2467 integer (2467 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 12717 rows and 41 columns
Presolve time: 0.63s
Presolved: 75549 rows, 2477 columns, 229367 nonzeros
Variable types: 0 continuous, 2477 integer (2426 binary)
Root relaxation presolved: 2477 rows, 78026 columns, 231844 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23963    4.4741264e+01   0.000000e+00   1.395652e+04      5s
   36884    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   36884    4.5000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.500000e+01, 36884 iterations, 6.92 seconds (5.60 work units)
Total elapsed time = 17.92s (DegenMoves)
Total elapsed time = 20.17s (DegenMoves)

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

     0     0   45.00000    0  615          -   45.00000      -     -   20s
H    0     0                       5.0000000   45.00000   800%     -   20s
H    0     0                       6.0000000   45.00000   650%     -   20s
H    0     0                       7.0000000   45.00000   543%     -   23s
H    0     0                       8.0000000   45.00000   462%     -   23s
     0     0   45.00000    0  997    8.00000   45.00000   462%     -   38s
H    0     0                       9.0000000   45.00000   400%     -   39s
     0     0   45.00000    0  932    9.00000   45.00000   400%     -   44s

Cutting planes:
  Gomory: 1
  Lift-and-project: 19
  Cover: 5
  Clique: 2
  MIR: 123
  StrongCG: 1
  GUB cover: 3
  Zero half: 23
  RLT: 41

Explored 1 nodes (63791 simplex iterations) in 50.16 seconds (42.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 9 8 7 ... 5

Time limit reached
Best objective 9.000000000000e+00, best bound 4.500000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo6343.43.sol'

