
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:17:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3798.41.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/grafo3798.41.lp
Reading time = 0.22 seconds
: 119129 rows, 2131 columns, 359016 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 119129 rows, 2131 columns and 359016 nonzeros
Model fingerprint: 0xb950ce01
Variable types: 42 continuous, 2089 integer (2089 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 41856 rows and 11 columns
Presolve time: 0.92s
Presolved: 77273 rows, 2120 columns, 233923 nonzeros
Variable types: 0 continuous, 2120 integer (2078 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2107 rows, 79380 columns, 236043 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18779    4.4804810e+01   0.000000e+00   9.835855e+03      5s
   39656    4.5000000e+01   0.000000e+00   0.000000e+00     10s
   39656    4.5000000e+01   0.000000e+00   0.000000e+00     10s
   39656    4.5000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.500000e+01, 39656 iterations, 8.65 seconds (5.56 work units)
Total elapsed time = 21.43s (DegenMoves)
Total elapsed time = 25.03s (DegenMoves)

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

     0     0   45.00000    0  470   12.00000   45.00000   275%     -   27s
     0     0   45.00000    0  884   12.00000   45.00000   275%     -   44s
     0     0   45.00000    0  872   12.00000   45.00000   275%     -   45s

Cutting planes:
  Gomory: 2
  Lift-and-project: 14
  Cover: 2
  Clique: 20
  MIR: 142
  Zero half: 144
  RLT: 22
  BQP: 1

Explored 1 nodes (63448 simplex iterations) in 50.42 seconds (43.35 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 12 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.500000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo3798.41.sol'

