
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:19:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4001.41.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/grafo4001.41.lp
Reading time = 0.41 seconds
: 221275 rows, 2262 columns, 665722 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 221275 rows, 2262 columns and 665722 nonzeros
Model fingerprint: 0x161780dd
Variable types: 45 continuous, 2217 integer (2217 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]
Found heuristic solution: objective 3.0000000
Presolve removed 92763 rows and 15 columns
Presolve time: 1.97s
Presolved: 128512 rows, 2247 columns, 387672 nonzeros
Variable types: 0 continuous, 2247 integer (2202 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2244 rows, 130756 columns, 389919 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15690    8.1629559e+01   0.000000e+00   1.965458e+05      5s
   36131    4.8850902e+01   0.000000e+00   2.983762e+04     10s
   56822    4.8812440e+01   0.000000e+00   1.434918e+04     15s
   75980    4.9000000e+01   0.000000e+00   0.000000e+00     20s
   75980    4.9000000e+01   0.000000e+00   0.000000e+00     20s
   75980    4.9000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 4.900000e+01, 75980 iterations, 17.76 seconds (11.13 work units)
Total elapsed time = 35.84s (DegenMoves)

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

     0     0   49.00000    0  416   12.00000   49.00000   308%     -   40s
     0     0          -    0        12.00000   49.00000   308%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 47
  Clique: 33
  MIR: 161
  GUB cover: 2
  Zero half: 35
  RLT: 99
  BQP: 5

Explored 1 nodes (90124 simplex iterations) in 50.04 seconds (41.98 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 3 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.900000000000e+01, gap 308.3333%

Wrote result file './lp_solutions/grafo4001.41.sol'

