
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:05:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7076.44.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/grafo7076.44.lp
Reading time = 0.21 seconds
: 107344 rows, 2337 columns, 323892 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 107344 rows, 2337 columns and 323892 nonzeros
Model fingerprint: 0x06e0de0b
Variable types: 46 continuous, 2291 integer (2291 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 27783 rows and 28 columns
Presolve time: 0.95s
Presolved: 79561 rows, 2309 columns, 240943 nonzeros
Variable types: 0 continuous, 2309 integer (2263 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2309 rows, 81870 columns, 243252 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17496    3.9965245e+01   0.000000e+00   4.550516e+05      5s
   36118    3.9937383e+01   0.000000e+00   2.775153e+04     10s
   53979    3.9929583e+01   0.000000e+00   2.226660e+03     15s
   68148    4.0000000e+01   0.000000e+00   0.000000e+00     19s
   68148    4.0000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.000000e+01, 68148 iterations, 17.98 seconds (12.15 work units)
Total elapsed time = 32.98s (DegenMoves)
Total elapsed time = 37.60s (DegenMoves)

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

     0     0   40.00000    0  457    3.00000   40.00000  1233%     -   39s
H    0     0                       6.0000000   40.00000   567%     -   39s
H    0     0                       8.0000000   40.00000   400%     -   39s
H    0     0                      10.0000000   40.00000   300%     -   39s
     0     0          -    0        10.00000   40.00000   300%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 47
  Clique: 19
  MIR: 133
  GUB cover: 8
  Zero half: 51
  RLT: 56
  BQP: 2

Explored 1 nodes (88962 simplex iterations) in 50.02 seconds (41.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 10 8 6 3 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.000000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo7076.44.sol'

