
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:04:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6698.37.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/grafo6698.37.lp
Reading time = 0.29 seconds
: 175047 rows, 2244 columns, 527199 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 175047 rows, 2244 columns and 527199 nonzeros
Model fingerprint: 0x72734376
Variable types: 48 continuous, 2196 integer (2196 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 68795 rows and 22 columns
Presolve time: 1.38s
Presolved: 106252 rows, 2222 columns, 321172 nonzeros
Variable types: 0 continuous, 2222 integer (2174 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2219 rows, 108471 columns, 323394 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19442    5.6976986e+01   0.000000e+00   7.145281e+04      5s
   43807    5.2825286e+01   0.000000e+00   5.350382e+04     10s
   69151    5.2805496e+01   0.000000e+00   5.763684e+02     15s
   76134    5.3000000e+01   0.000000e+00   0.000000e+00     16s
   76134    5.3000000e+01   0.000000e+00   0.000000e+00     16s
   76134    5.3000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.300000e+01, 76134 iterations, 14.82 seconds (10.93 work units)
Total elapsed time = 28.73s (DegenMoves)
Total elapsed time = 31.33s (DegenMoves)

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

     0     0   53.00000    0  523    4.00000   53.00000  1225%     -   32s
H    0     0                       6.0000000   53.00000   783%     -   32s
H    0     0                       9.0000000   53.00000   489%     -   32s
     0     0   53.00000    0  826    9.00000   53.00000   489%     -   49s

Cutting planes:
  Gomory: 5
  Cover: 1
  Clique: 27
  MIR: 60
  Zero half: 3
  RLT: 33
  BQP: 2

Explored 1 nodes (95783 simplex iterations) in 50.04 seconds (50.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 6 4 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.300000000000e+01, gap 488.8889%

Wrote result file './lp_solutions/grafo6698.37.sol'

