
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 07:06:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5167.40.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/grafo5167.40.lp
Reading time = 0.16 seconds
: 87583 rows, 2290 columns, 264758 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 87583 rows, 2290 columns and 264758 nonzeros
Model fingerprint: 0x6b478add
Variable types: 48 continuous, 2242 integer (2242 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 19902 rows and 19 columns
Presolve time: 0.84s
Presolved: 67681 rows, 2271 columns, 205442 nonzeros
Variable types: 0 continuous, 2271 integer (2223 binary)
Root relaxation presolved: 2271 rows, 69952 columns, 207713 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17057    5.6967170e+01   0.000000e+00   8.786416e+04      5s
   34975    5.6945174e+01   0.000000e+00   2.721190e+04     10s
   52879    5.6935544e+01   0.000000e+00   7.882687e+03     15s
   69749    5.6932376e+01   0.000000e+00   5.718255e+03     20s
   80989    5.7000000e+01   0.000000e+00   0.000000e+00     23s
   80989    5.7000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.700000e+01, 80989 iterations, 22.35 seconds (14.32 work units)
Total elapsed time = 42.06s (DegenMoves)

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

     0     0   57.00000    0  728          -   57.00000      -     -   50s
H    0     0                       8.0000000   57.00000   612%     -   50s

Explored 1 nodes (102100 simplex iterations) in 50.04 seconds (39.99 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.700000000000e+01, gap 612.5000%

Wrote result file './lp_solutions/grafo5167.40.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:13:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5167.40.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/grafo5167.40.lp
Reading time = 0.14 seconds
: 87583 rows, 2290 columns, 264758 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 87583 rows, 2290 columns and 264758 nonzeros
Model fingerprint: 0x6b478add
Variable types: 48 continuous, 2242 integer (2242 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 19902 rows and 19 columns
Presolve time: 0.55s
Presolved: 67681 rows, 2271 columns, 205442 nonzeros
Variable types: 0 continuous, 2271 integer (2223 binary)
Root relaxation presolved: 2271 rows, 69952 columns, 207713 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24387    5.6955474e+01   0.000000e+00   3.117973e+04      5s
   47882    5.6937470e+01   0.000000e+00   1.127633e+04     10s
   70411    5.6932307e+01   0.000000e+00   2.071396e+03     15s
   80989    5.7000000e+01   0.000000e+00   0.000000e+00     17s
   80989    5.7000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 5.700000e+01, 80989 iterations, 16.69 seconds (14.32 work units)
Total elapsed time = 32.51s (DegenMoves)
Total elapsed time = 42.34s (DegenMoves)

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

     0     0   57.00000    0  545          -   57.00000      -     -   45s
H    0     0                      13.0000000   57.00000   338%     -   47s
H    0     0                      14.0000000   57.00000   307%     -   47s
     0     0          -    0        14.00000   57.00000   307%     -   50s

Cutting planes:
  Gomory: 24
  Cover: 45
  Clique: 9
  MIR: 168
  StrongCG: 2
  GUB cover: 3
  Zero half: 58
  RLT: 67
  BQP: 3

Explored 1 nodes (113333 simplex iterations) in 50.10 seconds (54.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 13 

Time limit reached
Best objective 1.400000000000e+01, best bound 5.700000000000e+01, gap 307.1429%

Wrote result file './lp_solutions/grafo5167.40.sol'

