
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:03:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2593.40.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/grafo2593.40.lp
Reading time = 0.17 seconds
: 81939 rows, 2277 columns, 247799 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 81939 rows, 2277 columns and 247799 nonzeros
Model fingerprint: 0xd934dfad
Variable types: 49 continuous, 2228 integer (2228 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 -0.0000000
Presolve removed 15211 rows and 42 columns
Presolve time: 0.85s
Presolved: 66728 rows, 2235 columns, 202648 nonzeros
Variable types: 0 continuous, 2235 integer (2186 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2235 rows, 68963 columns, 204883 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16431    4.7967779e+01   0.000000e+00   2.772685e+04      5s
   32106    4.7945972e+01   0.000000e+00   3.960303e+04     10s
   49275    4.7936042e+01   0.000000e+00   1.116498e+04     15s
   66503    4.7931980e+01   0.000000e+00   1.140065e+04     20s
   80623    4.8000000e+01   0.000000e+00   0.000000e+00     24s
   80623    4.8000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 4.800000e+01, 80623 iterations, 23.35 seconds (14.54 work units)
Total elapsed time = 45.95s (DegenMoves)

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

     0     0   48.00000    0  923    7.00000   48.00000   586%     -   50s

Explored 1 nodes (97731 simplex iterations) in 50.03 seconds (37.62 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.800000000000e+01, gap 585.7143%

Wrote result file './lp_solutions/grafo2593.40.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:57:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2593.40.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/grafo2593.40.lp
Reading time = 0.13 seconds
: 81939 rows, 2277 columns, 247799 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 81939 rows, 2277 columns and 247799 nonzeros
Model fingerprint: 0xd934dfad
Variable types: 49 continuous, 2228 integer (2228 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 -0.0000000
Presolve removed 15211 rows and 42 columns
Presolve time: 0.54s
Presolved: 66728 rows, 2235 columns, 202648 nonzeros
Variable types: 0 continuous, 2235 integer (2186 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2235 rows, 68963 columns, 204883 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22820    4.7956842e+01   0.000000e+00   4.843516e+04      5s
   45974    4.7937460e+01   0.000000e+00   6.943857e+03     10s
   68814    4.7931753e+01   0.000000e+00   1.705607e+04     15s
   80623    4.8000000e+01   0.000000e+00   0.000000e+00     18s
   80623    4.8000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 4.800000e+01, 80623 iterations, 17.02 seconds (14.54 work units)
Total elapsed time = 35.41s (DegenMoves)
Total elapsed time = 40.47s (DegenMoves)

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

     0     0   48.00000    0  804    7.00000   48.00000   586%     -   42s
H    0     0                      10.0000000   48.00000   380%     -   47s
     0     0          -    0        10.00000   48.00000   380%     -   50s

Cutting planes:
  Gomory: 27
  Cover: 17
  Clique: 5
  MIR: 166
  StrongCG: 1
  GUB cover: 3
  Zero half: 22
  RLT: 49

Explored 1 nodes (103923 simplex iterations) in 50.06 seconds (49.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 7 -0 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.800000000000e+01, gap 380.0000%

Wrote result file './lp_solutions/grafo2593.40.sol'

