
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 05:02:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2581.45.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/grafo2581.45.lp
Reading time = 0.15 seconds
: 71928 rows, 2285 columns, 217464 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 71928 rows, 2285 columns and 217464 nonzeros
Model fingerprint: 0x547c0874
Variable types: 46 continuous, 2239 integer (2239 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 8082 rows and 0 columns
Presolve time: 0.81s
Presolved: 63846 rows, 2285 columns, 193591 nonzeros
Variable types: 0 continuous, 2285 integer (2239 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2234 rows, 66080 columns, 195876 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18942    3.7975573e+01   0.000000e+00   2.846822e+04      5s
   39145    3.7961698e+01   0.000000e+00   4.045267e+03     10s
   56965    3.7959171e+01   0.000000e+00   2.771799e+02     15s
   60588    3.8000000e+01   0.000000e+00   0.000000e+00     16s
   60588    3.8000000e+01   0.000000e+00   0.000000e+00     16s
   60588    3.8000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 3.800000e+01, 60588 iterations, 15.26 seconds (9.58 work units)
Total elapsed time = 30.07s (DegenMoves)

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

     0     0   38.00000    0  707    7.00000   38.00000   443%     -   36s
H    0     0                       9.0000000   38.00000   322%     -   36s
H    0     0                      11.0000000   38.00000   245%     -   40s
     0     0          -    0        11.00000   38.00000   245%     -   50s

Cutting planes:
  Gomory: 24
  Cover: 33
  MIR: 86
  StrongCG: 2
  Zero half: 29
  RLT: 44

Explored 1 nodes (82871 simplex iterations) in 50.08 seconds (34.69 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 11 9 7 -0 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.800000000000e+01, gap 245.4545%

Wrote result file './lp_solutions/grafo2581.45.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:31:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2581.45.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/grafo2581.45.lp
Reading time = 0.11 seconds
: 71928 rows, 2285 columns, 217464 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 71928 rows, 2285 columns and 217464 nonzeros
Model fingerprint: 0x547c0874
Variable types: 46 continuous, 2239 integer (2239 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 8082 rows and 0 columns
Presolve time: 0.40s
Presolved: 63846 rows, 2285 columns, 193591 nonzeros
Variable types: 0 continuous, 2285 integer (2239 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2234 rows, 66080 columns, 195876 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27859    3.7967038e+01   0.000000e+00   1.252817e+05      5s
   53104    3.7959360e+01   0.000000e+00   1.144033e+03     10s
   60588    3.8000000e+01   0.000000e+00   0.000000e+00     12s
   60588    3.8000000e+01   0.000000e+00   0.000000e+00     12s
   60588    3.8000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 3.800000e+01, 60588 iterations, 11.18 seconds (9.58 work units)
Total elapsed time = 22.77s (DegenMoves)
Total elapsed time = 25.86s (DegenMoves)

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

     0     0   38.00000    0  707    7.00000   38.00000   443%     -   27s
H    0     0                       9.0000000   38.00000   322%     -   27s
H    0     0                      11.0000000   38.00000   245%     -   29s
     0     0   38.00000    0  904   11.00000   38.00000   245%     -   39s
     0     0   38.00000    0  840   11.00000   38.00000   245%     -   42s
     0     0          -    0        11.00000   38.00000   245%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 29
  Cover: 5
  MIR: 110
  Zero half: 55
  RLT: 47

Explored 1 nodes (88423 simplex iterations) in 50.05 seconds (44.79 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 11 9 7 -0 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.800000000000e+01, gap 245.4545%

Wrote result file './lp_solutions/grafo2581.45.sol'

