
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 04:09:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1494.50.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/grafo1494.50.lp
Reading time = 0.16 seconds
: 80372 rows, 2484 columns, 242821 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 80372 rows, 2484 columns and 242821 nonzeros
Model fingerprint: 0x735d89ce
Variable types: 45 continuous, 2439 integer (2439 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 8579 rows and 30 columns
Presolve time: 0.83s
Presolved: 71793 rows, 2454 columns, 217421 nonzeros
Variable types: 0 continuous, 2454 integer (2409 binary)
Root relaxation presolved: 2454 rows, 74247 columns, 219875 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18317    3.8945699e+01   0.000000e+00   4.118692e+04      5s
   35657    3.8938886e+01   0.000000e+00   1.498714e+02     10s
   38381    3.9000000e+01   0.000000e+00   0.000000e+00     11s
   38381    3.9000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 3.900000e+01, 38381 iterations, 10.05 seconds (6.40 work units)
Total elapsed time = 21.51s (DegenMoves)

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

     0     0   39.00000    0  419          -   39.00000      -     -   22s
H    0     0                      11.0000000   39.00000   255%     -   22s
H    0     0                      12.0000000   39.00000   225%     -   23s
     0     0   39.00000    0  570   12.00000   39.00000   225%     -   30s
H    0     0                      14.0000000   39.00000   179%     -   31s
     0     0   39.00000    0  506   14.00000   39.00000   179%     -   34s
     0     0   39.00000    0  452   14.00000   39.00000   179%     -   50s

Cutting planes:
  Gomory: 12
  Lift-and-project: 36
  Cover: 21
  MIR: 183
  StrongCG: 1
  Zero half: 38
  RLT: 60

Explored 1 nodes (64126 simplex iterations) in 50.11 seconds (31.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 12 11 

Time limit reached
Best objective 1.400000000000e+01, best bound 3.900000000000e+01, gap 178.5714%

Wrote result file './lp_solutions/grafo1494.50.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:55:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1494.50.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/grafo1494.50.lp
Reading time = 0.13 seconds
: 80372 rows, 2484 columns, 242821 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 80372 rows, 2484 columns and 242821 nonzeros
Model fingerprint: 0x735d89ce
Variable types: 45 continuous, 2439 integer (2439 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 8579 rows and 30 columns
Presolve time: 0.53s
Presolved: 71793 rows, 2454 columns, 217421 nonzeros
Variable types: 0 continuous, 2454 integer (2409 binary)
Root relaxation presolved: 2454 rows, 74247 columns, 219875 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25797    3.8940469e+01   0.000000e+00   2.211240e+03      5s
   38381    3.9000000e+01   0.000000e+00   0.000000e+00      8s
   38381    3.9000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 3.900000e+01, 38381 iterations, 7.03 seconds (6.40 work units)
Total elapsed time = 16.03s (DegenMoves)

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

     0     0   39.00000    0  419          -   39.00000      -     -   16s
H    0     0                      11.0000000   39.00000   255%     -   16s
H    0     0                      12.0000000   39.00000   225%     -   17s
     0     0   39.00000    0  570   12.00000   39.00000   225%     -   21s
H    0     0                      14.0000000   39.00000   179%     -   22s
     0     0   39.00000    0  506   14.00000   39.00000   179%     -   24s
H    0     0                      16.0000000   39.00000   144%     -   35s
H    0     0                      17.0000000   39.00000   129%     -   35s
     0     0   38.00000    0  452   17.00000   38.00000   124%     -   35s
     0     0   38.00000    0  520   17.00000   38.00000   124%     -   37s
H    0     0                      18.0000000   38.00000   111%     -   48s
H    0     0                      19.0000000   38.00000   100%     -   48s
     0     0   38.00000    0  376   19.00000   38.00000   100%     -   48s
     0     0   38.00000    0  376   19.00000   38.00000   100%     -   48s
     0     0          -    0        19.00000   38.00000   100%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 28
  MIR: 168
  GUB cover: 4
  Zero half: 26
  RLT: 53

Explored 1 nodes (80907 simplex iterations) in 50.12 seconds (45.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 19 18 17 ... 11

Time limit reached
Best objective 1.900000000000e+01, best bound 3.800000000000e+01, gap 100.0000%

Wrote result file './lp_solutions/grafo1494.50.sol'

