
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov  1 21:56:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10276.41.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/grafo10276.41.lp
Reading time = 2.00 seconds
: 129478 rows, 2264 columns, 390313 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 129478 rows, 2264 columns and 390313 nonzeros
Model fingerprint: 0x47fdfb37
Variable types: 46 continuous, 2218 integer (2218 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 3.0000000
Presolve removed 43997 rows and 6 columns
Presolve time: 1.89s
Presolved: 85481 rows, 2258 columns, 258595 nonzeros
Variable types: 0 continuous, 2258 integer (2212 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2252 rows, 87733 columns, 260853 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7446    8.5157701e+01   0.000000e+00   1.214238e+05      5s
   17953    5.7860800e+01   0.000000e+00   4.995714e+04     10s
   28679    5.6807566e+01   0.000000e+00   3.936059e+04     15s
   38223    5.7000000e+01   0.000000e+00   0.000000e+00     19s
   38223    5.7000000e+01   0.000000e+00   0.000000e+00     19s
   38223    5.7000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.700000e+01, 38223 iterations, 16.98 seconds (5.59 work units)
Total elapsed time = 37.00s (DegenMoves)
Total elapsed time = 40.44s (DegenMoves)

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

     0     0   57.00000    0  444   12.00000   57.00000   375%     -   42s

Cutting planes:
  Cover: 58
  Clique: 16
  MIR: 261
  GUB cover: 3

Explored 1 nodes (49405 simplex iterations) in 50.36 seconds (19.30 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 3 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.700000000000e+01, gap 375.0000%

Wrote result file './lp_solutions/grafo10276.41.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:51:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10276.41.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/grafo10276.41.lp
Reading time = 0.21 seconds
: 129478 rows, 2264 columns, 390313 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 129478 rows, 2264 columns and 390313 nonzeros
Model fingerprint: 0x47fdfb37
Variable types: 46 continuous, 2218 integer (2218 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 3.0000000
Presolve removed 43997 rows and 6 columns
Presolve time: 0.79s
Presolved: 85481 rows, 2258 columns, 258595 nonzeros
Variable types: 0 continuous, 2258 integer (2212 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2252 rows, 87733 columns, 260853 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24389    5.6817208e+01   0.000000e+00   1.457087e+04      5s
   38223    5.7000000e+01   0.000000e+00   0.000000e+00      8s
   38223    5.7000000e+01   0.000000e+00   0.000000e+00      8s
   38223    5.7000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 5.700000e+01, 38223 iterations, 6.65 seconds (5.59 work units)
Total elapsed time = 15.61s (DegenMoves)

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

     0     0   57.00000    0  444   12.00000   57.00000   375%     -   17s
     0     0   57.00000    0  972   12.00000   57.00000   375%     -   32s
     0     0   57.00000    0  891   12.00000   57.00000   375%     -   33s
     0     0   57.00000    0  870   12.00000   57.00000   375%     -   50s

Cutting planes:
  Gomory: 7
  Cover: 20
  Clique: 30
  MIR: 162
  Zero half: 105
  RLT: 90
  BQP: 6
  PSD: 3

Explored 1 nodes (68610 simplex iterations) in 50.03 seconds (53.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 3 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.700000000000e+01, gap 375.0000%

Wrote result file './lp_solutions/grafo10276.41.sol'

