
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:23:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6915.44.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/grafo6915.44.lp
Reading time = 0.19 seconds
: 117908 rows, 2707 columns, 356128 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 117908 rows, 2707 columns and 356128 nonzeros
Model fingerprint: 0x60475788
Variable types: 53 continuous, 2654 integer (2654 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 1.0000000
Presolve removed 25932 rows and 3 columns
Presolve time: 0.66s
Presolved: 91976 rows, 2704 columns, 278723 nonzeros
Variable types: 0 continuous, 2704 integer (2651 binary)
Found heuristic solution: objective 15.0000000
Root relaxation presolved: 2673 rows, 94649 columns, 281427 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20961    5.7735367e+01   0.000000e+00   1.412462e+04      5s
   42136    5.7699542e+01   0.000000e+00   1.115210e+02     10s
   44656    5.8000000e+01   0.000000e+00   0.000000e+00     11s
   44656    5.8000000e+01   0.000000e+00   0.000000e+00     11s
   44656    5.8000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.800000e+01, 44656 iterations, 9.97 seconds (7.98 work units)
Total elapsed time = 26.70s (DegenMoves)
Total elapsed time = 30.39s (DegenMoves)

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

     0     0   58.00000    0  745   15.00000   58.00000   287%     -   34s
     0     0          -    0        15.00000   58.00000   287%     -   50s

Cutting planes:
  Gomory: 42
  Cover: 41
  Clique: 8
  MIR: 142
  Zero half: 50
  RLT: 48

Explored 1 nodes (71459 simplex iterations) in 50.04 seconds (51.22 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 15 1 

Time limit reached
Best objective 1.500000000000e+01, best bound 5.800000000000e+01, gap 286.6667%

Wrote result file './lp_solutions/grafo6915.44.sol'

