
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:37:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7692.42.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/grafo7692.42.lp
Reading time = 0.18 seconds
: 108262 rows, 2326 columns, 326723 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 108262 rows, 2326 columns and 326723 nonzeros
Model fingerprint: 0x9aadc4e4
Variable types: 48 continuous, 2278 integer (2278 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 28718 rows and 33 columns
Presolve time: 0.79s
Presolved: 79544 rows, 2293 columns, 240951 nonzeros
Variable types: 0 continuous, 2293 integer (2245 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2290 rows, 81834 columns, 243244 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23910    4.4948518e+01   0.000000e+00   1.212698e+04      5s
   46878    4.4940180e+01   0.000000e+00   3.608660e+02     10s
   54820    4.5000000e+01   0.000000e+00   0.000000e+00     12s
   54820    4.5000000e+01   0.000000e+00   0.000000e+00     12s
   54820    4.5000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.500000e+01, 54820 iterations, 11.15 seconds (9.76 work units)
Total elapsed time = 24.47s (DegenMoves)
Total elapsed time = 25.04s (DegenMoves)

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

     0     0   45.00000    0  400    9.00000   45.00000   400%     -   25s
H    0     0                      10.0000000   45.00000   350%     -   26s
     0     0   45.00000    0  661   10.00000   45.00000   350%     -   34s
     0     0   45.00000    0  631   10.00000   45.00000   350%     -   35s
     0     0   45.00000    0  709   10.00000   45.00000   350%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 51
  Cover: 15
  Clique: 9
  MIR: 113
  GUB cover: 1
  Zero half: 20
  RLT: 42
  BQP: 2

Explored 1 nodes (82006 simplex iterations) in 50.04 seconds (49.09 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 9 1 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.500000000000e+01, gap 350.0000%

Wrote result file './lp_solutions/grafo7692.42.sol'

