
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:45:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7298.41.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/grafo7298.41.lp
Reading time = 0.21 seconds
: 134352 rows, 2334 columns, 405059 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 134352 rows, 2334 columns and 405059 nonzeros
Model fingerprint: 0xbde8bc9d
Variable types: 47 continuous, 2287 integer (2287 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 4.0000000
Presolve removed 45375 rows and 8 columns
Presolve time: 0.82s
Presolved: 88977 rows, 2326 columns, 269261 nonzeros
Variable types: 0 continuous, 2326 integer (2279 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2320 rows, 91297 columns, 271587 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24063    5.4834384e+01   0.000000e+00   1.053002e+04      5s
   50232    5.4794639e+01   0.000000e+00   4.345172e+02     10s
   54099    5.5000000e+01   0.000000e+00   0.000000e+00     11s
   54099    5.5000000e+01   0.000000e+00   0.000000e+00     11s
   54099    5.5000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.500000e+01, 54099 iterations, 9.96 seconds (7.84 work units)
Total elapsed time = 24.65s (DegenMoves)
Total elapsed time = 25.75s (DegenMoves)

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

     0     0   55.00000    0  509   10.00000   55.00000   450%     -   26s
H    0     0                      12.0000000   55.00000   358%     -   26s
     0     0   55.00000    0  858   12.00000   55.00000   358%     -   40s
     0     0   55.00000    0  831   12.00000   55.00000   358%     -   42s
     0     0          -    0        12.00000   55.00000   358%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 22
  Cover: 10
  Clique: 24
  MIR: 158
  Zero half: 35
  RLT: 72
  BQP: 2

Explored 1 nodes (78410 simplex iterations) in 50.02 seconds (49.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 4 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.500000000000e+01, gap 358.3333%

Wrote result file './lp_solutions/grafo7298.41.sol'

