
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:02:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3420.41.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/grafo3420.41.lp
Reading time = 0.18 seconds
: 109826 rows, 2173 columns, 331197 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 109826 rows, 2173 columns and 331197 nonzeros
Model fingerprint: 0xf45d572d
Variable types: 45 continuous, 2128 integer (2128 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 -0.0000000
Presolve removed 33722 rows and 27 columns
Presolve time: 0.78s
Presolved: 76104 rows, 2146 columns, 230394 nonzeros
Variable types: 0 continuous, 2146 integer (2101 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2143 rows, 78247 columns, 232540 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25729    4.4765961e+01   0.000000e+00   1.414168e+04      5s
   43534    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   43534    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   43534    4.5000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.500000e+01, 43534 iterations, 7.50 seconds (6.16 work units)
Total elapsed time = 16.00s (DegenMoves)

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

     0     0   45.00000    0  516   10.00000   45.00000   350%     -   17s
H    0     0                      11.0000000   45.00000   309%     -   17s
     0     0   45.00000    0  739   11.00000   45.00000   309%     -   33s
     0     0   45.00000    0  736   11.00000   45.00000   309%     -   34s
     0     0   45.00000    0  831   11.00000   45.00000   309%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 33
  Cover: 9
  Clique: 31
  MIR: 141
  GUB cover: 1
  Zero half: 16
  RLT: 62
  BQP: 3

Explored 1 nodes (69486 simplex iterations) in 50.08 seconds (44.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 10 -0 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.500000000000e+01, gap 309.0909%

Wrote result file './lp_solutions/grafo3420.41.sol'

