
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:53:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1092.42.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/grafo1092.42.lp
Reading time = 0.19 seconds
: 85765 rows, 2155 columns, 258996 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 85765 rows, 2155 columns and 258996 nonzeros
Model fingerprint: 0xf9576576
Variable types: 44 continuous, 2111 integer (2111 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]
Presolve removed 19991 rows and 31 columns
Presolve time: 0.69s
Presolved: 65774 rows, 2124 columns, 199383 nonzeros
Variable types: 0 continuous, 2124 integer (2080 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2124 rows, 67898 columns, 201507 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21688    3.8836690e+01   0.000000e+00   1.512996e+03      5s
   25854    3.9000000e+01   0.000000e+00   0.000000e+00      6s
   25854    3.9000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 3.900000e+01, 25854 iterations, 5.09 seconds (3.50 work units)
Total elapsed time = 10.91s (DegenMoves)

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

     0     0   39.00000    0  508    6.00000   39.00000   550%     -   13s
H    0     0                       8.0000000   39.00000   387%     -   13s
H    0     0                      10.0000000   39.00000   290%     -   15s
     0     0   39.00000    0  692   10.00000   39.00000   290%     -   27s
     0     0   39.00000    0  737   10.00000   39.00000   290%     -   28s
     0     0   39.00000    0  668   10.00000   39.00000   290%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 27
  Cover: 4
  Clique: 22
  MIR: 103
  Zero half: 20
  RLT: 70
  BQP: 2

Explored 1 nodes (51710 simplex iterations) in 50.10 seconds (34.62 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 8 6 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.900000000000e+01, gap 290.0000%

Wrote result file './lp_solutions/grafo1092.42.sol'

