
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:00:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6190.41.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/grafo6190.41.lp
Reading time = 0.11 seconds
: 70240 rows, 2137 columns, 212451 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 70240 rows, 2137 columns and 212451 nonzeros
Model fingerprint: 0x6e3750b1
Variable types: 45 continuous, 2092 integer (2092 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 12886 rows and 16 columns
Presolve time: 0.43s
Presolved: 57354 rows, 2121 columns, 174137 nonzeros
Variable types: 0 continuous, 2121 integer (2076 binary)
Root relaxation presolved: 2118 rows, 59472 columns, 176258 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27849    4.8941723e+01   0.000000e+00   9.594640e+02      5s
   38804    4.9000000e+01   0.000000e+00   0.000000e+00      7s
   38804    4.9000000e+01   0.000000e+00   0.000000e+00      7s
   38804    4.9000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.900000e+01, 38804 iterations, 6.53 seconds (5.28 work units)
Total elapsed time = 16.17s (DegenMoves)

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

     0     0   49.00000    0  724          -   49.00000      -     -   20s
H    0     0                       6.0000000   49.00000   717%     -   22s
     0     0   49.00000    0  771    6.00000   49.00000   717%     -   30s
H    0     0                      12.0000000   49.00000   308%     -   30s
     0     0   49.00000    0  759   12.00000   49.00000   308%     -   31s
     0     0   49.00000    0  537   12.00000   49.00000   308%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 28
  Cover: 14
  Clique: 1
  MIR: 144
  StrongCG: 1
  Zero half: 31
  RLT: 45

Explored 1 nodes (75975 simplex iterations) in 50.08 seconds (45.04 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 6 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.900000000000e+01, gap 308.3333%

Wrote result file './lp_solutions/grafo6190.41.sol'

