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meelgroup / arjun

CNF minimizer and minimal independent set calculator
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CNF with 0 clauses output #2

Closed allrtaken closed 2 years ago

allrtaken commented 2 years ago

Hello,

I ran arjun with default parameters on the file mc2022_track1_001.cnf and got the file output.cnf with 0 clauses as output. I am not sure what the issue is or if I am running the tool incorrectly. The command I used was ./arjun --input mc2022_track1_001.cnf output.cnf

I have also attached the output of the tool.

Thanks, Aditya issue_files.zip

msoos commented 2 years ago

Hi,

Well, if Arjun is correct, there are 2*100 solutions: it spits out an empty CNF with 100 variables and an independent support of 100. So 2100 solutions. My understand is that that's correct. Hence, Arjun is doing what it was designed to do: simplify the CNF while preserving the solution count.

Unless I am wrong about the number of solutions of that CNF, Arjun is working correctly. Arjun can be this powerful, actually :) [or it's buggy :D hopefully not!]

I hope this helps,

Mate

ryap commented 2 years ago

On Thu, Oct 13, 2022 at 06:25:55AM -0700, Mate Soos wrote:

Hi,

Well, if Arjun is correct, there are 2*100 solutions: it spits out an empty CNF with 100 variables and an independent support of 100. So 2100 solutions. My understand is that that's correct. Hence, Arjun is doing what it was designed to do: simplify the CNF while preserving the solution count.

Unless I am wrong about the number of solutions of that CNF, Arjun is working correctly. Arjun can be this powerful, actually :) [or it's buggy :D hopefully not!]

Can run another counter to check.

R

msoos commented 2 years ago

I did, it didn't finish.

Mate

On Thu, Oct 13, 2022, 09:33 Roland Yap @.***> wrote:

On Thu, Oct 13, 2022 at 06:25:55AM -0700, Mate Soos wrote:

Hi,

Well, if Arjun is correct, there are 2*100 solutions: it spits out an empty CNF with 100 variables and an independent support of 100. So 2100 solutions. My understand is that that's correct. Hence, Arjun is doing what it was designed to do: simplify the CNF while preserving the solution count.

Unless I am wrong about the number of solutions of that CNF, Arjun is working correctly. Arjun can be this powerful, actually :) [or it's buggy :D hopefully not!]

Can run another counter to check.

R

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allrtaken commented 2 years ago

Thank you. I checked the count and it is indeed 2^100.

Adtitya