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trevor_hansen [Thu, 12 May 2011 04:28:04 +0000 (04:28 +0000)]

Extra simplification rule.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1334 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 05:17:11 +0000 (05:17 +0000)]

Extra test cases that simplify down to nothing.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1332 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 05:14:36 +0000 (05:14 +0000)]

ITE context is mostly bad. Now disabled by default.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1331 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 04:24:39 +0000 (04:24 +0000)]

No longer default to the simple CNF generator for big AIGs, i.e >=2Million nodes. We used to do this because of a bug(?) now fixed in ABC.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1329 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 04:23:04 +0000 (04:23 +0000)]

Improvement. Exit-after-cnf would exit after sending the CNF to the SAT solver. We used to read the CNF back out of the SAT solver, but don't any longer, so there's no reason to do this.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1328 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 04:15:15 +0000 (04:15 +0000)]

Fix. Creating the node (v + v), where v is greater than 64 bits would fail.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1326 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 03:34:42 +0000 (03:34 +0000)]

Bugfix. Arithmetic shifts by constants that didn't fit in 32-bits would cause an assertion error.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1323 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 01:57:12 +0000 (01:57 +0000)]

Revert the change to run_tests, I didn't mean to submit this.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1321 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 01:53:42 +0000 (01:53 +0000)]

Remove the comment that 32-bit is best for arrays. No longer the case because we use ABC's AIG CNF conversion by default.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1320 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 01:49:00 +0000 (01:49 +0000)]

Improvement. Add array size statistics when printing out stats.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1319 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 11 May 2011 01:28:38 +0000 (01:28 +0000)]

Bugfix. Maybe. Disable a comparison so that CNF conversion doesn't fail. This fixes the assertion error.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1318 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 9 May 2011 03:57:25 +0000 (03:57 +0000)]

Adds two extra simplfication rules.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1316 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 9 May 2011 00:31:06 +0000 (00:31 +0000)]

More simplification rules.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1315 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 7 May 2011 12:14:51 +0000 (12:14 +0000)]

Extra simplification rules for the simplifying node factory.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1314 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 7 May 2011 12:02:20 +0000 (12:02 +0000)]

Signed division now returns what is should. Signed division is defined by unsigned division. Unsigned division returns 1, if the flag is set, now signed division returns 1 or -1 as appropriate.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1313 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 7 May 2011 12:00:42 +0000 (12:00 +0000)]

Add a public function that calls sizeReducing until fixed point (under some conditions.)

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1312 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 5 May 2011 03:45:03 +0000 (03:45 +0000)]

Adds an extra BVPLUS simplification rule. Cleans up the BVPLUS rules.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1311 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 5 May 2011 01:46:13 +0000 (01:46 +0000)]

Important bugfix. r1291 through to this revision, about once per 200M random instances, return the wrong result.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1310 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 5 May 2011 00:13:34 +0000 (00:13 +0000)]

Add an extra simplification rule.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1309 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 4 May 2011 05:04:31 +0000 (05:04 +0000)]

Replace variables before calling the interval analysis.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1308 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 4 May 2011 03:53:48 +0000 (03:53 +0000)]

Function to reset the stopwatch.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1307 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 4 May 2011 02:45:04 +0000 (02:45 +0000)]

Another fix to the same

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1306 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 4 May 2011 02:41:00 +0000 (02:41 +0000)]

Correct the last patch. I don't think this code runs.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1305 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 4 May 2011 01:41:39 +0000 (01:41 +0000)]

Apply simplifications through arrayterms too.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1304 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 2 May 2011 14:14:58 +0000 (14:14 +0000)]

Bugfix. Rarely we get the wrong answer; I got two broken instances in 140 days of fuzzing. This fixes those two instances, but, almost any change to STP fixes it, i.e. causes the problem to go away.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1299 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 1 May 2011 14:20:34 +0000 (14:20 +0000)]

Compiling with -D_GLIBCXX_DEBUG reported warnings because we sometimes derefferenced an iterator that was at the end. I'm not sure if this is really a problem or not..

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1298 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 1 May 2011 12:48:53 +0000 (12:48 +0000)]

Code to apply the alwaysTrueSet. Not currently enabled.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1297 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 1 May 2011 03:38:53 +0000 (03:38 +0000)]

Enable bitblast simplifications by default

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1296 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 30 Apr 2011 15:29:59 +0000 (15:29 +0000)]

Turn off the ite-context simplification by default.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1295 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 30 Apr 2011 12:28:07 +0000 (12:28 +0000)]

Important Bugfix. The prior checkin sometimes, but rarely, returned the wrong result.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1294 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 30 Apr 2011 05:09:02 +0000 (05:09 +0000)]

Bugfix. The last checkin caused an infinite loop (often).

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1293 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 30 Apr 2011 05:00:44 +0000 (05:00 +0000)]

Extra simplification rules

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1292 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 30 Apr 2011 04:18:02 +0000 (04:18 +0000)]

Extra simplification rules.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1291 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 30 Apr 2011 02:07:39 +0000 (02:07 +0000)]

Convert subtraction to addition in the simplifying node factory.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1290 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Fri, 29 Apr 2011 05:57:36 +0000 (05:57 +0000)]

Bugfix. Reads might have been simplified down which was causing an assertion error.

Thanks for Yunho Kim for reporting this!

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1288 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 27 Apr 2011 07:10:09 +0000 (07:10 +0000)]

Important Bugfix. The prior checkin causes the WRONG answer sometimes.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1287 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 27 Apr 2011 06:52:58 +0000 (06:52 +0000)]

Extra simplification rules. In particular a simple signed interval analysis.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1286 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 27 Apr 2011 02:36:30 +0000 (02:36 +0000)]

Add extra simplifying rules.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1285 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 27 Apr 2011 01:33:46 +0000 (01:33 +0000)]

Fix. I thought that extracts don't add any information but they do, if the underlying term has only partial fixed information.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1284 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 27 Apr 2011 00:37:21 +0000 (00:37 +0000)]

Remove signed division, modulus and remainder when creating nodes via the simplifying node factory.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1283 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Tue, 26 Apr 2011 23:56:29 +0000 (23:56 +0000)]

Two extra simplification rules.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1282 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 21 Apr 2011 02:06:24 +0000 (02:06 +0000)]

Change the sorting network based adder (which isn't used by default).

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1281 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 20 Apr 2011 14:23:50 +0000 (14:23 +0000)]

Refactor. Less verbose.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1280 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 20 Apr 2011 13:35:50 +0000 (13:35 +0000)]

Improvement. Add a warning when parsing problems that use array extensionality.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1279 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 16 Apr 2011 13:32:28 +0000 (13:32 +0000)]

Extra upfront simplification rules.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1278 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 14 Apr 2011 06:34:08 +0000 (06:34 +0000)]

Add some missing simplification rules for AND/OR/ propositional ITE.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1277 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 14 Apr 2011 05:32:21 +0000 (05:32 +0000)]

Shortcut in a rare circumstance.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1276 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 14 Apr 2011 05:31:06 +0000 (05:31 +0000)]

Extra BVXOR simplification rules.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1275 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 13 Apr 2011 14:21:58 +0000 (14:21 +0000)]

Adds the reverse of rules to catch an obscure but important for some of our benchmarks rule.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1274 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 13 Apr 2011 12:58:34 +0000 (12:58 +0000)]

Improvement. Add a warning message when using --exit-after-CNF with arrays, without -r.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1273 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 13 Apr 2011 12:41:03 +0000 (12:41 +0000)]

Improvement. Fix the difficulty score for subtraction.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1272 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 13 Apr 2011 04:52:49 +0000 (04:52 +0000)]

Fix the build. Without -NDEBUG wouldn't compile.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1271 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 13 Apr 2011 04:41:09 +0000 (04:41 +0000)]

Improvement. Look for nodes that are true/false when conjoined to the top.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1270 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 13 Apr 2011 04:30:17 +0000 (04:30 +0000)]

Remove some assertions that don't necessarily hold.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1269 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 13 Apr 2011 02:00:29 +0000 (02:00 +0000)]

Improvement. Replace the hashing node factory with the simplifying node factory. Add an extra obscure simplification rule.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1268 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 13 Apr 2011 01:43:16 +0000 (01:43 +0000)]

Extra simplification rule.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1267 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 11 Apr 2011 15:11:08 +0000 (15:11 +0000)]

oops. Meant to add this too.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1266 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 11 Apr 2011 15:09:31 +0000 (15:09 +0000)]

Add an extra simplification rule to the simplifying node factory.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1265 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 11 Apr 2011 13:26:53 +0000 (13:26 +0000)]

Move some division be zero code into the bitblaster. I'm trying to make the array transformer (which also transforms signed div/mod) idempotent.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1264 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 10 Apr 2011 11:37:02 +0000 (11:37 +0000)]

Adds code, that's not currently enabled, to read-out all the nodes that the bitblaster discovers should be constant.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1263 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 10 Apr 2011 04:13:22 +0000 (04:13 +0000)]

Improvement. Use the simplifying node factory in transformer.

This is a hopefully correct implementation of r1260.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1262 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 10 Apr 2011 03:53:14 +0000 (03:53 +0000)]

Revert the previous revision. It broke lots.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1261 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Fri, 8 Apr 2011 14:57:20 +0000 (14:57 +0000)]

Improvement. Use the simplifying node factory in transformer.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1260 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Fri, 8 Apr 2011 04:33:28 +0000 (04:33 +0000)]

Improvement. Don't add NOT FALSE at the end of the input..

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1259 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 7 Apr 2011 14:36:10 +0000 (14:36 +0000)]

Improvement. When a node is simplified set a value so that we can avoid simplifying it later.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1258 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 7 Apr 2011 13:43:19 +0000 (13:43 +0000)]

Improvement. Output the time spent in a stage with -s.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1257 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 7 Apr 2011 13:38:52 +0000 (13:38 +0000)]

Hack. The ITE context simplification blows out ff.stp, i.e. it takes > 5 minutes. This limits ITE context simplifications to small contexts.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1256 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 7 Apr 2011 13:36:23 +0000 (13:36 +0000)]

Revert. I didn't mean to checkin all those changes.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1255 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 7 Apr 2011 13:22:05 +0000 (13:22 +0000)]

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trevor_hansen [Wed, 6 Apr 2011 03:42:57 +0000 (03:42 +0000)]

Remove junk.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1253 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 6 Apr 2011 03:42:07 +0000 (03:42 +0000)]

Improve the bvsolver.If the substitution of a monomial fails, then the bvsolver will loop looking for more candidates.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1252 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 6 Apr 2011 02:59:50 +0000 (02:59 +0000)]

Refactor. Remove junk.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1251 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 3 Apr 2011 14:14:56 +0000 (14:14 +0000)]

Improvement. Some extra simplifications for the simplifyingNF.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1250 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 3 Apr 2011 09:49:09 +0000 (09:49 +0000)]

Improvement. The simplifying node factory never creates x + y = y + 2 (say). Instead it removes terms that are common on both sides. Creating x = 2.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1249 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 31 Mar 2011 13:02:27 +0000 (13:02 +0000)]

Tiny improvement. Add the one-bit operations that evaluate to a child or a constant.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1248 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 31 Mar 2011 12:39:46 +0000 (12:39 +0000)]

Small improvement. Discard the inner write if the two WRITEs are to the same index.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1247 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Tue, 29 Mar 2011 13:18:23 +0000 (13:18 +0000)]

Work around rare problem caused by the simplifying node factory.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1246 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 28 Mar 2011 03:49:09 +0000 (03:49 +0000)]

Make applySubstitutionMap idempotent (I hope).

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1245 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 28 Mar 2011 03:47:25 +0000 (03:47 +0000)]

Improvement. The simplifying node factory now eliminates extract over extracts, as well as some extract over concats.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1244 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 28 Mar 2011 00:36:48 +0000 (00:36 +0000)]

During the size reducing transformations, now set the top node to true during constant bit propagation.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1243 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 28 Mar 2011 00:35:17 +0000 (00:35 +0000)]

Change the names for some statistics.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1242 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 28 Mar 2011 00:34:44 +0000 (00:34 +0000)]

Extra simplification rule for BVXOR.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1241 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sun, 27 Mar 2011 00:43:13 +0000 (00:43 +0000)]

Add experimental code (not presently enabled), that replaces known values with concatenations.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1240 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Sat, 26 Mar 2011 03:58:20 +0000 (03:58 +0000)]

Improvement. The simplifying node factory no longer creates greater than equal nodes.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1239 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Fri, 25 Mar 2011 13:34:55 +0000 (13:34 +0000)]

Improvement. Convert left/right (NOT aritmetic), shifts by a known amount to a concatenation and extract in the simplifying node factory.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1238 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Fri, 25 Mar 2011 11:55:20 +0000 (11:55 +0000)]

Improvement. Better unsigned interval propagation of BVRIGHTSHIFT.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1237 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Fri, 25 Mar 2011 03:19:37 +0000 (03:19 +0000)]

Fix remove an extra pair of brackets from LETs. Thanks to Ayrat Khalimov.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1236 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 24 Mar 2011 05:52:02 +0000 (05:52 +0000)]

Slight speedup to the hashing node factory.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1235 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 24 Mar 2011 03:15:35 +0000 (03:15 +0000)]

Improvement. Create fewer objects.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1234 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Thu, 24 Mar 2011 01:28:52 +0000 (01:28 +0000)]

Improvement. No longer have vectors in the ASTSymbol and ASTBVConst nodes (which are always leaves). This saves 24 bytes per node.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1233 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 13:34:31 +0000 (13:34 +0000)]

Speedup. Short cut before some copies were created.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1232 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 12:04:46 +0000 (12:04 +0000)]

Move CVC parser to using strings for LET names. Removes the worst problems with names that haven't been defined being usable.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1231 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 05:58:12 +0000 (05:58 +0000)]

Improvement. SMTLIB2 lets now use strings for names, not SYMBOLS.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1230 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 05:45:36 +0000 (05:45 +0000)]

Fix the SMTLIB1 to not accept badly formed input. Previously if a variable wasn't defined it'd be implicitly defined as a boolean.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1229 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 03:17:02 +0000 (03:17 +0000)]

If there are unapplied substitutions before starting unconstrained variable elimination. Then apply then.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1228 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 03:13:08 +0000 (03:13 +0000)]

Refactor. Changes to whitespace only.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1227 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 02:21:13 +0000 (02:21 +0000)]

Refactor. A new function to check if there are unapplied variable substitutions.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1226 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 00:28:45 +0000 (00:28 +0000)]

Now assume there will be no unapplied substitutions when unconstrained variable elimination starts.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1225 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Wed, 23 Mar 2011 00:19:46 +0000 (00:19 +0000)]

Refactor. Convert from if-then-else to a switch.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1224 e59a4935-1847-0410-ae03-e826735625c1

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trevor_hansen [Mon, 21 Mar 2011 06:47:55 +0000 (06:47 +0000)]

Adds extra cases to the simplifying node factory.

git-svn-id: https://stp-fast-prover.svn.sourceforge.net/svnroot/stp-fast-prover/trunk/stp@1223 e59a4935-1847-0410-ae03-e826735625c1