- Added a loop to internally assert constraints that are marked as true.

- Changes how CongruenceManager reports conflicts.
- ConstraintDatabase can now detect and raise conflicts when doing unate propagation.

1 files changed, 701 insertions, 0 deletions

diff --git a/test/regress/regress0/uflia/error1.smt b/test/regress/regress0/uflia/error1.smt
new file mode 100644
index 000000000..7afffaa88
--- /dev/null
+++ b/test/regress/regress0/uflia/error1.smt
@@ -0,0 +1,701 @@
+(benchmark fuzzsmt
+:logic QF_UFLIA
+:status sat
+:extrafuns ((f0 Int Int Int Int))
+:extrafuns ((f1 Int Int))
+:extrapreds ((p0 Int Int))
+:extrafuns ((v0 Int))
+:extrafuns ((v1 Int))
+:extrafuns ((v2 Int))
+:formula
+(let (?e3 1)
+(let (?e4 2)
+(let (?e5 (f1 v1))
+(let (?e6 (+ v2 v2))
+(let (?e7 (ite (p0 ?e6 v1) 1 0))
+(let (?e8 (ite (p0 ?e5 v1) 1 0))
+(let (?e9 (+ ?e6 ?e8))
+(let (?e10 (ite (p0 v1 ?e6) 1 0))
+(let (?e11 (ite (p0 v2 ?e8) 1 0))
+(let (?e12 (* (~ ?e4) ?e6))
+(let (?e13 (+ v1 ?e5))
+(let (?e14 (* ?e4 ?e12))
+(let (?e15 (f0 v2 ?e5 v0))
+(let (?e16 (ite (p0 ?e5 ?e6) 1 0))
+(let (?e17 (+ ?e7 ?e16))
+(let (?e18 (+ ?e10 ?e12))
+(let (?e19 (- ?e13 ?e12))
+(let (?e20 (* ?e19 (~ ?e4)))
+(let (?e21 (+ ?e13 ?e18))
+(let (?e22 (f0 ?e5 ?e17 ?e5))
+(let (?e23 (* ?e17 ?e4))
+(let (?e24 (ite (p0 ?e9 ?e19) 1 0))
+(let (?e25 (~ ?e6))
+(let (?e26 (f1 ?e6))
+(let (?e27 (* ?e25 (~ ?e3)))
+(flet ($e28 (< ?e7 ?e6))
+(flet ($e29 (> ?e12 ?e10))
+(flet ($e30 (distinct ?e7 ?e9))
+(flet ($e31 (<= v2 v2))
+(flet ($e32 (>= ?e6 ?e27))
+(flet ($e33 (distinct ?e11 ?e20))
+(flet ($e34 (> ?e25 ?e23))
+(flet ($e35 (< ?e7 ?e22))
+(flet ($e36 (>= ?e24 ?e10))
+(flet ($e37 (>= ?e24 ?e23))
+(flet ($e38 (distinct ?e5 ?e25))
+(flet ($e39 (= ?e16 ?e27))
+(flet ($e40 (> ?e21 ?e16))
+(flet ($e41 (> ?e7 ?e12))
+(flet ($e42 (distinct ?e22 ?e22))
+(flet ($e43 (= v2 ?e16))
+(flet ($e44 (>= ?e23 ?e7))
+(flet ($e45 (= ?e12 ?e8))
+(flet ($e46 (<= ?e13 ?e12))
+(flet ($e47 (< ?e12 ?e24))
+(flet ($e48 (< ?e13 ?e6))
+(flet ($e49 (> ?e15 ?e19))
+(flet ($e50 (> ?e25 ?e18))
+(flet ($e51 (>= ?e15 ?e7))
+(flet ($e52 (distinct ?e8 ?e20))
+(flet ($e53 (= ?e18 ?e5))
+(flet ($e54 (> ?e13 ?e15))
+(flet ($e55 (= ?e14 ?e16))
+(flet ($e56 (>= v0 ?e21))
+(flet ($e57 (= v1 ?e10))
+(flet ($e58 (distinct ?e26 ?e22))
+(flet ($e59 (> ?e18 ?e5))
+(flet ($e60 (< ?e11 ?e10))
+(flet ($e61 (>= ?e8 ?e11))
+(flet ($e62 (distinct ?e23 ?e21))
+(flet ($e63 (p0 v1 ?e20))
+(flet ($e64 (< ?e8 ?e11))
+(flet ($e65 (<= ?e26 ?e12))
+(flet ($e66 (= ?e21 ?e6))
+(flet ($e67 (distinct ?e21 ?e21))
+(flet ($e68 (>= v1 ?e17))
+(let (?e69 (ite $e59 ?e16 ?e12))
+(let (?e70 (ite $e47 ?e9 ?e19))
+(let (?e71 (ite $e64 ?e9 ?e25))
+(let (?e72 (ite $e63 v2 ?e25))
+(let (?e73 (ite $e31 ?e22 ?e15))
+(let (?e74 (ite $e66 ?e23 ?e20))
+(let (?e75 (ite $e57 ?e15 ?e9))
+(let (?e76 (ite $e39 ?e21 ?e75))
+(let (?e77 (ite $e62 v0 ?e11))
+(let (?e78 (ite $e50 ?e17 ?e71))
+(let (?e79 (ite $e38 ?e6 v0))
+(let (?e80 (ite $e62 ?e18 v0))
+(let (?e81 (ite $e29 ?e70 ?e13))
+(let (?e82 (ite $e54 ?e19 ?e20))
+(let (?e83 (ite $e57 ?e19 ?e77))
+(let (?e84 (ite $e41 ?e79 v2))
+(let (?e85 (ite $e56 ?e84 v2))
+(let (?e86 (ite $e47 ?e7 ?e15))
+(let (?e87 (ite $e49 ?e27 ?e27))
+(let (?e88 (ite $e45 ?e14 ?e16))
+(let (?e89 (ite $e42 ?e26 ?e5))
+(let (?e90 (ite $e51 ?e10 ?e12))
+(let (?e91 (ite $e46 ?e26 ?e16))
+(let (?e92 (ite $e35 ?e24 v1))
+(let (?e93 (ite $e32 ?e8 ?e91))
+(let (?e94 (ite $e30 ?e80 ?e15))
+(let (?e95 (ite $e56 ?e75 ?e27))
+(let (?e96 (ite $e64 ?e79 ?e19))
+(let (?e97 (ite $e44 ?e77 ?e84))
+(let (?e98 (ite $e62 ?e25 ?e71))
+(let (?e99 (ite $e65 ?e91 ?e21))
+(let (?e100 (ite $e33 ?e97 ?e14))
+(let (?e101 (ite $e45 ?e90 ?e7))
+(let (?e102 (ite $e41 ?e78 ?e89))
+(let (?e103 (ite $e36 ?e7 ?e81))
+(let (?e104 (ite $e48 ?e74 ?e16))
+(let (?e105 (ite $e31 ?e24 ?e81))
+(let (?e106 (ite $e40 ?e83 ?e71))
+(let (?e107 (ite $e67 ?e11 ?e10))
+(let (?e108 (ite $e52 ?e104 ?e76))
+(let (?e109 (ite $e55 ?e14 ?e14))
+(let (?e110 (ite $e61 ?e102 ?e80))
+(let (?e111 (ite $e34 ?e74 v2))
+(let (?e112 (ite $e54 ?e21 ?e106))
+(let (?e113 (ite $e28 ?e93 ?e20))
+(let (?e114 (ite $e37 ?e8 ?e83))
+(let (?e115 (ite $e55 ?e113 ?e89))
+(let (?e116 (ite $e58 ?e7 ?e25))
+(let (?e117 (ite $e60 ?e7 ?e75))
+(let (?e118 (ite $e43 ?e75 ?e16))
+(let (?e119 (ite $e53 ?e74 ?e26))
+(let (?e120 (ite $e68 ?e76 ?e25))
+(flet ($e121 (< ?e90 ?e9))
+(flet ($e122 (distinct ?e99 v0))
+(flet ($e123 (= ?e116 ?e23))
+(flet ($e124 (= ?e86 ?e99))
+(flet ($e125 (>= ?e78 ?e18))
+(flet ($e126 (> ?e99 ?e75))
+(flet ($e127 (<= ?e84 ?e107))
+(flet ($e128 (>= ?e9 ?e69))
+(flet ($e129 (= ?e95 ?e79))
+(flet ($e130 (p0 ?e103 ?e16))
+(flet ($e131 (<= ?e83 ?e104))
+(flet ($e132 (p0 ?e119 ?e97))
+(flet ($e133 (p0 ?e96 ?e89))
+(flet ($e134 (<= ?e100 ?e21))
+(flet ($e135 (= ?e102 ?e18))
+(flet ($e136 (<= ?e81 ?e16))
+(flet ($e137 (distinct ?e70 ?e94))
+(flet ($e138 (= ?e114 ?e112))
+(flet ($e139 (= ?e107 ?e89))
+(flet ($e140 (p0 ?e110 v2))
+(flet ($e141 (< ?e21 ?e114))
+(flet ($e142 (p0 ?e20 v2))
+(flet ($e143 (< ?e100 ?e94))
+(flet ($e144 (distinct ?e94 ?e26))
+(flet ($e145 (= ?e109 ?e88))
+(flet ($e146 (= ?e16 ?e100))
+(flet ($e147 (= ?e99 ?e87))
+(flet ($e148 (<= ?e87 ?e86))
+(flet ($e149 (p0 ?e73 ?e96))
+(flet ($e150 (> ?e12 ?e94))
+(flet ($e151 (distinct ?e95 ?e71))
+(flet ($e152 (distinct ?e19 ?e101))
+(flet ($e153 (p0 ?e84 ?e96))
+(flet ($e154 (= ?e99 ?e111))
+(flet ($e155 (p0 ?e14 ?e118))
+(flet ($e156 (<= ?e70 ?e25))
+(flet ($e157 (= ?e19 ?e98))
+(flet ($e158 (< ?e99 ?e90))
+(flet ($e159 (>= ?e14 ?e15))
+(flet ($e160 (<= v2 ?e120))
+(flet ($e161 (<= ?e21 ?e75))
+(flet ($e162 (< ?e114 ?e6))
+(flet ($e163 (> ?e99 ?e116))
+(flet ($e164 (<= ?e89 ?e11))
+(flet ($e165 (distinct ?e9 ?e10))
+(flet ($e166 (> ?e27 ?e97))
+(flet ($e167 (< ?e119 ?e10))
+(flet ($e168 (< ?e69 ?e79))
+(flet ($e169 (<= ?e22 ?e7))
+(flet ($e170 (= ?e117 ?e17))
+(flet ($e171 (>= ?e72 ?e16))
+(flet ($e172 (>= ?e12 ?e114))
+(flet ($e173 (distinct ?e119 ?e27))
+(flet ($e174 (<= ?e72 ?e119))
+(flet ($e175 (= ?e119 ?e118))
+(flet ($e176 (distinct ?e80 ?e73))
+(flet ($e177 (> ?e10 ?e18))
+(flet ($e178 (> ?e115 ?e15))
+(flet ($e179 (= ?e13 ?e72))
+(flet ($e180 (>= ?e110 ?e111))
+(flet ($e181 (< v0 ?e87))
+(flet ($e182 (< ?e72 ?e70))
+(flet ($e183 (<= ?e13 ?e9))
+(flet ($e184 (>= ?e7 ?e20))
+(flet ($e185 (<= ?e77 ?e23))
+(flet ($e186 (< ?e105 ?e102))
+(flet ($e187 (<= ?e78 ?e109))
+(flet ($e188 (distinct ?e89 ?e97))
+(flet ($e189 (p0 ?e118 ?e97))
+(flet ($e190 (> ?e81 ?e111))
+(flet ($e191 (> ?e14 ?e78))
+(flet ($e192 (< ?e101 ?e97))
+(flet ($e193 (distinct ?e12 ?e16))
+(flet ($e194 (< ?e113 ?e92))
+(flet ($e195 (>= ?e100 ?e87))
+(flet ($e196 (>= ?e103 ?e12))
+(flet ($e197 (p0 ?e116 ?e13))
+(flet ($e198 (>= ?e85 ?e13))
+(flet ($e199 (p0 ?e107 ?e120))
+(flet ($e200 (> ?e96 ?e74))
+(flet ($e201 (<= ?e113 ?e113))
+(flet ($e202 (>= ?e16 ?e103))
+(flet ($e203 (>= ?e72 ?e11))
+(flet ($e204 (> ?e27 ?e25))
+(flet ($e205 (distinct ?e25 ?e15))
+(flet ($e206 (distinct v1 ?e85))
+(flet ($e207 (p0 ?e95 ?e75))
+(flet ($e208 (< ?e92 ?e84))
+(flet ($e209 (< ?e91 ?e115))
+(flet ($e210 (distinct ?e13 ?e75))
+(flet ($e211 (= ?e91 ?e69))
+(flet ($e212 (p0 ?e13 ?e23))
+(flet ($e213 (>= ?e96 ?e100))
+(flet ($e214 (>= ?e72 ?e111))
+(flet ($e215 (p0 ?e97 ?e112))
+(flet ($e216 (>= ?e78 ?e98))
+(flet ($e217 (= ?e120 ?e101))
+(flet ($e218 (<= ?e72 ?e71))
+(flet ($e219 (p0 ?e90 ?e103))
+(flet ($e220 (< ?e117 ?e113))
+(flet ($e221 (>= ?e118 ?e84))
+(flet ($e222 (> ?e11 ?e104))
+(flet ($e223 (< ?e77 ?e111))
+(flet ($e224 (<= ?e21 ?e7))
+(flet ($e225 (>= ?e16 ?e74))
+(flet ($e226 (<= ?e91 ?e74))
+(flet ($e227 (p0 v2 ?e70))
+(flet ($e228 (p0 ?e101 ?e83))
+(flet ($e229 (>= ?e10 ?e8))
+(flet ($e230 (> ?e110 ?e72))
+(flet ($e231 (< ?e84 ?e20))
+(flet ($e232 (p0 ?e79 ?e26))
+(flet ($e233 (= ?e113 ?e81))
+(flet ($e234 (p0 ?e14 ?e90))
+(flet ($e235 (distinct ?e96 ?e15))
+(flet ($e236 (distinct ?e96 ?e7))
+(flet ($e237 (p0 ?e87 ?e104))
+(flet ($e238 (= ?e110 ?e71))
+(flet ($e239 (< ?e70 ?e7))
+(flet ($e240 (>= ?e13 ?e112))
+(flet ($e241 (p0 ?e24 ?e93))
+(flet ($e242 (<= ?e102 ?e87))
+(flet ($e243 (p0 ?e73 ?e25))
+(flet ($e244 (distinct ?e24 ?e116))
+(flet ($e245 (< ?e84 ?e78))
+(flet ($e246 (<= ?e104 ?e100))
+(flet ($e247 (= ?e18 ?e74))
+(flet ($e248 (< ?e16 ?e8))
+(flet ($e249 (< ?e93 ?e25))
+(flet ($e250 (>= ?e88 ?e81))
+(flet ($e251 (>= ?e98 ?e109))
+(flet ($e252 (>= ?e21 ?e13))
+(flet ($e253 (p0 v2 ?e74))
+(flet ($e254 (distinct ?e24 ?e27))
+(flet ($e255 (>= ?e120 ?e111))
+(flet ($e256 (>= ?e81 ?e14))
+(flet ($e257 (<= ?e87 ?e21))
+(flet ($e258 (p0 ?e74 ?e12))
+(flet ($e259 (distinct ?e5 ?e9))
+(flet ($e260 (>= ?e105 ?e79))
+(flet ($e261 (<= v2 ?e108))
+(flet ($e262 (= ?e96 ?e6))
+(flet ($e263 (= ?e5 ?e77))
+(flet ($e264 (>= v0 ?e23))
+(flet ($e265 (= ?e107 ?e72))
+(flet ($e266 (= ?e110 ?e95))
+(flet ($e267 (< ?e90 ?e117))
+(flet ($e268 (= v2 ?e23))
+(flet ($e269 (<= ?e77 ?e12))
+(flet ($e270 (<= ?e104 ?e111))
+(flet ($e271 (= ?e93 ?e14))
+(flet ($e272 (p0 ?e72 ?e79))
+(flet ($e273 (distinct ?e8 ?e20))
+(flet ($e274 (p0 ?e96 ?e112))
+(flet ($e275 (= ?e92 ?e24))
+(flet ($e276 (>= ?e16 ?e22))
+(flet ($e277 (= ?e19 ?e10))
+(flet ($e278 (<= ?e20 ?e86))
+(flet ($e279 (< ?e116 ?e118))
+(flet ($e280 (>= ?e74 ?e5))
+(flet ($e281 (<= ?e79 ?e105))
+(flet ($e282 (< ?e115 ?e70))
+(flet ($e283 (<= ?e13 ?e103))
+(flet ($e284 (p0 ?e27 ?e87))
+(flet ($e285 (p0 v0 ?e88))
+(flet ($e286 (<= ?e81 ?e104))
+(flet ($e287 (= ?e6 ?e99))
+(flet ($e288 (= ?e114 ?e87))
+(flet ($e289 (distinct ?e77 ?e71))
+(flet ($e290 (distinct ?e15 ?e15))
+(flet ($e291 (< ?e79 ?e72))
+(flet ($e292 (< ?e19 ?e8))
+(flet ($e293 (p0 ?e109 ?e5))
+(flet ($e294 (p0 v1 ?e19))
+(flet ($e295 (p0 ?e75 ?e104))
+(flet ($e296 (>= ?e100 ?e110))
+(flet ($e297 (>= ?e101 ?e23))
+(flet ($e298 (distinct ?e21 ?e107))
+(flet ($e299 (= ?e27 ?e101))
+(flet ($e300 (distinct ?e116 v1))
+(flet ($e301 (> ?e22 ?e5))
+(flet ($e302 (distinct ?e102 ?e80))
+(flet ($e303 (p0 ?e112 ?e84))
+(flet ($e304 (<= ?e111 ?e78))
+(flet ($e305 (= ?e75 ?e9))
+(flet ($e306 (= ?e80 ?e20))
+(flet ($e307 (< ?e80 ?e80))
+(flet ($e308 (distinct ?e13 ?e9))
+(flet ($e309 (p0 ?e6 ?e14))
+(flet ($e310 (> ?e70 ?e91))
+(flet ($e311 (> ?e16 ?e8))
+(flet ($e312 (<= ?e13 ?e95))
+(flet ($e313 (> ?e92 ?e95))
+(flet ($e314 (< ?e96 ?e87))
+(flet ($e315 (= ?e91 ?e92))
+(flet ($e316 (>= ?e120 ?e117))
+(flet ($e317 (p0 ?e13 ?e93))
+(flet ($e318 (distinct ?e120 ?e24))
+(flet ($e319 (>= ?e15 ?e86))
+(flet ($e320 (> ?e94 ?e84))
+(flet ($e321 (> ?e20 ?e99))
+(flet ($e322 (< ?e23 ?e71))
+(flet ($e323 (= ?e119 ?e73))
+(flet ($e324 (<= ?e82 ?e94))
+(flet ($e325 (<= ?e108 ?e107))
+(flet ($e326 (p0 ?e13 ?e80))
+(flet ($e327 (<= ?e87 ?e102))
+(flet ($e328 (<= ?e74 ?e89))
+(flet ($e329 (= ?e73 ?e11))
+(flet ($e330 (distinct ?e15 ?e106))
+(flet ($e331 (<= ?e115 ?e110))
+(flet ($e332 (p0 v0 ?e69))
+(flet ($e333 (>= v1 ?e9))
+(flet ($e334 (> v1 v2))
+(flet ($e335 (< ?e80 ?e95))
+(flet ($e336 (>= ?e114 ?e69))
+(flet ($e337 (distinct ?e80 ?e118))
+(flet ($e338 (p0 ?e16 ?e91))
+(flet ($e339 (p0 ?e100 ?e85))
+(flet ($e340 (= ?e13 ?e73))
+(flet ($e341 (= ?e92 ?e12))
+(flet ($e342 (p0 ?e100 ?e72))
+(flet ($e343 (= ?e26 ?e119))
+(flet ($e344 (< ?e20 ?e20))
+(flet ($e345 (<= ?e100 ?e94))
+(flet ($e346 (> ?e114 ?e116))
+(flet ($e347 (p0 ?e102 ?e19))
+(flet ($e348 (= ?e113 ?e13))
+(flet ($e349 (distinct ?e108 ?e5))
+(flet ($e350 (< ?e14 ?e118))
+(flet ($e351 (< ?e72 ?e110))
+(flet ($e352 (> ?e83 ?e114))
+(flet ($e353 (distinct ?e106 ?e24))
+(flet ($e354 (<= ?e24 ?e83))
+(flet ($e355 (p0 ?e116 ?e101))
+(flet ($e356 (< ?e110 ?e96))
+(flet ($e357 (= ?e12 v0))
+(flet ($e358 (p0 ?e108 ?e113))
+(flet ($e359 (>= ?e27 ?e81))
+(flet ($e360 (<= ?e109 ?e75))
+(flet ($e361 (= ?e102 ?e26))
+(flet ($e362 (distinct ?e108 ?e104))
+(flet ($e363 (<= ?e108 ?e26))
+(flet ($e364 (<= ?e114 ?e69))
+(flet ($e365 (>= ?e113 ?e82))
+(flet ($e366 (= ?e115 v1))
+(flet ($e367 (= ?e25 ?e27))
+(flet ($e368 (p0 ?e27 ?e91))
+(flet ($e369 (<= ?e13 ?e116))
+(flet ($e370 (<= ?e87 ?e114))
+(flet ($e371 (< ?e25 ?e108))
+(flet ($e372 (= ?e108 ?e9))
+(flet ($e373 (p0 ?e89 ?e117))
+(flet ($e374 (<= ?e13 ?e19))
+(flet ($e375 (p0 ?e12 ?e26))
+(flet ($e376 (< ?e20 ?e91))
+(flet ($e377 (distinct ?e107 ?e76))
+(flet ($e378 (if_then_else $e180 $e123 $e342))
+(flet ($e379 (if_then_else $e151 $e330 $e232))
+(flet ($e380 (if_then_else $e136 $e175 $e130))
+(flet ($e381 (if_then_else $e362 $e250 $e56))
+(flet ($e382 (not $e337))
+(flet ($e383 (xor $e194 $e150))
+(flet ($e384 (iff $e44 $e65))
+(flet ($e385 (xor $e300 $e160))
+(flet ($e386 (xor $e158 $e241))
+(flet ($e387 (not $e286))
+(flet ($e388 (and $e168 $e55))
+(flet ($e389 (or $e143 $e153))
+(flet ($e390 (not $e289))
+(flet ($e391 (or $e191 $e235))
+(flet ($e392 (and $e42 $e184))
+(flet ($e393 (not $e170))
+(flet ($e394 (iff $e35 $e356))
+(flet ($e395 (xor $e128 $e207))
+(flet ($e396 (implies $e394 $e208))
+(flet ($e397 (not $e354))
+(flet ($e398 (not $e201))
+(flet ($e399 (if_then_else $e176 $e169 $e331))
+(flet ($e400 (and $e217 $e172))
+(flet ($e401 (and $e324 $e178))
+(flet ($e402 (iff $e387 $e279))
+(flet ($e403 (or $e204 $e374))
+(flet ($e404 (iff $e323 $e334))
+(flet ($e405 (xor $e302 $e247))
+(flet ($e406 (iff $e288 $e125))
+(flet ($e407 (or $e375 $e227))
+(flet ($e408 (and $e127 $e378))
+(flet ($e409 (iff $e58 $e284))
+(flet ($e410 (implies $e181 $e52))
+(flet ($e411 (implies $e166 $e385))
+(flet ($e412 (and $e41 $e306))
+(flet ($e413 (xor $e268 $e361))
+(flet ($e414 (and $e47 $e32))
+(flet ($e415 (iff $e228 $e339))
+(flet ($e416 (implies $e292 $e199))
+(flet ($e417 (implies $e252 $e39))
+(flet ($e418 (or $e37 $e351))
+(flet ($e419 (and $e209 $e49))
+(flet ($e420 (implies $e263 $e197))
+(flet ($e421 (if_then_else $e349 $e312 $e287))
+(flet ($e422 (implies $e353 $e249))
+(flet ($e423 (not $e388))
+(flet ($e424 (and $e296 $e310))
+(flet ($e425 (xor $e309 $e59))
+(flet ($e426 (and $e240 $e242))
+(flet ($e427 (if_then_else $e45 $e163 $e411))
+(flet ($e428 (not $e364))
+(flet ($e429 (if_then_else $e144 $e267 $e293))
+(flet ($e430 (if_then_else $e173 $e238 $e126))
+(flet ($e431 (implies $e338 $e48))
+(flet ($e432 (iff $e156 $e383))
+(flet ($e433 (or $e68 $e391))
+(flet ($e434 (xor $e262 $e304))
+(flet ($e435 (not $e318))
+(flet ($e436 (iff $e29 $e155))
+(flet ($e437 (not $e121))
+(flet ($e438 (implies $e389 $e36))
+(flet ($e439 (iff $e234 $e174))
+(flet ($e440 (iff $e253 $e314))
+(flet ($e441 (if_then_else $e137 $e278 $e355))
+(flet ($e442 (xor $e131 $e64))
+(flet ($e443 (or $e377 $e124))
+(flet ($e444 (implies $e346 $e122))
+(flet ($e445 (iff $e212 $e372))
+(flet ($e446 (implies $e195 $e277))
+(flet ($e447 (not $e430))
+(flet ($e448 (not $e192))
+(flet ($e449 (implies $e196 $e177))
+(flet ($e450 (or $e190 $e257))
+(flet ($e451 (iff $e215 $e412))
+(flet ($e452 (implies $e274 $e418))
+(flet ($e453 (if_then_else $e336 $e322 $e149))
+(flet ($e454 (if_then_else $e447 $e189 $e269))
+(flet ($e455 (not $e218))
+(flet ($e456 (xor $e152 $e224))
+(flet ($e457 (not $e358))
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+