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diff --git a/src/options/strings_options b/src/options/strings_options
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+#
+# Option specification file for CVC4
+# See src/options/base_options for a description of this file format
+#
+
+module STRINGS "options/strings_options.h" Strings theory
+
+option stringExp strings-exp --strings-exp bool :default false :read-write
+ experimental features in the theory of strings
+
+# :predicate-include "smt/smt_engine.h"
+option stringLB strings-lb --strings-lb=N unsigned :default 0 :predicate options::less_equal(2) :predicate-include "options/base_handlers.h"
+ the strategy of LB rule application: 0-lazy, 1-eager, 2-no
+
+# :predicate-include "smt/smt_engine.h"
+option stdASCII strings-std-ascii --strings-std-ascii bool :default true :predicate options::less_equal(2) :predicate-include "options/base_handlers.h"
+ the alphabet contains only characters from the standard ASCII or the extended one
+
+option stringFMF strings-fmf --strings-fmf bool :default false :read-write
+ the finite model finding used by the theory of strings
+ 
+option stringEager strings-eager --strings-eager bool :default false
+ strings eager check
+
+option stringEIT strings-eit --strings-eit bool :default false
+ the eager intersection used by the theory of strings
+
+option stringOpt1 strings-opt1 --strings-opt1 bool :default true
+ internal option1 for strings: normal form
+
+option stringOpt2 strings-opt2 --strings-opt2 bool :default false
+ internal option2 for strings: constant regexp splitting
+
+option stringIgnNegMembership strings-inm --strings-inm bool :default false
+ internal for strings: ignore negative membership constraints (fragment checking is needed, left to users for now)
+
+#expert-option stringCharCardinality strings-alphabet-card --strings-alphabet-card=N int16_t :default 128 :read-write
+# the cardinality of the characters used by the theory of strings, default 128 (for standard ASCII) or 256 (for extended ASCII)
+
+option stringLazyPreproc strings-lazy-pp --strings-lazy-pp bool :default true
+ perform string preprocessing lazily upon assertion
+option stringLazyPreproc2 strings-lazy-pp2 --strings-lazy-pp2 bool :default true
+ perform string preprocessing lazily upon failure to reduce 
+
+option stringLenGeqZ strings-len-geqz --strings-len-geqz bool :default false
+ strings length greater than zero lemmas
+
+option stringLenNorm strings-len-norm --strings-len-norm bool :default true
+ strings length normalization lemma
+option stringSplitEmp strings-sp-emp --strings-sp-emp bool :default true
+ strings split on empty string
+option stringInferSym strings-infer-sym --strings-infer-sym bool :default true
+ strings split on empty string
+option stringEagerLen strings-eager-len --strings-eager-len bool :default true
+ strings eager length lemmas
+
+
+endmodule