# File UNITY_tactics.ML

    (*  Title:      HOL/UNITY/UNITY_tactics.ML
        ID:         $Id: UNITY_tactics.ML,v 1.7 2003/02/08 15:05:36 paulson Exp $
        Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
        Copyright   2003  University of Cambridge

    Specialized UNITY tactics, and ML bindings of theorems
    *)

    (*ListOrder*)
    val Le_def = thm "Le_def";
    val Ge_def = thm "Ge_def";
    val prefix_def = thm "prefix_def";
    val Nil_genPrefix = thm "Nil_genPrefix";
    val genPrefix_length_le = thm "genPrefix_length_le";
    val cons_genPrefixE = thm "cons_genPrefixE";
    val Cons_genPrefix_Cons = thm "Cons_genPrefix_Cons";
    val refl_genPrefix = thm "refl_genPrefix";
    val genPrefix_refl = thm "genPrefix_refl";
    val genPrefix_mono = thm "genPrefix_mono";
    val append_genPrefix = thm "append_genPrefix";
    val genPrefix_trans_O = thm "genPrefix_trans_O";
    val genPrefix_trans = thm "genPrefix_trans";
    val prefix_genPrefix_trans = thm "prefix_genPrefix_trans";
    val genPrefix_prefix_trans = thm "genPrefix_prefix_trans";
    val trans_genPrefix = thm "trans_genPrefix";
    val genPrefix_antisym = thm "genPrefix_antisym";
    val antisym_genPrefix = thm "antisym_genPrefix";
    val genPrefix_Nil = thm "genPrefix_Nil";
    val same_genPrefix_genPrefix = thm "same_genPrefix_genPrefix";
    val genPrefix_Cons = thm "genPrefix_Cons";
    val genPrefix_take_append = thm "genPrefix_take_append";
    val genPrefix_append_both = thm "genPrefix_append_both";
    val append_cons_eq = thm "append_cons_eq";
    val append_one_genPrefix = thm "append_one_genPrefix";
    val genPrefix_imp_nth = thm "genPrefix_imp_nth";
    val nth_imp_genPrefix = thm "nth_imp_genPrefix";
    val genPrefix_iff_nth = thm "genPrefix_iff_nth";
    val prefix_refl = thm "prefix_refl";
    val prefix_trans = thm "prefix_trans";
    val prefix_antisym = thm "prefix_antisym";
    val prefix_less_le = thm "prefix_less_le";
    val set_mono = thm "set_mono";
    val Nil_prefix = thm "Nil_prefix";
    val prefix_Nil = thm "prefix_Nil";
    val Cons_prefix_Cons = thm "Cons_prefix_Cons";
    val same_prefix_prefix = thm "same_prefix_prefix";
    val append_prefix = thm "append_prefix";
    val prefix_appendI = thm "prefix_appendI";
    val prefix_Cons = thm "prefix_Cons";
    val append_one_prefix = thm "append_one_prefix";
    val prefix_length_le = thm "prefix_length_le";
    val strict_prefix_length_less = thm "strict_prefix_length_less";
    val mono_length = thm "mono_length";
    val prefix_iff = thm "prefix_iff";
    val prefix_snoc = thm "prefix_snoc";
    val prefix_append_iff = thm "prefix_append_iff";
    val common_prefix_linear = thm "common_prefix_linear";
    val reflexive_Le = thm "reflexive_Le";
    val antisym_Le = thm "antisym_Le";
    val trans_Le = thm "trans_Le";
    val pfixLe_refl = thm "pfixLe_refl";
    val pfixLe_trans = thm "pfixLe_trans";
    val pfixLe_antisym = thm "pfixLe_antisym";
    val prefix_imp_pfixLe = thm "prefix_imp_pfixLe";
    val reflexive_Ge = thm "reflexive_Ge";
    val antisym_Ge = thm "antisym_Ge";
    val trans_Ge = thm "trans_Ge";
    val pfixGe_refl = thm "pfixGe_refl";
    val pfixGe_trans = thm "pfixGe_trans";
    val pfixGe_antisym = thm "pfixGe_antisym";
    val prefix_imp_pfixGe = thm "prefix_imp_pfixGe";

    (*UNITY*)
    val mk_total_program_def = thm "mk_total_program_def";
    val totalize_act_def = thm "totalize_act_def";
    val constrains_def = thm "constrains_def";
    val stable_def = thm "stable_def";
    val invariant_def = thm "invariant_def";
    val increasing_def = thm "increasing_def";
    val Allowed_def = thm "Allowed_def";
    val Id_in_Acts = thm "Id_in_Acts";
    val insert_Id_Acts = thm "insert_Id_Acts";
    val Id_in_AllowedActs = thm "Id_in_AllowedActs";
    val insert_Id_AllowedActs = thm "insert_Id_AllowedActs";
    val Init_eq = thm "Init_eq";
    val Acts_eq = thm "Acts_eq";
    val AllowedActs_eq = thm "AllowedActs_eq";
    val surjective_mk_program = thm "surjective_mk_program";
    val program_equalityI = thm "program_equalityI";
    val program_equalityE = thm "program_equalityE";
    val program_equality_iff = thm "program_equality_iff";
    val def_prg_Init = thm "def_prg_Init";
    val def_prg_Acts = thm "def_prg_Acts";
    val def_prg_AllowedActs = thm "def_prg_AllowedActs";
    val def_act_simp = thm "def_act_simp";
    val def_set_simp = thm "def_set_simp";
    val constrainsI = thm "constrainsI";
    val constrainsD = thm "constrainsD";
    val constrains_empty = thm "constrains_empty";
    val constrains_empty2 = thm "constrains_empty2";
    val constrains_UNIV = thm "constrains_UNIV";
    val constrains_UNIV2 = thm "constrains_UNIV2";
    val constrains_weaken_R = thm "constrains_weaken_R";
    val constrains_weaken_L = thm "constrains_weaken_L";
    val constrains_weaken = thm "constrains_weaken";
    val constrains_Un = thm "constrains_Un";
    val constrains_UN = thm "constrains_UN";
    val constrains_Un_distrib = thm "constrains_Un_distrib";
    val constrains_UN_distrib = thm "constrains_UN_distrib";
    val constrains_Int_distrib = thm "constrains_Int_distrib";
    val constrains_INT_distrib = thm "constrains_INT_distrib";
    val constrains_Int = thm "constrains_Int";
    val constrains_INT = thm "constrains_INT";
    val constrains_imp_subset = thm "constrains_imp_subset";
    val constrains_trans = thm "constrains_trans";
    val constrains_cancel = thm "constrains_cancel";
    val unlessI = thm "unlessI";
    val unlessD = thm "unlessD";
    val stableI = thm "stableI";
    val stableD = thm "stableD";
    val stable_UNIV = thm "stable_UNIV";
    val stable_Un = thm "stable_Un";
    val stable_UN = thm "stable_UN";
    val stable_Int = thm "stable_Int";
    val stable_INT = thm "stable_INT";
    val stable_constrains_Un = thm "stable_constrains_Un";
    val stable_constrains_Int = thm "stable_constrains_Int";
    val stable_constrains_stable = thm "stable_constrains_stable";
    val invariantI = thm "invariantI";
    val invariant_Int = thm "invariant_Int";
    val increasingD = thm "increasingD";
    val increasing_constant = thm "increasing_constant";
    val mono_increasing_o = thm "mono_increasing_o";
    val strict_increasingD = thm "strict_increasingD";
    val elimination = thm "elimination";
    val elimination_sing = thm "elimination_sing";
    val constrains_strongest_rhs = thm "constrains_strongest_rhs";
    val strongest_rhs_is_strongest = thm "strongest_rhs_is_strongest";
    val Un_Diff_Diff = thm "Un_Diff_Diff";
    val Int_Union_Union = thm "Int_Union_Union";
    val Image_less_than = thm "Image_less_than";
    val Image_inverse_less_than = thm "Image_inverse_less_than";
    val totalize_constrains_iff = thm "totalize_constrains_iff";

    (*WFair*)
    val stable_transient_empty = thm "stable_transient_empty";
    val transient_strengthen = thm "transient_strengthen";
    val transientI = thm "transientI";
    val totalize_transientI = thm "totalize_transientI";
    val transientE = thm "transientE";
    val transient_empty = thm "transient_empty";
    val ensuresI = thm "ensuresI";
    val ensuresD = thm "ensuresD";
    val ensures_weaken_R = thm "ensures_weaken_R";
    val stable_ensures_Int = thm "stable_ensures_Int";
    val stable_transient_ensures = thm "stable_transient_ensures";
    val ensures_eq = thm "ensures_eq";
    val leadsTo_Basis = thm "leadsTo_Basis";
    val leadsTo_Trans = thm "leadsTo_Trans";
    val transient_imp_leadsTo = thm "transient_imp_leadsTo";
    val leadsTo_Un_duplicate = thm "leadsTo_Un_duplicate";
    val leadsTo_Un_duplicate2 = thm "leadsTo_Un_duplicate2";
    val leadsTo_Union = thm "leadsTo_Union";
    val leadsTo_Union_Int = thm "leadsTo_Union_Int";
    val leadsTo_UN = thm "leadsTo_UN";
    val leadsTo_Un = thm "leadsTo_Un";
    val single_leadsTo_I = thm "single_leadsTo_I";
    val leadsTo_induct = thm "leadsTo_induct";
    val subset_imp_ensures = thm "subset_imp_ensures";
    val subset_imp_leadsTo = thm "subset_imp_leadsTo";
    val leadsTo_refl = thm "leadsTo_refl";
    val empty_leadsTo = thm "empty_leadsTo";
    val leadsTo_UNIV = thm "leadsTo_UNIV";
    val leadsTo_induct_pre = thm "leadsTo_induct_pre";
    val leadsTo_weaken_R = thm "leadsTo_weaken_R";
    val leadsTo_weaken_L = thm "leadsTo_weaken_L";
    val leadsTo_Un_distrib = thm "leadsTo_Un_distrib";
    val leadsTo_UN_distrib = thm "leadsTo_UN_distrib";
    val leadsTo_Union_distrib = thm "leadsTo_Union_distrib";
    val leadsTo_weaken = thm "leadsTo_weaken";
    val leadsTo_Diff = thm "leadsTo_Diff";
    val leadsTo_UN_UN = thm "leadsTo_UN_UN";
    val leadsTo_Un_Un = thm "leadsTo_Un_Un";
    val leadsTo_cancel2 = thm "leadsTo_cancel2";
    val leadsTo_cancel_Diff2 = thm "leadsTo_cancel_Diff2";
    val leadsTo_cancel1 = thm "leadsTo_cancel1";
    val leadsTo_cancel_Diff1 = thm "leadsTo_cancel_Diff1";
    val leadsTo_empty = thm "leadsTo_empty";
    val psp_stable = thm "psp_stable";
    val psp_stable2 = thm "psp_stable2";
    val psp_ensures = thm "psp_ensures";
    val psp = thm "psp";
    val psp2 = thm "psp2";
    val psp_unless = thm "psp_unless";
    val leadsTo_wf_induct = thm "leadsTo_wf_induct";
    val bounded_induct = thm "bounded_induct";
    val lessThan_induct = thm "lessThan_induct";
    val lessThan_bounded_induct = thm "lessThan_bounded_induct";
    val greaterThan_bounded_induct = thm "greaterThan_bounded_induct";
    val wlt_leadsTo = thm "wlt_leadsTo";
    val leadsTo_subset = thm "leadsTo_subset";
    val leadsTo_eq_subset_wlt = thm "leadsTo_eq_subset_wlt";
    val wlt_increasing = thm "wlt_increasing";
    val leadsTo_123 = thm "leadsTo_123";
    val wlt_constrains_wlt = thm "wlt_constrains_wlt";
    val completion = thm "completion";
    val finite_completion = thm "finite_completion";
    val stable_completion = thm "stable_completion";
    val finite_stable_completion = thm "finite_stable_completion";

    (*Constrains*)
    val Increasing_def = thm "Increasing_def";
    val reachable_Init = thm "reachable.Init";
    val reachable_Acts = thm "reachable.Acts";
    val reachable_equiv_traces = thm "reachable_equiv_traces";
    val Init_subset_reachable = thm "Init_subset_reachable";
    val stable_reachable = thm "stable_reachable";
    val invariant_reachable = thm "invariant_reachable";
    val invariant_includes_reachable = thm "invariant_includes_reachable";
    val constrains_reachable_Int = thm "constrains_reachable_Int";
    val Constrains_eq_constrains = thm "Constrains_eq_constrains";
    val constrains_imp_Constrains = thm "constrains_imp_Constrains";
    val stable_imp_Stable = thm "stable_imp_Stable";
    val ConstrainsI = thm "ConstrainsI";
    val Constrains_empty = thm "Constrains_empty";
    val Constrains_UNIV = thm "Constrains_UNIV";
    val Constrains_weaken_R = thm "Constrains_weaken_R";
    val Constrains_weaken_L = thm "Constrains_weaken_L";
    val Constrains_weaken = thm "Constrains_weaken";
    val Constrains_Un = thm "Constrains_Un";
    val Constrains_UN = thm "Constrains_UN";
    val Constrains_Int = thm "Constrains_Int";
    val Constrains_INT = thm "Constrains_INT";
    val Constrains_imp_subset = thm "Constrains_imp_subset";
    val Constrains_trans = thm "Constrains_trans";
    val Constrains_cancel = thm "Constrains_cancel";
    val Stable_eq = thm "Stable_eq";
    val Stable_eq_stable = thm "Stable_eq_stable";
    val StableI = thm "StableI";
    val StableD = thm "StableD";
    val Stable_Un = thm "Stable_Un";
    val Stable_Int = thm "Stable_Int";
    val Stable_Constrains_Un = thm "Stable_Constrains_Un";
    val Stable_Constrains_Int = thm "Stable_Constrains_Int";
    val Stable_UN = thm "Stable_UN";
    val Stable_INT = thm "Stable_INT";
    val Stable_reachable = thm "Stable_reachable";
    val IncreasingD = thm "IncreasingD";
    val mono_Increasing_o = thm "mono_Increasing_o";
    val strict_IncreasingD = thm "strict_IncreasingD";
    val increasing_imp_Increasing = thm "increasing_imp_Increasing";
    val Increasing_constant = thm "Increasing_constant";
    val Elimination = thm "Elimination";
    val Elimination_sing = thm "Elimination_sing";
    val AlwaysI = thm "AlwaysI";
    val AlwaysD = thm "AlwaysD";
    val AlwaysE = thm "AlwaysE";
    val Always_imp_Stable = thm "Always_imp_Stable";
    val Always_includes_reachable = thm "Always_includes_reachable";
    val invariant_imp_Always = thm "invariant_imp_Always";
    val Always_reachable = thm "Always_reachable";
    val Always_eq_invariant_reachable = thm "Always_eq_invariant_reachable";
    val Always_eq_includes_reachable = thm "Always_eq_includes_reachable";
    val Always_UNIV_eq = thm "Always_UNIV_eq";
    val UNIV_AlwaysI = thm "UNIV_AlwaysI";
    val Always_eq_UN_invariant = thm "Always_eq_UN_invariant";
    val Always_weaken = thm "Always_weaken";
    val Always_Constrains_pre = thm "Always_Constrains_pre";
    val Always_Constrains_post = thm "Always_Constrains_post";
    val Always_ConstrainsI = thm "Always_ConstrainsI";
    val Always_ConstrainsD = thm "Always_ConstrainsD";
    val Always_Constrains_weaken = thm "Always_Constrains_weaken";
    val Always_Int_distrib = thm "Always_Int_distrib";
    val Always_INT_distrib = thm "Always_INT_distrib";
    val Always_Int_I = thm "Always_Int_I";
    val Always_Compl_Un_eq = thm "Always_Compl_Un_eq";
    val Always_thin = thm "Always_thin";

    (*FP*)
    val stable_FP_Orig_Int = thm "stable_FP_Orig_Int";
    val FP_Orig_weakest = thm "FP_Orig_weakest";
    val stable_FP_Int = thm "stable_FP_Int";
    val FP_equivalence = thm "FP_equivalence";
    val FP_weakest = thm "FP_weakest";
    val Compl_FP = thm "Compl_FP";
    val Diff_FP = thm "Diff_FP";

    (*SubstAx*)
    val LeadsTo_eq_leadsTo = thm "LeadsTo_eq_leadsTo";
    val Always_LeadsTo_pre = thm "Always_LeadsTo_pre";
    val Always_LeadsTo_post = thm "Always_LeadsTo_post";
    val Always_LeadsToI = thm "Always_LeadsToI";
    val Always_LeadsToD = thm "Always_LeadsToD";
    val leadsTo_imp_LeadsTo = thm "leadsTo_imp_LeadsTo";
    val LeadsTo_Trans = thm "LeadsTo_Trans";
    val LeadsTo_Union = thm "LeadsTo_Union";
    val LeadsTo_UNIV = thm "LeadsTo_UNIV";
    val LeadsTo_Un_duplicate = thm "LeadsTo_Un_duplicate";
    val LeadsTo_Un_duplicate2 = thm "LeadsTo_Un_duplicate2";
    val LeadsTo_UN = thm "LeadsTo_UN";
    val LeadsTo_Un = thm "LeadsTo_Un";
    val single_LeadsTo_I = thm "single_LeadsTo_I";
    val subset_imp_LeadsTo = thm "subset_imp_LeadsTo";
    val empty_LeadsTo = thm "empty_LeadsTo";
    val LeadsTo_weaken_R = thm "LeadsTo_weaken_R";
    val LeadsTo_weaken_L = thm "LeadsTo_weaken_L";
    val LeadsTo_weaken = thm "LeadsTo_weaken";
    val Always_LeadsTo_weaken = thm "Always_LeadsTo_weaken";
    val LeadsTo_Un_post = thm "LeadsTo_Un_post";
    val LeadsTo_Trans_Un = thm "LeadsTo_Trans_Un";
    val LeadsTo_Un_distrib = thm "LeadsTo_Un_distrib";
    val LeadsTo_UN_distrib = thm "LeadsTo_UN_distrib";
    val LeadsTo_Union_distrib = thm "LeadsTo_Union_distrib";
    val LeadsTo_Basis = thm "LeadsTo_Basis";
    val EnsuresI = thm "EnsuresI";
    val Always_LeadsTo_Basis = thm "Always_LeadsTo_Basis";
    val LeadsTo_Diff = thm "LeadsTo_Diff";
    val LeadsTo_UN_UN = thm "LeadsTo_UN_UN";
    val LeadsTo_UN_UN_noindex = thm "LeadsTo_UN_UN_noindex";
    val all_LeadsTo_UN_UN = thm "all_LeadsTo_UN_UN";
    val LeadsTo_Un_Un = thm "LeadsTo_Un_Un";
    val LeadsTo_cancel2 = thm "LeadsTo_cancel2";
    val LeadsTo_cancel_Diff2 = thm "LeadsTo_cancel_Diff2";
    val LeadsTo_cancel1 = thm "LeadsTo_cancel1";
    val LeadsTo_cancel_Diff1 = thm "LeadsTo_cancel_Diff1";
    val LeadsTo_empty = thm "LeadsTo_empty";
    val PSP_Stable = thm "PSP_Stable";
    val PSP_Stable2 = thm "PSP_Stable2";
    val PSP = thm "PSP";
    val PSP2 = thm "PSP2";
    val PSP_Unless = thm "PSP_Unless";
    val Stable_transient_Always_LeadsTo = thm "Stable_transient_Always_LeadsTo";
    val LeadsTo_wf_induct = thm "LeadsTo_wf_induct";
    val Bounded_induct = thm "Bounded_induct";
    val LessThan_induct = thm "LessThan_induct";
    val integ_0_le_induct = thm "integ_0_le_induct";
    val LessThan_bounded_induct = thm "LessThan_bounded_induct";
    val GreaterThan_bounded_induct = thm "GreaterThan_bounded_induct";
    val Completion = thm "Completion";
    val Finite_completion = thm "Finite_completion";
    val Stable_completion = thm "Stable_completion";
    val Finite_stable_completion = thm "Finite_stable_completion";

    (*Union*)
    val Init_SKIP = thm "Init_SKIP";
    val Acts_SKIP = thm "Acts_SKIP";
    val AllowedActs_SKIP = thm "AllowedActs_SKIP";
    val reachable_SKIP = thm "reachable_SKIP";
    val SKIP_in_constrains_iff = thm "SKIP_in_constrains_iff";
    val SKIP_in_Constrains_iff = thm "SKIP_in_Constrains_iff";
    val SKIP_in_stable = thm "SKIP_in_stable";
    val Init_Join = thm "Init_Join";
    val Acts_Join = thm "Acts_Join";
    val AllowedActs_Join = thm "AllowedActs_Join";
    val JN_empty = thm "JN_empty";
    val JN_insert = thm "JN_insert";
    val Init_JN = thm "Init_JN";
    val Acts_JN = thm "Acts_JN";
    val AllowedActs_JN = thm "AllowedActs_JN";
    val JN_cong = thm "JN_cong";
    val Join_commute = thm "Join_commute";
    val Join_assoc = thm "Join_assoc";
    val Join_left_commute = thm "Join_left_commute";
    val Join_SKIP_left = thm "Join_SKIP_left";
    val Join_SKIP_right = thm "Join_SKIP_right";
    val Join_absorb = thm "Join_absorb";
    val Join_left_absorb = thm "Join_left_absorb";
    val Join_ac = thms "Join_ac";
    val JN_absorb = thm "JN_absorb";
    val JN_Un = thm "JN_Un";
    val JN_constant = thm "JN_constant";
    val JN_Join_distrib = thm "JN_Join_distrib";
    val JN_Join_miniscope = thm "JN_Join_miniscope";
    val JN_Join_diff = thm "JN_Join_diff";
    val JN_constrains = thm "JN_constrains";
    val Join_constrains = thm "Join_constrains";
    val Join_unless = thm "Join_unless";
    val Join_constrains_weaken = thm "Join_constrains_weaken";
    val JN_constrains_weaken = thm "JN_constrains_weaken";
    val JN_stable = thm "JN_stable";
    val invariant_JN_I = thm "invariant_JN_I";
    val Join_stable = thm "Join_stable";
    val Join_increasing = thm "Join_increasing";
    val invariant_JoinI = thm "invariant_JoinI";
    val FP_JN = thm "FP_JN";
    val JN_transient = thm "JN_transient";
    val Join_transient = thm "Join_transient";
    val Join_transient_I1 = thm "Join_transient_I1";
    val Join_transient_I2 = thm "Join_transient_I2";
    val JN_ensures = thm "JN_ensures";
    val Join_ensures = thm "Join_ensures";
    val stable_Join_constrains = thm "stable_Join_constrains";
    val stable_Join_Always1 = thm "stable_Join_Always1";
    val stable_Join_Always2 = thm "stable_Join_Always2";
    val stable_Join_ensures1 = thm "stable_Join_ensures1";
    val stable_Join_ensures2 = thm "stable_Join_ensures2";
    val ok_SKIP1 = thm "ok_SKIP1";
    val ok_SKIP2 = thm "ok_SKIP2";
    val ok_Join_commute = thm "ok_Join_commute";
    val ok_commute = thm "ok_commute";
    val ok_sym = thm "ok_sym";
    val ok_iff_OK = thm "ok_iff_OK";
    val ok_Join_iff1 = thm "ok_Join_iff1";
    val ok_Join_iff2 = thm "ok_Join_iff2";
    val ok_Join_commute_I = thm "ok_Join_commute_I";
    val ok_JN_iff1 = thm "ok_JN_iff1";
    val ok_JN_iff2 = thm "ok_JN_iff2";
    val OK_iff_ok = thm "OK_iff_ok";
    val OK_imp_ok = thm "OK_imp_ok";
    val Allowed_SKIP = thm "Allowed_SKIP";
    val Allowed_Join = thm "Allowed_Join";
    val Allowed_JN = thm "Allowed_JN";
    val ok_iff_Allowed = thm "ok_iff_Allowed";
    val OK_iff_Allowed = thm "OK_iff_Allowed";
    val safety_prop_Acts_iff = thm "safety_prop_Acts_iff";
    val safety_prop_AllowedActs_iff_Allowed = thm "safety_prop_AllowedActs_iff_Allowed";
    val Allowed_eq = thm "Allowed_eq";
    val def_prg_Allowed = thm "def_prg_Allowed";
    val def_total_prg_Allowed = thm "def_total_prg_Allowed";
    val safety_prop_constrains = thm "safety_prop_constrains";
    val safety_prop_stable = thm "safety_prop_stable";
    val safety_prop_Int = thm "safety_prop_Int";
    val safety_prop_INTER1 = thm "safety_prop_INTER1";
    val safety_prop_INTER = thm "safety_prop_INTER";
    val def_UNION_ok_iff = thm "def_UNION_ok_iff";
    val totalize_JN = thm "totalize_JN";

    (*Comp*)
    val preserves_def = thm "preserves_def";
    val funPair_def = thm "funPair_def";
    val componentI = thm "componentI";
    val component_eq_subset = thm "component_eq_subset";
    val component_SKIP = thm "component_SKIP";
    val component_refl = thm "component_refl";
    val SKIP_minimal = thm "SKIP_minimal";
    val component_Join1 = thm "component_Join1";
    val component_Join2 = thm "component_Join2";
    val Join_absorb1 = thm "Join_absorb1";
    val Join_absorb2 = thm "Join_absorb2";
    val JN_component_iff = thm "JN_component_iff";
    val component_JN = thm "component_JN";
    val component_trans = thm "component_trans";
    val component_antisym = thm "component_antisym";
    val Join_component_iff = thm "Join_component_iff";
    val component_constrains = thm "component_constrains";
    val program_less_le = thm "program_less_le";
    val preservesI = thm "preservesI";
    val preserves_imp_eq = thm "preserves_imp_eq";
    val Join_preserves = thm "Join_preserves";
    val JN_preserves = thm "JN_preserves";
    val SKIP_preserves = thm "SKIP_preserves";
    val funPair_apply = thm "funPair_apply";
    val preserves_funPair = thm "preserves_funPair";
    val funPair_o_distrib = thm "funPair_o_distrib";
    val fst_o_funPair = thm "fst_o_funPair";
    val snd_o_funPair = thm "snd_o_funPair";
    val subset_preserves_o = thm "subset_preserves_o";
    val preserves_subset_stable = thm "preserves_subset_stable";
    val preserves_subset_increasing = thm "preserves_subset_increasing";
    val preserves_id_subset_stable = thm "preserves_id_subset_stable";
    val safety_prop_preserves = thm "safety_prop_preserves";
    val stable_localTo_stable2 = thm "stable_localTo_stable2";
    val Increasing_preserves_Stable = thm "Increasing_preserves_Stable";
    val component_of_imp_component = thm "component_of_imp_component";
    val component_of_refl = thm "component_of_refl";
    val component_of_SKIP = thm "component_of_SKIP";
    val component_of_trans = thm "component_of_trans";
    val strict_component_of_eq = thm "strict_component_of_eq";
    val localize_Init_eq = thm "localize_Init_eq";
    val localize_Acts_eq = thm "localize_Acts_eq";
    val localize_AllowedActs_eq = thm "localize_AllowedActs_eq";

    (*Guar*)
    val guar_def = thm "guar_def";
    val OK_insert_iff = thm "OK_insert_iff";
    val ex1 = thm "ex1";
    val ex2 = thm "ex2";
    val ex_prop_finite = thm "ex_prop_finite";
    val ex_prop_equiv = thm "ex_prop_equiv";
    val uv1 = thm "uv1";
    val uv2 = thm "uv2";
    val uv_prop_finite = thm "uv_prop_finite";
    val guaranteesI = thm "guaranteesI";
    val guaranteesD = thm "guaranteesD";
    val component_guaranteesD = thm "component_guaranteesD";
    val guarantees_weaken = thm "guarantees_weaken";
    val subset_imp_guarantees_UNIV = thm "subset_imp_guarantees_UNIV";
    val subset_imp_guarantees = thm "subset_imp_guarantees";
    val ex_prop_imp = thm "ex_prop_imp";
    val guarantees_imp = thm "guarantees_imp";
    val ex_prop_equiv2 = thm "ex_prop_equiv2";
    val guarantees_UN_left = thm "guarantees_UN_left";
    val guarantees_Un_left = thm "guarantees_Un_left";
    val guarantees_INT_right = thm "guarantees_INT_right";
    val guarantees_Int_right = thm "guarantees_Int_right";
    val guarantees_Int_right_I = thm "guarantees_Int_right_I";
    val guarantees_INT_right_iff = thm "guarantees_INT_right_iff";
    val shunting = thm "shunting";
    val contrapositive = thm "contrapositive";
    val combining1 = thm "combining1";
    val combining2 = thm "combining2";
    val all_guarantees = thm "all_guarantees";
    val ex_guarantees = thm "ex_guarantees";
    val guarantees_Join_Int = thm "guarantees_Join_Int";
    val guarantees_Join_Un = thm "guarantees_Join_Un";
    val guarantees_JN_INT = thm "guarantees_JN_INT";
    val guarantees_JN_UN = thm "guarantees_JN_UN";
    val guarantees_Join_I1 = thm "guarantees_Join_I1";
    val guarantees_Join_I2 = thm "guarantees_Join_I2";
    val guarantees_JN_I = thm "guarantees_JN_I";
    val Join_welldef_D1 = thm "Join_welldef_D1";
    val Join_welldef_D2 = thm "Join_welldef_D2";
    val refines_refl = thm "refines_refl";
    val ex_refinement_thm = thm "ex_refinement_thm";
    val uv_refinement_thm = thm "uv_refinement_thm";
    val guarantees_equiv = thm "guarantees_equiv";
    val wg_weakest = thm "wg_weakest";
    val wg_guarantees = thm "wg_guarantees";
    val wg_equiv = thm "wg_equiv";
    val component_of_wg = thm "component_of_wg";
    val wg_finite = thm "wg_finite";
    val wg_ex_prop = thm "wg_ex_prop";
    val wx_subset = thm "wx_subset";
    val wx_ex_prop = thm "wx_ex_prop";
    val wx_weakest = thm "wx_weakest";
    val wx'_ex_prop = thm "wx'_ex_prop";
    val wx_equiv = thm "wx_equiv";
    val guarantees_wx_eq = thm "guarantees_wx_eq";
    val stable_guarantees_Always = thm "stable_guarantees_Always";
    val leadsTo_Basis = thm "leadsTo_Basis";
    val constrains_guarantees_leadsTo = thm "constrains_guarantees_leadsTo";

    (*Extend*)
    val Restrict_iff = thm "Restrict_iff";
    val Restrict_UNIV = thm "Restrict_UNIV";
    val Restrict_empty = thm "Restrict_empty";
    val Restrict_Int = thm "Restrict_Int";
    val Restrict_triv = thm "Restrict_triv";
    val Restrict_subset = thm "Restrict_subset";
    val Restrict_eq_mono = thm "Restrict_eq_mono";
    val Restrict_imageI = thm "Restrict_imageI";
    val Domain_Restrict = thm "Domain_Restrict";
    val Image_Restrict = thm "Image_Restrict";
    val insert_Id_image_Acts = thm "insert_Id_image_Acts";
    val good_mapI = thm "good_mapI";
    val good_map_is_surj = thm "good_map_is_surj";
    val fst_inv_equalityI = thm "fst_inv_equalityI";
    val project_set_iff = thm "project_set_iff";
    val extend_set_mono = thm "extend_set_mono";
    val extend_set_empty = thm "extend_set_empty";
    val project_set_Int_subset = thm "project_set_Int_subset";
    val Init_extend = thm "Init_extend";
    val Init_project = thm "Init_project";
    val Acts_project = thm "Acts_project";
    val project_set_UNIV = thm "project_set_UNIV";
    val project_set_Union = thm "project_set_Union";
    val project_act_mono = thm "project_act_mono";
    val project_constrains_project_set = thm "project_constrains_project_set";
    val project_stable_project_set = thm "project_stable_project_set";

    (*Rename*)
    val good_map_bij = thm "good_map_bij";
    val fst_o_inv_eq_inv = thm "fst_o_inv_eq_inv";
    val mem_rename_set_iff = thm "mem_rename_set_iff";
    val extend_set_eq_image = thm "extend_set_eq_image";
    val Init_rename = thm "Init_rename";
    val extend_set_inv = thm "extend_set_inv";
    val bij_extend_act_eq_project_act = thm "bij_extend_act_eq_project_act";
    val bij_extend_act = thm "bij_extend_act";
    val bij_project_act = thm "bij_project_act";
    val bij_inv_project_act_eq = thm "bij_inv_project_act_eq";
    val Acts_project = thm "Acts_project";
    val extend_inv = thm "extend_inv";
    val rename_inv_rename = thm "rename_inv_rename";
    val rename_rename_inv = thm "rename_rename_inv";
    val rename_inv_eq = thm "rename_inv_eq";
    val bij_extend = thm "bij_extend";
    val bij_project = thm "bij_project";
    val inv_project_eq = thm "inv_project_eq";
    val Allowed_rename = thm "Allowed_rename";
    val bij_rename = thm "bij_rename";
    val surj_rename = thm "surj_rename";
    val inj_rename_imp_inj = thm "inj_rename_imp_inj";
    val surj_rename_imp_surj = thm "surj_rename_imp_surj";
    val bij_rename_imp_bij = thm "bij_rename_imp_bij";
    val bij_rename_iff = thm "bij_rename_iff";
    val rename_SKIP = thm "rename_SKIP";
    val rename_Join = thm "rename_Join";
    val rename_JN = thm "rename_JN";
    val rename_constrains = thm "rename_constrains";
    val rename_stable = thm "rename_stable";
    val rename_invariant = thm "rename_invariant";
    val rename_increasing = thm "rename_increasing";
    val reachable_rename_eq = thm "reachable_rename_eq";
    val rename_Constrains = thm "rename_Constrains";
    val rename_Stable = thm "rename_Stable";
    val rename_Always = thm "rename_Always";
    val rename_Increasing = thm "rename_Increasing";
    val rename_transient = thm "rename_transient";
    val rename_ensures = thm "rename_ensures";
    val rename_leadsTo = thm "rename_leadsTo";
    val rename_LeadsTo = thm "rename_LeadsTo";
    val rename_rename_guarantees_eq = thm "rename_rename_guarantees_eq";
    val rename_guarantees_eq_rename_inv = thm "rename_guarantees_eq_rename_inv";
    val rename_preserves = thm "rename_preserves";
    val ok_rename_iff = thm "ok_rename_iff";
    val OK_rename_iff = thm "OK_rename_iff";
    val bij_eq_rename = thm "bij_eq_rename";
    val rename_image_constrains = thm "rename_image_constrains";
    val rename_image_stable = thm "rename_image_stable";
    val rename_image_increasing = thm "rename_image_increasing";
    val rename_image_invariant = thm "rename_image_invariant";
    val rename_image_Constrains = thm "rename_image_Constrains";
    val rename_image_preserves = thm "rename_image_preserves";
    val rename_image_Stable = thm "rename_image_Stable";
    val rename_image_Increasing = thm "rename_image_Increasing";
    val rename_image_Always = thm "rename_image_Always";
    val rename_image_leadsTo = thm "rename_image_leadsTo";
    val rename_image_LeadsTo = thm "rename_image_LeadsTo";

    (*Lift_prog*)
    val sub_def = thm "sub_def";
    val lift_map_def = thm "lift_map_def";
    val drop_map_def = thm "drop_map_def";
    val insert_map_inverse = thm "insert_map_inverse";
    val insert_map_delete_map_eq = thm "insert_map_delete_map_eq";
    val insert_map_inject1 = thm "insert_map_inject1";
    val insert_map_inject2 = thm "insert_map_inject2";
    val insert_map_inject = thm "insert_map_inject";
    val insert_map_inject = thm "insert_map_inject";
    val lift_map_eq_iff = thm "lift_map_eq_iff";
    val drop_map_lift_map_eq = thm "drop_map_lift_map_eq";
    val inj_lift_map = thm "inj_lift_map";
    val lift_map_drop_map_eq = thm "lift_map_drop_map_eq";
    val drop_map_inject = thm "drop_map_inject";
    val surj_lift_map = thm "surj_lift_map";
    val bij_lift_map = thm "bij_lift_map";
    val inv_lift_map_eq = thm "inv_lift_map_eq";
    val inv_drop_map_eq = thm "inv_drop_map_eq";
    val bij_drop_map = thm "bij_drop_map";
    val sub_apply = thm "sub_apply";
    val lift_set_empty = thm "lift_set_empty";
    val lift_set_iff = thm "lift_set_iff";
    val lift_set_iff2 = thm "lift_set_iff2";
    val lift_set_mono = thm "lift_set_mono";
    val lift_set_Un_distrib = thm "lift_set_Un_distrib";
    val lift_set_Diff_distrib = thm "lift_set_Diff_distrib";
    val bij_lift = thm "bij_lift";
    val lift_SKIP = thm "lift_SKIP";
    val lift_Join = thm "lift_Join";
    val lift_JN = thm "lift_JN";
    val lift_constrains = thm "lift_constrains";
    val lift_stable = thm "lift_stable";
    val lift_invariant = thm "lift_invariant";
    val lift_Constrains = thm "lift_Constrains";
    val lift_Stable = thm "lift_Stable";
    val lift_Always = thm "lift_Always";
    val lift_transient = thm "lift_transient";
    val lift_ensures = thm "lift_ensures";
    val lift_leadsTo = thm "lift_leadsTo";
    val lift_LeadsTo = thm "lift_LeadsTo";
    val lift_lift_guarantees_eq = thm "lift_lift_guarantees_eq";
    val lift_guarantees_eq_lift_inv = thm "lift_guarantees_eq_lift_inv";
    val lift_preserves_snd_I = thm "lift_preserves_snd_I";
    val delete_map_eqE = thm "delete_map_eqE";
    val delete_map_eqE = thm "delete_map_eqE";
    val delete_map_neq_apply = thm "delete_map_neq_apply";
    val vimage_o_fst_eq = thm "vimage_o_fst_eq";
    val vimage_sub_eq_lift_set = thm "vimage_sub_eq_lift_set";
    val mem_lift_act_iff = thm "mem_lift_act_iff";
    val preserves_snd_lift_stable = thm "preserves_snd_lift_stable";
    val constrains_imp_lift_constrains = thm "constrains_imp_lift_constrains";
    val lift_map_image_Times = thm "lift_map_image_Times";
    val lift_preserves_eq = thm "lift_preserves_eq";
    val lift_preserves_sub = thm "lift_preserves_sub";
    val o_equiv_assoc = thm "o_equiv_assoc";
    val o_equiv_apply = thm "o_equiv_apply";
    val fst_o_lift_map = thm "fst_o_lift_map";
    val snd_o_lift_map = thm "snd_o_lift_map";
    val extend_act_extend_act = thm "extend_act_extend_act";
    val project_act_project_act = thm "project_act_project_act";
    val project_act_extend_act = thm "project_act_extend_act";
    val act_in_UNION_preserves_fst = thm "act_in_UNION_preserves_fst";
    val UNION_OK_lift_I = thm "UNION_OK_lift_I";
    val OK_lift_I = thm "OK_lift_I";
    val Allowed_lift = thm "Allowed_lift";
    val lift_image_preserves = thm "lift_image_preserves";

    (*PPROD*)
    val Init_PLam = thm "Init_PLam";
    val PLam_empty = thm "PLam_empty";
    val PLam_SKIP = thm "PLam_SKIP";
    val PLam_insert = thm "PLam_insert";
    val PLam_component_iff = thm "PLam_component_iff";
    val component_PLam = thm "component_PLam";
    val PLam_constrains = thm "PLam_constrains";
    val PLam_stable = thm "PLam_stable";
    val PLam_transient = thm "PLam_transient";
    val PLam_ensures = thm "PLam_ensures";
    val PLam_leadsTo_Basis = thm "PLam_leadsTo_Basis";
    val invariant_imp_PLam_invariant = thm "invariant_imp_PLam_invariant";
    val PLam_preserves_fst = thm "PLam_preserves_fst";
    val PLam_preserves_snd = thm "PLam_preserves_snd";
    val guarantees_PLam_I = thm "guarantees_PLam_I";
    val Allowed_PLam = thm "Allowed_PLam";
    val PLam_preserves = thm "PLam_preserves";

    (*Follows*)
    val mono_Always_o = thm "mono_Always_o";
    val mono_LeadsTo_o = thm "mono_LeadsTo_o";
    val Follows_constant = thm "Follows_constant";
    val mono_Follows_o = thm "mono_Follows_o";
    val mono_Follows_apply = thm "mono_Follows_apply";
    val Follows_trans = thm "Follows_trans";
    val Follows_Increasing1 = thm "Follows_Increasing1";
    val Follows_Increasing2 = thm "Follows_Increasing2";
    val Follows_Bounded = thm "Follows_Bounded";
    val Follows_LeadsTo = thm "Follows_LeadsTo";
    val Follows_LeadsTo_pfixLe = thm "Follows_LeadsTo_pfixLe";
    val Follows_LeadsTo_pfixGe = thm "Follows_LeadsTo_pfixGe";
    val Always_Follows1 = thm "Always_Follows1";
    val Always_Follows2 = thm "Always_Follows2";
    val increasing_Un = thm "increasing_Un";
    val Increasing_Un = thm "Increasing_Un";
    val Always_Un = thm "Always_Un";
    val Follows_Un = thm "Follows_Un";
    val increasing_union = thm "increasing_union";
    val Increasing_union = thm "Increasing_union";
    val Always_union = thm "Always_union";
    val Follows_union = thm "Follows_union";
    val Follows_setsum = thm "Follows_setsum";
    val Increasing_imp_Stable_pfixGe = thm "Increasing_imp_Stable_pfixGe";
    val LeadsTo_le_imp_pfixGe = thm "LeadsTo_le_imp_pfixGe";

    (*Lazy unfolding of actions or of sets*)
    fun simp_of_act def = def RS def_act_simp;

    fun simp_of_set def = def RS def_set_simp;

    (*Combines two invariance ASSUMPTIONS into one.  USEFUL??*)
    val Always_Int_tac = dtac Always_Int_I THEN' assume_tac THEN' etac Always_thin

    (*Combines a list of invariance THEOREMS into one.*)
    val Always_Int_rule = foldr1 (fn (th1,th2) => [th1,th2] MRS Always_Int_I)

    (*Proves "co" properties when the program is specified.  Any use of invariants
      (from weak constrains) must have been done already.*)
    fun gen_constrains_tac(cs,ss) i =
       SELECT_GOAL
          (EVERY [REPEAT (Always_Int_tac 1),
                  (*reduce the fancy safety properties to "constrains"*)
    	      REPEAT (etac Always_ConstrainsI 1
    		      ORELSE
    		      resolve_tac [StableI, stableI,
    				   constrains_imp_Constrains] 1),
                  (*for safety, the totalize operator can be ignored*)
    	      simp_tac (HOL_ss addsimps
                             [mk_total_program_def, totalize_constrains_iff]) 1,
    	      rtac constrainsI 1,
    	      full_simp_tac ss 1,
    	      REPEAT (FIRSTGOAL (etac disjE)),
    	      ALLGOALS (clarify_tac cs),
    	      ALLGOALS (asm_lr_simp_tac ss)]) i;

    (*proves "ensures/leadsTo" properties when the program is specified*)
    fun gen_ensures_tac(cs,ss) sact =
        SELECT_GOAL
          (EVERY [REPEAT (Always_Int_tac 1),
    	      etac Always_LeadsTo_Basis 1
    	          ORELSE   (*subgoal may involve LeadsTo, leadsTo or ensures*)
    		  REPEAT (ares_tac [LeadsTo_Basis, leadsTo_Basis,
    				    EnsuresI, ensuresI] 1),
    	      (*now there are two subgoals: co & transient*)
    	      simp_tac (ss addsimps [mk_total_program_def]) 2,
    	      res_inst_tac [("act", sact)] totalize_transientI 2
     	      ORELSE res_inst_tac [("act", sact)] transientI 2,
                     (*simplify the command's domain*)
    	      simp_tac (ss addsimps [Domain_def]) 3,
    	      gen_constrains_tac (cs,ss) 1,
    	      ALLGOALS (clarify_tac cs),
    	      ALLGOALS (asm_lr_simp_tac ss)]);

    fun constrains_tac st = gen_constrains_tac (claset(), simpset()) st;

    fun ensures_tac sact = gen_ensures_tac (claset(), simpset()) sact;

    (*Composition equivalences, from Lift_prog*)

    fun make_o_equivs th =
        [th,
         th RS o_equiv_assoc |> simplify (HOL_ss addsimps [o_assoc]),
         th RS o_equiv_apply |> simplify (HOL_ss addsimps [o_def, sub_def])];

    Addsimps (make_o_equivs fst_o_funPair @ make_o_equivs snd_o_funPair);

    Addsimps (make_o_equivs fst_o_lift_map @ make_o_equivs snd_o_lift_map);