Module Definition
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Module : prim_fifo_sync
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.75 100.00 75.00 100.00 100.00

Source File(s) :
/workspaces/repo/scratch/os_regression_2024_10_14/uart-sim-vcs/default/sim-vcs/../src/lowrisc_prim_fifo_0/rtl/prim_fifo_sync.sv

Module self-instances :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
tb.dut.uart_core.u_uart_txfifo 93.75 100.00 75.00 100.00 100.00
tb.dut.uart_core.u_uart_rxfifo 93.75 100.00 75.00 100.00 100.00


Module Instance : tb.dut.uart_core.u_uart_txfifo

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.75 100.00 75.00 100.00 100.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
97.22 100.00 88.89 100.00 100.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
98.98 98.94 99.04 97.96 100.00 uart_core


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
gen_normal_fifo.u_fifo_cnt 100.00 100.00 100.00 100.00


Module Instance : tb.dut.uart_core.u_uart_rxfifo

Instance :
SCORELINECONDTOGGLEFSMBRANCHASSERT
93.75 100.00 75.00 100.00 100.00


Instance's subtree :
SCORELINECONDTOGGLEFSMBRANCHASSERT
97.22 100.00 88.89 100.00 100.00


Parent :
SCORELINECONDTOGGLEFSMBRANCHASSERTNAME
98.98 98.94 99.04 97.96 100.00 uart_core


Subtrees :
NAMESCORELINECONDTOGGLEFSMBRANCHASSERT
gen_normal_fifo.u_fifo_cnt 100.00 100.00 100.00 100.00

Line Coverage for Module : prim_fifo_sync
Line No.TotalCoveredPercent
TOTAL1414100.00
ALWAYS6944100.00
CONT_ASSIGN8111100.00
CONT_ASSIGN8211100.00
CONT_ASSIGN10011100.00
CONT_ASSIGN10111100.00
CONT_ASSIGN12011100.00
ALWAYS12322100.00
CONT_ASSIGN13311100.00
CONT_ASSIGN13411100.00
CONT_ASSIGN13811100.00


68                          always_ff @(posedge clk_i or negedge rst_ni) begin
69         1/1                if (!rst_ni) begin
           Tests:       T1 T2 T3 
70         1/1                  under_rst <= 1'b1;
           Tests:       T1 T2 T3 
71         1/1                end else if (under_rst) begin
           Tests:       T1 T2 T3 
72         1/1                  under_rst <= ~under_rst;
           Tests:       T1 T2 T3 
73                            end
                        MISSING_ELSE
74                          end
75                      
76                          logic empty;
77                      
78                          // full and not ready for write are two different concepts.
79                          // The latter can be '0' when under reset, while the former is an indication that no more
80                          // entries can be written.
81         1/1              assign wready_o = ~full_o & ~under_rst;
           Tests:       T1 T2 T3 
82         1/1              assign rvalid_o = ~empty & ~under_rst;
           Tests:       T1 T2 T3 
83                      
84                          prim_fifo_sync_cnt #(
85                            .Depth(Depth),
86                            .Secure(Secure)
87                          ) u_fifo_cnt (
88                            .clk_i,
89                            .rst_ni,
90                            .clr_i,
91                            .incr_wptr_i(fifo_incr_wptr),
92                            .incr_rptr_i(fifo_incr_rptr),
93                            .wptr_o(fifo_wptr),
94                            .rptr_o(fifo_rptr),
95                            .full_o,
96                            .empty_o(fifo_empty),
97                            .depth_o,
98                            .err_o
99                          );
100        1/1              assign fifo_incr_wptr = wvalid_i & wready_o & ~under_rst;
           Tests:       T1 T2 T3 
101        1/1              assign fifo_incr_rptr = rvalid_o & rready_i & ~under_rst;
           Tests:       T1 T2 T3 
102                     
103                         // the generate blocks below are needed to avoid lint errors due to array indexing
104                         // in the where the fifo only has one storage element
105                         logic [Depth-1:0][Width-1:0] storage;
106                         logic [Width-1:0] storage_rdata;
107                         if (Depth == 1) begin : gen_depth_eq1
108                           assign storage_rdata = storage[0];
109                     
110                           always_ff @(posedge clk_i)
111                             if (fifo_incr_wptr) begin
112                               storage[0] <= wdata_i;
113                             end
114                     
115                           logic unused_ptrs;
116                           assign unused_ptrs = ^{fifo_wptr, fifo_rptr};
117                     
118                         // fifo with more than one storage element
119                         end else begin : gen_depth_gt1
120        1/1                assign storage_rdata = storage[fifo_rptr];
           Tests:       T1 T2 T3 
121                     
122                           always_ff @(posedge clk_i)
123        1/1                  if (fifo_incr_wptr) begin
           Tests:       T1 T2 T3 
124        1/1                    storage[fifo_wptr] <= wdata_i;
           Tests:       T1 T2 T4 
125                             end
                        MISSING_ELSE
126                         end
127                     
128                         logic [Width-1:0] rdata_int;
129                         if (Pass == 1'b1) begin : gen_pass
130                           assign rdata_int = (fifo_empty && wvalid_i) ? wdata_i : storage_rdata;
131                           assign empty = fifo_empty & ~wvalid_i;
132                         end else begin : gen_nopass
133        1/1                assign rdata_int = storage_rdata;
           Tests:       T1 T2 T4 
134        1/1                assign empty = fifo_empty;
           Tests:       T1 T2 T3 
135                         end
136                     
137                         if (OutputZeroIfEmpty == 1'b1) begin : gen_output_zero
138        1/1                assign rdata_o = empty ? Width'(0) : rdata_int;
           Tests:       T1 T2 T3 
Cond Coverage for Module : prim_fifo_sync
TotalCoveredPercent
Conditions161275.00
Logical161275.00
Non-Logical00
Event00

 LINE       81
 EXPRESSION (((~full_o)) & ((~gen_normal_fifo.under_rst)))
             -----1-----   ---------------2--------------
-1--2-StatusTests
01CoveredT7,T11,T12
10CoveredT1,T2,T3
11CoveredT1,T2,T3 

 LINE       82
 EXPRESSION (((~gen_normal_fifo.empty)) & ((~gen_normal_fifo.under_rst)))
             -------------1------------   ---------------2--------------
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T4 

 LINE       100
 EXPRESSION (wvalid_i & wready_o & ((~gen_normal_fifo.under_rst)))
             ----1---   ----2---   ---------------3--------------
-1--2--3-StatusTests
011CoveredT1,T2,T3
101CoveredT7,T11,T12
110Not Covered
111CoveredT1,T2,T4 

 LINE       101
 EXPRESSION (rvalid_o & rready_i & ((~gen_normal_fifo.under_rst)))
             ----1---   ----2---   ---------------3--------------
-1--2--3-StatusTests
011Not Covered
101CoveredT1,T2,T4
110Not Covered
111CoveredT1,T2,T4 

 LINE       138
 EXPRESSION (gen_normal_fifo.empty ? (8'(0)) : gen_normal_fifo.rdata_int)
             ----------1----------
-1-StatusTests
0CoveredT1,T2,T4
1CoveredT1,T2,T3
Branch Coverage for Module : prim_fifo_sync
Line No.TotalCoveredPercent
Branches 7 7 100.00
TERNARY 138 2 2 100.00
IF 69 3 3 100.00
IF 123 2 2 100.00 



138              assign rdata_o = empty ? Width'(0) : rdata_int;
                                        -1-  
                                        ==>  
                                        ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T1,T2,T4 



69               if (!rst_ni) begin
                 -1-  
70                 under_rst <= 1'b1;
                   ==>
71               end else if (under_rst) begin
                          -2-  
72                 under_rst <= ~under_rst;
                   ==>
73               end
                 MISSING_ELSE
                 ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T1,T2,T3
0 0 Covered T1,T2,T3 



123                if (fifo_incr_wptr) begin
                   -1-     
124                  storage[fifo_wptr] <= wdata_i;
                     ==>
125                end
                   MISSING_ELSE
                   ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T4
0 Covered T1,T2,T3

Assert Coverage for Module : prim_fifo_sync
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 6 6 100.00 6 100.00
Cover properties 0 0 0
Cover sequences 0 0 0
Total 6 6 100.00 6 100.00



Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
DataKnown_A 2147483647 2147483647 0 0
DataKnown_AKnownEnable 2147483647 2147483647 0 0
DepthKnown_A 2147483647 2147483647 0 0
RvalidKnown_A 2147483647 2147483647 0 0
WreadyKnown_A 2147483647 2147483647 0 0
gen_normal_fifo.depthShallNotExceedParamDepth 2147483647 2147483647 0 0


DataKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 85466 1984 0 0
T2 398862 128 0 0
T3 11678 0 0 0
T4 375372 6856 0 0
T5 2382 0 0 0
T6 52268 1727 0 0
T7 245452 997031 0 0
T8 1401132 699931 0 0
T9 748162 176393 0 0
T10 400612 239117 0 0
T11 0 802400 0 0
T13 0 67635 0 0
T14 0 13271 0 0
T15 0 776 0 0

DataKnown_AKnownEnable
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 85466 85310 0 0
T2 398862 398752 0 0
T3 11678 8594 0 0
T4 375372 375200 0 0
T5 2382 2188 0 0
T6 52268 52078 0 0
T7 245452 245438 0 0
T8 1401132 1400944 0 0
T9 748162 748040 0 0
T10 400612 400596 0 0

DepthKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 85466 85310 0 0
T2 398862 398752 0 0
T3 11678 8594 0 0
T4 375372 375200 0 0
T5 2382 2188 0 0
T6 52268 52078 0 0
T7 245452 245438 0 0
T8 1401132 1400944 0 0
T9 748162 748040 0 0
T10 400612 400596 0 0

RvalidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 85466 85310 0 0
T2 398862 398752 0 0
T3 11678 8594 0 0
T4 375372 375200 0 0
T5 2382 2188 0 0
T6 52268 52078 0 0
T7 245452 245438 0 0
T8 1401132 1400944 0 0
T9 748162 748040 0 0
T10 400612 400596 0 0

WreadyKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 85466 85310 0 0
T2 398862 398752 0 0
T3 11678 8594 0 0
T4 375372 375200 0 0
T5 2382 2188 0 0
T6 52268 52078 0 0
T7 245452 245438 0 0
T8 1401132 1400944 0 0
T9 748162 748040 0 0
T10 400612 400596 0 0

gen_normal_fifo.depthShallNotExceedParamDepth
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 85466 1984 0 0
T2 398862 128 0 0
T3 11678 0 0 0
T4 375372 6856 0 0
T5 2382 0 0 0
T6 52268 1727 0 0
T7 245452 997031 0 0
T8 1401132 699931 0 0
T9 748162 176393 0 0
T10 400612 239117 0 0
T11 0 802400 0 0
T13 0 67635 0 0
T14 0 13271 0 0
T15 0 776 0 0

Line Coverage for Instance : tb.dut.uart_core.u_uart_txfifo
Line No.TotalCoveredPercent
TOTAL1414100.00
ALWAYS6944100.00
CONT_ASSIGN8111100.00
CONT_ASSIGN8211100.00
CONT_ASSIGN10011100.00
CONT_ASSIGN10111100.00
CONT_ASSIGN12011100.00
ALWAYS12322100.00
CONT_ASSIGN13311100.00
CONT_ASSIGN13411100.00
CONT_ASSIGN13811100.00


68                          always_ff @(posedge clk_i or negedge rst_ni) begin
69         1/1                if (!rst_ni) begin
           Tests:       T1 T2 T3 
70         1/1                  under_rst <= 1'b1;
           Tests:       T1 T2 T3 
71         1/1                end else if (under_rst) begin
           Tests:       T1 T2 T3 
72         1/1                  under_rst <= ~under_rst;
           Tests:       T1 T2 T3 
73                            end
                        MISSING_ELSE
74                          end
75                      
76                          logic empty;
77                      
78                          // full and not ready for write are two different concepts.
79                          // The latter can be '0' when under reset, while the former is an indication that no more
80                          // entries can be written.
81         1/1              assign wready_o = ~full_o & ~under_rst;
           Tests:       T1 T2 T3 
82         1/1              assign rvalid_o = ~empty & ~under_rst;
           Tests:       T1 T2 T3 
83                      
84                          prim_fifo_sync_cnt #(
85                            .Depth(Depth),
86                            .Secure(Secure)
87                          ) u_fifo_cnt (
88                            .clk_i,
89                            .rst_ni,
90                            .clr_i,
91                            .incr_wptr_i(fifo_incr_wptr),
92                            .incr_rptr_i(fifo_incr_rptr),
93                            .wptr_o(fifo_wptr),
94                            .rptr_o(fifo_rptr),
95                            .full_o,
96                            .empty_o(fifo_empty),
97                            .depth_o,
98                            .err_o
99                          );
100        1/1              assign fifo_incr_wptr = wvalid_i & wready_o & ~under_rst;
           Tests:       T1 T2 T3 
101        1/1              assign fifo_incr_rptr = rvalid_o & rready_i & ~under_rst;
           Tests:       T1 T2 T3 
102                     
103                         // the generate blocks below are needed to avoid lint errors due to array indexing
104                         // in the where the fifo only has one storage element
105                         logic [Depth-1:0][Width-1:0] storage;
106                         logic [Width-1:0] storage_rdata;
107                         if (Depth == 1) begin : gen_depth_eq1
108                           assign storage_rdata = storage[0];
109                     
110                           always_ff @(posedge clk_i)
111                             if (fifo_incr_wptr) begin
112                               storage[0] <= wdata_i;
113                             end
114                     
115                           logic unused_ptrs;
116                           assign unused_ptrs = ^{fifo_wptr, fifo_rptr};
117                     
118                         // fifo with more than one storage element
119                         end else begin : gen_depth_gt1
120        1/1                assign storage_rdata = storage[fifo_rptr];
           Tests:       T1 T2 T3 
121                     
122                           always_ff @(posedge clk_i)
123        1/1                  if (fifo_incr_wptr) begin
           Tests:       T1 T2 T3 
124        1/1                    storage[fifo_wptr] <= wdata_i;
           Tests:       T1 T2 T4 
125                             end
                        MISSING_ELSE
126                         end
127                     
128                         logic [Width-1:0] rdata_int;
129                         if (Pass == 1'b1) begin : gen_pass
130                           assign rdata_int = (fifo_empty && wvalid_i) ? wdata_i : storage_rdata;
131                           assign empty = fifo_empty & ~wvalid_i;
132                         end else begin : gen_nopass
133        1/1                assign rdata_int = storage_rdata;
           Tests:       T1 T2 T4 
134        1/1                assign empty = fifo_empty;
           Tests:       T1 T2 T3 
135                         end
136                     
137                         if (OutputZeroIfEmpty == 1'b1) begin : gen_output_zero
138        1/1                assign rdata_o = empty ? Width'(0) : rdata_int;
           Tests:       T1 T2 T3 
Cond Coverage for Instance : tb.dut.uart_core.u_uart_txfifo
TotalCoveredPercent
Conditions161275.00
Logical161275.00
Non-Logical00
Event00

 LINE       81
 EXPRESSION (((~full_o)) & ((~gen_normal_fifo.under_rst)))
             -----1-----   ---------------2--------------
-1--2-StatusTests
01CoveredT7,T11,T12
10CoveredT1,T2,T3
11CoveredT1,T2,T3 

 LINE       82
 EXPRESSION (((~gen_normal_fifo.empty)) & ((~gen_normal_fifo.under_rst)))
             -------------1------------   ---------------2--------------
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T4 

 LINE       100
 EXPRESSION (wvalid_i & wready_o & ((~gen_normal_fifo.under_rst)))
             ----1---   ----2---   ---------------3--------------
-1--2--3-StatusTests
011CoveredT1,T2,T3
101CoveredT7,T11,T12
110Not Covered
111CoveredT1,T2,T4 

 LINE       101
 EXPRESSION (rvalid_o & rready_i & ((~gen_normal_fifo.under_rst)))
             ----1---   ----2---   ---------------3--------------
-1--2--3-StatusTests
011Not Covered
101CoveredT7,T8,T10
110Not Covered
111CoveredT1,T2,T4 

 LINE       138
 EXPRESSION (gen_normal_fifo.empty ? (8'(0)) : gen_normal_fifo.rdata_int)
             ----------1----------
-1-StatusTests
0CoveredT1,T2,T4
1CoveredT1,T2,T3
Branch Coverage for Instance : tb.dut.uart_core.u_uart_txfifo
Line No.TotalCoveredPercent
Branches 7 7 100.00
TERNARY 138 2 2 100.00
IF 69 3 3 100.00
IF 123 2 2 100.00 



138              assign rdata_o = empty ? Width'(0) : rdata_int;
                                        -1-  
                                        ==>  
                                        ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T1,T2,T4 



69               if (!rst_ni) begin
                 -1-  
70                 under_rst <= 1'b1;
                   ==>
71               end else if (under_rst) begin
                          -2-  
72                 under_rst <= ~under_rst;
                   ==>
73               end
                 MISSING_ELSE
                 ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T1,T2,T3
0 0 Covered T1,T2,T3 



123                if (fifo_incr_wptr) begin
                   -1-     
124                  storage[fifo_wptr] <= wdata_i;
                     ==>
125                end
                   MISSING_ELSE
                   ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T4
0 Covered T1,T2,T3

Assert Coverage for Instance : tb.dut.uart_core.u_uart_txfifo
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 6 6 100.00 6 100.00
Cover properties 0 0 0
Cover sequences 0 0 0
Total 6 6 100.00 6 100.00



Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
DataKnown_A 2147483647 1747559079 0 0
DataKnown_AKnownEnable 2147483647 2147483647 0 0
DepthKnown_A 2147483647 2147483647 0 0
RvalidKnown_A 2147483647 2147483647 0 0
WreadyKnown_A 2147483647 2147483647 0 0
gen_normal_fifo.depthShallNotExceedParamDepth 2147483647 1747559079 0 0


DataKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 1747559079 0 0
T1 42733 10 0 0
T2 199431 11 0 0
T3 5839 0 0 0
T4 187686 10 0 0
T5 1191 0 0 0
T6 26134 10 0 0
T7 122726 808505 0 0
T8 700566 699931 0 0
T9 374081 0 0 0
T10 200306 224281 0 0
T11 0 802400 0 0
T14 0 12418 0 0
T15 0 10 0 0

DataKnown_AKnownEnable
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 42733 42655 0 0
T2 199431 199376 0 0
T3 5839 4297 0 0
T4 187686 187600 0 0
T5 1191 1094 0 0
T6 26134 26039 0 0
T7 122726 122719 0 0
T8 700566 700472 0 0
T9 374081 374020 0 0
T10 200306 200298 0 0

DepthKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 42733 42655 0 0
T2 199431 199376 0 0
T3 5839 4297 0 0
T4 187686 187600 0 0
T5 1191 1094 0 0
T6 26134 26039 0 0
T7 122726 122719 0 0
T8 700566 700472 0 0
T9 374081 374020 0 0
T10 200306 200298 0 0

RvalidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 42733 42655 0 0
T2 199431 199376 0 0
T3 5839 4297 0 0
T4 187686 187600 0 0
T5 1191 1094 0 0
T6 26134 26039 0 0
T7 122726 122719 0 0
T8 700566 700472 0 0
T9 374081 374020 0 0
T10 200306 200298 0 0

WreadyKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 42733 42655 0 0
T2 199431 199376 0 0
T3 5839 4297 0 0
T4 187686 187600 0 0
T5 1191 1094 0 0
T6 26134 26039 0 0
T7 122726 122719 0 0
T8 700566 700472 0 0
T9 374081 374020 0 0
T10 200306 200298 0 0

gen_normal_fifo.depthShallNotExceedParamDepth
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 1747559079 0 0
T1 42733 10 0 0
T2 199431 11 0 0
T3 5839 0 0 0
T4 187686 10 0 0
T5 1191 0 0 0
T6 26134 10 0 0
T7 122726 808505 0 0
T8 700566 699931 0 0
T9 374081 0 0 0
T10 200306 224281 0 0
T11 0 802400 0 0
T14 0 12418 0 0
T15 0 10 0 0

Line Coverage for Instance : tb.dut.uart_core.u_uart_rxfifo
Line No.TotalCoveredPercent
TOTAL1414100.00
ALWAYS6944100.00
CONT_ASSIGN8111100.00
CONT_ASSIGN8211100.00
CONT_ASSIGN10011100.00
CONT_ASSIGN10111100.00
CONT_ASSIGN12011100.00
ALWAYS12322100.00
CONT_ASSIGN13311100.00
CONT_ASSIGN13411100.00
CONT_ASSIGN13811100.00


68                          always_ff @(posedge clk_i or negedge rst_ni) begin
69         1/1                if (!rst_ni) begin
           Tests:       T1 T2 T3 
70         1/1                  under_rst <= 1'b1;
           Tests:       T1 T2 T3 
71         1/1                end else if (under_rst) begin
           Tests:       T1 T2 T3 
72         1/1                  under_rst <= ~under_rst;
           Tests:       T1 T2 T3 
73                            end
                        MISSING_ELSE
74                          end
75                      
76                          logic empty;
77                      
78                          // full and not ready for write are two different concepts.
79                          // The latter can be '0' when under reset, while the former is an indication that no more
80                          // entries can be written.
81         1/1              assign wready_o = ~full_o & ~under_rst;
           Tests:       T1 T2 T3 
82         1/1              assign rvalid_o = ~empty & ~under_rst;
           Tests:       T1 T2 T3 
83                      
84                          prim_fifo_sync_cnt #(
85                            .Depth(Depth),
86                            .Secure(Secure)
87                          ) u_fifo_cnt (
88                            .clk_i,
89                            .rst_ni,
90                            .clr_i,
91                            .incr_wptr_i(fifo_incr_wptr),
92                            .incr_rptr_i(fifo_incr_rptr),
93                            .wptr_o(fifo_wptr),
94                            .rptr_o(fifo_rptr),
95                            .full_o,
96                            .empty_o(fifo_empty),
97                            .depth_o,
98                            .err_o
99                          );
100        1/1              assign fifo_incr_wptr = wvalid_i & wready_o & ~under_rst;
           Tests:       T1 T2 T3 
101        1/1              assign fifo_incr_rptr = rvalid_o & rready_i & ~under_rst;
           Tests:       T1 T2 T3 
102                     
103                         // the generate blocks below are needed to avoid lint errors due to array indexing
104                         // in the where the fifo only has one storage element
105                         logic [Depth-1:0][Width-1:0] storage;
106                         logic [Width-1:0] storage_rdata;
107                         if (Depth == 1) begin : gen_depth_eq1
108                           assign storage_rdata = storage[0];
109                     
110                           always_ff @(posedge clk_i)
111                             if (fifo_incr_wptr) begin
112                               storage[0] <= wdata_i;
113                             end
114                     
115                           logic unused_ptrs;
116                           assign unused_ptrs = ^{fifo_wptr, fifo_rptr};
117                     
118                         // fifo with more than one storage element
119                         end else begin : gen_depth_gt1
120        1/1                assign storage_rdata = storage[fifo_rptr];
           Tests:       T1 T2 T3 
121                     
122                           always_ff @(posedge clk_i)
123        1/1                  if (fifo_incr_wptr) begin
           Tests:       T1 T2 T3 
124        1/1                    storage[fifo_wptr] <= wdata_i;
           Tests:       T1 T2 T4 
125                             end
                        MISSING_ELSE
126                         end
127                     
128                         logic [Width-1:0] rdata_int;
129                         if (Pass == 1'b1) begin : gen_pass
130                           assign rdata_int = (fifo_empty && wvalid_i) ? wdata_i : storage_rdata;
131                           assign empty = fifo_empty & ~wvalid_i;
132                         end else begin : gen_nopass
133        1/1                assign rdata_int = storage_rdata;
           Tests:       T1 T2 T4 
134        1/1                assign empty = fifo_empty;
           Tests:       T1 T2 T3 
135                         end
136                     
137                         if (OutputZeroIfEmpty == 1'b1) begin : gen_output_zero
138        1/1                assign rdata_o = empty ? Width'(0) : rdata_int;
           Tests:       T1 T2 T3 
Cond Coverage for Instance : tb.dut.uart_core.u_uart_rxfifo
TotalCoveredPercent
Conditions161275.00
Logical161275.00
Non-Logical00
Event00

 LINE       81
 EXPRESSION (((~full_o)) & ((~gen_normal_fifo.under_rst)))
             -----1-----   ---------------2--------------
-1--2-StatusTests
01CoveredT16,T17,T18
10CoveredT1,T2,T3
11CoveredT1,T2,T3 

 LINE       82
 EXPRESSION (((~gen_normal_fifo.empty)) & ((~gen_normal_fifo.under_rst)))
             -------------1------------   ---------------2--------------
-1--2-StatusTests
01CoveredT1,T2,T3
10Not Covered
11CoveredT1,T2,T4 

 LINE       100
 EXPRESSION (wvalid_i & wready_o & ((~gen_normal_fifo.under_rst)))
             ----1---   ----2---   ---------------3--------------
-1--2--3-StatusTests
011CoveredT1,T2,T3
101CoveredT16,T17,T18
110Not Covered
111CoveredT1,T2,T4 

 LINE       101
 EXPRESSION (rvalid_o & rready_i & ((~gen_normal_fifo.under_rst)))
             ----1---   ----2---   ---------------3--------------
-1--2--3-StatusTests
011Not Covered
101CoveredT1,T2,T4
110Not Covered
111CoveredT1,T2,T4 

 LINE       138
 EXPRESSION (gen_normal_fifo.empty ? (8'(0)) : gen_normal_fifo.rdata_int)
             ----------1----------
-1-StatusTests
0CoveredT1,T2,T4
1CoveredT1,T2,T3
Branch Coverage for Instance : tb.dut.uart_core.u_uart_rxfifo
Line No.TotalCoveredPercent
Branches 7 7 100.00
TERNARY 138 2 2 100.00
IF 69 3 3 100.00
IF 123 2 2 100.00 



138              assign rdata_o = empty ? Width'(0) : rdata_int;
                                        -1-  
                                        ==>  
                                        ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T3
0 Covered T1,T2,T4 



69               if (!rst_ni) begin
                 -1-  
70                 under_rst <= 1'b1;
                   ==>
71               end else if (under_rst) begin
                          -2-  
72                 under_rst <= ~under_rst;
                   ==>
73               end
                 MISSING_ELSE
                 ==>

Branches:
-1--2-StatusTests
1 - Covered T1,T2,T3
0 1 Covered T1,T2,T3
0 0 Covered T1,T2,T3 



123                if (fifo_incr_wptr) begin
                   -1-     
124                  storage[fifo_wptr] <= wdata_i;
                     ==>
125                end
                   MISSING_ELSE
                   ==>

Branches:
-1-StatusTests
1 Covered T1,T2,T4
0 Covered T1,T2,T3

Assert Coverage for Instance : tb.dut.uart_core.u_uart_rxfifo
TotalAttemptedPercentSucceeded/MatchedPercent
Assertions 6 6 100.00 6 100.00
Cover properties 0 0 0
Cover sequences 0 0 0
Total 6 6 100.00 6 100.00



Assertion Details

NameAttemptsReal SuccessesFailuresIncomplete
DataKnown_A 2147483647 566783321 0 0
DataKnown_AKnownEnable 2147483647 2147483647 0 0
DepthKnown_A 2147483647 2147483647 0 0
RvalidKnown_A 2147483647 2147483647 0 0
WreadyKnown_A 2147483647 2147483647 0 0
gen_normal_fifo.depthShallNotExceedParamDepth 2147483647 566783321 0 0


DataKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 566783321 0 0
T1 42733 1974 0 0
T2 199431 117 0 0
T3 5839 0 0 0
T4 187686 6846 0 0
T5 1191 0 0 0
T6 26134 1717 0 0
T7 122726 188526 0 0
T8 700566 0 0 0
T9 374081 176393 0 0
T10 200306 14836 0 0
T13 0 67635 0 0
T14 0 853 0 0
T15 0 766 0 0

DataKnown_AKnownEnable
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 42733 42655 0 0
T2 199431 199376 0 0
T3 5839 4297 0 0
T4 187686 187600 0 0
T5 1191 1094 0 0
T6 26134 26039 0 0
T7 122726 122719 0 0
T8 700566 700472 0 0
T9 374081 374020 0 0
T10 200306 200298 0 0

DepthKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 42733 42655 0 0
T2 199431 199376 0 0
T3 5839 4297 0 0
T4 187686 187600 0 0
T5 1191 1094 0 0
T6 26134 26039 0 0
T7 122726 122719 0 0
T8 700566 700472 0 0
T9 374081 374020 0 0
T10 200306 200298 0 0

RvalidKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 42733 42655 0 0
T2 199431 199376 0 0
T3 5839 4297 0 0
T4 187686 187600 0 0
T5 1191 1094 0 0
T6 26134 26039 0 0
T7 122726 122719 0 0
T8 700566 700472 0 0
T9 374081 374020 0 0
T10 200306 200298 0 0

WreadyKnown_A
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 2147483647 0 0
T1 42733 42655 0 0
T2 199431 199376 0 0
T3 5839 4297 0 0
T4 187686 187600 0 0
T5 1191 1094 0 0
T6 26134 26039 0 0
T7 122726 122719 0 0
T8 700566 700472 0 0
T9 374081 374020 0 0
T10 200306 200298 0 0

gen_normal_fifo.depthShallNotExceedParamDepth
NameAttemptsReal SuccessesFailuresIncomplete
Total 2147483647 566783321 0 0
T1 42733 1974 0 0
T2 199431 117 0 0
T3 5839 0 0 0
T4 187686 6846 0 0
T5 1191 0 0 0
T6 26134 1717 0 0
T7 122726 188526 0 0
T8 700566 0 0 0
T9 374081 176393 0 0
T10 200306 14836 0 0
T13 0 67635 0 0
T14 0 853 0 0
T15 0 766 0 0

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%