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gpt-5.4-nano | RAG on

13_rtllm_miscellaneous / task_03 | freq_divbyfrac

benchmarkrtllm
task_idrtllm/13_rtllm_miscellaneous/task_03
samples_total10
final_success_samples9
final_success_rate_samples90.0%
functional_pass_rate_samples100.0%
synth_pass_rate_samples90.0%
source_runsrun_20260426_070416_680227_376b99

Что показывает эта страница

Здесь перечислены все реальные попытки этой модели на одной задаче. По каждой попытке можно увидеть, до какой стадии она дошла, где именно сломалась и какое сообщение об ошибке вернулось из syntax, functional или synthesis.

Samples

sample run extract_ok syntax_ok functional_ok openlane_ok final_success failure_stage failure_reason details
sample_1 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_1
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Implement half-integer division using double-edge technique and phase shifting.
    localparam integer MUL2_DIV_CLK = 7; // total input cycles per output period

    // Intermediate clocks generated on opposite edges (double-edge technique)
    reg clk_p; // "positive-edge" phase
    reg clk_n; // "negative-edge" phase

    // Counter for uneven cycle distribution: 4 and 3 source cycles
    reg [2:0] cnt; // enough for 0..6

    // Generate phase-shifted versions by toggling at half-cycle offsets.
    // We approximate half-cycle phase shift by updating clk_p on posedge
    // and clk_n on negedge, with complementary toggle points.
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            cnt    <= 3'd0;
            clk_p  <= 1'b0;
        end else begin
            // Uneven period split: toggle clk_p after 4 cycles, then after 3 cycles
            // Total = 7 cycles: (4 + 3)
            if (cnt == 3'd3) begin
                clk_p <= ~clk_p; // after 4 posedge samples: cnt=0..3
            end

            if (cnt == (MUL2_DIV_CLK - 1)) begin
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          2: clk=1, clk_div=0 (expected           1)
Failed at          3: clk=0, clk_div=1 (expected           0)
Failed at          4: clk=1, clk_div=1 (expected           0)
Failed at          5: clk=0, clk_div=1 (expected           0)
Failed at          6: clk=1, clk_div=1 (expected           0)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         17: clk=0, clk_div=1 (expected           0)
Failed at         18: clk=1, clk_div=1 (expected           0)
Failed at         19: clk=0, clk_div=1 (expected           0)
=========== Test completed with          14/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_2 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_2
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Use double-edge technique to realize half-integer division.
    localparam integer MUL2_DIV_CLK = 7; // 7 input cycles per output period

    // Uneven half-periods for 3.5x:
    // One half of the output period spans 4 input cycles, the other spans 3 input cycles.
    // We generate two phase-shifted versions (advanced/delayed by half input cycle)
    // and OR them to smooth the fractional output.
    //
    // Implementation approach:
    // - Create two internal toggles on opposite edges of clk (p and n domains).
    // - Use a 3-bit modulo-7 counter to schedule the toggles.
    // - Derive clk_p and clk_n as registered pulses that are OR-ed.
    //
    // Note: This is synthesizable and uses only edge-triggered always blocks.

    reg [2:0] cnt;          // modulo-7 counter (0..6)
    reg       clk_p;        // intermediate clock (phase A)
    reg       clk_n;        // intermediate clock (phase B)

    // Schedule points for toggling within the 7-cycle period.
    // For a 3.5x division, output should have transitions separated by 3 and 4 cycles.
    // We toggle clk_p on posedge domain at cnt==0 and cnt==4 (4-cycle spacing).
    // We toggle clk_n on negedge domain at cnt==0 and cnt==3 (3-cycle spacing).
    //
    // The OR of these two phase-shifted toggles yields a uniform output period.
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          3: clk=0, clk_div=1 (expected           0)
Failed at          4: clk=1, clk_div=1 (expected           0)
Failed at          5: clk=0, clk_div=1 (expected           0)
Failed at          6: clk=1, clk_div=1 (expected           0)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         14: clk=1, clk_div=0 (expected           1)
Failed at         15: clk=0, clk_div=0 (expected           1)
Failed at         17: clk=0, clk_div=1 (expected           0)
Failed at         18: clk=1, clk_div=1 (expected           0)
Failed at         19: clk=0, clk_div=1 (expected           0)
=========== Test completed with          15/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_3 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_3
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Uneven half-integer technique:
    // - Generate two intermediate clocks using uneven cycle counts (4 and 3)
    // - Phase-shift one by +0.5 input cycle and the other by -0.5 input cycle
    // - OR them to form a uniform output period
    //
    // Implementation uses both clock edges to realize the half-cycle phase shift.

    localparam integer MUL2_DIV_CLK = 7; // total input cycles per output period

    reg [2:0] cnt_p; // counts on posedge
    reg [2:0] cnt_n; // counts on negedge

    reg clk_p;       // intermediate clock (posedge domain)
    reg clk_n;       // intermediate clock (negedge domain)

    // Phase-shifted versions (implemented by toggling at half-cycle boundaries)
    reg clk_p_shift;
    reg clk_n_shift;

    // Combinational OR to form final output
    always @(*) begin
        clk_div = clk_p_shift | clk_n_shift;
    end

    // Posedge domain: create uneven timing (4 cycles high, 3 cycles low) over 7-cycle period
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          2: clk=1, clk_div=0 (expected           1)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         17: clk=0, clk_div=1 (expected           0)
Failed at         18: clk=1, clk_div=1 (expected           0)
Failed at         19: clk=0, clk_div=1 (expected           0)
=========== Test completed with          10/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_4 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_4
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Uneven half-integer technique:
    //   - One intermediate clock uses 4-cycle and 3-cycle segments
    //   - The other is phase-shifted by half a source clock
    localparam integer MUL2_DIV_CLK = 7;

    reg [2:0] cnt_p;   // counts 0..6 on posedge
    reg [2:0] cnt_n;   // counts 0..6 on negedge

    reg clk_p;         // intermediate clock (posedge domain)
    reg clk_n;         // intermediate clock (negedge domain)

    // Phase-shifted versions (implemented by toggling at the opposite-edge timing)
    reg clk_p_del;     // posedge-domain, delayed by ~half cycle
    reg clk_n_adv;     // negedge-domain, advanced by ~half cycle

    // Generate intermediate clocks with uneven periods:
    // For a 7-cycle output period, the half-cycle toggles occur at:
    //   - posedge: when cnt_p == 3 -> toggle clk_p
    //   - negedge: when cnt_n == 3 -> toggle clk_n
    // This yields a 4/3 split across successive half-cycles.
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            cnt_p      <= 3'd0;
            clk_p      <= 1'b0;
            clk_p_del  <= 1'b0;
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          2: clk=1, clk_div=0 (expected           1)
Failed at          7: clk=0, clk_div=0 (expected           1)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         17: clk=0, clk_div=1 (expected           0)
Failed at         18: clk=1, clk_div=1 (expected           0)
Failed at         19: clk=0, clk_div=1 (expected           0)
=========== Test completed with          11/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_5 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_5
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Use double-edge technique to realize half-integer division.
    localparam integer MUL2_DIV_CLK = 7; // 7 input cycles per full output period

    // Intermediate phase-shifted clocks (generated from posedge/negedge domains)
    reg clk_p; // "positive-edge" derived intermediate
    reg clk_n; // "negative-edge" derived intermediate

    // Counter for 0..6 (7-cycle pattern)
    reg [2:0] cnt_p; // posedge counter
    reg [2:0] cnt_n; // negedge counter

    // For 3.5x: uneven half-cycles are 4 and 3 input cycles.
    // We toggle intermediate signals at specific counts to create the 4/3 pattern.
    // Then we OR the two phase-shifted versions to smooth the output.
    //
    // clk_p toggles when cnt_p reaches 3 (after 4 posedge events from a boundary)
    // clk_n toggles when cnt_n reaches 2 (after 3 negedge events from a boundary)
    //
    // The OR of clk_p and clk_n yields a uniform 7-cycle output period.
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            cnt_p  <= 3'd0;
            clk_p  <= 1'b0;
        end else begin
            if (cnt_p == (MUL2_DIV_CLK-1)) begin
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          2: clk=1, clk_div=0 (expected           1)
Failed at          6: clk=1, clk_div=1 (expected           0)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         17: clk=0, clk_div=1 (expected           0)
Failed at         18: clk=1, clk_div=1 (expected           0)
Failed at         19: clk=0, clk_div=1 (expected           0)
=========== Test completed with          11/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_6 run_20260426_070416_680227_376b99 ok ok ok failed failed synthesis OpenLane failed: 2
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_6
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Use double-edge technique to realize half-integer division.
    localparam integer MUL2_DIV_CLK = 7; // total input cycles per output period

    // Uneven half-periods for 3.5x:
    // One half of the output period spans 4 input cycles, the other spans 3 input cycles.
    // We generate two phase-shifted versions and OR them.
    reg clk_p; // intermediate clock (positive-edge domain)
    reg clk_n; // intermediate clock (negative-edge domain)

    // Counters for each half-cycle domain
    reg [2:0] cnt_p; // enough for 0..6
    reg [2:0] cnt_n;

    // Control: toggle points within the 7-cycle pattern
    // For a 7-cycle period, we can define transitions at:
    // - after 4 cycles: toggle
    // - after 3 cycles: toggle
    // Starting from 0, this yields a 4/3 duty imbalance that is corrected by OR-ing
    // phase-shifted versions.
    wire [2:0] P_TOGGLE = 3'd4; // toggle after 4 posedge cycles
    wire [2:0] N_TOGGLE = 3'd3; // toggle after 3 negedge cycles

    // Positive-edge domain: build clk_p with a 4/3 pattern over 7 cycles
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          2: clk=1, clk_div=0 (expected           1)
Failed at          7: clk=0, clk_div=0 (expected           1)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         17: clk=0, clk_div=1 (expected           0)
Failed at         18: clk=1, clk_div=1 (expected           0)
Failed at         19: clk=0, clk_div=1 (expected           0)
=========== Test completed with          11/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
OpenLane failed: 2
errors[] 
[
  {
    "stage": "openlane",
    "code": "openlane.failed",
    "message": "OpenLane failed: 2",
    "retryable": false,
    "details": {}
  }
]
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": false,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": false,
  "success": false
}
sample_7 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_7
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Uneven half-integer technique:
    //   - One intermediate clock toggles with a 4/3 cycle pattern
    //   - The other is phase-shifted by half a source clock period
    localparam integer MUL2_DIV_CLK = 7; // total input cycles per full output period

    // Intermediate clocks (generated on both edges to realize half-cycle phase shift)
    reg clk_p; // "positive-edge" phase
    reg clk_n; // "negative-edge" phase

    // State for 4/3 uneven pattern
    // We generate a toggle event every 4 or 3 source cycles, alternating.
    // Total between toggles: 7 cycles => output period 14 half-edges => full period 7 cycles.
    reg [2:0] cnt_p;
    reg [2:0] cnt_n;

    // Next toggle intervals alternate: 4 then 3 then 4 then 3 ...
    // We'll implement by using a phase bit that flips after each toggle.
    reg phase_p;
    reg phase_n;

    // Combinational OR to form final output (registered for clean synthesis)
    always @(*) begin
        clk_div = clk_p | clk_n;
    end
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          2: clk=1, clk_div=0 (expected           1)
Failed at          5: clk=0, clk_div=1 (expected           0)
Failed at          6: clk=1, clk_div=1 (expected           0)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         14: clk=1, clk_div=0 (expected           1)
Failed at         15: clk=0, clk_div=0 (expected           1)
Failed at         16: clk=1, clk_div=0 (expected           1)
Failed at         19: clk=0, clk_div=1 (expected           0)
=========== Test completed with          12/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_8 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_8
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Uneven half-integer technique:
    // - One intermediate clock toggles with 4/3 cycle spacing (total 7)
    // - The other is phase-shifted by half a source clock period
    //
    // We implement two phase-aligned toggles using both edges of clk.
    // clk_p updates on posedge, clk_n updates on negedge.
    // Final output is OR of the two, yielding a uniform 7-cycle period.

    localparam integer MUL2_DIV_CLK = 7; // total source cycles per output period

    reg clk_p;
    reg clk_n;

    // Counters for posedge and negedge domains (each counts source edges)
    reg [2:0] cnt_p; // enough for 0..6
    reg [2:0] cnt_n;

    // Control: toggle points for 3.5 division using uneven cycles
    // For a 7-cycle period, the half-period boundaries occur after 4 and 3 cycles.
    // We toggle clk_p when cnt_p reaches 3 (meaning 4 cycles elapsed from last toggle),
    // and toggle clk_n when cnt_n reaches 3 as well, but because it runs on opposite edge,
    // the resulting OR produces the half-cycle phase shift.
    //
    // This yields an effective half-integer division with duty-cycle smoothing.
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          2: clk=1, clk_div=0 (expected           1)
Failed at          6: clk=1, clk_div=1 (expected           0)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         15: clk=0, clk_div=0 (expected           1)
Failed at         16: clk=1, clk_div=0 (expected           1)
=========== Test completed with          10/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_9 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_9
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Using double-edge technique to realize half-integer division.
    localparam integer MUL2_DIV_CLK = 7; // total input cycles per output period

    // Uneven half-periods for 3.5x:
    // One half uses 4 input cycles, the other uses 3 input cycles.
    localparam integer HALF_A = 4;
    localparam integer HALF_B = 3;

    // Positive-edge and negative-edge phase generators
    reg [2:0] cnt_p;
    reg [2:0] cnt_n;

    reg clk_p;
    reg clk_n;

    // Phase-shifted versions (half input-cycle shift)
    reg clk_p_d; // delayed by half cycle relative to clk_p
    reg clk_n_a; // advanced by half cycle relative to clk_n

    // Generate clk_p on posedge: toggle at end of HALF_A and HALF_B sequence
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            cnt_p   <= 3'd0;
            clk_p   <= 1'b0;
            clk_p_d <= 1'b0;
...
functional details 
[stdout]
Failed at          0: clk=1, clk_div=0 (expected           1)
Failed at          1: clk=0, clk_div=0 (expected           1)
Failed at          2: clk=1, clk_div=0 (expected           1)
Failed at          7: clk=0, clk_div=0 (expected           1)
Failed at          8: clk=1, clk_div=0 (expected           1)
Failed at          9: clk=0, clk_div=0 (expected           1)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         16: clk=1, clk_div=0 (expected           1)
=========== Test completed with          11/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}
sample_10 run_20260426_070416_680227_376b99 ok ok ok ok ok success Full pipeline success
Open details
sample_dir: E:\Work\MIEM\VKR\Analyse\data\model_dataset\models\gpt-5-4-nano\rag_on\benchmarks\rtllm\tasks\rtllm__13_rtllm_miscellaneous__task_03\samples\run_20260426_070416_680227_376b99__sample_10
generated.v preview 
module freq_divbyfrac (
    input  wire clk,
    input  wire rst_n,
    output reg  clk_div
);

    // Fractional division target: 3.5x (i.e., output period = 7 input cycles)
    // Uneven half-integer technique:
    //   - One intermediate clock toggles with 4/3 cycle pattern
    //   - The other is phase-shifted by half a source clock period
    //
    // We implement two edge-aligned toggles using both clock edges to realize
    // half-integer phase shift and then OR them to form a uniform-period output.

    localparam integer MUL2_DIV_CLK = 7; // total input cycles per output period

    // Positive-edge domain
    reg [2:0] cnt_p;   // enough for 0..6
    reg       clk_p;   // intermediate clock (positive-edge controlled)

    // Negative-edge domain
    reg [2:0] cnt_n;
    reg       clk_n;   // intermediate clock (negative-edge controlled)

    // Synchronize OR inputs (clk_p and clk_n are generated on opposite edges).
    // Since both are derived from the same source clock, we can OR them directly.
    // Registering clk_div on posedge keeps it synthesizable and stable.
    always @(posedge clk or negedge rst_n) begin
        if (!rst_n) begin
            clk_div <= 1'b0;
        end else begin
            clk_div <= clk_p | clk_n;
...
functional details 
[stdout]
Failed at          3: clk=0, clk_div=1 (expected           0)
Failed at          4: clk=1, clk_div=1 (expected           0)
Failed at          5: clk=0, clk_div=1 (expected           0)
Failed at          7: clk=0, clk_div=0 (expected           1)
Failed at         10: clk=1, clk_div=1 (expected           0)
Failed at         11: clk=0, clk_div=1 (expected           0)
Failed at         12: clk=1, clk_div=1 (expected           0)
Failed at         13: clk=0, clk_div=1 (expected           0)
Failed at         17: clk=0, clk_div=1 (expected           0)
=========== Test completed with           9/20 failures ===========
/workspace/banchmarks/rtllm/13_rtllm_miscellaneous/task_03/tb.v:27: $finish called at 130000 (1ps)
synthesis details 
[error]
None
outcome 
{
  "llm_ok": true,
  "extract_ok": true,
  "syntax_ok": true,
  "functional_ok": true,
  "openlane_ok": true,
  "syntax_required": true,
  "functional_required": true,
  "openlane_required": true,
  "final_success": true,
  "success": true
}