{ "page_id": "P06", "tool": "OpenSTA", "version": "3.1.0", "source_commit": "b3e1b3989809e1c70f265a9e7be33438c3ebf8bf", "recorded_at_utc": "2026-10-25T05:07:10.325556+00:00", "os": "macOS 27.0.1", "architecture": "arm64", "inputs_sha256": { "timing_demo.v": "c33e00003603fda70dccbc79d04df0c8bb6c73ba502e9d097ef337208086fa53", "check.tcl": "f300b2763eb7d5be92fe4c3aaa231e002e05170d29f87e552f8d6fb67eb131a5" }, "library": { "commit": "ac7fb61f06e6470b94e8afdf7c25268f62fbd7b1", "files": [ { "file": "LICENSE", "url": "https://raw.githubusercontent.com/google/skywater-pdk-libs-sky130_fd_sc_hd/ac7fb61f06e6470b94e8afdf7c25268f62fbd7b1/LICENSE", "sha256": "cfc7749b96f63bd31c3c42b5c471bf756814053e847c10f3eb003417bc523d30" }, { "file": "sky130_fd_sc_hd__common.lib.json", "url": "https://raw.githubusercontent.com/google/skywater-pdk-libs-sky130_fd_sc_hd/ac7fb61f06e6470b94e8afdf7c25268f62fbd7b1/timing/sky130_fd_sc_hd__common.lib.json", "sha256": "f2e44ee9535bca3badb2748c12f7bf90c0cd1a67d01e5ed7659e43d964a791de" }, { "file": "sky130_fd_sc_hd__tt_025C_1v80.lib.json", "url": "https://raw.githubusercontent.com/google/skywater-pdk-libs-sky130_fd_sc_hd/ac7fb61f06e6470b94e8afdf7c25268f62fbd7b1/timing/sky130_fd_sc_hd__tt_025C_1v80.lib.json", "sha256": "2a662ba8d3324c982d9a0c4e90302728db9d5fed34ffda90c63400e1c08cbd7e" }, { "file": "sky130_fd_sc_hd__buf_1__tt_025C_1v80.lib.json", "url": "https://raw.githubusercontent.com/google/skywater-pdk-libs-sky130_fd_sc_hd/ac7fb61f06e6470b94e8afdf7c25268f62fbd7b1/cells/buf/sky130_fd_sc_hd__buf_1__tt_025C_1v80.lib.json", "sha256": "c249d8d1920e114ee43b263058517be0e35c3db192732723aa2bee747442b1eb" }, { "file": "sky130_fd_sc_hd__inv_1__tt_025C_1v80.lib.json", "url": "https://raw.githubusercontent.com/google/skywater-pdk-libs-sky130_fd_sc_hd/ac7fb61f06e6470b94e8afdf7c25268f62fbd7b1/cells/inv/sky130_fd_sc_hd__inv_1__tt_025C_1v80.lib.json", "sha256": "2ebd0770e6de56dd67ce2c46c3d242be923778492c2ab814dfd3741445f8f86d" }, { "file": "sky130_fd_sc_hd__dfxtp_1__tt_025C_1v80.lib.json", "url": "https://raw.githubusercontent.com/google/skywater-pdk-libs-sky130_fd_sc_hd/ac7fb61f06e6470b94e8afdf7c25268f62fbd7b1/cells/dfxtp/sky130_fd_sc_hd__dfxtp_1__tt_025C_1v80.lib.json", "sha256": "6f7793786ce917e03b70c2420e6ca202f42a361f9d453739f71fba44832e1b7f" } ], "generated_lib_sha256": "fb7c3b98b4ef971186f79bc4ac1f7181f7655de5b96bbce54666c0b97e1bc5b9", "converter_commit": "7198cf647113f56041e02abf3eb623692820c5e1", "cell_names": [ "buf_1", "inv_1", "dfxtp_1" ], "redistribution": "Library inputs and generated Liberty are not redistributed." }, "events": [ { "case": "baseline", "started_utc": "2026-10-25T05:07:10.161776+00:00", "finished_utc": "2026-10-25T05:07:10.211417+00:00", "return_code": 0, "stdout": "OpenSTA 3.1.0 b3e1b39898 Copyright (c) 2026, Parallax Software, Inc.\nLicense GPLv3: GNU GPL version 3 \n\nThis is free software, and you are free to change and redistribute it\nunder certain conditions; type `show_copying' for details. \nThis program comes with ABSOLUTELY NO WARRANTY; for details type `show_warranty'.\nWarning 1171: ${CELL_LIB} line 23, default_fanout_load is 0.0.\nCASE baseline\n time 1ns\n capacitance 1pF\n resistance 1kohm\n voltage 1v\n current 1mA\n power 1nW\n distance 1um\nClock Period Waveform\n----------------------------------------------------\nprimary 0.90 0.00 0.45\nindependent 1.30 0.00 0.65\ndivided 1.80 0.00 0.90 (generated)\nENDPOINT capture_slow/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.042628 0.407372 library hold time\n 0.407372 data required time\n-----------------------------------------------------------------\n 0.407372 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n 0.406981 slack (MET)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n -0.050000 0.850000 clock uncertainty\n 0.000000 0.850000 clock reconvergence pessimism\n 0.850000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.099069 0.750931 library setup time\n 0.750931 data required time\n-----------------------------------------------------------------\n 0.750931 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n -0.063422 slack (VIOLATED)\n\n\nENDPOINT capture_fast/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 data arrival time\n\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n -0.050000 0.850000 clock uncertainty\n 0.000000 0.850000 clock reconvergence pessimism\n 0.850000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 0.767737 library setup time\n 0.767737 data required time\n-----------------------------------------------------------------\n 0.767737 data required time\n -0.395408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_generated/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock divided (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n 0.000000 0.900000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 1.295408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 1.295408 ^ capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 1.295408 data arrival time\n\n 1.800000 1.800000 clock divided (rise edge)\n 0.000000 1.800000 clock network delay (ideal)\n -0.050000 1.750000 clock uncertainty\n 0.000000 1.750000 clock reconvergence pessimism\n 1.750000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 1.667737 library setup time\n 1.667737 data required time\n-----------------------------------------------------------------\n 1.667737 data required time\n -1.295408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_async/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_async (rising edge-triggered flip-flop clocked by independent)\nPath Group: independent\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_async/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock independent (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_async/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_async (rising edge-triggered flip-flop clocked by independent)\nPath Group: independent\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 9.000000 9.000000 clock primary (rise edge)\n 0.000000 9.000000 clock network delay (ideal)\n 0.000000 9.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 9.395409 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 9.395409 ^ capture_async/D (sky130_fd_sc_hd__dfxtp_1)\n 9.395409 data arrival time\n\n 9.100000 9.100000 clock independent (rise edge)\n 0.000000 9.100000 clock network delay (ideal)\n -0.050000 9.050000 clock uncertainty\n 0.000000 9.050000 clock reconvergence pessimism\n 9.050000 ^ capture_async/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 8.967738 library setup time\n 8.967738 data required time\n-----------------------------------------------------------------\n 8.967738 data required time\n -9.395409 data arrival time\n-----------------------------------------------------------------\n -0.427671 slack (VIOLATED)\n\n\nCONSTRAINT_AUDIT\nWarning: There is 1 output port missing set_output_delay.\n unconstrained_out\nWarning: There is 1 unconstrained endpoint.\n unconstrained_out\nSETUP_SUMMARY\nworst slack max -0.427671\nUNCONSTRAINED_REPORT\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: unconstrained_out (output port)\nPath Group: unconstrained\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ unconstrained_out (out)\n 0.395408 data arrival time\n-----------------------------------------------------------------\n(Path is unconstrained)\n\n\n", "stderr": "\n", "command": [ "sta", "-no_init", "-exit", "check.tcl" ], "environment": { "CASE": "baseline", "CELL_LIB": "Externally fetched and hashed SkyWater subset; not redistributed." } }, { "case": "multicycle_setup", "started_utc": "2026-10-25T05:07:10.212045+00:00", "finished_utc": "2026-10-25T05:07:10.232663+00:00", "return_code": 0, "stdout": "OpenSTA 3.1.0 b3e1b39898 Copyright (c) 2026, Parallax Software, Inc.\nLicense GPLv3: GNU GPL version 3 \n\nThis is free software, and you are free to change and redistribute it\nunder certain conditions; type `show_copying' for details. \nThis program comes with ABSOLUTELY NO WARRANTY; for details type `show_warranty'.\nWarning 1171: ${CELL_LIB} line 23, default_fanout_load is 0.0.\nCASE multicycle_setup\n time 1ns\n capacitance 1pF\n resistance 1kohm\n voltage 1v\n current 1mA\n power 1nW\n distance 1um\nClock Period Waveform\n----------------------------------------------------\nprimary 0.90 0.00 0.45\nindependent 1.30 0.00 0.65\ndivided 1.80 0.00 0.90 (generated)\nENDPOINT capture_slow/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n 0.450000 1.350000 clock uncertainty\n 0.000000 1.350000 clock reconvergence pessimism\n 1.350000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.042628 1.307372 library hold time\n 1.307372 data required time\n-----------------------------------------------------------------\n 1.307372 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n -0.493019 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 1.800000 1.800000 clock primary (rise edge)\n 0.000000 1.800000 clock network delay (ideal)\n -0.050000 1.750000 clock uncertainty\n 0.000000 1.750000 clock reconvergence pessimism\n 1.750000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.099069 1.650931 library setup time\n 1.650931 data required time\n-----------------------------------------------------------------\n 1.650931 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n 0.836578 slack (MET)\n\n\nENDPOINT capture_fast/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 data arrival time\n\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n -0.050000 0.850000 clock uncertainty\n 0.000000 0.850000 clock reconvergence pessimism\n 0.850000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 0.767737 library setup time\n 0.767737 data required time\n-----------------------------------------------------------------\n 0.767737 data required time\n -0.395408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_generated/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock divided (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n 0.000000 0.900000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 1.295408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 1.295408 ^ capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 1.295408 data arrival time\n\n 1.800000 1.800000 clock divided (rise edge)\n 0.000000 1.800000 clock network delay (ideal)\n -0.050000 1.750000 clock uncertainty\n 0.000000 1.750000 clock reconvergence pessimism\n 1.750000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 1.667737 library setup time\n 1.667737 data required time\n-----------------------------------------------------------------\n 1.667737 data required time\n -1.295408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_async/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_async (rising edge-triggered flip-flop clocked by independent)\nPath Group: independent\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_async/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock independent (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_async/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_async (rising edge-triggered flip-flop clocked by independent)\nPath Group: independent\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 9.000000 9.000000 clock primary (rise edge)\n 0.000000 9.000000 clock network delay (ideal)\n 0.000000 9.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 9.395409 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 9.395409 ^ capture_async/D (sky130_fd_sc_hd__dfxtp_1)\n 9.395409 data arrival time\n\n 9.100000 9.100000 clock independent (rise edge)\n 0.000000 9.100000 clock network delay (ideal)\n -0.050000 9.050000 clock uncertainty\n 0.000000 9.050000 clock reconvergence pessimism\n 9.050000 ^ capture_async/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 8.967738 library setup time\n 8.967738 data required time\n-----------------------------------------------------------------\n 8.967738 data required time\n -9.395409 data arrival time\n-----------------------------------------------------------------\n -0.427671 slack (VIOLATED)\n\n\nCONSTRAINT_AUDIT\nWarning: There is 1 output port missing set_output_delay.\n unconstrained_out\nWarning: There is 1 unconstrained endpoint.\n unconstrained_out\nSETUP_SUMMARY\nworst slack max -0.427671\nUNCONSTRAINED_REPORT\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: unconstrained_out (output port)\nPath Group: unconstrained\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ unconstrained_out (out)\n 0.395408 data arrival time\n-----------------------------------------------------------------\n(Path is unconstrained)\n\n\n", "stderr": "\n", "command": [ "sta", "-no_init", "-exit", "check.tcl" ], "environment": { "CASE": "multicycle_setup", "CELL_LIB": "Externally fetched and hashed SkyWater subset; not redistributed." } }, { "case": "multicycle_pair", "started_utc": "2026-10-25T05:07:10.233206+00:00", "finished_utc": "2026-10-25T05:07:10.253393+00:00", "return_code": 0, "stdout": "OpenSTA 3.1.0 b3e1b39898 Copyright (c) 2026, Parallax Software, Inc.\nLicense GPLv3: GNU GPL version 3 \n\nThis is free software, and you are free to change and redistribute it\nunder certain conditions; type `show_copying' for details. \nThis program comes with ABSOLUTELY NO WARRANTY; for details type `show_warranty'.\nWarning 1171: ${CELL_LIB} line 23, default_fanout_load is 0.0.\nCASE multicycle_pair\n time 1ns\n capacitance 1pF\n resistance 1kohm\n voltage 1v\n current 1mA\n power 1nW\n distance 1um\nClock Period Waveform\n----------------------------------------------------\nprimary 0.90 0.00 0.45\nindependent 1.30 0.00 0.65\ndivided 1.80 0.00 0.90 (generated)\nENDPOINT capture_slow/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.042628 0.407372 library hold time\n 0.407372 data required time\n-----------------------------------------------------------------\n 0.407372 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n 0.406981 slack (MET)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 1.800000 1.800000 clock primary (rise edge)\n 0.000000 1.800000 clock network delay (ideal)\n -0.050000 1.750000 clock uncertainty\n 0.000000 1.750000 clock reconvergence pessimism\n 1.750000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.099069 1.650931 library setup time\n 1.650931 data required time\n-----------------------------------------------------------------\n 1.650931 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n 0.836578 slack (MET)\n\n\nENDPOINT capture_fast/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 data arrival time\n\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n -0.050000 0.850000 clock uncertainty\n 0.000000 0.850000 clock reconvergence pessimism\n 0.850000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 0.767737 library setup time\n 0.767737 data required time\n-----------------------------------------------------------------\n 0.767737 data required time\n -0.395408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_generated/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock divided (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n 0.000000 0.900000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 1.295408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 1.295408 ^ capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 1.295408 data arrival time\n\n 1.800000 1.800000 clock divided (rise edge)\n 0.000000 1.800000 clock network delay (ideal)\n -0.050000 1.750000 clock uncertainty\n 0.000000 1.750000 clock reconvergence pessimism\n 1.750000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 1.667737 library setup time\n 1.667737 data required time\n-----------------------------------------------------------------\n 1.667737 data required time\n -1.295408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_async/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_async (rising edge-triggered flip-flop clocked by independent)\nPath Group: independent\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_async/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock independent (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_async/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_async (rising edge-triggered flip-flop clocked by independent)\nPath Group: independent\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 9.000000 9.000000 clock primary (rise edge)\n 0.000000 9.000000 clock network delay (ideal)\n 0.000000 9.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 9.395409 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 9.395409 ^ capture_async/D (sky130_fd_sc_hd__dfxtp_1)\n 9.395409 data arrival time\n\n 9.100000 9.100000 clock independent (rise edge)\n 0.000000 9.100000 clock network delay (ideal)\n -0.050000 9.050000 clock uncertainty\n 0.000000 9.050000 clock reconvergence pessimism\n 9.050000 ^ capture_async/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 8.967738 library setup time\n 8.967738 data required time\n-----------------------------------------------------------------\n 8.967738 data required time\n -9.395409 data arrival time\n-----------------------------------------------------------------\n -0.427671 slack (VIOLATED)\n\n\nCONSTRAINT_AUDIT\nWarning: There is 1 output port missing set_output_delay.\n unconstrained_out\nWarning: There is 1 unconstrained endpoint.\n unconstrained_out\nSETUP_SUMMARY\nworst slack max -0.427671\nUNCONSTRAINED_REPORT\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: unconstrained_out (output port)\nPath Group: unconstrained\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ unconstrained_out (out)\n 0.395408 data arrival time\n-----------------------------------------------------------------\n(Path is unconstrained)\n\n\n", "stderr": "\n", "command": [ "sta", "-no_init", "-exit", "check.tcl" ], "environment": { "CASE": "multicycle_pair", "CELL_LIB": "Externally fetched and hashed SkyWater subset; not redistributed." } }, { "case": "false_path", "started_utc": "2026-10-25T05:07:10.253904+00:00", "finished_utc": "2026-10-25T05:07:10.274075+00:00", "return_code": 0, "stdout": "OpenSTA 3.1.0 b3e1b39898 Copyright (c) 2026, Parallax Software, Inc.\nLicense GPLv3: GNU GPL version 3 \n\nThis is free software, and you are free to change and redistribute it\nunder certain conditions; type `show_copying' for details. \nThis program comes with ABSOLUTELY NO WARRANTY; for details type `show_warranty'.\nWarning 1171: ${CELL_LIB} line 23, default_fanout_load is 0.0.\nCASE false_path\n time 1ns\n capacitance 1pF\n resistance 1kohm\n voltage 1v\n current 1mA\n power 1nW\n distance 1um\nClock Period Waveform\n----------------------------------------------------\nprimary 0.90 0.00 0.45\nindependent 1.30 0.00 0.65\ndivided 1.80 0.00 0.90 (generated)\nENDPOINT capture_slow/D\nNo paths found.\nENDPOINT capture_fast/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 data arrival time\n\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n -0.050000 0.850000 clock uncertainty\n 0.000000 0.850000 clock reconvergence pessimism\n 0.850000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 0.767737 library setup time\n 0.767737 data required time\n-----------------------------------------------------------------\n 0.767737 data required time\n -0.395408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_generated/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock divided (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n 0.000000 0.900000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 1.295408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 1.295408 ^ capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 1.295408 data arrival time\n\n 1.800000 1.800000 clock divided (rise edge)\n 0.000000 1.800000 clock network delay (ideal)\n -0.050000 1.750000 clock uncertainty\n 0.000000 1.750000 clock reconvergence pessimism\n 1.750000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 1.667737 library setup time\n 1.667737 data required time\n-----------------------------------------------------------------\n 1.667737 data required time\n -1.295408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_async/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_async (rising edge-triggered flip-flop clocked by independent)\nPath Group: independent\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_async/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock independent (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_async/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_async (rising edge-triggered flip-flop clocked by independent)\nPath Group: independent\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 9.000000 9.000000 clock primary (rise edge)\n 0.000000 9.000000 clock network delay (ideal)\n 0.000000 9.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 9.395409 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 9.395409 ^ capture_async/D (sky130_fd_sc_hd__dfxtp_1)\n 9.395409 data arrival time\n\n 9.100000 9.100000 clock independent (rise edge)\n 0.000000 9.100000 clock network delay (ideal)\n -0.050000 9.050000 clock uncertainty\n 0.000000 9.050000 clock reconvergence pessimism\n 9.050000 ^ capture_async/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 8.967738 library setup time\n 8.967738 data required time\n-----------------------------------------------------------------\n 8.967738 data required time\n -9.395409 data arrival time\n-----------------------------------------------------------------\n -0.427671 slack (VIOLATED)\n\n\nCONSTRAINT_AUDIT\nWarning: There is 1 output port missing set_output_delay.\n unconstrained_out\nWarning: There is 1 unconstrained endpoint.\n unconstrained_out\nSETUP_SUMMARY\nworst slack max -0.427671\nUNCONSTRAINED_REPORT\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: unconstrained_out (output port)\nPath Group: unconstrained\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ unconstrained_out (out)\n 0.395408 data arrival time\n-----------------------------------------------------------------\n(Path is unconstrained)\n\n\n", "stderr": "\n", "command": [ "sta", "-no_init", "-exit", "check.tcl" ], "environment": { "CASE": "false_path", "CELL_LIB": "Externally fetched and hashed SkyWater subset; not redistributed." } }, { "case": "asynchronous", "started_utc": "2026-10-25T05:07:10.274487+00:00", "finished_utc": "2026-10-25T05:07:10.294997+00:00", "return_code": 0, "stdout": "OpenSTA 3.1.0 b3e1b39898 Copyright (c) 2026, Parallax Software, Inc.\nLicense GPLv3: GNU GPL version 3 \n\nThis is free software, and you are free to change and redistribute it\nunder certain conditions; type `show_copying' for details. \nThis program comes with ABSOLUTELY NO WARRANTY; for details type `show_warranty'.\nWarning 1171: ${CELL_LIB} line 23, default_fanout_load is 0.0.\nCASE asynchronous\n time 1ns\n capacitance 1pF\n resistance 1kohm\n voltage 1v\n current 1mA\n power 1nW\n distance 1um\nClock Period Waveform\n----------------------------------------------------\nprimary 0.90 0.00 0.45\nindependent 1.30 0.00 0.65\ndivided 1.80 0.00 0.90 (generated)\nENDPOINT capture_slow/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.042628 0.407372 library hold time\n 0.407372 data required time\n-----------------------------------------------------------------\n 0.407372 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n 0.406981 slack (MET)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n -0.050000 0.850000 clock uncertainty\n 0.000000 0.850000 clock reconvergence pessimism\n 0.850000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.099069 0.750931 library setup time\n 0.750931 data required time\n-----------------------------------------------------------------\n 0.750931 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n -0.063422 slack (VIOLATED)\n\n\nENDPOINT capture_fast/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 data arrival time\n\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n -0.050000 0.850000 clock uncertainty\n 0.000000 0.850000 clock reconvergence pessimism\n 0.850000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 0.767737 library setup time\n 0.767737 data required time\n-----------------------------------------------------------------\n 0.767737 data required time\n -0.395408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_generated/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock divided (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.900000 0.900000 clock primary (rise edge)\n 0.000000 0.900000 clock network delay (ideal)\n 0.000000 0.900000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 1.295408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 1.295408 ^ capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 1.295408 data arrival time\n\n 1.800000 1.800000 clock divided (rise edge)\n 0.000000 1.800000 clock network delay (ideal)\n -0.050000 1.750000 clock uncertainty\n 0.000000 1.750000 clock reconvergence pessimism\n 1.750000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 1.667737 library setup time\n 1.667737 data required time\n-----------------------------------------------------------------\n 1.667737 data required time\n -1.295408 data arrival time\n-----------------------------------------------------------------\n 0.372329 slack (MET)\n\n\nENDPOINT capture_async/D\nNo paths found.\nCONSTRAINT_AUDIT\nWarning: There is 1 output port missing set_output_delay.\n unconstrained_out\nWarning: There is 1 unconstrained endpoint.\n unconstrained_out\nSETUP_SUMMARY\nworst slack max -0.063422\nUNCONSTRAINED_REPORT\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: unconstrained_out (output port)\nPath Group: unconstrained\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ unconstrained_out (out)\n 0.395408 data arrival time\n-----------------------------------------------------------------\n(Path is unconstrained)\n\n\n", "stderr": "\n", "command": [ "sta", "-no_init", "-exit", "check.tcl" ], "environment": { "CASE": "asynchronous", "CELL_LIB": "Externally fetched and hashed SkyWater subset; not redistributed." } }, { "case": "coverage_audit", "started_utc": "2026-10-25T05:07:10.295421+00:00", "finished_utc": "2026-10-25T05:07:10.315744+00:00", "return_code": 0, "stdout": "OpenSTA 3.1.0 b3e1b39898 Copyright (c) 2026, Parallax Software, Inc.\nLicense GPLv3: GNU GPL version 3 \n\nThis is free software, and you are free to change and redistribute it\nunder certain conditions; type `show_copying' for details. \nThis program comes with ABSOLUTELY NO WARRANTY; for details type `show_warranty'.\nWarning 1171: ${CELL_LIB} line 23, default_fanout_load is 0.0.\nCASE coverage_audit\n time 1ns\n capacitance 1pF\n resistance 1kohm\n voltage 1v\n current 1mA\n power 1nW\n distance 1um\nClock Period Waveform\n----------------------------------------------------\nprimary 1.10 0.00 0.55\nindependent 1.30 0.00 0.65\ndivided 2.20 0.00 1.10 (generated)\nENDPOINT capture_slow/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.042628 0.407372 library hold time\n 0.407372 data required time\n-----------------------------------------------------------------\n 0.407372 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n 0.406981 slack (MET)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_slow (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.101517 0.448236 v delay1/X (sky130_fd_sc_hd__buf_1)\n 0.073746 0.521981 v delay2/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.595534 v delay3/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.669087 v delay4/X (sky130_fd_sc_hd__buf_1)\n 0.073553 0.742639 v delay5/X (sky130_fd_sc_hd__buf_1)\n 0.071714 0.814353 v delay6/X (sky130_fd_sc_hd__buf_1)\n 0.000000 0.814353 v capture_slow/D (sky130_fd_sc_hd__dfxtp_1)\n 0.814353 data arrival time\n\n 1.100000 1.100000 clock primary (rise edge)\n 0.000000 1.100000 clock network delay (ideal)\n -0.050000 1.050000 clock uncertainty\n 0.000000 1.050000 clock reconvergence pessimism\n 1.050000 ^ capture_slow/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.099069 0.950931 library setup time\n 0.950931 data required time\n-----------------------------------------------------------------\n 0.950931 data required time\n -0.814353 data arrival time\n-----------------------------------------------------------------\n 0.136578 slack (MET)\n\n\nENDPOINT capture_fast/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_fast (rising edge-triggered flip-flop clocked by primary)\nPath Group: primary\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ capture_fast/D (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 data arrival time\n\n 1.100000 1.100000 clock primary (rise edge)\n 0.000000 1.100000 clock network delay (ideal)\n -0.050000 1.050000 clock uncertainty\n 0.000000 1.050000 clock reconvergence pessimism\n 1.050000 ^ capture_fast/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 0.967737 library setup time\n 0.967737 data required time\n-----------------------------------------------------------------\n 0.967737 data required time\n -0.395408 data arrival time\n-----------------------------------------------------------------\n 0.572329 slack (MET)\n\n\nENDPOINT capture_generated/D\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: min\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 clock primary (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 0.346719 v launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.346719 v capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 0.346719 data arrival time\n\n 0.000000 0.000000 clock divided (rise edge)\n 0.000000 0.000000 clock network delay (ideal)\n 0.450000 0.450000 clock uncertainty\n 0.000000 0.450000 clock reconvergence pessimism\n 0.450000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.069871 0.380129 library hold time\n 0.380129 data required time\n-----------------------------------------------------------------\n 0.380129 data required time\n -0.346719 data arrival time\n-----------------------------------------------------------------\n -0.033411 slack (VIOLATED)\n\n\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: capture_generated (rising edge-triggered flip-flop clocked by divided)\nPath Group: divided\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 1.100000 1.100000 clock primary (rise edge)\n 0.000000 1.100000 clock network delay (ideal)\n 0.000000 1.100000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 1.495408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 1.495408 ^ capture_generated/D (sky130_fd_sc_hd__dfxtp_1)\n 1.495408 data arrival time\n\n 2.200000 2.200000 clock divided (rise edge)\n 0.000000 2.200000 clock network delay (ideal)\n -0.050000 2.150000 clock uncertainty\n 0.000000 2.150000 clock reconvergence pessimism\n 2.150000 ^ capture_generated/CLK (sky130_fd_sc_hd__dfxtp_1)\n -0.082263 2.067737 library setup time\n 2.067737 data required time\n-----------------------------------------------------------------\n 2.067737 data required time\n -1.495408 data arrival time\n-----------------------------------------------------------------\n 0.572329 slack (MET)\n\n\nENDPOINT capture_async/D\nNo paths found.\nCONSTRAINT_AUDIT\nWarning: There is 1 output port missing set_output_delay.\n unconstrained_out\nWarning: There is 1 unconstrained endpoint.\n unconstrained_out\nSETUP_SUMMARY\nworst slack max 0.136578\nUNCONSTRAINED_REPORT\nStartpoint: launch (rising edge-triggered flip-flop clocked by primary)\nEndpoint: unconstrained_out (output port)\nPath Group: unconstrained\nPath Type: max\n\n Delay Time Description\n-----------------------------------------------------------------\n 0.000000 0.000000 ^ launch/CLK (sky130_fd_sc_hd__dfxtp_1)\n 0.395408 0.395408 ^ launch/Q (sky130_fd_sc_hd__dfxtp_1)\n 0.000000 0.395408 ^ unconstrained_out (out)\n 0.395408 data arrival time\n-----------------------------------------------------------------\n(Path is unconstrained)\n\n\n", "stderr": "\n", "command": [ "sta", "-no_init", "-exit", "check.tcl" ], "environment": { "CASE": "coverage_audit", "CELL_LIB": "Externally fetched and hashed SkyWater subset; not redistributed." } } ], "output_omissions": "Build/library paths tokenized; automatic runtime allocation or memory summaries omitted. Timing reports and literal errors retained.", "limits": [ "Ideal clocks; zero wire parasitics; one typical 25 C, 1.8 V cell-library corner.", "No synthesis, placement, routing, extracted parasitics, CDC proof or silicon sign-off." ] }