diff --git a/openfpga_flow/regression_test_scripts/basic_reg_test.sh b/openfpga_flow/regression_test_scripts/basic_reg_test.sh
index 9e7d8bed1..1276e8071 100755
--- a/openfpga_flow/regression_test_scripts/basic_reg_test.sh
+++ b/openfpga_flow/regression_test_scripts/basic_reg_test.sh
@@ -245,6 +245,7 @@ run-task basic_tests/clock_network/homo_2clock_2layer_disable_unused $@
 run-task basic_tests/clock_network/homo_2clock_2layer_disable_unused_tree $@
 run-task basic_tests/clock_network/homo_1clock_1reset_2layer $@
 run-task basic_tests/clock_network/homo_1clock_1reset_3layer_2entry $@
+run-task basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused $@
 run-task basic_tests/clock_network/homo_1clock_1reset_2layer_y_entry $@
 run-task basic_tests/clock_network/homo_1clock_1reset_2layer_on_lut $@
 run-task basic_tests/clock_network/homo_1clock_1reset_2layer_on_lut_pb_pin_fixup $@
diff --git a/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/clk_arch_1clk_1rst_3layer.xml b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/clk_arch_1clk_1rst_3layer.xml
new file mode 100644
index 000000000..e7ff2bd18
--- /dev/null
+++ b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/clk_arch_1clk_1rst_3layer.xml
@@ -0,0 +1,72 @@
+<clock_networks default_segment="L1" default_tap_switch="ipin_cblock" default_driver_switch="0"> 
+  <clock_network name="clk_tree_2lvl" global_port="op_clk[0:0]"> 
+    <spine name="clk_spine_lvl0_botm0" start_x="1" start_y="1" end_x="1" end_y="2"> 
+      <switch_point tap="clk_spine_lvl1_right" x="1" y="2"/> 
+    </spine>
+    <spine name="clk_spine_lvl0_botm1" start_x="2" start_y="1" end_x="2" end_y="2"> 
+      <switch_point tap="clk_spine_lvl1_left" x="2" y="2"/> 
+    </spine>
+    <spine name="clk_spine_lvl1_left" start_x="2" start_y="2" end_x="1" end_y="2"> 
+      <switch_point tap="clk_rib_lvl2_x0y2_upper" x="0" y="2"/> 
+      <switch_point tap="clk_rib_lvl2_x0y2_lower" x="0" y="2"/> 
+      <switch_point tap="clk_rib_lvl2_x1y2_upper" x="1" y="2"/> 
+      <switch_point tap="clk_rib_lvl2_x1y2_lower" x="1" y="2"/> 
+    </spine>  
+    <spine name="clk_spine_lvl1_right" start_x="2" start_y="2" end_x="4" end_y="2"> 
+      <switch_point tap="clk_rib_lvl2_x2y2_upper" x="2" y="2"/> 
+      <switch_point tap="clk_rib_lvl2_x2y2_lower" x="2" y="2"/> 
+      <switch_point tap="clk_rib_lvl2_x3y2_upper" x="3" y="2"/> 
+      <switch_point tap="clk_rib_lvl2_x3y2_lower" x="3" y="2"/> 
+      <switch_point tap="clk_rib_lvl2_x4y2_upper" x="4" y="2"/> 
+      <switch_point tap="clk_rib_lvl2_x4y2_lower" x="4" y="2"/> 
+    </spine>  
+    <spine name="clk_rib_lvl2_x0y2_upper" start_x="0" start_y="3" end_x="0" end_y="4"/>
+    <spine name="clk_rib_lvl2_x0y2_lower" start_x="0" start_y="2" end_x="0" end_y="1"/>
+    <spine name="clk_rib_lvl2_x1y2_upper" start_x="1" start_y="3" end_x="1" end_y="4"/>
+    <spine name="clk_rib_lvl2_x1y2_lower" start_x="1" start_y="2" end_x="1" end_y="1"/>
+    <spine name="clk_rib_lvl2_x2y2_upper" start_x="2" start_y="3" end_x="2" end_y="4"/>
+    <spine name="clk_rib_lvl2_x2y2_lower" start_x="2" start_y="2" end_x="2" end_y="1"/>
+    <spine name="clk_rib_lvl2_x3y2_upper" start_x="3" start_y="3" end_x="3" end_y="4"/>
+    <spine name="clk_rib_lvl2_x3y2_lower" start_x="3" start_y="2" end_x="3" end_y="1"/>
+    <spine name="clk_rib_lvl2_x4y2_upper" start_x="4" start_y="3" end_x="4" end_y="4"/>
+    <spine name="clk_rib_lvl2_x4y2_lower" start_x="4" start_y="2" end_x="4" end_y="1"/>
+    <taps>
+      <all from_pin="op_clk[0:0]" to_pin="clb[0:0].clk[0:0]"/>
+    </taps>
+  </clock_network>  
+  <clock_network name="rst_tree_2lvl" global_port="op_reset[0:0]"> 
+    <spine name="rst_spine_lvl0_botm0" start_x="1" start_y="1" end_x="1" end_y="2"> 
+      <switch_point tap="rst_spine_lvl1_right" x="1" y="2"/> 
+    </spine>
+    <spine name="rst_spine_lvl0_botm1" start_x="2" start_y="1" end_x="2" end_y="2"> 
+      <switch_point tap="rst_spine_lvl1_left" x="2" y="2"/> 
+    </spine>
+    <spine name="rst_spine_lvl1_left" start_x="2" start_y="2" end_x="1" end_y="2"> 
+      <switch_point tap="rst_rib_lvl2_x0y2_upper" x="0" y="2"/> 
+      <switch_point tap="rst_rib_lvl2_x0y2_lower" x="0" y="2"/> 
+      <switch_point tap="rst_rib_lvl2_x1y2_upper" x="1" y="2"/> 
+      <switch_point tap="rst_rib_lvl2_x1y2_lower" x="1" y="2"/> 
+    </spine>  
+    <spine name="rst_spine_lvl1_right" start_x="2" start_y="2" end_x="4" end_y="2"> 
+      <switch_point tap="rst_rib_lvl2_x2y2_upper" x="2" y="2"/> 
+      <switch_point tap="rst_rib_lvl2_x2y2_lower" x="2" y="2"/> 
+      <switch_point tap="rst_rib_lvl2_x3y2_upper" x="3" y="2"/> 
+      <switch_point tap="rst_rib_lvl2_x3y2_lower" x="3" y="2"/> 
+      <switch_point tap="rst_rib_lvl2_x4y2_upper" x="4" y="2"/> 
+      <switch_point tap="rst_rib_lvl2_x4y2_lower" x="4" y="2"/> 
+    </spine>  
+    <spine name="rst_rib_lvl2_x0y2_upper" start_x="0" start_y="3" end_x="0" end_y="4"/>
+    <spine name="rst_rib_lvl2_x0y2_lower" start_x="0" start_y="2" end_x="0" end_y="1"/>
+    <spine name="rst_rib_lvl2_x1y2_upper" start_x="1" start_y="3" end_x="1" end_y="4"/>
+    <spine name="rst_rib_lvl2_x1y2_lower" start_x="1" start_y="2" end_x="1" end_y="1"/>
+    <spine name="rst_rib_lvl2_x2y2_upper" start_x="2" start_y="3" end_x="2" end_y="4"/>
+    <spine name="rst_rib_lvl2_x2y2_lower" start_x="2" start_y="2" end_x="2" end_y="1"/>
+    <spine name="rst_rib_lvl2_x3y2_upper" start_x="3" start_y="3" end_x="3" end_y="4"/>
+    <spine name="rst_rib_lvl2_x3y2_lower" start_x="3" start_y="2" end_x="3" end_y="1"/>
+    <spine name="rst_rib_lvl2_x4y2_upper" start_x="4" start_y="3" end_x="4" end_y="4"/>
+    <spine name="rst_rib_lvl2_x4y2_lower" start_x="4" start_y="2" end_x="4" end_y="1"/>
+    <taps>
+      <all from_pin="op_reset[0:0]" to_pin="clb[0:0].reset[0:0]"/>
+    </taps>
+  </clock_network>  
+</clock_networks> 
diff --git a/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/pin_constraints_reset.xml b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/pin_constraints_reset.xml
new file mode 100644
index 000000000..3788a1411
--- /dev/null
+++ b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/pin_constraints_reset.xml
@@ -0,0 +1,8 @@
+<pin_constraints>
+  <!-- For a given .blif file, we want to assign 
+       - the reset signal to the op_reset[0] port of the FPGA fabric
+    -->
+  <set_io pin="op_reset[0]" net="reset"/>
+  <set_io pin="op_clk[0]" net="clk"/>
+</pin_constraints>
+
diff --git a/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/pin_constraints_resetb.xml b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/pin_constraints_resetb.xml
new file mode 100644
index 000000000..1311926f5
--- /dev/null
+++ b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/pin_constraints_resetb.xml
@@ -0,0 +1,8 @@
+<pin_constraints>
+  <!-- For a given .blif file, we want to assign 
+       - the reset signal to the op_reset[0] port of the FPGA fabric
+    -->
+  <set_io pin="op_reset[0]" net="resetb" default_value="1"/>
+  <set_io pin="op_clk[0]" net="clk"/>
+</pin_constraints>
+
diff --git a/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/repack_pin_constraints.xml b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/repack_pin_constraints.xml
new file mode 100644
index 000000000..06a125111
--- /dev/null
+++ b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/repack_pin_constraints.xml
@@ -0,0 +1,4 @@
+<repack_design_constraints>
+  <!-- Intended to be dummy -->
+</repack_design_constraints>
+
diff --git a/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/task.conf b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/task.conf
new file mode 100644
index 000000000..62745b0e3
--- /dev/null
+++ b/openfpga_flow/tasks/basic_tests/clock_network/homo_1clock_1reset_3layer_2entry_disable_unused/config/task.conf
@@ -0,0 +1,54 @@
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+# Configuration file for running experiments
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+# timeout_each_job : FPGA Task script splits fpga flow into multiple jobs
+# Each job execute fpga_flow script on combination of architecture & benchmark
+# timeout_each_job is timeout for each job
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+
+[GENERAL]
+run_engine=openfpga_shell
+power_tech_file = ${PATH:OPENFPGA_PATH}/openfpga_flow/tech/PTM_45nm/45nm.xml
+power_analysis = false
+spice_output=false
+verilog_output=true
+timeout_each_job = 3*60
+fpga_flow=yosys_vpr
+
+[OpenFPGA_SHELL]
+openfpga_shell_template=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_shell_scripts/example_clkntwk_no_ace_script.openfpga
+openfpga_arch_file=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_arch/k4_frac_N4_fracff_40nm_Ntwk1clk1rst2lvl_cc_openfpga.xml
+openfpga_sim_setting_file=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_simulation_settings/fixed_sim_openfpga.xml
+openfpga_repack_constraints_file=${PATH:TASK_DIR}/config/repack_pin_constraints.xml
+openfpga_vpr_device_layout=4x4
+openfpga_vpr_route_chan_width=32
+openfpga_clock_arch_file=${PATH:TASK_DIR}/config/clk_arch_1clk_1rst_3layer.xml
+openfpga_verilog_testbench_port_mapping=--explicit_port_mapping
+openfpga_route_clock_options=--disable_unused_trees --disable_unused_spines
+
+[ARCHITECTURES]
+arch0=${PATH:OPENFPGA_PATH}/openfpga_flow/vpr_arch/k4_frac_N4_tileable_fracff_40nm.xml
+
+[BENCHMARKS]
+bench0=${PATH:OPENFPGA_PATH}/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_reset/counter.v
+bench1=${PATH:OPENFPGA_PATH}/openfpga_flow/benchmarks/micro_benchmark/counters/counter_8bit_async_resetb/counter.v
+
+[SYNTHESIS_PARAM]
+# Yosys script parameters
+bench_yosys_cell_sim_verilog_common=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_yosys_techlib/openfpga_dff_sim.v
+bench_yosys_dff_map_verilog_common=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_yosys_techlib/openfpga_dff_map.v
+bench_read_verilog_options_common = -nolatches
+bench_yosys_common=${PATH:OPENFPGA_PATH}/openfpga_flow/misc/ys_tmpl_yosys_vpr_dff_flow.ys
+bench_yosys_rewrite_common=${PATH:OPENFPGA_PATH}/openfpga_flow/misc/ys_tmpl_yosys_vpr_flow_with_rewrite.ys;${PATH:OPENFPGA_PATH}/openfpga_flow/misc/ys_tmpl_rewrite_flow.ys
+
+bench0_top = counter
+bench0_openfpga_pin_constraints_file = ${PATH:TASK_DIR}/config/pin_constraints_reset.xml
+bench0_openfpga_verilog_testbench_port_mapping=
+
+bench1_top = counter
+bench1_openfpga_pin_constraints_file = ${PATH:TASK_DIR}/config/pin_constraints_resetb.xml
+bench1_openfpga_verilog_testbench_port_mapping=
+
+[SCRIPT_PARAM_MIN_ROUTE_CHAN_WIDTH]
+end_flow_with_test=
+vpr_fpga_verilog_formal_verification_top_netlist=