Fix #79: remove extra net label in repro case

lib/solvers/LongDistancePairSolver/LongDistancePairSolver.ts

@@ -55,6 +55,12 @@ export class LongDistancePairSolver extends BaseSolver {
       primaryConnectedPinIds.add(pair.pins[0].pinId)
       primaryConnectedPinIds.add(pair.pins[1].pinId)
     }
+    const directlyWiredPinIds = new Set<PinId>()
+    for (const dc of inputProblem.directConnections) {
+      for (const pinId of dc.pinIds) {
+        directlyWiredPinIds.add(pinId)
+      }
+    }
 
     const { netConnMap } = getConnectivityMapsFromInputProblem(inputProblem)
     this.netConnMap = netConnMap
@@ -73,7 +79,9 @@ export class LongDistancePairSolver extends BaseSolver {
     const addedPairKeys = new Set<string>()
 
     for (const netId of Object.keys(netConnMap.netMap)) {
-      const allPinIdsInNet = netConnMap.getIdsConnectedToNet(netId)
+      const allPinIdsInNet = netConnMap
+        .getIdsConnectedToNet(netId)
+        .filter((pinId) => directlyWiredPinIds.has(pinId))
       if (allPinIdsInNet.length < 2) continue
 
       const unconnectedPinIds = allPinIdsInNet.filter(

lib/solvers/MspConnectionPairSolver/MspConnectionPairSolver.ts

@@ -74,7 +74,16 @@ export class MspConnectionPairSolver extends BaseSolver {
       }
     }
 
-    this.queuedDcNetIds = Object.keys(netConnMap.netMap)
+    const directlyWiredPinIds = new Set<string>()
+    for (const dc of inputProblem.directConnections) {
+      for (const pid of dc.pinIds) {
+        directlyWiredPinIds.add(pid)
+      }
+    }
+    this.queuedDcNetIds = Object.keys(netConnMap.netMap).filter((netId) => {
+      const connectedIds = netConnMap.getIdsConnectedToNet(netId) as string[]
+      return connectedIds.some((id) => directlyWiredPinIds.has(id))
+    })
   }
 
   override getConstructorParams(): ConstructorParameters<