Here's my test class.  I had to turn off a couple of other triggers it was catching on and was going to back later to look at but this time it's stating the trigger it is testing (that I posted) as having the issue at line 3 which is the first line essentially.  It didn't hit the system limit until I added test parts 5 and 6 to the test class.

@isTest(seeAllData=true)
private class TestCloneOpportunityRollover {

    static testMethod void TestCloneOpportunityRollover() {

        // setup an account
        Account a = new Account();
        a.Name = 'University of California';
        a.Type = 'University';
        a.Industry = 'Other';
        a.Academic_Term__c = 'Quarter';
        a.Spring_Course_Start_Date__c = Date.newInstance(2020,01,01);
        a.Summer_Course_Start_Date__c = Date.newInstance(2020,05,01);
        a.Fall_Course_Start_Date__c = Date.newInstance(2020,09,01);
        a.Winter_Course_Start_Date__c = Date.newInstance(2020,11,01);
        insert a;
       
        //get standard pricebook
        Pricebook2  standardPb = [select id, Name, isActive from Pricebook2 where IsStandard = true limit 1];

       
        Pricebook2 pbk1 = new Pricebook2();
        pbk1.Name='Test Pricebook Entry 1';
        pbk1.Description='Test Pricebook Entry 1';
        pbk1.isActive=true;
        insert pbk1;
       
  
        Product2 prd1 = new Product2() ;
        prd1.Name='Test Product Entry 1';
        prd1.Description='Test Product Entry 1';
        prd1.productCode = 'ABC';
        prd1.isActive = true;
        insert prd1;


        PricebookEntry pbe1 = new PricebookEntry();
        pbe1.Product2ID=prd1.id;
        pbe1.Pricebook2ID=standardPb.id;
        pbe1.UnitPrice=50;
        pbe1.isActive = true;
        insert pbe1;
           
        // create new opp record
        Opportunity opp = new Opportunity();
        Opp.CloseDate = Date.newInstance(2020,01,01);
        opp.StageName = 'Prospecting';
        opp.Name = 'Test Opportunity Clone';
        opp.Type = 'New Business';
        opp.LeadSource = 'Other';
        opp.New_Subject__c = 'Biology';
        opp.New_Textbook__c = 'Text1';
        opp.New_Course_Sequence__c = '1 of 1';
        opp.Opportunity_Rolled__c = False;
        opp.Pricebook2ID = pbe1.Pricebook2ID;
        opp.Term__c = 'Spring';
        opp.Course_Type__c = 'Standard';
        opp.AccountID= a.ID;
        insert opp;
       
       
       

        // create a line item for the opp
        OpportunityLineItem oli1 = new OpportunityLineItem();
        oli1.Quantity = 200;
        oli1.OpportunityID = opp.id;
        oli1.PricebookentryID = pbe1.id;
        oli1.UnitPrice = 10;
        insert oli1;
       
         // insert contact
        Contact[] cont = new Contact[]
        {
        new Contact(LastName = 'testcontact1', AccountID=a.id),
        new Contact(LastName = 'testcontact2', AccountID=a.id)
        };   
        insert cont;   
        // insert contact role    
        OpportunityContactRole[] ocr = new OpportunityContactRole[]
        {
        new OpportunityContactRole(Role ='Business User',OpportunityID=Opp.id ,Contactid = cont[0].id ,isprimary = True),
        new OpportunityContactRole(Role ='Business User',OpportunityID=Opp.id ,Contactid = cont[1].id ,isprimary = False)
        };
        insert ocr;   

        // Construct the standard controller
        ApexPages.StandardController con = new ApexPages.StandardController(opp);


            
        // Switch to test context
        Test.startTest();
        // Cause automatic copy via stage of commitment
        opp.StageName = 'Commitment';
        update opp;
       
        Opportunity newopp1 = [select id, Type, StageName, CloseDate, Term__c, Opportunity_Rolled_From__c from Opportunity WHERE Opportunity_Rolled_From__c = :opp.id];
        System.assertNotEquals(newopp1, null);
        System.assertEquals('Renewal', newopp1.type);
        System.assertEquals('Prospecting', newopp1.stagename);
        System.assertEquals(a.Summer_Course_Start_Date__c, newopp1.closedate);
        System.assertEquals(opp.id, newopp1.Opportunity_Rolled_From__c);
        System.assertEquals('Summer', newopp1.Term__c);
        // check that the line item was created
        List<OpportunityLineItem> newOli1 = [Select oli.Id From OpportunityLineItem oli where OpportunityID = :newopp1.id];
        System.assertEquals(newOli1.size(),1);
        List<OpportunityContactRole> newOCR1 = [Select ocr.Id From OpportunityContactRole ocr where OpportunityID = :newopp1.id];
        System.assertEquals(newOCR1.size(),2);
 
 
  // Switch to 2nd test
        // Using the Summer Term of the new Opp cause automatic copy via stage of commitment
  newopp1.StageName = 'Commitment';
  newopp1.New_Textbook__c = 'Text1';
        newopp1.New_Course_Sequence__c = '1 of 1'; 
        update newopp1;

        Opportunity newOpp2 = [select id, Type, StageName, CloseDate, Term__c, Opportunity_Rolled_From__c from Opportunity WHERE Opportunity_Rolled_From__c = :newopp1.id];
        System.assertNotEquals(newOpp2, null);
        System.assertEquals('Renewal', newopp2.type);
        System.assertEquals('Prospecting', newopp2.stagename);
        System.assertEquals(a.Fall_Course_Start_Date__c, newopp2.closedate);
        System.assertEquals(newopp1.id, newopp2.Opportunity_Rolled_From__c);
        System.assertEquals('Fall', newopp2.Term__c);
        // check that the line item was created
        List<OpportunityLineItem> newOLI2 = [Select oli.Id From OpportunityLineItem oli where OpportunityID = :newOpp2.id];
        System.assertEquals(newOLI2.size(),1);
        List<OpportunityContactRole> newOCR2 = [Select ocr.Id From OpportunityContactRole ocr where OpportunityID = :newOpp2.id];
        System.assertEquals(newOCR2.size(),2);
 
  // Switch to 3rd test
        // Using the Fall Term of the new Opp cause automatic copy via stage of commitment
  newopp2.StageName = 'Commitment';
  newopp2.New_Textbook__c = 'Text1';
        newopp2.New_Course_Sequence__c = '1 of 1'; 
        update newopp2;

        Opportunity newOpp3 = [select id, Type, StageName, CloseDate, Term__c, Opportunity_Rolled_From__c from Opportunity WHERE Opportunity_Rolled_From__c = :newopp2.id];
        System.assertNotEquals(newOpp3, null);
        System.assertEquals('Renewal', newopp3.type);
        System.assertEquals('Prospecting', newopp3.stagename);
        System.assertEquals(a.Winter_Course_Start_Date__c, newopp3.closedate);
        System.assertEquals(newopp2.id, newopp3.Opportunity_Rolled_From__c);
        System.assertEquals('Winter', newopp3.Term__c);
        // check that the line item was created
        List<OpportunityLineItem> newOLI3 = [Select oli.Id From OpportunityLineItem oli where OpportunityID = :newOpp3.id];
        System.assertEquals(newOLI3.size(),1);
        List<OpportunityContactRole> newOCR3 = [Select ocr.Id From OpportunityContactRole ocr where OpportunityID = :newOpp3.id];
        System.assertEquals(newOCR3.size(),2);
 
  // Switch to 4th test
        // Using the Winter Term of the new Opp cause automatic copy via stage of commitment
  newopp3.StageName = 'Commitment';
  newopp3.New_Textbook__c = 'Text1';
        newopp3.New_Course_Sequence__c = '1 of 1'; 
        update newopp3;

        Opportunity newopp4 = [select id, Type, StageName, CloseDate, Term__c, Opportunity_Rolled_From__c from Opportunity WHERE Opportunity_Rolled_From__c = :newopp3.id];
        System.assertNotEquals(newopp4, null);
        System.assertEquals('Renewal', newopp4.type);
        System.assertEquals('Prospecting', newopp4.stagename);
        System.assertEquals(a.Spring_Course_Start_Date__c, newopp4.closedate);
        System.assertEquals(newopp3.id, newopp4.Opportunity_Rolled_From__c);
        System.assertEquals('Spring', newopp4.Term__c);
        // check that the line item was created
        List<OpportunityLineItem> newOLI4 = [Select oli.Id From OpportunityLineItem oli where OpportunityID = :newopp4.id];
        System.assertEquals(newOLI4.size(),1);
        List<OpportunityContactRole> newOCR4 = [Select ocr.Id From OpportunityContactRole ocr where OpportunityID = :newopp4.id];
        System.assertEquals(newOCR4.size(),2);
 
  // Switch to 5th test
        // Using the Spring Term of the new Opp and changing course type to Single Semester then cause automatic copy via stage of commitment
  newopp4.course_type__c = 'Single Semester';
        update newopp4;
  newopp4.StageName = 'Commitment';
  newopp4.New_Textbook__c = 'Text1';
        newopp4.New_Course_Sequence__c = '1 of 1'; 
        update newopp4;

        Opportunity newopp5 = [select id, Type, StageName, CloseDate, Term__c, Opportunity_Rolled_From__c from Opportunity WHERE Opportunity_Rolled_From__c = :newopp4.id];
        System.assertNotEquals(newopp5, null);
        System.assertEquals('Renewal', newopp5.type);
        System.assertEquals('Prospecting', newopp5.stagename);
        System.assertEquals(a.Fall_Course_Start_Date__c, newopp5.closedate);
        System.assertEquals(newopp4.id, newopp5.Opportunity_Rolled_From__c);
        System.assertEquals('Fall', newopp5.Term__c);
        // check that the line item was created
        List<OpportunityLineItem> newOLI5 = [Select oli.Id From OpportunityLineItem oli where OpportunityID = :newopp5.id];
        System.assertEquals(newOLI5.size(),1);
        List<OpportunityContactRole> newOCR5 = [Select ocr.Id From OpportunityContactRole ocr where OpportunityID = :newopp5.id];
        System.assertEquals(newOCR5.size(),2);
 
  // Switch to 6th test
        // Change Term to Winter of the new Opp then cause automatic copy via stage of commitment
  newopp5.Term__c = 'Winter';
  newopp5.StageName = 'Commitment';
  newopp5.New_Textbook__c = 'Text1';
        newopp5.New_Course_Sequence__c = '1 of 1'; 
        update newopp5;

        Opportunity newopp6 = [select id, Type, StageName, CloseDate, Term__c, Opportunity_Rolled_From__c from Opportunity WHERE Opportunity_Rolled_From__c = :newopp5.id];
        System.assertNotEquals(newopp6, null);
        System.assertEquals('Renewal', newopp6.type);
        System.assertEquals('Prospecting', newopp6.stagename);
        System.assertEquals(a.Summer_Course_Start_Date__c, newopp6.closedate);
        System.assertEquals(newopp5.id, newopp6.Opportunity_Rolled_From__c);
        System.assertEquals('Summer', newopp6.Term__c);
        // check that the line item was created
        List<OpportunityLineItem> newOLI6 = [Select oli.Id From OpportunityLineItem oli where OpportunityID = :newopp6.id];
        System.assertEquals(newOLI6.size(),1);
        List<OpportunityContactRole> newOCR6 = [Select ocr.Id From OpportunityContactRole ocr where OpportunityID = :newopp6.id];
        System.assertEquals(newOCR6.size(),2);
       
        // Switch back to runtime context
        Test.stopTest();      

    }

}