<PAGE>
 
                                                                     EXHIBIT 4.1


THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED OR
OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT
OR PURSUANT TO RULE 144 OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE
CORPORATION AND ITS COUNSEL THAT SUCH REGISTRATION IS NOT REQUIRED.


                                WARRANT TO PURCHASE STOCK

Corporation:                    Consilium, Inc., a Delaware Corporation
Number of Shares:               70,000
Class of Stock:                 Common
Initial Exercise Price:         $3.98 per share
Issue Date:                     April 1, 1997
Expiration Date:                April 1, 2002 (Subject to Article 4.1)



  THIS WARRANT CERTIFIES THAT, in consideration of the payment of $1.00 and for
other good and valuable consideration, IMPERIAL BANCORP ("Holder") is entitled
to purchase the number of fully paid and nonassessable shares of the class of
securities (the "Shares") of the corporation (the "Company") at the initial
exercise price per Share (the "Warrant Price") all as set forth above and as
adjusted pursuant to Article 2 of this Warrant, subject to the provisions and
upon the terms and conditions set forth of this Warrant.

ARTICLE 1. EXERCISE
           --------

  1.1  Method of Exercise.  Holder may exercise this Warrant by delivering this
       ------------------                                                      
Warrant and a duly executed Notice of Exercise in substantially the form
attached as Appendix 1 to the principal office of the Company.  Unless Holder is
exercising the conversion right set forth in Section 1.2, Holder shall also
deliver to the Company a check for the aggregate Warrant Price for the Shares
being purchased.

  1.2  Conversion Right.  In lieu of exercising this Warrant as specified in
       ----------------                                                     
Section 1.1, Holder may from time to time convert this Warrant, in whole or in
part, into a number of Shares determined by dividing (a) the aggregate fair
market value of the Shares or other securities otherwise issuable upon exercise
of this Warrant minus the aggregate Warrant Price of such Shares by (b) the fair
market value of one Share.  The fair market value of the Shares shall be
determined pursuant to Section 1.5.


  1.5  Fair Market Value.  If the Shares are traded regularly in a public
       -----------------                                                 
market, the fair market value of the Shares shall be the closing price of the
Shares (or the closing price of the Company's stock into which the Shares are
convertible) reported for the business day immediately before Holder delivers
its Notice of Exercise to the Company.  If the Shares are not regularly traded
in a public market, the
<PAGE>
 
Board of Directors of the Company shall determine fair market value in its
reasonable good faith judgment. The foregoing notwithstanding, if Holder advises
the Board of Directors in writing that Holder disagrees with such determination,
then the Company and Holder shall promptly agree upon a reputable investment
banking firm to undertake such valuation. If the valuation of such investment
banking firm is greater than that determined by the Board of Directors, then all
fees and expenses of such investment banking firm shall be paid by the Company.
In all other circumstances, such fees and expenses shall be paid by Holder.

  1.6  Delivery of Certificate and New Warrant.  Promptly after Holder exercises
       ---------------------------------------                                  
or converts this Warrant, the Company shall deliver to Holder certificates for
the Shares acquired and, if this Warrant has not been fully exercised or
converted and has not expired, a new Warrant representing the Shares not so
acquired.

  1.7  Replacement of Warrants.  On receipt of evidence reasonably satisfactory
       -----------------------                                                 
to the Company of the loss, theft, destruction or mutilation of this Warrant
and, in the case of loss, theft or destruction, on delivery of an indemnity
agreement reasonably satisfactory in form and amount to the Company or, in the
case of mutilation, or surrender and cancellation of this Warrant, the Company
at its expense shall execute and deliver, in lieu of this Warrant, a new warrant
of like tenor.

  1.8  Repurchase on Sale, Merger, or Consolidation of the Company.
       ----------------------------------------------------------- 

       1.8.1.  "Acquisition". For the purpose of this Warrant, "Acquisition"
                -----------
means any sale, license, or other disposition of all or substantially all of the
assets (including intellectual property) of the Company, or any reorganization,
consolidation, or merger of the Company where the holders of the Company's
securities before the transaction beneficially own less than 50% of the
outstanding voting securities of the surviving entity after the transaction.

       1.8.2.  Assumption of Warrant. If upon the closing of any Acquisition the
               ---------------------
successor entity assumes the obligations of this Warrant, then this Warrant
shall be exercisable for the same securities, cash, and property as would be
payable for the Shares issuable upon exercise of the unexercised portion of this
Warrant as if such Shares were outstanding on the record date for the
Acquisition and subsequent closing. The Warrant Price shall be adjusted
accordingly. The Company shall use reasonable efforts to cause the surviving
corporation to assume the obligations of this Warrant.

       1.8.3.  Nonassumption. If upon the closing of any Acquisition the
               -------------
successor entity does not assume the obligations of this Warrant and Holder has
not otherwise exercised this Warrant in full, then the unexercised portion of
this Warrant shall be deemed to have been automatically converted pursuant to
Section 1.2 and thereafter Holder shall participate in the Acquisition on the
same terms as other holders of the same class of securities of the Company.


ARTICLE 2. ADJUSTMENTS TO THE SHARES.
           ------------------------- 

  2.1  Stock Dividends, Splits, Etc.  If the Company declares or pays a dividend
       ----------------------------                                             
on its common stock payable in common stock, or other securities, subdivides the
outstanding common stock into a 

                                       2
<PAGE>
 
greater amount of common stock, then upon exercise of this Warrant, for each
Share acquired, Holder shall receive, without cost to Holder, the total number
and kind of securities to which Holder would have been entitled had Holder owned
the Shares of record as of the date the dividend or subdivision occurred.

  2.2  Reclassification, Exchange or Substitution.  Upon any reclassification,
       ------------------------------------------                             
exchange, substitution, or other event that results in a change of the number
and/or class of the securities issuable upon exercise or conversion of this
Warrant, Holder shall be entitled to receive, upon exercise or conversion of
this Warrant, the number and kind of securities and property that Holder would
have received for the Shares if this Warrant had been exercised immediately
before such reclassification, exchange, substitution, or other event.  Such an
event shall include any automatic conversion of the outstanding or issuable
securities of the Company of the same class or series as the Shares to common
stock pursuant to the terms of the Company's Articles of Incorporation upon the
closing of a registered public offering of the Company's common stock.  The
Company or its successor shall promptly issue to Holder a new Warrant for such
new securities or other property.  The new Warrant shall provide for adjustments
which shall be as nearly equivalent as may be practicable to the adjustments
provided for in this Article 2 including, without limitation, adjustments to the
Warrant Price and to the number of securities or property issuable upon exercise
of the new Warrant.  The provisions of this Section 2.2 shall similarly apply to
successive reclassifications, exchanges, substitutions, or other events.

  2.3  Adjustments for Combinations, Etc.  If the outstanding Shares are
       ---------------------------------                                
combined or consolidated, by reclassification or otherwise, into a lesser number
of shares, the Warrant Price shall be proportionately increased.

  2.4  Adjustments for Diluting Issuances.  The Warrant Price and the number of
       ----------------------------------                                      
Shares issuable upon exercise of this Warrant shall be subject to adjustment,
from time to time, in the manner set forth on Exhibit A, if attached, in the
event of Diluting Issuances (as defined on Exhibit A).

  2.5  No Impairment.  The Company shall not, by amendment of its Articles of
       -------------                                                         
Incorporation or through a reorganization, transfer of assets, consolidation,
merger, dissolution, issue, or sale of securities or any other voluntary action,
avoid or seek to avoid the observance or performance of any of the terms to be
observed or performed under this Warrant by the Company, but shall at all times
in good faith assist in carrying out all the provisions of this Article 2 and in
taking all such action as may be necessary or appropriate to protect Holder's
rights under this Article against impairment.  If the Company takes any action
affecting the Shares or its common stock other than as described above that
adversely affects Holder's rights under this Warrant, the Warrant Price shall be
adjusted downward and the number of Shares issuable upon exercise of this
Warrant shall be adjusted upward in such a manner that the aggregate Warrant
Price of this Warrant is unchanged.

  2.6  Certificate as to Adjustments.  Upon each adjustment of the Warrant
       -----------------------------                                      
Price, the Company at its expense shall promptly compute such adjustment, and
furnish Holder with a certificate of its Chief Financial Officer setting forth
such adjustment and the facts upon which such adjustment is based.  The Company
shall, upon written request, furnish Holder a certificate setting forth the
Warrant Price in effect upon the date thereof and the series of adjustments
leading to such Warrant Price.

                                       3
<PAGE>
 
ARTICLE 3. REPRESENTATIONS AND COVENANTS OF THE COMPANY.
           -------------------------------------------- 

  3.1  Representations and Warranties.  The Company hereby represents and
       ------------------------------                                    
warrants to the Holder that all securities, if any, issuable upon conversion of
the Shares, shall, upon issuance, be duly authorized, validly issued, fully paid
and nonassessable, and free of any liens and encumbrances except for
restrictions on transfer provided for herein or under applicable federal and
state securities laws.

  3.2  Notice of Certain Events.  If the Company proposes at any time (a) to
       ------------------------                                             
declare any dividend or distribution upon its common stock, whether in cash,
property, stock, or other securities and whether or not a regular cash dividend;
(b) to offer for subscription pro rata to the holders of any class or series of
its stock any additional shares of stock of any class or series or other rights;
(c) to effect any reclassification or recapitalization of common stock; (d) to
merge or consolidate with or into any other corporation, or sell, lease,
license, or convey all or substantially all of its assets, or to liquidate,
dissolve or wind up; or (e) offer holders of registration rights the opportunity
to participate in an underwritten public offering of the company's securities
for cash, then, in connection with each such event, the Company shall give
Holder (1) at least 20 days prior written notice of the date on which a record
will be taken for such dividend, distribution, or subscription rights (and
specifying the date on which the holders of common stock will be entitled
thereto) or for determining rights to vote, if any, in respect of the matters
referred to in (c) and (d) above; (2) in the case of the matters referred to in
(c) and (d) above at least 20 days prior written notice of the date when the
same will take place (and specifying the date on which the holders of common
stock will be entitled to exchange their common stock for securities or other
property deliverable upon the occurrence of such event); and (3) in the case of
the matter referred to in (e) above, the same notice as is given to the holders
of such registration rights.

  3.3  Information Rights.  So long as the Holder holds this Warrant ad/or any
       ------------------                                                     
of the Shares, the Company shall deliver to the Holder (a) promptly after
mailing, copies of all communiques to the shareholders of the Company, (b)
within ninety (90) days after the end of each fiscal year of the Company, the
annual audited financial statements of the Company certified by independent
public accountants of recognized standing and (c) within forty-five (45) days
after the end of each of the first three quarters of each fiscal year, the
Company's quarterly, unaudited financial statements.


  3.4  Registration Under Securities Act of 1933, as amended. The Company agrees
       -----------------------------------------------------                    
that the Shares shall be subject to  piggy back rights.

ARTICLE 4. MISCELLANEOUS.
           ------------- 

  4.1  Term: Notice of Expiration.  This Warrant is exercisable, in whole or in
       --------------------------                                              
part, at any time and from time to time on or before the Expiration Date set
forth above.  The Company shall give Holder written notice of Holder's right to
exercise this Warrant in the form attached as Appendix 2 not more than 90 days
and not less than 30 days before the Expiration Date. If the notice is not so
given, the Expiration Date shall automatically be extended until 30 days after
the date the Company delivers the notice to Holder.

                                       4
<PAGE>
 
  4.2  Legends.  This Warrant and the Shares (and the securities issuable,
       -------                                                            
directly or indirectly, upon conversion of the Shares, if any) shall be
imprinted with a legend in substantially the following form:

     THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
     AMENDED, AND MAY NOT BE SOLD, PLEDGED OR OTHERWISE TRANSFERRED WITHOUT AN
     EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR PURSUANT TO RULE 144 OR AN
     OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE CORPORATION AND ITS
     COUNSEL THAT SUCH REGISTRATION IS NOT REQUIRED.

  4.3  Compliance with Securities Laws on Transfer.  This Warrant and the Shares
       -------------------------------------------                              
issuable upon exercise this Warrant (and the securities issuable, directly or
indirectly, upon conversion of the Shares, if any) may not be transferred or
assigned in whole or in part without compliance with applicable federal and
state securities laws by the transferor and the transferee (including, without
limitation, the delivery of investment representation letters and legal opinions
reasonably satisfactory to the Company).  The Company shall not require Holder
to provide an opinion of counsel if the transfer is to an affiliate of Holder or
if there is no material question as to the availability of current information
as referenced in Rule 144(c), Holder represents that it has complied with Rule
144(d) and (e) in reasonable detail, the selling broker represents that it has
complied with Rule 144(f), and the Company is provided with a copy of Holder's
notice of proposed sale.

  4.4  Transfer Procedure.  Subject to the provisions of Section 4.2, Holder may
       ------------------                                                       
transfer all or part of this Warrant or the Shares issuable upon exercise of
this Warrant (or the securities issuable, directly or indirectly, upon
conversion of the Shares, if any) by giving the Company notice of the portion of
the Warrant being transferred setting forth the name, address and taxpayer
identification number of the transferee and surrendering this Warrant to the
Company for reissuance to the transferee(s) (and Holder, if applicable).  Unless
the Company is filing financial information with the SEC pursuant to the
Securities Exchange Act of 1934, the Company shall have the right to refuse to
transfer any portion of this Warrant to any person who directly competes with
the Company.

  4.5  Notices.  All notices and other communications from the Company to the
       -------                                                               
Holder, or vice versa, shall be deemed delivered and effective when given
personally or mailed by first-class registered or certified mail, postage
prepaid, at such address as may have been furnished to the Company or the
Holder, as the case may be, in writing by the Company or such Holder from time
to time.

  4.6  Waiver.  This Warrant and any term hereof may be changed, waived,
       ------                                                           
discharged or terminated only by an instrument in writing signed by the party
against which enforcement of such change, waiver, discharge or termination is
sought.

  4.7  Attorneys' Fees.  In the event of any dispute between the parties
       ---------------                                                  
concerning the terms and provisions of this Warrant, the party prevailing in
such dispute shall be entitled to collect from the other party all costs
incurred in such dispute, including reasonable attorneys' fees.

                                       5
<PAGE>
 
  4.8  Governing Law.  This Warrant shall be governed by and construed in
       -------------                                                     
accordance with the
laws of the State of California, without giving effect to its principles
regarding conflicts of law.

 
                                    Consilium, Inc.


                                    By:    
                                       -----------------------------------------

                                    Name:
                                         ---------------------------------------

                                    Title:
                                          --------------------------------------

                                       6
<PAGE>
 
                                  APPENDIX 1

                              NOTICE OF EXERCISE
                              ------------------


  1.  The undersigned hereby elects to purchase                  shares of the
                                               ------------------
Common Stock of Consilium, Inc. pursuant to the terms of the attached Warrant,
and tenders herewith payment of the purchase price of such shares in full.

  1.  The undersigned hereby elects to convert the attached Warrant into
Shares/cash [strike one] in the manner specified in the Warrant.  This
conversion is exercised with respect to                    of the Shares covered
                                       --------------------
by the Warrant.

  [Strike paragraph that does not apply.]

  2.  Please issue a certificate or certificates representing said shares in the
name of the undersigned or in such other name as is specified below:

                Mr. Robert Franko
                Chief Financial Officer
                Controllers Department
                Imperial Bancorp
                P.O. Box 92991
                Los Angeles, CA 90009

  3.  The undersigned represents it is acquiring the shares solely for its own
account and not as a nominee for any other party and not with a view toward the
resale or distribution thereof except in compliance with applicable securities
laws.

IMPERIAL BANCORP


--------------------------------------------- 
(Signature)


---------------------- 
(Date)

                                       7
<PAGE>
 
                                  APPENDIX 2

                    NOTICE THAT WARRANT IS ABOUT TO EXPIRE
                    --------------------------------------


                                             ,
                           ------------------ -----


Mr. Robert Franko
Chief Financial Officer
Controllers Department
Imperial Bancorp
P.O. Box 92991
Los Angeles, CA 90009


Dear Bob:

  This is to advise you that the Warrant issued to you described below will
     expire on April 1, 2002.

 
Issuer:
 
Issue Date:                             April 1, 1997
 
Class of Security Issuable:             Common
 
Exercise Price Per Share:               $3.98
 
Number of Shares Issuable:              70,000

Procedure for Exercise:


     Please contact [name of contact person at (phone number)] with any
     questions you may have concerning exercise of the Warrant. This is your
     only notice of pending expiration.

     Consilium, Inc.


     By:
        -------------------------------

     Its:
         ------------------------------

                                       8
<PAGE>
 
                                   EXHIBIT A
                                   ---------

                                 IMPERIAL BANK
                            ANTIDILUTION AGREEMENT
                            ----------------------
                                        


     This Antidilution Agreement is entered into as of April 1, 1997, by and
between Imperial Bank ("Purchaser") and Consilium, Inc. ("the Company").

                                   RECITALS
                                   --------
                                        
     A. Concurrently with the execution of this Antidilution Agreement, the
Purchaser is purchasing from the Company a Warrant to Purchase Stock (the
"Warrant") pursuant to which Purchaser has the right to acquire from the Company
the Shares (as defined in the Warrant).

     B. By this Antidilution Agreement, the Purchaser and the Company desire to
set forth the adjustment in the number of Shares issuable upon exercise of the
Warrant as a result of a Diluting Issuance

     C. Capitalized terms used herein shall have the same meaning as set forth
in the Warrant.

        NOW, THEREFORE, in consideration of the mutual promises, covenants and
conditions hereinafter set forth, the parties hereto mutually agree as follows:

        1.      Definitions. As used in this Antidilution
Agreement, the following terms have the following respective meanings:

     (a) "Option" means any right, option or warrant to subscribe for, purchase
or otherwise acquire common stock or Convertible Securities.

     (b) "Convertible Securities" means any evidences of indebtedness, shares of
stock or other securities directly or indirectly convertible into or
exchangeable for common stock.

     (c) "Issue" means to grant, issue, sell, assume or fix a record date for
determining persons entitled to receive any security (including Options),
whichever of the foregoing is the first to occur.

     (d) "Diluting Issuance"  shall have the meaning set forth in Section 3.1

     (e) "Additional Common Shares" means all common stock (including reissued
shares) Issued (or deemed to be issued pursuant to Section 2) after the date of
the Warrant. Additional Common Shares does not include, however, any common
stock or options Issued in a transaction described in Sections 2.1 and 2.2 of
the Warrant; any common stock Issued upon conversion of preferred stock
outstanding on the date of the Warrant; the Shares; or common stock and/or
options

                                       9
<PAGE>
 
Issued as incentive or in a nonfinancing transaction to employees, officers,
directors or consultants to the Company; or Employee Stock Purchase Plans.

     (f) The shares of common stock ultimately Issuable upon exercise of an
Option (including the shares of common stock ultimately Issuable upon conversion
or exercise of a Convertible Security Issuable pursuant to an Option) are deemed
to be Issued when the Option is Issued. The shares of common stock ultimately
Issuable upon conversion or exercise of a Convertible Security (other than a
Convertible Security Issued pursuant to an Option) shall be deemed Issued upon
Issuance of the Convertible Security.

     2.    Deemed Issuance of Additional Common Shares. The shares of common
           -------------------------------------------
stock ultimately Issuable upon exercise of an Option (including the shares of
common stock ultimately Issuable upon conversion or exercise of a Convertible
Security Issuable pursuant to an Option) are deemed to be Issued when the Option
is Issued. The shares of common stock ultimately Issuable upon conversion or
exercise of a Convertible Security (other than a Convertible Security Issued
pursuant to an Option) shall be deemed Issued upon Issuance of the Convertible
Security. The maximum amount of common stock Issuable is determined without
regard to any future adjustments permitted under the instrument creating the
Options or Convertible Securities.

     3.   Adjustment of Warrant Price for Diluting Issuances.
          -------------------------------------------------- 

        3.1     Weighted Average Adjustment. If the Company issues Additional
                ---------------------------
Common Shares after the date of the Warrant and the consideration per Additional
Common Share (determined pursuant to Section 9) is less than the Warrant Price
in effect immediately before such Issue ("Diluting Issuance"), the Warrant Price
in effect immediately before such Issue shall be reduced, concurrently with such
Issue, to a price (calculated to the nearest hundredth of a cent) determined by
multiplying the Warrant Price by a fraction:

        (a) the numerator of which is the amount of common stock outstanding
immediately before such Issue plus the amount of common stock that the aggregate
consideration received by Company for the Additional Common Shares would
purchase at the Warrant Price in effect immediately before such Issue, and

        (b) the denominator of which is the amount of common stock outstanding
immediately before such Issue plus the number of such Additional Shares.

        3.2     Adjustment of Number of Shares. Upon each adjustment of the
                ------------------------------
Warrant Price, the number of Shares Issuable upon exercise of the Warrant shall
be increased to equal the quotient obtained by dividing (a) the product
resulting from multiplying (i) the number of Shares Issuable upon exercise of
the Warrant and (ii) the Warrant Price, in each case as in effect immediately
before such adjustment, by (b) the adjusted Warrant Price.

        3.3     Securities Deemed Outstanding. For the purpose of this Section
                ----------------------------- 
3, all securities Issuable upon exercise of any outstanding Convertible
Securities or Options, Warrants, or other rights to acquire securities of the
Company shall be deemed to be outstanding.

                                       10
<PAGE>
 
     4. No Adjustment for Issuances Following Deemed Issuances. No adjustment to
        ------------------------------------------------------                  
the Warrant Price shall be made upon the exercise of Options or conversion of
Convertible Securities.

     5. Adjustment Following Changes in Terms of Options or Convertible
        ---------------------------------------------------------------
Securities. If the consideration payable to, or the amount of common stock
----------                                                                
Issuable by, the Company increases or decreases, respectively, pursuant to the
terms of any outstanding Options or Convertible Securities, the Warrant Price
shall be recomputed to reflect such increase or decrease. The recomputation
shall be made as of the time of the Issuance of the Options or Convertible
Securities. Any changes in the Warrant Price that occurred after such Issuance
because other Additional Common Shares were Issued or deemed Issued shall also
be recomputed.

     6. Recomputation Upon Expiration of Options or Convertible Securities. The
        ------------------------------------------------------------------     
Warrant Price computed upon the original Issue of any Options or Convertible
Securities, and any subsequent adjustments based thereon, shall be recomputed
when any Options or rights of conversion under Convertible Securities expire
without having been exercised. In the case of Convertible Securities or Options
for common stock, the Warrant Price shall be recomputed as if the only
Additional Common Shares Issued were the shares of common stock actually Issued
upon the exercise of such securities, if any, and as if the only consideration
received therefor was the consideration actually received upon the Issue,
exercise or conversion of the Options or Convertible Securities. In the case of
Options for Convertible Securities, the Warrant Price shall be recomputed as if
the only Convertible Securities Issued were the Convertible Securities actually
Issued upon the exercise thereof, if any, and as if the only consideration
received therefor was the consideration actually received by the Company
(determined pursuant to Section 9), if any, upon the Issue of the Options for
the Convertible Securities.

     7.   Limit on Readjustments. No readjustment of the Warrant Price pursuant
          ----------------------                                               
to Sections 5 or 6 shall increase the Warrant Price more than the amount of any
decrease made in respect of the Issue of any Options or Convertible Securities.
In no event shall the number of shares issued under this Warrant exceed 100,000,
nor shall the price be less than $3.00 per share.

     8.   30 Day Options. In the case of any Options that expire by their terms
          --------------                                                       
not more than 30 days after the date of Issue thereof, no adjustment of the
Warrant Price shall be made until the expiration or exercise of all such
Options.

     9.   Computation of Consideration. The consideration received by the
          ----------------------------
Company for the Issue of any Additional Common Shares shall be computed as
follows:

     (a) Cash shall be valued at the amount of cash received by the Corporation,
         ----                                                                   
excluding amounts paid or payable for accrued interest or accrued dividends.

     (b) Property. Property, other than cash, shall be computed at the fair
         --------                                                          
market value thereof at the time of the Issue as determined in good faith by the
Board of Directors of the Company.

     (c) Mixed Consideration. The consideration for Additional Common Shares
         -------------------                                                
Issued together with other property of the Company for consideration that covers
both shall be determined in good faith by the Board of Directors.

                                       11
<PAGE>
 
     (d) Options and Convertible Securities. The consideration per Additional
         ----------------------------------                                  
Common Share for Options and Convertible Securities shall be determined by
dividing:

        (i)  the total amount, if any, received or receivable by the Company for
the Issue of the Options or Convertible Securities, plus the minimum amount of
additional consideration (as set forth in the instruments relating thereto,
without regard to any provision contained therein for a subsequent adjustment of
such consideration) payable to the Company upon exercise of the Options or
conversion of the Convertible Securities, by

        (ii) the maximum amount of common stock (as set forth in the instruments
relating thereto, without regard to any provision contained therein for a
subsequent adjustment of such number) ultimately Issuable upon the exercise of
such Options or the conversion of such Convertible Securities.

     10.  General.
          ------- 

          10.1  Governing Law. This Antidilution Agreement shall be governed in
                -------------
all respects by the laws of the State of California as such laws are applied to
agreements between California residents entered into and to be performed
entirely within California.

          10.2  Successors and Assigns. Except as otherwise expressly provided
                ----------------------
herein, the provisions hereof shall inure to the benefit of, and be binding
upon, the successors, assigns, heirs, executors and administrators of the
parties hereto.

          10.3  Entire Agreement. Except as set forth below, this Antidilution
                ----------------
Agreement and the other documents delivered pursuant hereto constitute the full
and entire understanding and agreement between the parties with regard to the
subjects hereof and thereof.

          10.4  Notices, etc. All notices and other communications required or
                ------------
permitted hereunder shall be in writing and shall be mailed by first class mail,
postage prepaid, certified or registered mail, return receipt requested,
addressed (a) if to Purchaser at Purchaser's address as set forth below, or at
such other address as Purchaser shall have furnished to the Company in writing,
or (b) if to the Company, at the Company's address set forth below, or at such
other address as the Company shall have furnished to the Purchaser in writing.

          10.5  Severability. In case any provision of this Antidilution
                ------------
Agreement shall be invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions of this Antidilution Agreement shall
not in any way be affected or impaired thereby.

          10.6  Titles and Subtitles. The titles of the sections and subsections
                --------------------
of this Agreement are for convenience of reference only and are not to be
considered in construing this Antidilution Agreement.

          10.7  Counterparts. This Antidilution Agreement may be executed in any
number of counterparts, each of which shall be an original, but all of which
together shall constitute one instrument.

                                       12
<PAGE>
 
PURCHASER                               ISSUER

IMPERIAL BANK                           Consilium, Inc.


By:                                     By:
   --------------------------------        -----------------------------

Name:                                   Name:


Title:                                  Title:


Address:                                Address:

                                       13